{ "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": "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": [ "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" } ] }, "q4": { "question": "When is the cheapest time to fly from Denver to Chicago?", "answer": "The cheapest months to fly from Denver to Chicago are October, September, and August, with average fares as low as $193 in October. The most expensive months are June, November, and April, with June averaging $343.", "methodology": "This 'good deal' estimate shows a representative best price for each departure date across roughly a 12-month window (about 3 months back and 9 months forward). It is built from real flight prices found by Priceline users searching this route, accumulated into a price history for each departure date. Rather than weighting all of that history equally, we apply exponential time decay so recent prices dominate — a price seen yesterday counts almost in full, one from about a month ago roughly a third, and prices from a few months back very little — giving a figure that tracks today's market instead of a stale long-run average. Clear price outliers are removed before any calculation, departure dates with no observations are filled in from nearby dates, and the resulting curve is lightly smoothed so it reads as a clean seasonal trend rather than day-to-day noise.", "toolsUsed": [ "seasonal_prices" ] }, "q5": { "question": "How far in advance should I book tickets from Denver to Chicago?", "answer": "For flights from Denver to Chicago, the best fares are typically found when booking 3–6 weeks before departure, with an average price around $160. The absolute cheapest day to book is about 25 days out, at $156. During summer and holiday periods, demand spikes can push the optimal window a bit earlier and raise prices, so aiming for 4–8 weeks ahead is safer for those peak times.", "methodology": "This booking-window guidance is built from the same real flight prices found by Priceline users searching this route, re-grouped by how many days before departure each price was seen (from the departure day out to about 180 days ahead) across the route's price history. At each booking lead time we report the 25th-percentile price — the cheaper end of what travelers were quoted, rather than the rock-bottom minimum (which can be a fluke) or the average (which is pulled up by expensive last-minute fares). The buy-or-wait advice then applies a risk premium that grows as departure approaches, since seat availability shrinks and prices become less predictable; using that adjusted curve we flag windows where waiting is likely to save a meaningful amount (at least $20 or 5%) versus windows where booking now is the better call. Isolated single-day recommendations are filtered out, so the advice only reflects a window that holds for several days in a row.", "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 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" ] }, "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": "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": [ "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" } ] }, "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" } ] }, "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" } ] }, "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®ionId=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" } ] }, "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." } } } }