Atlanta (ATL) to Houston (IAH)
Flight time
≈ 2h 11m
Bearing
251° W
Atlanta (ATL) to Houston (IAH) is 688 miles (1,108 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies ATL–IAH
Filed traffic dataIn May 2026, Delta Air Lines operated the most departures, one of 6 carriers flying nonstop ATL–IAH; the Airbus A321 was the most common aircraft at 45% of departures; flights ran 82% full.
Departures
925
May 2026
Seats
165,031
both directions
Passengers
134,877
both directions
Load factor
81.7%
RPM ÷ ASM
Who flies ATL–IAH?
Delta Air Lines operated the most nonstop ATL–IAH departures in May 2026 (482), one of 6 carriers on the route.
- DL
482 departures · 88,807 seats
Share of departures52.1%84.9%
Load
- UA
238 departures · 36,037 seats
Share of departures25.7%72.4%
Load
- F9
168 departures · 37,108 seats
Share of departures18.2%83.1%
Load
- YV
34 departures · 2,488 seats
Share of departures3.7%88.8%
Load
- NK
2 departures · 419 seats
Share of departures0.2%42.0%
Load
- AA
1 departures · 172 seats
Share of departures0.1%88.9%
Load
What plane flies ATL–IAH?
In May 2026, the Airbus A321 flew 45% of ATL–IAH departures — more than any other aircraft type.
- Airbus A321
418 departures · 84.3% load
45.2% - Airbus A321neo
105 departures · 81.5% load
11.3% - Boeing 737-700
84 departures · 82.5% load
9.1% - Airbus A320
79 departures · 86.3% load
8.5% - Airbus A320neo
51 departures · 85.7% load
5.5% - Boeing 737 MAX 9
51 departures · 57.2% load
5.5% - Embraer E175
34 departures · 88.8% load
3.7% - Boeing 737-900ER
30 departures · 69.8% load
3.2% - Airbus A319
30 departures · 85.3% load
3.2% - Boeing 737-800
28 departures · 81.4% load
3.0% - Boeing 737 MAX 8
7 departures · 60.8% load
0.8% - Boeing 737-900
6 departures · 62.1% load
0.7% - Boeing 717-200
2 departures · 99.1% load
0.2%
How has ATL–IAH traffic changed?
Nonstop ATL–IAH departures rose from 907 in June 2025 to 925 in May 2026.
Monthly nonstop ATL–IAH traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
907 departures · 123,799 passengers
86.0%
Load
July 2025
953 departures · 130,014 passengers
86.3%
Load
August 2025
911 departures · 115,038 passengers
81.3%
Load
September 2025
854 departures · 110,182 passengers
79.8%
Load
October 2025
933 departures · 127,382 passengers
81.9%
Load
November 2025
859 departures · 114,533 passengers
78.9%
Load
December 2025
835 departures · 112,297 passengers
82.7%
Load
January 2026
802 departures · 101,505 passengers
74.2%
Load
February 2026
768 departures · 106,454 passengers
77.5%
Load
March 2026
841 departures · 122,733 passengers
82.7%
Load
April 2026
944 departures · 130,279 passengers
77.6%
Load
May 2026
925 departures · 134,877 passengers
81.7%
Load
By direction
Each direction is filed separately — they rarely match.
ATL → IAH
81.4% full
465 departures · 67,825 passengers
IAH → ATL
82.0% full
460 departures · 67,052 passengers
Nonstop ATL–IAH traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through May 2026; filings from 2025. Public domain (US Government work).
The airports
Atlanta
US
Hartsfield Jackson Atlanta International Airport
Coordinates
33.64°N, 84.43°W
Hemisphere
N · W
Frequently asked
How far is Atlanta (ATL) from Houston (IAH)?
ATL to IAH is 688 miles (1,108 km / 598 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from ATL to IAH?
A nonstop covers the 688-mile great-circle distance in roughly 2h 11m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies ATL–IAH?
In May 2026, the Airbus A321 flew the largest share of departures (45.2%), followed by the Airbus A321neo (11.3%).
What mileage do I earn flying ATL–IAH?
Distance-based programs credit off the 688-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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