Take off on cheap flights from Denver to Seattle, your adventure starts now!

Find cheap airline tickets from Denver to Seattle by date

  • any
  • September 2019
  • October 2019
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  • January 2020
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  • any
  • September 2019
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  • price
  • month of departure
  • month of return
$123
Frontier Airlines outward: Sep 27, 2019
6:51p DEN » 9:59p SEA
Frontier Airlines direct (3h08m)
Frontier Airlines inbound: Oct 1, 2019
3:20p SEA » 6:06p DEN
Frontier Airlines direct (2h46m)
$139
United Airlines outward: Oct 5, 2019
3:15a DEN » 6:16a SEA
United Airlines direct (3h01m)
United Airlines inbound: Oct 6, 2019
3:10p SEA » 5:47p DEN
United Airlines direct (2h37m)
$377
United Airlines outward: Dec 22, 2019
3:11a DEN » 6:18a SEA
United Airlines direct (3h07m)
Southwest Airlines inbound: Dec 28, 2019
5:00a SEA » 7:25a DEN
Southwest Airlines direct (2h25m)
Return
Departure
Find the cheapest Denver Seattle flight by browsing the dates below to find alternative flight prices found in the last days. To launch a flight search for Denver - Seattle with these new dates, click on an offer. Want to depart from another city? Choose:

Airlines operating flights from Denver to Seattle

  • any
  • September 2019
  • October 2019
  • November 2019
  • December 2019
  • January 2020
  • February 2020
  • March 2020
  • April 2020
  • May 2020
  • June 2020
  • July 2020
  • August 2020
  • all
  • Alaska Airlines
  • Frontier Airlines
Frontier Airlines
outbound: Oct 4, 2019
Frontier Airlines direct
return: Oct 6, 2019
Frontier Airlines direct
Alaska Airlines
outbound: Dec 21, 2019
Alaska Airlines direct
return: Dec 27, 2019
Alaska Airlines direct

Travel tips for flights Denver - Seattle

Average flight duration: 2h57m (direct flight)

  • Arrival city:
  • Seattle, USA
  • Airport(s):
  • Kenmore Air Harbor Seaplane Base (LKE)
  • Seattle–Tacoma International Airport (SEA)
  • Local time:
  • Sep 15, 2019 1:04 PM, GMT-7
  • Weather:
  • min. 53ºF, max. 65ºF
  • Departure city:
  • Denver, USA
  • Airport(s):
  • Centennial Airport (APA)
  • Rocky Mountain Metropolitan Airport (BJC)
  • Denver International Airport (DEN)
  • Local time:
  • Sep 15, 2019 2:04 PM, GMT-6
  • Weather:
  • min. 70ºF, max. 85ºF