--- title: "Chicago (ORD) to Houston (IAH) flights: who flies it" description: "American Airlines, United Airlines and one more airline fly nonstop from ORD to IAH, about 158 flights a week. Upgrade and award space by date on 2LNR, next 14 days free." canonical: "https://2lnr.com/routes/ord-iah" url: "https://2lnr.com/routes/ord-iah.md" date_modified: "2026-10-18T05:10:47Z" --- # Chicago to Houston (ORD-IAH): nonstop upgrade & award space United Airlines, American Airlines, and Frontier Airlines fly nonstop between Chicago (ORD) and Houston (IAH), roughly 158 times a week. The timetable below shows the nonstop scheduled at 2h 49m to 3h 1m for the 926 miles. 2LNR checks confirmed upgrade and award space on American Airlines flights on this route, so you can see which departures have space before you book. Schedule last confirmed October 18, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book. Updated October 24, 2026. See ORD to IAH on the interactive map [Get started free](https://2lnr.com/login) 158 Flights a week, 4-week average 2h 49m to 3h 1m Scheduled flight time 926 mi Nonstop distance Free To get started ## Chicago to Houston flight schedule Scheduled nonstop departures for ORD to IAH starting October 23, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book. Scheduled nonstop departures from Chicago (ORD) to Houston (IAH) | Date | Flight | Airline | Departs ORD | Arrives IAH | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Fri, Oct 23 | UA 1172 | United Airlines | 05:30 | 08:19 | 2h 49m | [Boeing 737 MAX 9](https://2lnr.com/seatmaps/ua/737-max-9.md) | | Fri, Oct 23 | UA 2228 | United Airlines | 06:25 | 09:14 | 2h 49m | [Airbus A321neo family](https://2lnr.com/seatmaps/ua/a321neo.md) | | Fri, Oct 23 | AA 2504 | American Airlines | 07:21 | 10:14 | 2h 53m | [Airbus A319](https://2lnr.com/seatmaps/aa/a319.md) | | Fri, Oct 23 | UA 1231 | United Airlines | 07:30 | 10:23 | 2h 53m | Airbus A321neo family | | Fri, Oct 23 | F9 3135 | Frontier Airlines | 07:40 | 10:39 | 2h 59m | [Airbus A321neo family](https://2lnr.com/seatmaps/f9/a321neo.md) | | Fri, Oct 23 | UA 535 | United Airlines | 08:45 | 11:41 | 2h 56m | Airbus A321neo family | | Fri, Oct 23 | UA 2767 | United Airlines | 10:32 | 13:27 | 2h 55m | Boeing 737 MAX 9 | | Fri, Oct 23 | AA 3322 | American Airlines | 11:00 | 13:51 | 2h 51m | [Boeing 737-800](https://2lnr.com/seatmaps/aa/737-800.md) | | Fri, Oct 23 | UA 1448 | United Airlines | 12:45 | 15:38 | 2h 53m | Airbus A321neo family | | Fri, Oct 23 | AA 4595 | American Airlines | 13:10 | 16:04 | 2h 54m | [Embraer E175](https://2lnr.com/seatmaps/aa/e175.md) | | Fri, Oct 23 | AA 3039 | American Airlines | 13:50 | 16:43 | 2h 53m | Airbus A319 | | Fri, Oct 23 | UA 2062 | United Airlines | 14:10 | 17:11 | 3h 1m | Airbus A321neo family | | Fri, Oct 23 | AA 2416 | American Airlines | 15:13 | 18:07 | 2h 54m | Airbus A319 | | Fri, Oct 23 | UA 714 | United Airlines | 16:11 | 19:10 | 2h 59m | Airbus A321neo family | | Fri, Oct 23 | AA 2708 | American Airlines | 17:10 | 20:06 | 2h 56m | Airbus A319 | | Fri, Oct 23 | UA 1921 | United Airlines | 17:53 | 20:47 | 2h 54m | Airbus A321neo family | | Fri, Oct 23 | UA 2788 | United Airlines | 18:29 | 21:20 | 2h 51m | Boeing 737 MAX 9 | | Fri, Oct 23 | UA 2813 | United Airlines | 19:55 | 22:45 | 2h 50m | Boeing 737 MAX 9 | | Fri, Oct 23 | AA 3144 | American Airlines | 21:42 | 00:36 | 2h 54m | Boeing 737-800 | | Fri, Oct 23 | UA 2665 | United Airlines | 21:45 | 00:37 | 2h 52m | Airbus A321neo family | | Sat, Oct 24 | UA 1172 | United Airlines | 05:30 | 08:19 | 2h 49m | Boeing 737 MAX 9 | | Sat, Oct 24 | UA 2228 | United Airlines | 06:25 | 09:14 | 2h 49m | Airbus A321neo family | | Sat, Oct 24 | AA 2504 | American Airlines | 07:21 | 10:14 | 2h 53m | Airbus A319 | | Sat, Oct 24 | UA 1231 | United Airlines | 07:30 | 10:23 | 2h 53m | Airbus A321neo family | | Sat, Oct 24 | F9 3135 | Frontier Airlines | 07:40 | 10:39 | 2h 59m | Airbus A321neo family | | Sat, Oct 24 | UA 535 | United Airlines | 08:45 | 11:41 | 2h 56m | Airbus A321neo family | | Sat, Oct 24 | UA 2767 | United Airlines | 10:32 | 13:28 | 2h 56m | Airbus A321neo family | | Sat, Oct 24 | AA 3322 | American Airlines | 11:00 | 13:51 | 2h 51m | Boeing 737-800 | | Sat, Oct 24 | UA 1448 | United Airlines | 12:45 | 15:38 | 2h 53m | Airbus A321neo family | | Sat, Oct 24 | AA 4595 | American Airlines | 13:10 | 16:04 | 2h 54m | Embraer E175 | | Sat, Oct 24 | AA 3039 | American Airlines | 13:50 | 16:43 | 2h 53m | Airbus A319 | | Sat, Oct 24 | UA 2062 | United Airlines | 14:10 | 17:11 | 3h 1m | Airbus A321neo family | | Sat, Oct 24 | AA 2416 | American Airlines | 15:13 | 18:07 | 2h 54m | Airbus A319 | | Sat, Oct 24 | UA 714 | United Airlines | 16:11 | 19:10 | 2h 59m | Airbus A321neo family | | Sat, Oct 24 | AA 2708 | American Airlines | 17:10 | 20:06 | 2h 56m | Airbus A319 | | Sat, Oct 24 | UA 1921 | United Airlines | 17:53 | 20:47 | 2h 54m | Airbus A321neo family | | Sat, Oct 24 | UA 2788 | United Airlines | 18:29 | 21:20 | 2h 51m | Boeing 737 MAX 9 | | Sat, Oct 24 | UA 2813 | United Airlines | 19:55 | 22:45 | 2h 50m | Boeing 737 MAX 9 | | Sat, Oct 24 | UA 2701 | United Airlines | 21:00 | 23:50 | 2h 50m | [Boeing 737-900](https://2lnr.com/seatmaps/ua/737-900.md) | | Sat, Oct 24 | UA 2705 | United Airlines | 21:20 | 00:11 | 2h 51m | Boeing 737 MAX 9 | Showing the first 40 of 162 scheduled ORD to IAH departures across 7 days with service, starting October 23, 2026. Every remaining date is on the interactive map. Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure. See every ORD to IAH date on the interactive map ## Aircraft on the Chicago to Houston nonstop In the schedule table on this page, United Airlines flies the [Airbus A321neo family](https://2lnr.com/seatmaps/ua/a321neo.md), the [Boeing 737 MAX 9](https://2lnr.com/seatmaps/ua/737-max-9.md), and the [Boeing 737-900](https://2lnr.com/seatmaps/ua/737-900.md). American Airlines flies the [Airbus A319](https://2lnr.com/seatmaps/aa/a319.md), the [Boeing 737-800](https://2lnr.com/seatmaps/aa/737-800.md), and the [Embraer E175](https://2lnr.com/seatmaps/aa/e175.md). Frontier Airlines flies the [Airbus A321neo family](https://2lnr.com/seatmaps/f9/a321neo.md). Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## Confirmed upgrade & award space on ORD to IAH departures 2LNR tracks confirmed upgrade and award space on American Airlines, segment by segment and date by date. Open the calendar for Chicago to Houston to see which departures have space, the next 14 days free on every product and the full horizon on Pro. American Airlines award space was open on 11 of the 14 Chicago to Houston departure dates from October 19 to November 1 that 2LNR checked in the 7 days to October 19, 2026. ### See real availability Confirmed upgrade or award seats by date on the ORD to IAH departures 2LNR tracks, checked against live inventory so you know what's open before you book. ### Set an alert Premium inventory turns over fast. Watch this route on Pro and 2LNR notifies you when space appears on a date you're tracking. ### Plan on the map See ORD to IAH on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Chicago to Houston nonstop Carriers operating ORD to IAH nonstop in the current schedule. Where 2LNR tracks the carrier, its departures show confirmed upgrade or award space by date. - [United Airlines (UA) route map](https://2lnr.com/routes/airlines/ua.md)\ [The aircraft UA flies](https://2lnr.com/seatmaps/ua.md) - [American Airlines (AA) route map](https://2lnr.com/routes/airlines/aa.md)\ [The aircraft AA flies](https://2lnr.com/seatmaps/aa.md) - [Frontier Airlines (F9) route map](https://2lnr.com/routes/airlines/f9.md)\ [The aircraft F9 flies](https://2lnr.com/seatmaps/f9.md) See ORD to IAH on the interactive map → ## Frequently asked questions about ORD to IAH **How long is the flight from Chicago (ORD) to Houston (IAH)?** Scheduled flight times from Chicago (ORD) to Houston (IAH) run from 2h 49m to 3h 1m across the departures in the schedule table on this page. The nonstop covers about 926 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from ORD to IAH?** United Airlines, American Airlines, and Frontier Airlines fly ORD to IAH nonstop. 2LNR tracks confirmed upgrade and award space on American Airlines. **How many flights a week are there from ORD to IAH?** About 158 nonstop flights a week run between Chicago (ORD) and Houston (IAH) in the current schedule, operated by United Airlines, American Airlines, and Frontier Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next. **What time do flights from ORD to IAH depart?** Scheduled ORD to IAH nonstops in the next 7 days with service leave between 05:30 and 21:45, local time at Chicago. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate ORD to IAH nonstop?** The schedule table on this page lists 22 flight numbers for ORD to IAH nonstops, including UA 535, UA 1172, UA 1231, UA 2228, and UA 2767 on United Airlines; AA 2504 and AA 3322 on American Airlines; and F9 3135 on Frontier Airlines. The table lists each departure by date with its times and aircraft. **How do I check upgrade or award availability on ORD to IAH?** Open the ORD to IAH route on the interactive map or the matrix to see confirmed upgrade and award space by date on American Airlines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens. Flying the other way? See [IAH to ORD upgrade and award space](https://2lnr.com/routes/iah-ord.md). Award seats rather than schedules? See [American Airlines award availability](https://2lnr.com/awards/aa.md). Looking beyond this route? See [every route from Chicago (ORD)](https://2lnr.com/routes/ord.md), or [every route from Houston (IAH)](https://2lnr.com/routes/iah.md). Nonstops to Houston (IAH) from other airports within 150 miles of Chicago (ORD): - [Milwaukee (MKE) to Houston (IAH)](https://2lnr.com/routes/mke-iah.md), 67 miles from ORD - [Grand Rapids (GRR) to Houston (IAH)](https://2lnr.com/routes/grr-iah.md), 136 miles from ORD Nonstops from Chicago (ORD) to other airports within 150 miles of Houston (IAH): - [Chicago (ORD) to Austin (AUS)](https://2lnr.com/routes/ord-aus.md), 140 miles from IAH Distances are great-circle between the airports, not driving distance. - [How American upgrades clear](https://2lnr.com/about/aa/upgrades.md) - [How to read award availability by date](https://2lnr.com/guides/award-availability.md) ## Never miss ORD to IAH upgrade or award space See what's open by date on this route, the next 14 days free on every product and the full horizon on Pro. [Get started free](https://2lnr.com/login)