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

Click this link for Seattle Denver flights

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
  • September 2021
  • October 2021
  • November 2021
  • December 2021
  • January 2022
  • February 2022
  • March 2022
  • April 2022
  • May 2022
  • 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)
Verify
16 days ago
$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)
Verify
20 days ago
$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)
Verify
20 days ago
$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)
Verify
21 days ago
$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)
Verify
16 days ago
$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)
Verify
16 days ago
Return
Departure
Availability of fares is not guaranteed for offers found in the last 7 days.
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
$124 Verify
16 days ago
United Airlines
outbound: Sep 14, 2021
United Airlines direct
return: Sep 22, 2021
United Airlines direct
$161 Verify
16 days ago
Alaska Airlines
outbound: Sep 14, 2021
Alaska Airlines direct
return: Sep 22, 2021
Alaska Airlines direct
$172 Verify
16 days ago
Airline tickets Denver - Seattle found in the last 30 days.

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
Find a cheap rental car in Seattle