Great-circle route ATL ↔ IAH. Faint dots are other airports, for geographic context. Download this map — free to reuse with a link back to this page.
Frequencies below are per direction, from our most recent schedule sample.
| Direction | Frequency | Days | Airlines |
|---|---|---|---|
| ATL → IAH Atlanta to Houston |
103/wk | Daily | Delta Air Lines, Frontier Airlines, United Airlines |
| IAH → ATL Houston to Atlanta |
103/wk | Daily | Delta Air Lines, Frontier Airlines, United Airlines |
Where a direction shows “—” we track it as an operating nonstop but hold no schedule sample for it — we would rather show nothing than guess.
In 2025, airlines reported 1,377,092 passengers on 10,148 flights between ATL and IAH — about 3,775 a day — filling 83% of the 1,660,814 seats flown. Delta Air Lines Inc. carried the most passengers (51%).
Source: US DOT T-100 segment reports — actual airline-reported traffic, scheduled service only, both directions combined. Cargo and charter flights excluded.
3 airlines fly the ATL–IAH nonstop, including Delta Air Lines, Frontier Airlines, United Airlines.
Recent scheduled departures on this route have used the Airbus A320 NEO, Boeing 737-800, Airbus A321, Airbus A320 and 2 other types.
Aircraft assignments change by season and by time of day.
The distance between Hartsfield Jackson Atlanta International Airport and George Bush Intercontinental Houston Airport is 688 miles, or 1,107 kilometres.
| Great-circle distance | 688 mi |
| Kilometres | 1,107 km |
| Nautical miles | 598 nmi |
Measured airport to airport. The actual track is longer — aircraft follow airways, avoid restricted airspace and route around weather.
Yes. 3 airlines fly the route nonstop, with about 206 departures a week across both directions. The route is in our live nonstop dataset, last seeded 2026-07-07.
About 1h 58m in the air. That is a great-circle estimate from the 688-mile distance, not a scheduled block time — an airline's published time will differ by roughly 15 to 45 minutes depending on routing, winds and taxi.
About 103 a week from Atlanta to Houston and 103 a week from Houston to Atlanta, from our most recent schedule sample.
Delta Air Lines, Frontier Airlines, United Airlines.
In 2025, airlines reported 1,377,092 passengers on 10,148 scheduled flights between ATL and IAH — about 3,775 a day — filling 83% of the seats flown. Source: US DOT T-100 segment reports, both directions combined.
Recent scheduled departures have used the Airbus A320 NEO, Boeing 737-800, Airbus A321, Airbus A320. Assignments change by season and by time of day.
