Flights Seattle → Denver
SEA → DEN
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 1810 flights monitored in recent months, 82% arrived on time (within 15 min of schedule), with an average delay of 10 minutes. The cancellation rate is 2.65%. FlightGuard's average computed risk is 23.4/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Denver the average ATFM delay is 2.0 minutes (main cause: atfm). Departing from Seattle the average ATFM delay is 2.0 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 29m.
Departures from Seattle on this leg cluster in the overnight window: about 42% of SEA-DEN flights take off then.
Air-traffic congestion: departing Seattle the average ATFM delay is 2.0 min (atfm); arriving into Denver it is 2.0 min (atfm).
Across 1,810 tracked SEA-DEN flights, 82% left on time with an average delay of 10 min and a 2.6% 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) | 74% | 10 min | 6.9% |
| American Airlines (AA) | 74% | 16 min | 3.0% |
| Frontier Airlines (F9) | 74% | 15 min | 2.2% |
| Southwest Airlines (WN) | 73% | 6 min | 3.1% |
| Alaska Airlines (AS) | 67% | 10 min | 11.9% |
Airlines operating SEA-DEN
Airports
Frequently asked questions about SEA-DEN
On the Seattle (SEA) -> Denver (DEN) route, on-time performance is 82% with an average delay of 10 minutes, based on 1810 tracked flights.
The cancellation rate on Seattle-Denver is 2.65% across 1810 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.
