Direct flights from Seattle to Denver
All flights from SEA to DEN non-stop. There are direct flights from Seattle Tacoma International (SEA), Washington, USA to Denver International (DEN), Colorado, USA with United Airlines, Alaska Airlines and 4 other airlines. 121 weekly departures are currently scheduled on this route. Departure times range from 05:00 to 22:00 depending on the schedule period. The flight distance is 1028 miles (1654 km). Flight time ranges from 2 hours and 25 minutes to 3 hours and 3 minutes.
Seattle
, 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 Seattle to Denver 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 2026-10-12
Flight schedule from Seattle to Denver 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 2026-10-12
Flight schedule from Seattle to Denver 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 2026-10-12
Flight schedule from Seattle to Denver 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 2026-10-12
Flight schedule from Seattle to Denver 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 2026-10-12
Flight schedule from Seattle to Denver 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
Seattle to Denver scheduled departures
Select a date to see every published non-stop departure between SEA and DEN.
SEA - DEN route facts
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Distance1028 miles (1654 km)
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Flight time2 hours and 25 minutes to 3 hours and 3 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: Airbus A321neo, Boeing 737-900 Passenger, Boeing 737MAX 8 Passenger, Boeing 737-800 Passenger, Airbus A319, Boeing 737MAX 9 Passenger and Airbus A320Alaska Airlines: Boeing 737-900 (winglets) Passenger/BBJ3, Boeing 737MAX 9 Passenger, Boeing 737-800 (winglets) Passenger/BBJ2 and Boeing 737MAX 8 PassengerSouthwest Airlines: Boeing 737MAX 8 Passenger, Boeing 737-700 Passenger (Scimitar Winglets) and Boeing 737-800 (winglets) Passenger/BBJ2Delta Air Lines: Airbus A220-300 and Embraer 175 (Enhanced Winglets)Frontier Airlines: Airbus A321, Airbus A320neo, Airbus A320 and Airbus A321neoAmerican Airlines: Boeing 737MAX 8 Passenger
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