Flights Denver → Houston
DEN → IAH
How long is the flight from Denver to Houston?
The flight from Denver (DEN) to Houston (IAH) takes 1h 48m on average. That is the median time recorded across 5 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 Denver to Houston has an on-time performance rate of 85%, with the average delay being 9.3 minutes. Over a period, there have been 1113 flights on this route using various aircraft models including Airbus A319 and Boeing 737-800. The destination airport in Houston handles over 40 million passengers annually.
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 Denver (DEN) → Houston (IAH) route is operated by Frontier Airlines, Spirit Airlines, United Airlines. Across 2894 flights monitored in recent months, 80% arrived on time (within 15 min of schedule), with an average delay of 13 minutes. The cancellation rate is 1.11%. FlightGuard's average computed risk is 22.8/100 (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 Denver the average ATFM delay is 5.5 minutes.
Heading to Houston: what to expect in this direction
Flying from Denver (DEN) to Houston (IAH) heads south-east for about 1,387 km, a flight time of roughly 1h 48m.
Departures from Denver on this leg cluster in the overnight window: about 37% of DEN-IAH flights take off then.
Air-traffic congestion: departing Denver the average ATFM delay is 5.5 min (atfm); arriving into Houston it is 5.5 min (atfm).
Across 2,894 tracked DEN-IAH flights, 80% left on time with an average delay of 13 min and a 1.1% 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% |
| Frontier Airlines (F9) | 74% | 11 min | 1.3% |
| Spirit Airlines (NK) | 66% | 19 min | 3.4% |
Airlines operating DEN-IAH
Airports
Frequently asked questions about DEN-IAH
The flight from Denver (DEN) to Houston (IAH) takes 1h 48m on average. That is the median time recorded across 5 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
On the Denver (DEN) -> Houston (IAH) route, on-time performance is 80% with an average delay of 13 minutes, based on 2894 tracked flights.
The cancellation rate on Denver-Houston is 1.11% across 2894 monitored flights.
The route is operated by 3 airlines: Frontier Airlines, Spirit Airlines, 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.
