Direct flights from Denver to Seattle
All flights from DEN to SEA non-stop. There are direct flights from Denver International (DEN), Colorado, USA to Seattle Tacoma International (SEA), Washington, USA with United Airlines, Alaska Airlines and 4 other airlines. 129 weekly departures are currently scheduled on this route. Departure times range from 00:25 to 22:45 depending on the schedule period. The flight distance is 1028 miles (1654 km). Flight time ranges from 2 hours and 50 minutes to 3 hours and 25 minutes.
Denver
, USA
Airlines with non-stop routes:
United Airlines
Alaska Airlines
Southwest Airlines
Delta Air Lines
Frontier Airlines
American Airlines
Sun Country Airlines
Flight schedule from Denver to Seattle with United Airlines
This is a weekly direct flight schedule for United Airlines. Use the arrows or click on the date to change week. Click on any flight departure time to show more information and check availability.
Flight
The timetable & schedule information was updated at 2026-09-28
Flight schedule from Denver to Seattle with Alaska Airlines
This is a weekly direct flight schedule for Alaska Airlines. Use the arrows or click on the date to change week. Click on any flight departure time to show more information and check availability.
Flight
The timetable & schedule information was updated at 2026-09-28
Flight schedule from Denver to Seattle with Southwest Airlines
This is a weekly direct flight schedule for Southwest Airlines. Use the arrows or click on the date to change week. Click on any flight departure time to show more information and check availability.
Flight
The timetable & schedule information was updated at 2026-09-28
Flight schedule from Denver to Seattle with Delta Air Lines
This is a weekly direct flight schedule for Delta Air Lines. Use the arrows or click on the date to change week. Click on any flight departure time to show more information and check availability.
Flight
The timetable & schedule information was updated at 2026-09-28
Flight schedule from Denver to Seattle with Frontier Airlines
This is a weekly direct flight schedule for Frontier Airlines. Use the arrows or click on the date to change week. Click on any flight departure time to show more information and check availability.
Flight
The timetable & schedule information was updated at 2026-09-28
Flight schedule from Denver to Seattle with American Airlines
This is a weekly direct flight schedule for American Airlines. Use the arrows or click on the date to change week. Click on any flight departure time to show more information and check availability.
Flight
The timetable & schedule information was updated at
Denver to Seattle scheduled departures
Select a date to see every published non-stop departure between DEN and SEA.
DEN - SEA route facts
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Distance1028 miles (1654 km)
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Flight time2 hours and 50 minutes to 3 hours and 25 minutes
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Airlines United Alaska Airlines Southwest Delta Frontier American Airlines
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Airline alliancesStar Alliance oneworld Low-cost carrier SkyTeam
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CabinsEconomy Premium Economy Business First
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Hub airportsUnited Airlines: DENAlaska Airlines: SEA (Primary hub.)Delta Air Lines: SEA
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AircraftUnited Airlines: Boeing 737-900 Passenger, Boeing 737MAX 8 Passenger, Boeing 737-800 Passenger, Airbus A319, Boeing 737MAX 9 Passenger and Airbus A321neoAlaska Airlines: Boeing 737-900 (winglets) Passenger/BBJ3, Boeing 737MAX 9 Passenger, Boeing 737-800 (winglets) Passenger/BBJ2 and Boeing 737MAX 8 PassengerSouthwest Airlines: Boeing 737-700 Passenger (Scimitar Winglets) , Boeing 737MAX 8 Passenger and Boeing 737-800 (winglets) Passenger/BBJ2Delta Air Lines: Airbus A220-300 and Embraer 175 (Enhanced Winglets)Frontier Airlines: Airbus A321neo, Airbus A321, Airbus A320 and Airbus A320neoAmerican Airlines: Boeing 737-800 Passenger
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