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

Find cheap airline tickets from Denver to Seattle by date

  • any
  • June 2021
  • July 2021
  • August 2021
  • September 2021
  • October 2021
  • November 2021
  • December 2021
  • January 2022
  • February 2022
  • March 2022
  • April 2022
  • May 2022
  • any
  • June 2021
  • July 2021
  • August 2021
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  • price
  • month of departure
  • month of return
$109
Frontier Airlines outward: Sep 14, 2021
10:45p DEN » 1:44a SEA
Frontier Airlines direct (2h59m)
Frontier Airlines inbound: Sep 22, 2021
3:14p SEA » 5:58p DEN
Frontier Airlines direct (2h44m)
$109
Frontier Airlines outward: Sep 14, 2021
10:45p DEN » 1:44a SEA
Frontier Airlines direct (2h59m)
Frontier Airlines inbound: Sep 22, 2021
3:14p SEA » 5:58p DEN
Frontier Airlines direct (2h44m)
$110
Frontier Airlines outward: Sep 14, 2021
10:45p DEN » 1:44a SEA
Frontier Airlines direct (2h59m)
Frontier Airlines inbound: Sep 22, 2021
3:14p SEA » 5:58p DEN
Frontier Airlines direct (2h44m)
$110
Frontier Airlines outward: Sep 14, 2021
10:45p DEN » 1:44a SEA
Frontier Airlines direct (2h59m)
Frontier Airlines inbound: Sep 22, 2021
3:14p SEA » 5:58p DEN
Frontier Airlines direct (2h44m)
$120
Frontier Airlines outward: Sep 14, 2021
10:45p DEN » 1:44a SEA
Frontier Airlines direct (2h59m)
Frontier Airlines inbound: Sep 22, 2021
3:14p SEA » 5:58p DEN
Frontier Airlines direct (2h44m)
$120
Frontier Airlines outward: Sep 14, 2021
10:45p DEN » 1:44a SEA
Frontier Airlines direct (2h59m)
Frontier Airlines inbound: Sep 22, 2021
3:14p SEA » 5:58p DEN
Frontier Airlines direct (2h44m)
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
  • June 2021
  • July 2021
  • August 2021
  • September 2021
  • October 2021
  • November 2021
  • December 2021
  • January 2022
  • February 2022
  • March 2022
  • April 2022
  • May 2022
  • all
  • Alaska Airlines
  • Frontier Airlines
  • United Airlines
Frontier Airlines
outbound: Sep 14, 2021
Frontier Airlines direct
return: Sep 22, 2021
Frontier Airlines direct
United Airlines
outbound: Sep 14, 2021
United Airlines direct
return: Sep 22, 2021
United Airlines direct
Alaska Airlines
outbound: Sep 14, 2021
Alaska Airlines direct
return: Sep 22, 2021
Alaska Airlines direct

Travel tips for flights Denver - Seattle

Average flight duration: 2h51m (direct flight)

  • Arrival city:
  • Seattle, USA
  • Airport(s):
  • Kenmore Air Harbor Seaplane Base (LKE)
  • Seattle–Tacoma International Airport (SEA)
  • Local time:
  • Jun 18, 2021 7:06 AM, GMT-7
  • Weather:
  • min. 50ºF, max. 75ºF
  • Departure city:
  • Denver, USA
  • Airport(s):
  • Centennial Airport (APA)
  • Rocky Mountain Metropolitan Airport (BJC)
  • Denver International Airport (DEN)
  • Local time:
  • Jun 18, 2021 8:06 AM, GMT-6
  • Weather:
  • min. 63ºF, max. 87ºF