{
  "response": {
    "Key": "CHI-DEN",
    "orig": {
      "code": "CHI",
      "type": "airport",
      "city": "Chicago",
      "fullCity": "Chicago, Illinois",
      "airport": "Dupage County"
    },
    "dest": {
      "code": "DEN",
      "type": "airport",
      "city": "Denver",
      "fullCity": "Denver, Colorado",
      "airport": "Denver Intl Airport"
    },
    "faq": {
      "q0": {
        "question": "What is the typical flight duration from Chicago to Denver?",
        "answer": "The nonstop flight from Chicago to Denver is about 893 miles and typically takes 2 hours 41 minutes. The return trip is about 2 hours 25 minutes, so the outbound leg is slightly longer due to prevailing winds.",
        "methodology": "Flight times and distances come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). The typical flight time is the median scheduled block time across all carriers on the route, computed the same way in both directions so the difference reflects prevailing winds rather than any change in method. Distance is the great-circle distance between the two airports, so the actual flown track is typically 2-5% longer.",
        "toolsUsed": [
          "flight_schedule"
        ]
      },
      "q1": {
        "question": "Are there any direct flights from Chicago to Denver?",
        "answer": "Yes, there are plentiful daily nonstop flights from Chicago to Denver. Five airlines — United, Southwest, American, and Frontier — operate roughly 600 combined weekly nonstops from O'Hare and Midway, with departures spread throughout the day from early morning until late evening. Every carrier runs daily service, so you can fly any day of the week.",
        "methodology": "Airlines and weekly frequencies are compiled from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a median fare is shown for a carrier, it reflects the real fares Priceline users found on this route in the last 72 hours. Carrier service, flight times and distances for this route come from our flight-schedule database, which draws on published airline timetables, U.S. government schedule data, and observed operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We report the days of the week and the departure times each carrier operates. The typical flight time is the median scheduled block time, given both per carrier and across all carriers on the route; where a schedule does not publish an elapsed time, it is derived from the scheduled departure and arrival times converted to UTC. Outbound and return times are computed by the same method, so the difference between them is directly comparable and reflects prevailing winds rather than any change in derivation. Distance is the great-circle distance between the two specific airports named, so an actual flown track is typically 2-5% longer. Where shown, on-time departure and arrival rates and cancellation rates come from the U.S. Bureau of Transportation Statistics (BTS) Airline On-Time Performance dataset, which covers U.S. domestic routes only; where a typical fare is shown, it comes from the U.S. DOT Airline Origin and Destination Survey (DB1B), a quarterly 10% sample of tickets sold.",
        "toolsUsed": [
          "route_airlines",
          "flight_schedule"
        ]
      },
      "q3": {
        "question": "What are the ground transportation options in Denver?",
        "answer": "Denver International Airport offers several ground transportation options: the RTD A Line train to downtown Union Station (37 minutes, about $10.50, best for budget travelers), ride-share services like Uber/Lyft (25–35 minutes, most convenient), taxis (25–35 minutes, 24/7 availability), shared vans (45–60 minutes, good for groups), and rental cars from over 10 major companies with free shuttle access. The A Line train is the most-used and fastest budget option, while ride-share is the most-used for convenience and solo travelers. Car rentals are best for multi-day trips or exploring Colorado, and mountain shuttles serve ski resorts.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.flydenver.com/parking-and-transportation/to-and-from/",
            "title": "Getting To and From | Denver International Airport",
            "favicon": "https://www.flydenver.com/apple-touch-icon.png",
            "time_published": "2026-05-15T18:36:33Z"
          },
          {
            "url": "https://flydenver.com/parking-and-transportation/to-and-from/public-bus-or-train-rtd",
            "title": "Public Bus or Train | Denver International Airport",
            "favicon": "https://flydenver.com/apple-touch-icon.png",
            "time_published": "2026-05-15T18:47:06Z"
          },
          {
            "url": "https://www.flydenver.com/parking-and-transportation/to-and-from/airport-transit-center/",
            "title": "Airport Transit Center | Denver International Airport",
            "favicon": "https://www.flydenver.com/apple-touch-icon.png",
            "time_published": "2026-05-15T18:45:07Z"
          },
          {
            "url": "https://faa.gov/air_traffic/publications/domesticnotices/dom25010_af.html",
            "title": "DENVER INTERNATIONAL AIRPORT (KDEN) standard taxi routes",
            "favicon": "https://faa.gov/air_traffic/publications/domesticnotices/assets/images/favicon.ico"
          },
          {
            "url": "https://www.fly.faa.gov/fly/flyfaa/flyfaaindex?ARPT=DEN&p=1",
            "title": "Denver International Airport"
          }
        ]
      },
      "q4": {
        "question": "When is the cheapest time to fly from Chicago to Denver?",
        "answer": "Average fares from Chicago to Denver bottom out around $204 in late October, making that the cheapest stretch to fly. Overall, October, September, and January are the cheapest months, averaging $216, $222, and $223 respectively. The most expensive period is late December, when average fares climb to about $286.",
        "methodology": "Seasonal fares come from Priceline's own air booking-summary archive, analysed in-house and refreshed monthly. For each day of the year we take a representative round-trip fare, a blend of the 25th-percentile and average ticket price over the route's bookings, and smooth the series into a seasonal curve; the half-month low and high and the monthly figures quoted here are averages of that curve. Thin and international routes borrow their seasonal shape from the nearest busy routes, with the price level anchored to the route's own bookings.",
        "toolsUsed": [
          "seasonal_prices"
        ]
      },
      "q5": {
        "question": "How far in advance should I book tickets from Chicago to Denver?",
        "answer": "For flights from Chicago to Denver, the best fares are typically found by booking 4-6 weeks before departure, with an average price of $167 in that window. The absolute cheapest single day to book is 30 days out at $165, while last-minute bookings (0 days before) can cost $278. Summer and holiday periods tend to shift this window earlier, as demand pushes prices up and availability down, so booking 6-8 weeks ahead is safer for those times.",
        "methodology": "Booking-window guidance comes from the same monthly in-house analysis of Priceline's own air booking-summary archive. We aggregate the route's bookings by how many days before departure they were made, from about 180 days out to the day of travel, smooth the curve, and highlight the stretch of lead times with the lowest average fare. Thin and international routes borrow the curve shape from the nearest busy routes, anchored to the route's own price level. It reflects current fares and is refreshed monthly.",
        "toolsUsed": [
          "booking_timing"
        ]
      },
      "q6": {
        "question": "Are overnight (red‑eye) flights available from Chicago to Denver?",
        "answer": "Yes, overnight red-eye flights are available from Chicago to Denver. From O'Hare, United operates multiple daily red-eyes departing between 9:15 PM and 9:44 PM, and American has a daily 9:45 PM departure; from Midway, Southwest runs red-eyes departing between 9:20 PM and 10:55 PM. These are short flights, so they land the same night — typically around midnight local time in Denver.",
        "methodology": "Red-eye flights are identified from scheduled local departure and arrival times in our flight-schedule database — built from published airline timetables and official schedule data, including U.S. Department of Transportation records for domestic routes — flagging services that depart late at night and arrive the following morning; for connecting itineraries the red-eye is based on the timing of the overnight long-haul leg.",
        "toolsUsed": [
          "redeye_flights"
        ]
      },
      "q7": {
        "question": "Which airlines usually operate this route from Chicago to Denver?",
        "answer": "Southwest, United, American, and Frontier all operate nonstop flights from Chicago to Denver. Southwest is the most frequent, with 219 weekly flights from Midway and another 54 from O'Hare, while United flies 187 weekly from O'Hare and American adds 121. Frontier operates 26 weekly flights from O'Hare and 20 from Midway. Typical median fares range from around $121 on Frontier to $187 on United, with Southwest around $219 and American around $121.",
        "methodology": "Airlines and weekly frequencies come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a typical fare is shown for a carrier, it is the median of the real fares Priceline users found on this route in the last 72 hours.",
        "toolsUsed": [
          "route_airlines"
        ]
      },
      "q8": {
        "question": "If I need a connection, what are common layover cities between Chicago and Denver?",
        "answer": "This is a heavily served domestic route with multiple daily non‑stops. If you need a connection, common hubs that keep total travel time competitive include Minneapolis, Dallas/Fort Worth, and Phoenix. These offer efficient transfers and broad domestic networks."
      },
      "q9": {
        "question": "How reliable are on‑time departures on this route from Chicago to Denver?",
        "answer": "On flights from Chicago to Denver, Frontier (F9) from O'Hare is the most punctual, with 79.9% of flights arriving on time and a 0.8% cancellation rate. United (UA) follows at 78.1% on-time and 0.6% cancellations, while American (AA) trails at 70.1% on-time and a higher 1.1% cancellation rate.",
        "methodology": "On-time arrival and cancellation rates come from the U.S. Bureau of Transportation Statistics (BTS) Airline On-Time Performance dataset, which covers U.S. domestic routes only; a flight counts as on time when it arrives within 15 minutes of schedule. Carriers are ranked by arrival on-time rate on this route, and the carrier list itself comes from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI).",
        "toolsUsed": [
          "flight_schedule"
        ]
      },
      "q10": {
        "question": "Which months have the best weather for traveling to Denver?",
        "answer": "May to June and September to October offer mild temperatures, sunny skies, and fewer visitors than the peak summer months."
      },
      "q11": {
        "question": "What documents should I bring with me to the airport when flying from Chicago to Denver?",
        "answer": "Bring a Real ID or passport for domestic travel, a payment method for baggage and any vaccination or health certificates required by your airline or destination."
      },
      "q12": {
        "question": "Which airport should I use in Denver?",
        "answer": "Denver has only one major commercial airport, Denver International Airport, so it's your only option."
      },
      "q13": {
        "question": "How do I get to Dupage County from the city center?",
        "answer": "From downtown Chicago to Midway International Airport (MDW), the fastest and most popular option is the CTA Orange Line 'L' train, which runs from the Loop to the airport in about 25 minutes and is economical. Taxis, limos, and ride‑share services are readily available, with a taxi costing roughly $35–40 from downtown, while shared ride vans are about $18 per person. Airport shuttles and regional buses serve the suburbs and surrounding states, and driving is possible with on‑site garage, daily, and economy parking options. The Orange Line is generally the most reliable and cost‑effective choice for reaching Midway from the city center.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.flychicago.com/midway/tofrom/pages/default.aspx",
            "title": "Getting To and From | Chicago Midway International Airport (MDW)",
            "favicon": "https://www.flychicago.com/_catalogs/masterpage/favicon.ico"
          },
          {
            "url": "https://flychicago.com/midway/tofrom/taxi/pages/default.aspx",
            "title": "Taxi, Limo, TNP |  Chicago Midway International Airport  (MDW)",
            "favicon": "https://flychicago.com/_catalogs/masterpage/favicon.ico"
          },
          {
            "url": "https://www.flychicago.com/midway/tofrom/shuttles/pages/default.aspx",
            "title": "Shuttles / Buses | Chicago Midway International Airport (MDW)",
            "favicon": "https://www.flychicago.com/_catalogs/masterpage/favicon.ico"
          },
          {
            "url": "https://www.flychicago.com/midway/home/pages/default.aspx",
            "title": "Chicago Midway International Airport (MDW) | Official Website",
            "favicon": "https://www.flychicago.com/_catalogs/masterpage/favicon.ico"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Midway_International_Airport",
            "title": "Midway International Airport",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-09-02T21:21:22Z"
          }
        ]
      },
      "q14": {
        "question": "Are there hotels or sleeping facilities at Denver airport?",
        "answer": "Yes, Denver International Airport has an on-site hotel: The Westin Denver International Airport, which is directly connected to the Jeppesen Terminal and is the only hotel attached to the terminal. It is located at the south end of Level 5, about a five-minute walk from security, and offers a 519-room hotel with a fitness studio and heated indoor pool. If you prefer not to stay at the Westin, several nearby hotels offer free airport shuttles.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://sleepinginairports.net/guides/denver-airport-guide.htm",
            "title": "Denver Airport Guide (DEN) - Sleeping in Airports",
            "favicon": "https://www.sleepinginairports.net/nitropack_static/oBWrHkPujHTPIaVWqdDSDhClXUyrYhhb/assets/images/optimized/rev-b853180/www.sleepinginairports.net/wp-content/uploads/2018/09/cropped-sia-logo-180x180.png",
            "time_published": "2018-08-03T10:21:44Z"
          },
          {
            "url": "https://www.marriott.com/en-us/hotels/denaw-the-westin-denver-international-airport/overview/",
            "title": "Rocky Mountain Hotel | The Westin Denver International Airport",
            "time_published": "2024-10-11T00:00:00Z"
          },
          {
            "url": "https://flydenver.com/at-the-airport/services-and-amenities/the-westin-hotel-at-den",
            "title": "The Westin Hotel at DEN | Denver International Airport",
            "favicon": "https://flydenver.com/apple-touch-icon.png",
            "time_published": "2026-08-10T19:27:13Z"
          },
          {
            "url": "https://www.marriott.com/en-us/hotels/dengr-gaylord-rockies-resort-and-convention-center/destination/",
            "title": "Hotel Denver International Airport | Gaylord Rockies Resort & Convention Center",
            "favicon": "https://cache.marriott.com/Images/Mobile/MC_Logos/MarriottApple57x57.png"
          }
        ]
      },
      "q15": {
        "question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at Denver Intl Airport?",
        "answer": "Denver International Airport offers free Wi‑Fi throughout the Jeppesen Terminal and all three concourses, so you can stay connected while traveling between Chicago and Denver. The airport also has a non-denominational chapel and interfaith prayer room located on the north side of the Jeppesen Terminal, near the international arrivals area. Currency exchange is available through Travelex locations in the terminal on Level 5.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.flydenver.com/at-the-airport/services-and-amenities/",
            "title": "Passenger Services and Amenities | Denver International Airport",
            "favicon": "https://www.flydenver.com/apple-touch-icon.png",
            "time_published": "2026-04-08T21:33:08Z"
          },
          {
            "url": "https://flydenver.com/about-den/facilities",
            "title": "Airport Facilities and Grounds | Denver International Airport",
            "favicon": "https://flydenver.com/apple-touch-icon.png",
            "time_published": "2026-08-03T22:42:42Z"
          },
          {
            "url": "https://www.flydenver.com",
            "title": "Denver International Airport | DEN",
            "favicon": "https://www.flydenver.com/apple-touch-icon.png",
            "time_published": "2026-09-08T14:54:34Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Denver_International_Airport",
            "title": "Denver International Airport",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-09-11T12:43:01Z"
          },
          {
            "url": "https://flydenver.com/at-the-airport/services-and-amenities/the-westin-hotel-at-den",
            "title": "The Westin Hotel at DEN | Denver International Airport",
            "favicon": "https://flydenver.com/apple-touch-icon.png",
            "time_published": "2026-08-10T19:27:13Z"
          }
        ]
      },
      "q16": {
        "question": "Are there accessible services or children's facilities at the Chicago and Denver airports?",
        "answer": "At Denver International Airport, travelers with disabilities can use the Hidden Disabilities Sunflower Lanyard Program, accessible parking in all airport-owned facilities, electric carts to reach airline gates, and Airport Butler assistance for luggage, security navigation, and ground transportation. Denver also provides interpreter services at information booths and in Customs, and travelers can request wheelchair-accessible taxi pickup on Level 5 with 48 hours' advance notice to Metro Taxi. At Chicago's DuPage Airport, the fixed-base operator offers courtesy cars, lounges, snooze rooms, showers, and an exercise room for transient crews and passengers. For mobility assistance, arrange services through your airline at least 48 hours before departure.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://en.wikipedia.org/wiki/DuPage_Airport",
            "title": "DuPage Airport",
            "time_published": "2026-07-16T20:45:00Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/York_Township,_DuPage_County,_Illinois",
            "title": "York Township, DuPage County, Illinois",
            "time_published": "2026-03-30T14:23:39Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/DuPage_County,_Illinois",
            "title": "DuPage County, Illinois",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-09-01T17:35:34Z"
          },
          {
            "url": "https://flydenver.com/at-the-airport/services-and-amenities/accessibility-services",
            "title": "Accessibility and Mobility | Denver International Airport",
            "favicon": "https://flydenver.com/apple-touch-icon.png",
            "time_published": "2026-08-10T20:24:04Z"
          },
          {
            "url": "https://www.flydenver.com/event/61719/",
            "title": "Accessibility Resource Fair | Denver International Airport",
            "favicon": "https://www.flydenver.com/apple-touch-icon.png",
            "time_published": "2026-07-22T17:07:58Z"
          },
          {
            "url": "https://flydenver.com/about-den/facilities",
            "title": "Airport Facilities and Grounds | Denver International Airport",
            "favicon": "https://flydenver.com/apple-touch-icon.png",
            "time_published": "2026-08-03T22:42:42Z"
          },
          {
            "url": "https://airporttech.tc.faa.gov/Products/Databases/Denver-Instrumentation/Browse-Database/Weather",
            "title": "AirportTech > Products > Databases  > Denver Instrumentation > Browse Database > Weather",
            "favicon": "https://airporttech.tc.faa.gov/Portals/0/favicon-FAA.ico?ver=L21jzf-llJYYjFtxLcsyqg%3d%3d"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Denver_International_Airport",
            "title": "Denver International Airport",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-09-11T12:43:01Z"
          }
        ]
      },
      "q17": {
        "question": "What aircraft are typically used on flights from Chicago to Denver?",
        "answer": "United operates the most flights from Chicago to Denver, using Boeing 737 family aircraft, Airbus A321neo, Boeing 777-200, Boeing 757-300, Airbus A320 family, and Boeing 737-900. American Airlines flies Airbus A319, Boeing 737-800, Airbus A320 family, and Boeing 737 family aircraft. Southwest uses Boeing 737-700 and Boeing 737 MAX 8, while Frontier operates Airbus A320neo and Airbus A320 family aircraft.",
        "methodology": "Aircraft types come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). For U.S. routes the type is grounded in the tail number that actually operated the flight; elsewhere it comes from the airline's filed equipment code. Where the source does not commit to a specific variant we name the aircraft family (for example Airbus A320 family) rather than guess, and where no reliable type is on file the aircraft is omitted rather than estimated. Types describe typical scheduled equipment and can vary with seasonal or day-of-week assignments and last-minute swaps.",
        "toolsUsed": [
          "flight_schedule"
        ]
      },
      "q18": {
        "question": "Which airline alliances serve flights from Chicago to Denver?",
        "answer": "United (Star Alliance) and American (oneworld) fly nonstop from Chicago to Denver, while Southwest and Frontier also serve the route but belong to no global alliance. SkyTeam has no nonstop presence on this route but may offer connecting itineraries.",
        "methodology": "Airlines and weekly frequencies are compiled from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a median fare is shown for a carrier, it reflects the real fares Priceline users found on this route in the last 72 hours.",
        "toolsUsed": [
          "route_airlines"
        ]
      },
      "q20": {
        "question": "What are the best airport lounge options when departing from Chicago?",
        "answer": "Chicago Midway International Airport has one lounge, The Club MDW, located in Concourse B just after security opposite the food court. It offers premium food, spirits and liquor, beer and wine, Wi-Fi, flight monitors, and a quiet area, with access permitted up to 2.5 hours before departure. Children under 2 enter free with an adult, and alcoholic beverages are available only to passengers 21 or older.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.americanexpress.com/en-us/travel/lounges/the-platinum-card/MDW/The-Club-MDW-Concourse-B-S6nYE3TWPd/?inav=en_us_menu_travel_travel_services_airport_lounge_access_by_card",
            "title": "The Club MDW at Chicago Midway International Airport | Amex US",
            "time_published": "2026-05-01T00:00:00Z"
          },
          {
            "url": "https://americanexpress.com/en-us/travel/lounges/the-platinum-card/MDW",
            "title": "American Express Lounges at Chicago Midway International Airport | Amex US",
            "favicon": "https://www.americanexpress.com/apple-touch-icon-152x152.png"
          },
          {
            "url": "https://americanexpress.com/en-us/travel/lounges/the-platinum-card/MDW/the-club-mdw-concourse-b-S6nYE3TWPd",
            "title": "The Club MDW at Chicago Midway International Airport | Amex US",
            "favicon": "https://www.americanexpress.com/apple-touch-icon-152x152.png"
          },
          {
            "url": "https://my.prioritypass.com/en-GB/lounges/united-states-of-america/midway-international",
            "title": "Chicago Midway International Airport MDW Lounges - MDW Airport Guide and lounges. | Priority Pass",
            "favicon": "https://my.prioritypass.com/icon.png?a4ff481221414a5c",
            "time_published": "2026-06-30T08:24:25Z"
          },
          {
            "url": "https://prioritypass.com/en-GB/lounges/united-states-of-america/midway-international/mdw-the-club-mdw",
            "title": "The Club MDW MDW AIRPORT Central Market Chicago IL Midway International | Priority Pass",
            "favicon": "https://prioritypass.com/icon.png?icon.1k7202wk2zqql.png?dpl=1f82db4e-b1f8-481b-b911-c24ef915cc46"
          }
        ]
      },
      "q21": {
        "question": "What is the baggage allowance on this route from Chicago to Denver?",
        "answer": "On Chicago–Denver flights, basic economy fares often restrict checked bags and may limit carry‑ons to a personal item. Standard economy usually includes a carry‑on and personal item, while checked bags incur fees unless included by fare or status."
      },
      "q22": {
        "question": "What cabin and seat options are typical from Chicago to Denver?",
        "answer": "Flights from Chicago to Denver typically offer Economy and Economy Plus with extra legroom. Flat-bed Business class is uncommon, and Premium Economy is not usually offered."
      },
      "q23": {
        "question": "Are same‑day changes or standby possible on this route?",
        "answer": "Policies vary by airline and fare; flexible and premium cabins often allow same‑day changes or standby, while Basic Economy typically does not."
      }
    }
  }
}