{
  "response": {
    "Key": "DEN-CHI",
    "orig": {
      "code": "DEN",
      "type": "airport",
      "city": "Denver",
      "fullCity": "Denver, Colorado",
      "airport": "Denver Intl Airport"
    },
    "dest": {
      "code": "CHI",
      "type": "airport",
      "city": "Chicago",
      "fullCity": "Chicago, Illinois",
      "airport": "Dupage County"
    },
    "faq": {
      "q0": {
        "question": "What is the typical flight duration from Denver to Chicago?",
        "answer": "The flight from Denver to Chicago is about 890 miles and typically takes 2 hours and 25 minutes nonstop. The return leg averages 2 hours and 41 minutes, so flying back to Denver is about 16 minutes longer.",
        "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"
        ]
      },
      "q3": {
        "question": "What are the ground transportation options in Chicago?",
        "answer": "From Chicago Midway, the CTA Orange Line is the most-used and fastest option, reaching downtown in about 25 minutes for roughly $2.50. Taxis cost about $35–40 to the Loop, while rideshares like Uber or Lyft pick up at designated zones on the lower level. Rental cars are available from a consolidated facility, and shared shuttle vans run downtown for around $18 per person. Regional buses and Metra also serve the airport for suburban connections.",
        "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"
          }
        ]
      },
      "q4": {
        "question": "When is the cheapest time to fly from Denver to Chicago?",
        "answer": "Average fares from Denver to Chicago bottom out around $220 in early November, making that the cheapest stretch to fly. Overall, January ($224), September ($231), and February ($234) are the cheapest months, while late June is the most expensive period at an average of $289, with June ($284) and July ($282) the priciest months overall.",
        "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 Denver to Chicago?",
        "answer": "For Denver to Chicago, book roughly 4-7 weeks before departure for the best fares, with the absolute lowest prices about 35 days out at $171. Booking too early (5+ months ahead) or too late (within 2 weeks) costs notably more, and summer and holiday periods shift the ideal window earlier, so book 6-8 weeks ahead for those peak 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 Denver to Chicago?",
        "answer": "Yes, overnight red-eye flights are available from Denver to Chicago. Southwest operates nonstop red-eyes from Denver to Chicago Midway daily with departures around 9:00–9:55 PM, and United runs a nonstop red-eye to Chicago O'Hare on Fridays and Sundays departing around 9:05 PM. These flights are short enough that they land the same night, typically arriving before midnight.",
        "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 Denver to Chicago?",
        "answer": "Southwest, United, American, and Frontier operate nonstop flights from Denver to Chicago. Southwest flies to both Midway and O'Hare with up to 277 weekly flights, United serves O'Hare with 162 weekly flights, American serves O'Hare with 111 weekly flights, and Frontier serves both airports with 32 weekly flights. All carriers operate daily service, though Frontier's Midway flights run on select days.",
        "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 Denver and Chicago?",
        "answer": "Direct flights are abundant and typically fastest; connections are rarely competitive for this short domestic route."
      },
      "q9": {
        "question": "How reliable are on‑time departures on this route from Denver to Chicago?",
        "answer": "On the Denver to Chicago route, American Airlines is the most reliable with an on-time arrival rate of 74.2%, followed by Southwest at 72.9% and United at 71.9%. Frontier has the lowest on-time performance at 66.4% on the Midway service and 64.1% on O'Hare, though cancellation rates are low across all carriers, ranging from 0.4% to 1.1%.",
        "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 Chicago?",
        "answer": "May, June, and September offer pleasant temperatures and fewer tourists than mid‑summer."
      },
      "q11": {
        "question": "What documents should I bring with me to the airport when flying from Denver to Chicago?",
        "answer": "For this domestic flight, you'll need a REAL ID-compliant driver's license or another acceptable ID like a passport. No visa or vaccination certificates are required. Bring a credit or debit card for baggage fees, and proof of onward travel is not needed."
      },
      "q12": {
        "question": "Which airport should I use in Chicago?",
        "answer": "O'Hare is a major hub for United and American, serving international and domestic routes, and is about 17 miles from downtown. Midway is closer to the city centre, mainly served by Southwest for domestic flights."
      },
      "q13": {
        "question": "How do I get to Denver Intl Airport from the city center?",
        "answer": "From downtown Denver, the fastest and most popular way to reach Denver International Airport is the RTD A Line train, which runs every 15 minutes, 24/7, and takes about 37 minutes to Denver Union Station. Ride-share services like Uber and Lyft, as well as taxis, take roughly 25–35 minutes depending on traffic and are more convenient but cost significantly more than the train. Shared shuttles and hotel shuttles offer door-to-door service for groups or those staying near the airport, while driving yourself means parking at the airport, which can be expensive for longer trips. The A Line is the budget-friendly choice, while ride-share or taxi is the quickest door-to-door option if you value convenience over cost.",
        "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"
          }
        ]
      },
      "q14": {
        "question": "Are there hotels or sleeping facilities at Chicago airport?",
        "answer": "Chicago Midway International Airport (MDW) has no hotel connected directly to the terminal. Sleeping options inside the airport are limited, with no dedicated rest zones or quiet areas, though some travelers report couches in Concourse A and metal benches behind the TSA checkpoint. A number of nearby hotels—such as the Chicago Marriott Midway, Holiday Inn Express & Suites, Hampton Inn Chicago Midway, Hilton Garden Inn, Hyatt Place Chicago/Midway Airport, Courtyard by Marriott, Fairfield Inn & Suites, and Doubletree by Hilton—are all about one mile away and offer free airport shuttles.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://sleepinginairports.net/guides/chicago-midway-airport-guide.htm",
            "title": "Chicago Midway Airport Guide (MDW) - 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": "2018-08-03T09:56:55Z"
          },
          {
            "url": "https://www.marriott.com/en-us/hotels/chimd-fairfield-inn-and-suites-chicago-midway-airport/overview/",
            "title": "Fairfield Inn & Suites Chicago Midway Airport | Comfortable Hotel with Free Breakfast",
            "favicon": "https://cache.marriott.com/Images/Mobile/MC_Logos/MarriottApple57x57.png"
          },
          {
            "url": "https://ihg.com/holidayinnexpress/hotels/us/en/chicago/chimw/hoteldetail/amenities",
            "title": "Holiday Inn Express & Suites Chicago-Midway Airport Amenities & Services",
            "favicon": "https://digital.ihg.com/is/image/ihg/app-web-chiclet-holidayinnexpress?fmt=png-alpha"
          },
          {
            "url": "https://www.marriott.com/en-us/hotels/chirm-residence-inn-chicago-midway-airport/overview/airport/",
            "title": "Residence Inn by Marriott Chicago Midway Airport",
            "time_published": "2025-02-19T00:00:00Z"
          },
          {
            "url": "https://sleepinginairports.net/lounges/chicago-midway-airport-lounges.htm",
            "title": "Chicago Midway   Airport Lounges (MDW) – Sleeping in Airports",
            "favicon": "https://www.sleepinginairports.net/wp-content/uploads/2018/09/cropped-sia-logo-180x180.png"
          },
          {
            "url": "https://hilton.com/en/locations/usa/illinois/chicago/mdw-chicago-midway-international-airport",
            "title": "Hotels near Chicago Midway International Airport, Chicago, IL - Find Hotels - Hilton",
            "favicon": "https://www.hilton.com/modules/assets/img/brand/WW/favicon_WW.svg"
          }
        ]
      },
      "q15": {
        "question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at Dupage Airport?",
        "answer": "Chicago Midway International Airport offers unlimited free Wi-Fi throughout all terminals, both pre- and post-security, under the network names 'Boingo Hotspot' or 'Free MDW Wi-Fi'. The airport has a chapel, and banking services are available, which typically include currency exchange. Prayer rooms are not separately listed beyond the chapel.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://flychicago.com/midway/ServicesAmenities/pages/default.aspx",
            "title": "Services and Amenities | Chicago Midway International Airport (MDW)",
            "favicon": "https://flychicago.com/_catalogs/masterpage/favicon.ico"
          },
          {
            "url": "https://flychicago.com/midway/ServicesAmenities/services/Pages/technology.aspx",
            "title": "Technology | Chicago Midway International Airport (MDW)",
            "favicon": "https://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://flychicago.com/midway/map/pages/default.aspx",
            "title": "Chicago Midway International Airport (MDW) | Official Website",
            "time_published": "2026-04-08T00:00:00Z"
          },
          {
            "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"
          }
        ]
      },
      "q16": {
        "question": "Are there accessible services or children's facilities at the Denver and Chicago airports?",
        "answer": "Denver International Airport (DEN) offers accessible parking, electric carts to transport elderly or disabled passengers to airline gates, a Hidden Disabilities Sunflower Lanyard Program, and interpreter services at information booths; passengers can request assistance from Airport Butler or Metro Taxi (48-hour advance notice recommended at 303-333-3333). However, the airport data returned for Chicago (CHI) resolved to DuPage Airport (DPA), a general aviation facility with a passenger terminal, lounges, and snooze rooms but no listed mobility assistance or children's play areas. For Chicago O'Hare or Midway, which are the airports serving this route, no accessibility or children's facility information is available in the returned data.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "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"
          },
          {
            "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"
          }
        ]
      },
      "q17": {
        "question": "What aircraft are typically used on flights from Denver to Chicago?",
        "answer": "United flies the most variety of aircraft on Denver to Chicago, using Boeing 757-300s, Airbus A321neos, Boeing 777-200s, Boeing 757s, Airbus A320s, Boeing 737s, and Boeing 737-900s. Southwest uses Boeing 737s, including 737-700s, Frontier flies Airbus A320neos and A320s, and American uses Airbus A319s, Boeing 737s and 737-800s, plus Airbus A320s.",
        "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 Denver to Chicago?",
        "answer": "Nonstop flights from Denver to Chicago are operated by Southwest, United, American, and Frontier. United and American are members of Star Alliance and oneworld, respectively, while Southwest and Frontier are unaffiliated with any major alliance.",
        "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 Denver?",
        "answer": "Denver International Airport has several lounge options for departing passengers, including American Airlines Admirals Club, American Express Centurion Lounge, Capital One Lounge (Plaza Premium), Delta Sky Club, United Club (with locations at A Gates West, B Gates East, B Gates West, and United Club Fly), and USO Denver. The Centurion Lounge is located on the C Gates Mezzanine near gate C-46, while Delta Sky Club is past security at the north end of Concourse A on the bridge from Jeppesen Terminal. United Club B Gates West is temporarily closed. There is also a free Rest and Recharge area on the Concourse A mezzanine with comfortable seating and recliners.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://flydenver.com/at-the-airport/lounge-areas",
            "title": "Denver Airport Lounges | Denver International Airport",
            "favicon": "https://flydenver.com/apple-touch-icon.png",
            "time_published": "2026-08-03T22:37:03Z"
          },
          {
            "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://americanexpress.com/en-us/travel/lounges/the-platinum-card/DEN",
            "title": "American Express Lounges at Denver 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/denver-international",
            "title": "Denver International Airport DEN Lounges - DEN Airport Guide and lounges. | Priority Pass",
            "favicon": "https://my.prioritypass.com/icon.png?a4ff481221414a5c"
          }
        ]
      },
      "q21": {
        "question": "What is the baggage allowance on this route from Denver to Chicago?",
        "answer": "On domestic flights like Denver to Chicago, basic economy often excludes a free carry-on and charges for checked bags. Standard economy typically allows a carry-on but charges for checked luggage, while premium fares may include both."
      },
      "q22": {
        "question": "What cabin and seat options are typical from Denver to Chicago?",
        "answer": "Flights from Denver to Chicago typically offer Economy and standard domestic First Class with recliner seats; flat-bed Business and Premium Economy are not common on this short domestic route."
      },
      "q23": {
        "question": "Are same‑day changes or standby possible on this route?",
        "answer": "Policies differ by airline and fare; flexible and higher cabins typically allow same‑day changes or standby, while Basic Economy generally does not."
      }
    }
  }
}