{
  "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 (MDW), the fastest option to downtown is typically a taxi or rideshare, taking about 25-35 minutes. The most-used and most economical choice is the CTA Orange Line 'L' train, which has a station right at the airport and reaches the Loop in roughly 25-30 minutes. Rideshare services like Uber and Lyft pick up on the lower level outside baggage claim, and taxis are available at the terminal curbfront on a first-come basis. Rental cars are accessible via a consolidated facility, and regional buses plus Metra trains serve the wider area. For the best balance of cost and speed, the Orange Line is the go-to for most travelers.",
        "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",
            "time_published": "2026-06-28T03:12:29Z"
          },
          {
            "url": "https://flychicago.com/midway/tofrom/taxi/pages/default.aspx",
            "title": "Taxi, Limo, TNP |  Chicago Midway International Airport  (MDW)",
            "time_published": "2026-05-05T00:00:00Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Midway%20Airport%20%28disambiguation%29",
            "title": "Midway Airport (disambiguation)",
            "time_published": "2025-04-17T19:45:26Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Transportation_in_Chicago",
            "title": "Transportation in Chicago",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-05-15T02:56:07Z"
          },
          {
            "url": "https://www.faa.gov/AIR_TRAFFIC/FLIGHT_INFO/AERONAV/PROCEDURES/application/index.cfm?event=directory&directory=294316923CED4A93AEE2878AE4982479-MDW-NDBR&type=ndbr&nasrId=MDW",
            "title": "USA Banner",
            "time_published": "2025-06-26T00:00:00Z"
          }
        ],
        "methodology": "Airport details are drawn from the sources listed with this answer, primarily the airport operator's official website along with airline, lounge-operator and transit-authority pages, collected by our research process and refreshed periodically. Only information found in those sources is used; where a source does not cover a topic it is left out rather than guessed."
      },
      "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 all fly nonstop from Denver to Chicago. Southwest operates the most flights, with up to 277 weekly departures split between Midway (206) and O'Hare (71); United runs 162 weekly flights to O'Hare, American adds 111 to O'Hare, and Frontier offers 22 to O'Hare plus 10 to Midway. Median fares are not available in the schedule data, so no per-carrier pricing can be stated.",
        "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": "The most popular and fastest way to reach Denver International Airport from downtown is the RTD A Line commuter train, which departs from Denver Union Station and reaches the airport in about 37 minutes. Ride‑share services like Uber and Lyft, as well as taxis, offer door‑to‑door convenience for a higher cost, while regional buses provide a budget‑friendly alternative with longer travel times. Driving and parking at the airport is another option, with various on‑site lots available at different price points.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.flydenver.com/parking-and-transportation/to-and-from/airport-transit-center/",
            "title": "Airport Transit Center | Denver International Airport",
            "time_published": "2026-02-24T17:09:34Z"
          },
          {
            "url": "https://flydenver.com/connections/",
            "title": "Connections | Denver International Airport",
            "favicon": "https://flydenver.com/apple-touch-icon.png",
            "time_published": "2023-09-14T15:33:21Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Automated_Guideway_Transit_System_(Denver_International_Airport)",
            "title": "Automated Guideway Transit System (Denver International Airport)",
            "time_published": "2026-06-01T08:54:40Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Denver%20International%20Airport",
            "title": "Denver International Airport",
            "time_published": "2026-04-30T15:08:23Z"
          },
          {
            "url": "https://www.faa.gov/?action=searchForAirport&airportcode=PSR",
            "title": "Federal Aviation Administration",
            "favicon": "https://www.faa.gov/themes/custom/faa/favicon.png",
            "time_published": "2026-07-17T12:00:00Z"
          }
        ],
        "methodology": "Airport details are drawn from the sources listed with this answer, primarily the airport operator's official website along with airline, lounge-operator and transit-authority pages, collected by our research process and refreshed periodically. Only information found in those sources is used; where a source does not cover a topic it is left out rather than guessed."
      },
      "q14": {
        "question": "Are there hotels or sleeping facilities at Chicago airport?",
        "answer": "Chicago Midway Airport (MDW) has no on-site hotels, capsule hotels, or sleeping pods inside the terminal. Several nearby hotels like the Residence Inn and Fairfield Inn & Suites are just minutes away and offer free shuttle service to and from the airport.",
        "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/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://www.sleepinginairports.net/sleep-guide/sleeping-in-chicago-midway-airport.htm",
            "title": "Sleeping in Chicago Midway Airport",
            "time_published": "2024-04-29T00:00:00Z"
          },
          {
            "url": "https://www.marriott.com/en-us/hotels/chimd-fairfield-inn-and-suites-chicago-midway-airport/overview/?scid=f2ae0541-1279-4f24-b197-a979c79310b0",
            "title": "Fairfield Inn & Suites Chicago Midway Airport - Hotel With Restaurant",
            "time_published": "2024-10-11T00:00:00Z"
          },
          {
            "url": "http://flychicago.com/midway/search/pages/default.aspx?site=midway",
            "title": "Search Bar | Chicago Midway International Airport (MDW)",
            "time_published": "2026-04-11T00:00:00Z"
          },
          {
            "url": "https://www.flychicago.com/midway/myflight/international/pages/default.aspx",
            "title": "International Traveler | Chicago Midway International Airport (MDW)",
            "time_published": "2026-05-29T00:00:00Z"
          }
        ],
        "methodology": "Airport details are drawn from the sources listed with this answer, primarily the airport operator's official website along with airline, lounge-operator and transit-authority pages, collected by our research process and refreshed periodically. Only information found in those sources is used; where a source does not cover a topic it is left out rather than guessed."
      },
      "q15": {
        "question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at Dupage County?",
        "answer": "The question mentions Dupage County, but Chicago Midway International Airport (MDW) — the airport that actually serves this route from Denver — offers free unlimited Wi‑Fi throughout all terminals, both pre‑ and post‑security. A chapel is available at Midway, located pre‑security on the mezzanine level of the terminal, but the airport does not have currency exchange offices. For currency exchange, travelers would need to use nearby banks or exchange services outside the airport.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "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://www.flychicago.com/midway/ServicesAmenities/services/Pages/technology.aspx",
            "title": "Technology | Chicago Midway International Airport (MDW)",
            "time_published": "2026-05-29T00:00:00Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Midway%20Airport%20%28disambiguation%29",
            "title": "Midway Airport (disambiguation)",
            "time_published": "2025-04-17T19:45:26Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Midway_Airport_(disambiguation)",
            "title": "Midway Airport (disambiguation)",
            "time_published": "2025-04-17T19:45:26Z"
          },
          {
            "url": "https://www.faa.gov/air_traffic/flight_info/aeronav/procedures/application/index.cfm?event=directory&directory=D2DAE6292E4441508F7E852FEF1870EA-MDW-NDBR&type=ndbr&nasrId=MDW",
            "title": "USA Banner",
            "time_published": "2024-09-12T00:00:00Z"
          }
        ],
        "methodology": "Airport details are drawn from the sources listed with this answer, primarily the airport operator's official website along with airline, lounge-operator and transit-authority pages, collected by our research process and refreshed periodically. Only information found in those sources is used; where a source does not cover a topic it is left out rather than guessed."
      },
      "q17": {
        "question": "What aircraft are typically used on flights from Denver to Chicago?",
        "answer": "On the Denver–Chicago route, the most common aircraft types are the Airbus A321-200 Neo (operated by United) and the Boeing 737 MAX 8 (Southwest), with Boeing 737-800s (American and Southwest) and the Airbus A319 Ceo (American) also appearing regularly. Frontier and some Southwest flights show an unspecified type, so the exact metal can vary by day and airline. Wi‑Fi and seatback entertainment are widely available on these mainline aircraft, though the specific offerings depend on the carrier and individual airframe.",
        "methodology": "Aircraft types are taken from the equipment each operating carrier schedules on this route, drawn from published airline timetables and airline equipment schedules in our flight-schedule database. They describe typical scheduled aircraft and can vary with seasonal or day-of-week assignments and last-minute equipment swaps.",
        "toolsUsed": [
          "route_aircraft"
        ]
      },
      "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": "At Denver International Airport (DEN), the two main airline-branded lounges are the Delta Sky Club in the Main Terminal, Concourse A (accessible with a same-day Delta business- or first-class ticket, Delta Sky Club membership, or certain Amex cards; it offers premium food, beer and wine, Wi‑Fi, and flight monitors) and the American Express Centurion Lounge in Concourse C (accessible to Amex Platinum and Centurion cardholders, with complimentary food and cocktails, a bar, and quieter workspaces). A United Club is not available at DEN, though United Polaris passengers may use temporary contract lounges when service resumes. Independent lounge access through Priority Pass is limited—travelers can use credits at participating airport restaurants instead.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://americanexpress.com/en-gb/travel/lounges/the-platinum-card/DEN",
            "title": "American Express Lounges at Denver International Airport | Amex GB",
            "time_published": "2026-05-03T00:00:00Z"
          },
          {
            "url": "https://www.flydenver.com/",
            "title": "Denver International Airport | DEN",
            "favicon": "https://www.flydenver.com/apple-touch-icon.png",
            "time_published": "2026-06-02T21:34:27Z"
          },
          {
            "url": "https://flydenver.com/at-the-airport",
            "title": "Exciting Things to Do at Denver International Airport",
            "time_published": "2026-02-18T15:39:31Z"
          },
          {
            "url": "https://www.americanexpress.com/en-us/travel/lounges/the-centurion-card-idc-en/DEN/Delta-Sky-Club-Main-Terminal-Concourse-A-IgRTEiZDls/",
            "title": "Delta Sky Club at Denver International Airport | Amex US",
            "time_published": "2026-03-18T00:00:00Z"
          },
          {
            "url": "https://carsandstays.delta.com/Denver-Hotels-Sleep-Inn-Suites-Denver-International-Airport.h23533743.Hotel-Information?categorySearch=any_option&chkin=2026-07-06&chkout=2026-07-07&destType=MARKET&destination=Denver%2C+CO%2C+United+States+of+America+%28DEN-All+Airports%29&latLong=39.74483000000001%2C-104.94829500000002&pwa_ts=1782175590171&referrerUrl=aHR0cHM6Ly9jYXJzYW5kc3RheXMuZGVsdGEuY29tL0hvdGVsLVNlYXJjaA%3D%3D&regionId=6139084&rfrr=HSR&rm1=a2&searchId=b9103c12-38ab-46f5-86a7-f3447411bdbe&selectedRatePlan=383244565&selectedRoomType=218717901&sort=RECOMMENDED&top_cur=USD&top_dp=126&useRewards=false&x_pwa=1",
            "title": "Sleep Inn & Suites Denver International Airport",
            "favicon": "https://carsandstays.delta.com/favicon.ico",
            "time_published": "2026-06-23T09:32:24Z"
          }
        ],
        "methodology": "Airport details are drawn from the sources listed with this answer, primarily the airport operator's official website along with airline, lounge-operator and transit-authority pages, collected by our research process and refreshed periodically. Only information found in those sources is used; where a source does not cover a topic it is left out rather than guessed."
      },
      "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."
      }
    }
  }
}