{ "response": { "Key": "CHI-IAH", "orig": { "code": "CHI", "type": "airport", "city": "Chicago", "fullCity": "Chicago, Illinois", "airport": "Dupage County" }, "dest": { "code": "IAH", "type": "airport", "city": "Houston", "fullCity": "Houston, Texas", "airport": "George Bush Intercontinental Airport" }, "faq": { "q0": { "question": "What is the typical flight duration from Chicago to Houston?", "answer": "A nonstop flight from Chicago (ORD) to Houston (IAH) takes about 2 hours 45 minutes to 3 hours. With one stop, the total travel time often extends to 4.5–6 hours, depending on the layover city. The return flight is typically similar in duration." }, "q1": { "question": "Are there any direct flights from Chicago to Houston?", "answer": "Yes, there are plenty of direct flights from Chicago to Houston. United and American (including American Eagle operated by Republic, Envoy, and PSA) fly nonstop from O'Hare daily, with United alone running over 230 flights a week and American adding roughly 125 more. Frontier also flies nonstop from both O'Hare and Midway on select days — O'Hare on Monday, Thursday, Friday, and Sunday, and Midway on Monday, Thursday, Friday, Saturday, and Sunday.", "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 and weekly frequencies are summarized 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). Where available, on-time and cancellation rates come from the U.S. Bureau of Transportation Statistics (BTS) Airline On-Time Performance dataset, and typical fares from the U.S. DOT Airline Origin and Destination Survey (DB1B), a quarterly 10% sample of tickets sold.", "toolsUsed": [ "route_airlines", "flight_schedule" ] }, "q3": { "question": "What are the ground transportation options in Houston?", "answer": "From George Bush Intercontinental Airport (IAH), you can reach downtown Houston—about 23 miles south—via taxi, ride‑share (Uber/Lyft), rental car, shared shuttle, or public bus (METRO route 102 with a downtown express). Taxis and ride‑shares are the fastest door‑to‑door options, while the bus is the most affordable but slower. The most‑used choice is ride‑share, thanks to convenience and availability at all terminals. Rental cars are also popular and are picked up at a consolidated center a short shuttle ride away. Limousines and pre‑arranged sedans are available as premium alternatives.", "toolsUsed": [], "references": [ { "url": "https://fly2houston.com/iah", "title": "IAH Houston Airport | George Bush Intercontinental", "time_published": "2026-06-23T05:00:00Z" }, { "url": "https://fly2houston.com/iah/ground-transportation/", "title": "Ground Transportation | Airport Taxi, Uber, Lyft, Shuttle & Rent Car Houston", "time_published": "2026-01-23T19:44:20Z" }, { "url": "https://en.wikipedia.org/wiki/George%20Bush%20Intercontinental%20Airport", "title": "George Bush Intercontinental Airport", "time_published": "2026-05-01T12:20:43Z" }, { "url": "https://en.wikipedia.org/?diff=597698305", "title": "George Bush Intercontinental Airport: Difference between revisions - Wikipedia", "time_published": "2014-03-01T18:21:06Z" }, { "url": "https://faa.gov/regulations_policies/orders_notices/index.cfm/go/document.information/documentID/1023367", "title": "Notice JO 7110.659 - Non-Intersecting Converging Runway Operations for George Bush Intercontinental/Houston Airport Traffic Control Tower and Houston Intercontinental Terminal Radar Approach Control (", "time_published": "2026-04-10T00:00:00Z" } ] }, "q4": { "question": "When is the cheapest time to fly from Chicago to Houston?", "answer": "The cheapest months to fly from Chicago to Houston are September, August, and April, with average fares around $219–$276. The most expensive month is December, averaging $445, followed by June and March.", "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 Chicago to Houston?", "answer": "For flights from Chicago to Houston, the best time to book is roughly 4-6 weeks before departure, with average fares around $148. Booking about 25 days out often yields the lowest price, around $144, while waiting until the last minute can push fares above $350. During peak summer and holiday periods, booking 6-8 weeks ahead is safer to avoid steep price hikes.", "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 Chicago to Houston?", "answer": "Yes, United Airlines operates nonstop red-eye flights from Chicago O'Hare (ORD) to Houston (IAH), with 30 weekly departures every day of the week. The typical departure window is between 9:05 PM and 9:50 PM. These flights arrive around midnight to 1 AM local time — they land the same night, not the next morning.", "methodology": "Red-eye flights are identified from scheduled local departure and arrival times in our flight-schedule database — built from published airline timetables and official schedule data, including U.S. Department of Transportation records for domestic routes — flagging services that depart late at night and arrive the following morning; for connecting itineraries the red-eye is based on the timing of the overnight long-haul leg.", "toolsUsed": [ "redeye_flights" ] }, "q7": { "question": "Which airlines usually operate this route from Chicago to Houston?", "answer": "United, American, and Frontier fly nonstop from Chicago to Houston. United operates up to 232 weekly flights from O'Hare with a median fare around $232, while American and its regional partners (Republic, Envoy, and PSA) offer about 125 weekly flights. Frontier serves both O'Hare and Midway on select days with a handful of flights. Other carriers may also serve this route with connections.", "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 Chicago and Houston?", "answer": "Common layover cities between Chicago and Houston include Dallas, Denver, and Atlanta. Dallas offers frequent connections on American and Southwest. Denver provides a central hub for United with efficient transfers. Atlanta is a major Delta hub with broad onward options, though it adds a slight detour. All three keep total travel time competitive." }, "q9": { "question": "How reliable are on‑time departures on this route from Chicago to Houston?", "answer": "On‑time performance is decent, but afternoon thunderstorms in both cities can cause delays. Early morning flights on United and Southwest are typically more reliable." }, "q11": { "question": "What documents should I bring with me to the airport when flying from Chicago to Houston?", "answer": "For this domestic U.S. flight, bring a Real ID or passport, ensure the name matches your ticket and carry payment for baggage and any required health documents." }, "q12": { "question": "Which airport should I use in Houston?", "answer": "George Bush Intercontinental (IAH) is Houston's primary airport, a major hub for United Airlines, located about 23 miles north of downtown. William P. Hobby (HOU) is closer to downtown, about 7 miles southeast, and primarily serves Southwest Airlines with domestic flights." }, "q13": { "question": "How do I get to Dupage County from the city center?", "answer": "DuPage Airport (DPA) is a general aviation airport about 29 miles west of downtown Chicago, with no direct public transit link from the city center. The most practical option is driving or taking a taxi/ride-share, which takes around 40–60 minutes depending on traffic; ride-share and taxis are the fastest and most popular choices for those without a car. Parking is plentiful and relatively affordable at the airport itself. There is no dedicated shuttle bus or direct train service, though you could take a Metra train to a nearby suburb and then a short taxi or ride-share the rest of the way, but that is less convenient.", "toolsUsed": [], "references": [ { "url": "https://en.wikipedia.org/wiki/DuPage_Airport", "title": "DuPage Airport", "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png", "time_published": "2026-07-16T20:45:00Z" }, { "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/DuPage%20Airport", "title": "DuPage Airport", "time_published": "2026-03-13T22:38:40Z" }, { "url": "https://en.wikipedia.org/wiki/Transportation%20in%20Chicago", "title": "Transportation in Chicago", "time_published": "2026-04-13T06:59:09Z" }, { "url": "https://en.wikipedia.org/wiki/Chicago%20Executive%20Airport", "title": "Chicago Executive Airport", "time_published": "2026-03-26T11:15:20Z" } ] }, "q14": { "question": "Are there hotels or sleeping facilities at Houston airport?", "answer": "George Bush Intercontinental Airport (IAH) has one on-site hotel, the Houston Airport Marriott, located between Terminals B and C and accessible via the complimentary underground Subway train. No capsule hotels or sleeping pods are available at the airport. Several nearby hotels, such as the Sheraton North Houston, offer free shuttle service to and from the terminals.", "toolsUsed": [], "references": [ { "url": "https://fly2houston.com/iah", "title": "IAH Houston Airport | George Bush Intercontinental", "time_published": "2026-06-23T05:00:00Z" }, { "url": "https://www.sleepinginairports.net/guides/houston-airport-guide.htm", "title": "Houston Airport Guide (IAH) - 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": "2018-08-25T14:40:18Z" }, { "url": "https://www.marriott.com/en-us/hotels/hougi-sheraton-north-houston-at-george-bush-intercontinental/overview/", "title": "Houston IAH Airport Hotels | Sheraton North Houston", "time_published": "2024-10-11T00:00:00Z" }, { "url": "https://www.marriott.com/en-us/hotels/hougi-sheraton-north-houston-at-george-bush-intercontinental/overview/?scid=f2ae0541-1279-4f24-b197-a979c79310b0", "title": "Houston IAH Airport Hotels | Sheraton North Houston", "time_published": "2025-02-19T00:00:00Z" }, { "url": "https://en.wikipedia.org/wiki/George%20Bush%20Intercontinental%20Airport", "title": "George Bush Intercontinental Airport", "time_published": "2026-05-01T12:20:43Z" }, { "url": "https://fly2houston.com/iah/hotels", "title": "Houston Airport Marriott", "time_published": "2026-01-23T00:00:00Z" } ] }, "q15": { "question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at George Bush Intercontinental Airport?", "answer": "George Bush Intercontinental Airport (IAH) provides prayer rooms or chapels in multiple terminals, with an interfaith chapel located in Terminal D. Free Wi-Fi is available throughout the airport for all passengers. Currency exchange services are offered in Terminals D and E for international travelers. Other amenities include lounges, nursing rooms, and pet relief areas.", "toolsUsed": [], "references": [ { "url": "https://fly2houston.com/iah", "title": "IAH Houston Airport | George Bush Intercontinental", "time_published": "2026-06-23T05:00:00Z" }, { "url": "https://fly2houston.com/iah/related-content/a-first-time-travelers-guide-to-houstons-bush-airport", "title": "How to Navigate IAH Airport: A First-Time Traveler’s Guide to Houston’s Bush Airport", "time_published": "2026-01-23T00:00:00Z" }, { "url": "https://en.wikipedia.org/wiki/George%20Bush%20Intercontinental%20Airport", "title": "George Bush Intercontinental Airport", "time_published": "2026-05-01T12:20:43Z" }, { "url": "https://en.wikipedia.org/?diff=597698305", "title": "George Bush Intercontinental Airport: Difference between revisions - Wikipedia", "time_published": "2014-03-01T18:21:06Z" }, { "url": "https://nfdc.faa.gov/nfdcApps/services/ajv5/airportDisplay.jsp?airportId=IAH", "title": "GEORGE BUSH INTCNTL/HOUSTON", "time_published": "2000-01-01T00:00:00Z" } ] }, "q17": { "question": "What aircraft are typically used on flights from Chicago to Houston?", "answer": "On the nonstop Chicago-to-Houston route, United mainly uses Airbus A321neos and Boeing 737 MAX 9s, with some 737-900s. Southwest flies Boeing 737 MAX 8s, while American operates 737-800s and A319s. Frontier's equipment isn't specified in the schedule, but the exact aircraft can vary by day and airline.", "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 Chicago to Houston?", "answer": "United (Star Alliance) and American (oneworld) are the two alliance carriers flying nonstop from Chicago to Houston, while Frontier also operates the route but belongs to no 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" ] }, "q21": { "question": "What is the baggage allowance on this route from Chicago to Houston?", "answer": "On domestic Chicago–Houston flights, Basic Economy often excludes a full-sized carry-on and checked bags, unless you have elite status or a qualifying credit card. Standard economy typically permits a carry-on but may charge for checked luggage, while premium fares usually include both." }, "q22": { "question": "What cabin and seat options are typical from Chicago to Houston?", "answer": "Chicago to Houston flights typically offer Economy and standard recliner Business class. Premium Economy and flat‑bed Business are uncommon on this domestic route." }, "q23": { "question": "Are same‑day changes or standby possible on this route?", "answer": "Policies vary by airline and fare; flexible and premium tickets often allow same‑day changes or standby, while Basic Economy typically does not." } } } }