Atlanta (ATL) to Houston (IAH) flights: who flies it

Atlanta to Houston flight schedule

Scheduled nonstop departures for ATL to IAH starting October 21, 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 Atlanta (ATL) to Houston (IAH)
Date	Flight	Airline	Departs ATL	Arrives IAH	Duration	Aircraft
Wed, Oct 21	F9 1403	Frontier Airlines	06:00	07:19	2h 19m	Airbus A321neo family
Wed, Oct 21	UA 532	United Airlines	07:05	08:26	2h 21m	Boeing 737-800
Wed, Oct 21	DL 1585	Delta Air Lines	07:25	08:35	2h 10m	Airbus A321
Wed, Oct 21	DL 1682	Delta Air Lines	09:49	10:59	2h 10m	Airbus A320
Wed, Oct 21	F9 2399	Frontier Airlines	09:55	11:22	2h 27m	Airbus A320neo
Wed, Oct 21	UA 425	United Airlines	11:45	13:01	2h 16m	Boeing 737-800
Wed, Oct 21	DL 2709	Delta Air Lines	12:15	13:23	2h 8m	Airbus A320
Wed, Oct 21	DL 2890	Delta Air Lines	13:40	15:00	2h 20m	Airbus A321
Wed, Oct 21	F9 3217	Frontier Airlines	13:47	15:05	2h 18m	Airbus A321
Wed, Oct 21	DL 1874	Delta Air Lines	14:45	15:54	2h 9m	Airbus A321
Wed, Oct 21	DL 1223	Delta Air Lines	15:15	16:35	2h 20m	Airbus A321
Wed, Oct 21	UA 3992	United Airlines	16:03	17:25	2h 22m	Embraer E175
Wed, Oct 21	DL 1131	Delta Air Lines	16:12	17:23	2h 11m	Airbus A320
Wed, Oct 21	DL 1284	Delta Air Lines	18:55	20:02	2h 7m	Airbus A321
Wed, Oct 21	UA 6130	United Airlines	18:56	20:22	2h 26m	Embraer E175
Wed, Oct 21	DL 1892	Delta Air Lines	20:54	22:02	2h 8m	Airbus A321
Wed, Oct 21	F9 4075	Frontier Airlines	21:04	22:23	2h 19m	Airbus A321neo family
Wed, Oct 21	DL 1601	Delta Air Lines	22:40	23:58	2h 18m	Airbus A321
Thu, Oct 22	F9 1403	Frontier Airlines	06:00	07:19	2h 19m	Airbus A321neo family
Thu, Oct 22	UA 532	United Airlines	07:05	08:26	2h 21m	Boeing 737-800
Thu, Oct 22	DL 1585	Delta Air Lines	07:25	08:35	2h 10m	Airbus A321
Thu, Oct 22	UA 3999	United Airlines	09:30	10:57	2h 27m	Embraer E175
Thu, Oct 22	F9 2399	Frontier Airlines	09:55	11:22	2h 27m	Airbus A320neo
Thu, Oct 22	DL 1682	Delta Air Lines	09:59	11:08	2h 9m	Airbus A320
Thu, Oct 22	UA 425	United Airlines	11:45	13:01	2h 16m	Boeing 737 MAX 8
Thu, Oct 22	DL 2709	Delta Air Lines	12:15	13:23	2h 8m	Airbus A320
Thu, Oct 22	DL 2890	Delta Air Lines	13:40	15:00	2h 20m	Airbus A321
Thu, Oct 22	DL 1874	Delta Air Lines	14:45	15:55	2h 10m	Airbus A321
Thu, Oct 22	DL 1223	Delta Air Lines	15:15	16:35	2h 20m	Airbus A321
Thu, Oct 22	UA 3992	United Airlines	16:03	17:25	2h 22m	Embraer E175
Thu, Oct 22	DL 1131	Delta Air Lines	16:12	17:23	2h 11m	Airbus A320
Thu, Oct 22	DL 1284	Delta Air Lines	18:55	20:02	2h 7m	Airbus A321
Thu, Oct 22	UA 6130	United Airlines	18:56	20:22	2h 26m	Embraer E175
Thu, Oct 22	DL 1892	Delta Air Lines	20:54	22:02	2h 8m	Airbus A321
Thu, Oct 22	F9 4075	Frontier Airlines	21:04	22:23	2h 19m	Airbus A321neo family
Thu, Oct 22	DL 1601	Delta Air Lines	22:43	23:55	2h 12m	Airbus A321
Fri, Oct 23	F9 1403	Frontier Airlines	06:00	07:19	2h 19m	Airbus A321neo family
Fri, Oct 23	UA 532	United Airlines	07:05	08:26	2h 21m	Boeing 737-800
Fri, Oct 23	DL 1585	Delta Air Lines	07:25	08:35	2h 10m	Airbus A321
Fri, Oct 23	UA 3999	United Airlines	09:30	10:57	2h 27m	Embraer E175

Showing the first 40 of 131 scheduled ATL to IAH departures across 7 days with service, starting October 21, 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 ATL to IAH date on the interactive map

Aircraft on the Atlanta to Houston nonstop

In the schedule table on this page, Delta Air Lines flies the Airbus A321 and the Airbus A320. United Airlines flies the Embraer E175, the Boeing 737-800, and the Boeing 737 MAX 8. Frontier Airlines flies the Airbus A321neo family, the Airbus A320neo, and the Airbus A321. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

Confirmed upgrade & award space on ATL to IAH departures

2LNR tracks confirmed upgrade and award space on Delta Air Lines, segment by segment and date by date. Open the calendar for Atlanta to Houston to see which departures have space, the next 14 days free on every product and the full horizon on Pro.

Delta Air Lines award space was open on all 14 Atlanta 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 ATL 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 ATL to IAH on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Atlanta to Houston nonstop

Carriers operating ATL to IAH nonstop in the current schedule. Where 2LNR tracks the carrier, its departures show confirmed upgrade or award space by date.

See ATL to IAH on the interactive map →

Frequently asked questions about ATL to IAH

How long is the flight from Atlanta (ATL) to Houston (IAH)?

Scheduled flight times from Atlanta (ATL) to Houston (IAH) run from 2h 7m to 2h 27m across the departures in the schedule table on this page. The nonstop covers about 688 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.

Which airlines fly nonstop from ATL to IAH?

Delta Air Lines, United Airlines, and Frontier Airlines fly ATL to IAH nonstop. 2LNR tracks confirmed upgrade and award space on Delta Air Lines.

How many flights a week are there from ATL to IAH?

About 135 nonstop flights a week run between Atlanta (ATL) and Houston (IAH) in the current schedule, operated by Delta Air Lines, United 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 ATL to IAH depart?

Scheduled ATL to IAH nonstops in the next 7 days with service leave between 06:00 and 22:43, local time at Atlanta. The schedule table on this page lists every departure by date, with its arrival time and aircraft.

Which flights operate ATL to IAH nonstop?

The schedule table on this page lists 19 flight numbers for ATL to IAH nonstops, including DL 1585, DL 1682, DL 2709, and DL 2890 on Delta Air Lines; UA 425 and UA 532 on United Airlines; and F9 1403 and F9 2399 on Frontier Airlines. The table lists each departure by date with its times and aircraft.

How do I check upgrade or award availability on ATL to IAH?

Open the ATL to IAH route on the interactive map or the matrix to see confirmed upgrade and award space by date on Delta Air Lines, 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.