Atlanta to Houston (ATL-IAH): nonstop upgrade & award space

United Airlines, Delta Air Lines, and Frontier Airlines fly nonstop between Atlanta (ATL) and Houston (IAH), roughly 133 times a week. With this many departures on a short sector, premium cabins are small and turn over daily, so upgrade or award space opens and closes within hours. 2LNR tracks confirmed upgrade and award space on Delta Air Lines, on every ATL to IAH departure, so you know which flights have space before you book.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

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133
Nonstop flights a week
688 mi
Nonstop distance
Free
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Atlanta to Houston flight schedule

Scheduled nonstop departures for ATL to IAH, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Atlanta (ATL) to Houston (IAH)
Date Flight Airline Departs ATL Arrives IAH Duration Aircraft
F9 1403Frontier Airlines06:0707:202h 13m32Q
UA 532United Airlines07:0508:262h 21m738
DL 1585Delta Air Lines07:3008:312h 1m321
DL 1682Delta Air Lines09:5811:052h 7m321
UA 2249United Airlines11:4012:562h 16m319
UA 425United Airlines11:4012:562h 16m319
DL 1572Delta Air Lines12:2513:302h 5m321
DL 2890Delta Air Lines14:3215:422h 10m320
DL 1223Delta Air Lines14:4715:542h 7m320
UA 3992United Airlines15:5717:232h 26mE7W
UA 3987United Airlines16:0317:252h 22mE7W
DL 1131Delta Air Lines16:2517:342h 9m321
DL 2327Delta Air Lines18:3019:332h 3m321
UA 2376United Airlines18:5820:182h 20m7M9
DL 1284Delta Air Lines18:5920:082h 9m321
F9 4075Frontier Airlines21:0022:142h 14m32Q
DL 1601Delta Air Lines21:3022:332h 3m321
F9 1403Frontier Airlines06:0007:172h 17m32Q
UA 532United Airlines07:0508:262h 21m738
DL 1585Delta Air Lines07:3008:312h 1m321
DL 1682Delta Air Lines09:5811:052h 7m321
UA 2249United Airlines11:4012:562h 16m319
UA 425United Airlines11:4012:562h 16m319
DL 1572Delta Air Lines12:2513:302h 5m321
F9 3217Frontier Airlines13:4715:052h 18m32Q
DL 2890Delta Air Lines14:3215:422h 10m320
DL 1223Delta Air Lines14:4715:542h 7m320
UA 3992United Airlines15:5717:232h 26mE7W
UA 3987United Airlines16:0317:252h 22mE7W
DL 1131Delta Air Lines16:2517:342h 9m321
DL 2327Delta Air Lines18:3019:332h 3m321
UA 2376United Airlines18:5820:182h 20m739
DL 1284Delta Air Lines18:5920:082h 9m321
F9 4075Frontier Airlines21:0822:302h 22m321
DL 1601Delta Air Lines21:3022:332h 3m321
F9 1403Frontier Airlines06:1507:342h 19m32Q
UA 532United Airlines07:0508:262h 21m738
DL 1585Delta Air Lines07:3008:312h 1m321
DL 1682Delta Air Lines09:5811:052h 7m321
F9 2399Frontier Airlines11:1512:402h 25m32Q

Showing the first 40 of 120 scheduled ATL to IAH departures across the next 7 days with service. 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 has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every ATL to IAH date on the interactive map

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.

See real availability

Confirmed upgrade and award seats on each ATL to IAH departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are 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. 2LNR tracks confirmed upgrade and award space on each of them.

See ATL to IAH on the interactive map →

Frequently asked questions about ATL to IAH

How far is Houston from Atlanta?
ATL to IAH covers about 688 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
Which airlines fly nonstop from ATL to IAH?
United Airlines, Delta Air Lines, and Frontier Airlines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on Delta Air Lines.
How many flights a week are there from ATL to IAH?
About 133 nonstop flights a week run between Atlanta and Houston in the current schedule, operated by United Airlines, Delta Air Lines, 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 21:30, local time at Atlanta. The schedule table on this page lists every departure by date, with its arrival time 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.

Never miss ATL to IAH upgrade or award space

See what is open by date on this route, the next 14 days free on every product and the full horizon on Pro.

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