Chicago (ORD) to Houston (IAH) flights: who flies it

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
Fri, Oct 23	UA 2228	United Airlines	06:25	09:14	2h 49m	Airbus A321neo family
Fri, Oct 23	AA 2504	American Airlines	07:21	10:14	2h 53m	Airbus A319
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
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
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
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
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, the Boeing 737 MAX 9, and the Boeing 737-900. American Airlines flies the Airbus A319, the Boeing 737-800, and the Embraer E175. Frontier Airlines flies the Airbus A321neo family. 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.

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.