Flights Atlanta → Houston
ATL → IAH
How long is the flight from Atlanta to Houston?
The flight from Atlanta (ATL) to Houston (IAH) takes 1h 39m on average. That is the median time recorded across 7 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
Route overview
The flight route from Atlanta to Houston operates with a high frequency of 1,308 total flights and features an on-time performance rate of 77%. Aircraft types used on this route include the McDonnell Douglas MD-88, Boeing 717, Airbus A320, Airbus A319, Canadair Regional Jet 700, and Embraer 170. With Houston's airport serving over 40 million passengers annually, this route is a crucial link between two major cities.
Your rights on this US flight (DOT)
US flights have no statutory cash compensation for delays. Under the US DOT rules, if your flight is cancelled or significantly changed and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Amenities for controllable delays depend on each airline's contract of carriage.
US flight refund rules & checker →General information, not legal advice.
The Atlanta (ATL) → Houston (IAH) route is operated by Air France, ITA Airways, Delta Air Lines, KLM Royal Dutch Airlines, Qatar Airways, United Airlines. Across 3150 flights monitored in recent months, 75% arrived on time (within 15 min of schedule), with an average delay of 17 minutes. The cancellation rate is 1.71%. FlightGuard's average computed risk is 25.5/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Houston the average ATFM delay is 5.5 minutes (main cause: atfm). Departing from Atlanta the average ATFM delay is 5.5 minutes.
Heading to Houston: what to expect in this direction
Flying from Atlanta (ATL) to Houston (IAH) heads west for about 1,108 km, a flight time of roughly 1h 39m.
Departures from Atlanta on this leg cluster in the morning window: about 35% of ATL-IAH flights take off then.
Air-traffic congestion: departing Atlanta the average ATFM delay is 5.5 min (atfm); arriving into Houston it is 5.5 min (atfm).
Across 3,150 tracked ATL-IAH flights, 75% left on time with an average delay of 17 min and a 1.7% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Delta Air Lines (DL) | 85% | 1 min | 0.8% |
| United Airlines (UA) | 83% | 5 min | 1.3% |
| Air France (AF) | 82% | 28 min | 0.0% |
| KLM Royal Dutch Airlines (KL) | 82% | 19 min | 5.9% |
| ITA Airways (AZ) | 45% | 39 min | 0.6% |
Airlines operating ATL-IAH
Airports
Frequently asked questions about ATL-IAH
The flight from Atlanta (ATL) to Houston (IAH) takes 1h 39m on average. That is the median time recorded across 7 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
On the Atlanta (ATL) -> Houston (IAH) route, on-time performance is 75% with an average delay of 17 minutes, based on 3150 tracked flights.
The cancellation rate on Atlanta-Houston is 1.71% across 3150 monitored flights.
The route is operated by 6 airlines: Air France, ITA Airways, Delta Air Lines, KLM Royal Dutch Airlines, Qatar Airways, United Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at Houston, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
US flights have no statutory cash compensation for delays. Under US DOT rules, if the airline cancels or significantly changes your flight and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Meals or hotels for controllable delays depend on each airline's contract of carriage.
