Search flights from Denver (DEN) to Seattle (SEA)

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Cheapest flights to Seattle

The cheapest flights available in the next 60 days – prices are updated regularly

Flying from Denver to Seattle: things to know

The most popular route is from Denver International Airport in Denver to Sea-Tac Airport in Seattle. On average this flight takes 3 hours 4 minutes one way and costs US$420 for the round trip.

Most popular route
Denver International Airport (DEN) to Sea-Tac Airport (SEA)
Average flight time
3 hours 4 minutes
Average round-trip price
US$420
Fly from Denver to Seattle
8 airlines

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Airlines that fly from Denver to Seattle

Airline options may vary according to recently booked flights and your search terms

  • Frontier Airlines
  • Alaska Airlines
  • United Airlines
  • Hawaiian Airlines
  • Southwest Airlines
  • Spirit Airlines
  • Sun Country
  • American Airlines

Frequently asked questions

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Flights to Sea-Tac Airport

Jet into this airport to explore Seattle at your leisure.

Flights to Snohomish County Airport

Jet into this airport to explore Seattle at your leisure.

Flights to Washington State

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Hotels in Seattle

A popular choice with visitors to the United States.