Flights Washington → Houston
IAD → IAH
How long is the flight from Washington to Houston?
The flight from Washington (IAD) to Houston (IAH) takes 2h 40m on average. That is the median time recorded across 1 scheduled flight on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
Route overview
The flight route from Washington to Houston operates with a high level of punctuality, with 87% of flights arriving on time. Over the course of a year, approximately 40 million passengers pass through the destination airport, and the route sees around 402 total flights using various aircraft models including Airbus A320s and Boeing 737 series planes.
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 Washington (IAD) → Houston (IAH) route is operated by United Airlines. Across 1060 flights monitored in recent months, 84% arrived on time (within 15 min of schedule), with an average delay of 10 minutes. The cancellation rate is 0.85%. FlightGuard's average computed risk is 22.6/100 (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 Washington the average ATFM delay is 5.5 minutes.
Heading to Houston: what to expect in this direction
Flying from Washington (IAD) to Houston (IAH) heads south-west for about 1,913 km, a flight time of roughly 2h 40m.
Departures from Washington on this leg cluster in the overnight window: about 39% of IAD-IAH flights take off then.
Air-traffic congestion: departing Washington the average ATFM delay is 5.5 min (atfm); arriving into Houston it is 5.5 min (atfm).
Across 1,060 tracked IAD-IAH flights, 84% left on time with an average delay of 10 min and a 0.8% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| United Airlines (UA) | 83% | 5 min | 1.3% |
Airlines operating IAD-IAH
Airports
Frequently asked questions about IAD-IAH
The flight from Washington (IAD) to Houston (IAH) takes 2h 40m on average. That is the median time recorded across 1 scheduled flight on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
On the Washington (IAD) -> Houston (IAH) route, on-time performance is 84% with an average delay of 10 minutes, based on 1060 tracked flights.
The cancellation rate on Washington-Houston is 0.85% across 1060 monitored flights.
The route is operated by 1 airline: 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.
