{ "response": { "Key": "IAH-ORD", "orig": { "code": "IAH", "type": "airport", "city": "Houston", "fullCity": "Houston, Texas", "airport": "George Bush Intercontinental Airport" }, "dest": { "code": "ORD", "type": "airport", "city": "Chicago", "fullCity": "Chicago, Illinois", "airport": "O'Hare Intl Airport" }, "faq": { "q0": { "question": "What is the typical flight duration from Houston to Chicago?", "answer": "The flight from Houston to Chicago is about 930 miles and typically takes 2 hours and 51 minutes nonstop, with the return leg to Houston averaging 2 hours and 54 minutes — a small difference of just three minutes.", "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 Houston to Chicago?", "answer": "Yes, there are plenty of nonstop flights from Houston (IAH) to Chicago O'Hare (ORD). United and American (including American Eagle operated by Republic, Envoy, and PSA) fly the route daily, with United offering up to 22 departures a day and American around 17; Frontier also runs nonstops four days a week (Monday, Thursday, Friday, and Sunday). The flight takes about 2 hours and 45 minutes, and United and Frontier both operate overnight red-eyes as well.", "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. 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": [ "route_airlines", "flight_schedule", "redeye_flights" ] }, "q3": { "question": "What are the ground transportation options in Chicago?", "answer": "At Chicago O'Hare, the CTA Blue Line 'L' train is the most-used option for getting to the city center, offering a direct, economical ride from the terminal to downtown in about 40–45 minutes. Taxis, limos, and rideshare services like Uber and Lyft are readily available and provide a faster, door-to-door trip, though at higher cost and with some traffic variability. Several rental car companies operate on-site, and regional shuttles and buses serve the city and suburbs. Metra commuter rail also connects the airport to downtown, but with less frequent service than the Blue Line.", "toolsUsed": [], "references": [ { "url": "https://flychicago.com/ohare/tofrom/pages/default.aspx", "title": "Getting To and From O'Hare International Airport | Chicago O’Hare International Airport (ORD)", "favicon": "https://flychicago.com/_catalogs/masterpage/favicon.ico" }, { "url": "https://www.flychicago.com/ohare/map", "title": "Map | Chicago O’Hare International Airport (ORD)", "time_published": "2026-05-27T00:00:00Z" }, { "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://en.wikipedia.org/wiki/Transportation%20in%20Chicago", "title": "Transportation in Chicago", "time_published": "2026-04-13T06:59:09Z" }, { "url": "https://faa.gov/regulations_policies/orders_notices/index.cfm/go/document.information/documentID/6111", "title": "Order 3330.39 - Chicago/o'hare Airport Traffic Control Tower (ATCT) Staffing PChicago/o'hare Airport Traffic Control Tower (ATCT) Staffing Plan (Cancelled)", "time_published": "2026-04-10T00:00:00Z" } ], "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 Houston to Chicago?", "answer": "Average fares from Houston to Chicago bottom out around $206 in early February, and the cheapest months overall are February ($207), October ($213), and September ($217). The most expensive stretch is late June, when average fares climb to about $276, with June and July both averaging $271.", "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 Houston to Chicago?", "answer": "For flights from Houston to Chicago, the optimal booking window is roughly 4 to 6 weeks before departure, when fares average around $152 and can dip as low as $150 about 30 days out. Booking much earlier — say 4 to 6 months ahead — tends to cost significantly more, often $200 to $288, and last-minute bookings within a week of travel are also pricey at $240 to $270. Summer and holiday periods shift the curve slightly earlier, so aiming for 5 to 7 weeks ahead is a safer bet during 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 Houston to Chicago?", "answer": "Yes, overnight red‑eye flights are available from Houston (IAH) to Chicago (ORD). United operates daily red‑eyes departing around 9:30–9:34 PM, and Frontier flies red‑eyes on Monday, Thursday, Friday, and Sunday departing around 9:54 PM. These flights land in Chicago the same night, typically 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 Houston to Chicago?", "answer": "United, American, and Frontier all fly nonstop from Houston (IAH) to Chicago O'Hare. United is the most frequent with 156 weekly flights and a typical fare around $708, while American operates about 93 mainline flights plus additional regional service under the American Eagle brand (operated by Republic, Envoy, and PSA) at a median fare near $435. Frontier offers limited nonstop service on select days with fares around $249. Other carriers may serve the route via connections, but these three provide direct service.", "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" ] }, "q9": { "question": "How reliable are on‑time departures on this route from Houston to Chicago?", "answer": "On the Houston (IAH) to Chicago (ORD) route, United shows the strongest reliability with 82.5% of departures on time and a 0.6% cancellation rate. American and its regional partners are less punctual — mainline American at 74.5% on time with 1.4% cancellations, Envoy at 78.7% on time with no cancellations, and Republic at 74.7% on time with 3.3% cancellations. Frontier trails at 62.2% on time and a 3.3% 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 Chicago?", "answer": "May, June, September, and early October provide pleasant temperatures and fewer tourists than summer." }, "q11": { "question": "What documents should I bring with me to the airport when flying from Houston to Chicago?", "answer": "For domestic travel within the United States, bring a REAL ID–compliant driver's license or another acceptable ID like a U.S. passport. No visa or travel authorization is required. Have a payment method ready for baggage fees, and check if any vaccination certificates are needed for your destination." }, "q12": { "question": "Which airport should I use in Chicago?", "answer": "O'Hare is the primary international gateway with extensive domestic and global connections, located about 17 miles northwest of downtown. Midway is closer to the city centre and mainly serves domestic low-cost and point-to-point flights, predominantly on Southwest Airlines. Choose O'Hare for most international itineraries and alliance hubs; choose Midway for cheaper domestic fares and quicker downtown access." }, "q14": { "question": "Are there hotels or sleeping facilities at Chicago airport?", "answer": "Chicago O'Hare Airport does not have on-site hotels, capsule hotels, or sleeping pods inside the terminals. The Hilton Chicago O'Hare is connected to the domestic terminals via an underground walkway and does not require a shuttle. Many nearby hotels, such as the SpringHill Suites and Marriott Suites O'Hare, offer complimentary shuttle service to and from the airport.", "toolsUsed": [], "references": [ { "url": "https://sleepinginairports.net/guides/chicago-ohare-airport-guide.htm", "title": "Chicago O'Hare Airport Guide (ORD) - 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": "2018-08-08T19:18:20Z" }, { "url": "https://www.marriott.com/en-us/hotels/chico-springhill-suites-chicago-ohare/overview/?scid=f2ae0541-1279-4f24-b197-a979c79310b0", "title": "Hotel near O'Hare Airport with Free Shuttle | Springhill Suites", "time_published": "2025-02-19T00:00:00Z" }, { "url": "https://www.marriott.com/en-us/hotels/chico-springhill-suites-chicago-ohare/overview/", "title": "Hotel near O'Hare Airport with Free Shuttle | Springhill Suites Chicago O'Hare", "time_published": "2023-08-11T00:00:00Z" }, { "url": "https://www.sleepinginairports.net/sleep-guide/sleeping-in-chicago-ohare-airport.htm", "title": "Sleeping in Chicago O’Hare Airport", "time_published": "2024-09-12T00:00:00Z" }, { "url": "https://en.wikipedia.org/wiki/O%27Hare%20International%20Airport", "title": "O'Hare International Airport", "time_published": "2026-04-30T12:30:58Z" }, { "url": "https://www.marriott.com/en-us/hotels/chist-chicago-marriott-suites-ohare/overview/?scid=f2ae0541-1279-4f24-b197-a979c79310b0", "title": "Hotels Near O'Hare Airport in Chicago | Chicago Marriott Suites O'Hare Hotel", "time_published": "2023-08-11T00:00:00Z" } ], "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 O'Hare Intl Airport?", "answer": "O'Hare International Airport offers currency exchange through ATMs and banks located throughout the terminals. A chapel and an interfaith room are available for prayer, and free Wi‑Fi is provided across the airport, with charging stations to keep devices powered.", "toolsUsed": [], "references": [ { "url": "https://flychicago.com/ohare/ServicesAmenities/services/pages/default.aspx", "title": "Services | Chicago O’Hare International Airport (ORD)", "time_published": "2026-05-05T00:00:00Z" }, { "url": "https://www.flychicago.com/ohare/map", "title": "Map | Chicago O’Hare International Airport (ORD)", "time_published": "2026-05-27T00:00:00Z" }, { "url": "https://en.wikipedia.org/wiki/O%27_Hare_International_Airport", "title": "O'Hare International Airport", "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png", "time_published": "2003-06-18T03:43:42Z" }, { "url": "https://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/air_traffic_services/atct/ord", "title": "Chicago O'Hare International Airport (ORD) | Federal Aviation Administration", "time_published": "2023-02-23T00:00:00Z" }, { "url": "https://en.wikipedia.org/w/index.php?oldid=828932762&redirect=no&title=O%27Hare_International_Airport", "title": "O'Hare International Airport - Wikipedia", "time_published": "2003-06-18T03:43:42Z" } ], "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 Houston to Chicago?", "answer": "On nonstop flights from Houston to Chicago, United Airlines most often uses the Airbus A321neo and Boeing 737 family (MAX 9 and 737-900), while American and Southwest fly Boeing 737-800s, and Frontier and Southwest sometimes appear with unspecified types. The exact aircraft varies by day and airline, but these narrowbody jets dominate the route. Wi-Fi and seatback entertainment are widely available on these mainline services.", "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 Houston to Chicago?", "answer": "United Airlines and American Airlines (including regional flights operated by Republic, Envoy, and PSA) serve nonstop flights from Houston to Chicago. United is a member of Star Alliance, while American belongs to oneworld. Frontier also operates nonstop service but is not part of any global 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 Houston?", "answer": "At Houston Bush Intercontinental (IAH), the standout airline-branded lounge is the United Club, with multiple locations across terminals — including Terminal C near the United gates — offering complimentary snacks, drinks, and Wi-Fi; access is included for United Club members, business- and first-class passengers on Star Alliance carriers, and Star Alliance Gold elites. Terminal D houses the Air France Lounge (opposite Gate D18B, open 11:00–19:00) and the KLM Crown Lounge (06:00–21:00), both welcoming SkyTeam business-class and elite passengers, with the KLM lounge featuring sleep pods and spa treatments. For independent options, The Centurion Lounge in Terminal D provides complimentary craft cocktails, hot food, and shower suites for American Express Platinum and Centurion cardholders, while Minute Suites in Terminal C offers private nap rooms available for rent by any traveler. Day passes are not sold for the airline lounges, but eligible credit cards and lounge membership programs can grant entry.", "toolsUsed": [], "references": [ { "url": "https://fly2houston.com/iah", "title": "IAH Houston Airport | George Bush Intercontinental", "time_published": "2026-06-23T05:00:00Z" }, { "url": "https://americanexpress.com/en-xb/travel/lounges/the-platinum-card/IAH", "title": "American Express Lounges at George Bush Intercontinental Airport | Amex XB", "favicon": "https://www.americanexpress.com/apple-touch-icon-152x152.png" }, { "url": "https://americanexpress.com/en-us/travel/lounges/delta-reserve/IAH", "title": "American Express Lounges at George Bush Intercontinental 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/george-bush-intercontinental/iah7-air-france-lounge", "title": "Air France Lounge IAH AIRPORT Terminal D George Bush Intercontinental | Priority Pass", "time_published": "2024-11-05T00:00:00Z" }, { "url": "https://prioritypass.com/lounges/usa/houston-tx-george-bush-intercontinental/iahm-united-club", "title": "George Bush Intercontinental Airport - Houston IAH Lounges - IAH Airport Guide and lounges. | Priority Pass", "time_published": "2024-11-05T00:00:00Z" } ], "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." }, "q21": { "question": "What is the baggage allowance on this route from Houston to Chicago?", "answer": "Baggage allowance on Houston–Chicago flights varies by airline and fare type. Basic economy tickets often exclude a checked bag and may restrict carry‑ons to a small personal item only. Standard economy typically includes a carry‑on and personal item, with checked bags available for a fee." }, "q22": { "question": "What cabin and seat options are typical from Houston to Chicago?", "answer": "Flights from Houston to Chicago typically offer Economy and standard domestic First class with recliner seats; flat‑bed Business and Premium Economy are not common on this domestic route." }, "q23": { "question": "Are same‑day changes or standby possible on this route?", "answer": "Policies differ by airline and fare; flexible and premium tickets often allow same‑day changes or standby, while Basic Economy typically does not." } } } }