Flights Seattle → Denver
SEA → DEN
How long is the flight from Seattle to Denver?
The flight from Seattle (SEA) to Denver (DEN) takes 2h 21m on average. That is the median time recorded across 4 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 Seattle to Denver operates with a high on-time performance rate of 83%, with an average delay of just 9.2 minutes per flight. Over the past year, this route has seen 1328 flights using various aircraft models including Boeing 737 series and Airbus A320 family planes. The destination airport in Denver, which opened in 1989, handles a significant number of passengers annually, totaling 82,358,744.
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 Seattle (SEA) → Denver (DEN) route is operated by American Airlines, Alaska Airlines, Frontier Airlines, United Airlines, Southwest Airlines. Across 3788 flights monitored in recent months, 78% arrived on time (within 15 min of schedule), with an average delay of 12 minutes. The cancellation rate is 1.53%. FlightGuard's average computed risk is 23.7/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Denver the average ATFM delay is 5.5 minutes (main cause: atfm). Departing from Seattle the average ATFM delay is 5.5 minutes.
Heading to Denver: what to expect in this direction
Flying from Seattle (SEA) to Denver (DEN) heads south-east for about 1,645 km, a flight time of roughly 2h 21m.
Departures from Seattle on this leg cluster in the overnight window: about 38% of SEA-DEN flights take off then.
Air-traffic congestion: departing Seattle the average ATFM delay is 5.5 min (atfm); arriving into Denver it is 5.5 min (atfm).
Across 3,788 tracked SEA-DEN flights, 78% left on time with an average delay of 12 min and a 1.5% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Alaska Airlines (AS) | 85% | -1 min | 0.5% |
| United Airlines (UA) | 83% | 5 min | 1.3% |
| American Airlines (AA) | 79% | 6 min | 1.1% |
| Southwest Airlines (WN) | 75% | 5 min | 0.3% |
| Frontier Airlines (F9) | 74% | 11 min | 1.3% |
Airlines operating SEA-DEN
Airports
Frequently asked questions about SEA-DEN
The flight from Seattle (SEA) to Denver (DEN) takes 2h 21m on average. That is the median time recorded across 4 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
On the Seattle (SEA) -> Denver (DEN) route, on-time performance is 78% with an average delay of 12 minutes, based on 3788 tracked flights.
The cancellation rate on Seattle-Denver is 1.53% across 3788 monitored flights.
The route is operated by 5 airlines: American Airlines, Alaska Airlines, Frontier Airlines, United Airlines, Southwest Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at Denver, 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.
