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

Find cheap airline tickets from St Louis to Seattle by date

  • any
  • July 2018
  • August 2018
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  • October 2018
  • November 2018
  • December 2018
  • January 2019
  • February 2019
  • March 2019
  • April 2019
  • May 2019
  • June 2019
  • any
  • July 2018
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  • price
  • month of departure
  • month of return
$234
outward: Aug 25, 2018
4:38p STL » 9:05a SEA
Frontier Airlines 1 stop (16h27m)
inbound: Sep 1, 2018
9:55a SEA » 10:10p STL
Frontier Airlines 1 stop (12h15m)
$293
outward: Aug 13, 2018
4:38p STL » 3:32a SEA
Frontier Airlines 1 stop (10h54m)
inbound: Aug 17, 2018
9:55a SEA » 10:10p STL
Frontier Airlines 1 stop (12h15m)
$311
outward: Aug 15, 2018
4:38p STL » 9:05a SEA
Frontier Airlines 1 stop (16h27m)
inbound: Aug 19, 2018
9:55a SEA » 10:10p STL
Frontier Airlines 1 stop (12h15m)
$311
outward: Aug 15, 2018
4:38p STL » 9:05a SEA
Frontier Airlines 1 stop (16h27m)
inbound: Aug 19, 2018
9:55a SEA » 10:10p STL
Frontier Airlines 1 stop (12h15m)
$346
outward: Jul 24, 2018
12:59a STL » 11:11p SEA
Unknown Company 1 stop (22h12m)
inbound: Aug 7, 2018
5:12a SEA » 12:28p STL
Unknown Company 1 stop (7h16m)
$374
outward: Dec 26, 2018
1:30a STL » 9:25a SEA
United Airlines 1 stop (7h55m)
inbound: Jan 1, 2019
9:15a SEA » 5:19p STL
United Airlines 1 stop (8h04m)
$492
outward: Jul 19, 2018
12:59a STL » 10:24a SEA
Unknown Company 1 stop (9h25m)
inbound: Jul 29, 2018
5:12a SEA » 12:28p STL
Unknown Company 1 stop (7h16m)
Return
Departure
Choose when you'd like to depart to Seattle (USA):
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Airlines operating flights from St Louis to Seattle

  • any
  • July 2018
  • August 2018
  • September 2018
  • October 2018
  • November 2018
  • December 2018
  • January 2019
  • February 2019
  • March 2019
  • April 2019
  • May 2019
  • June 2019
  • all
  • Alaska Airlines
  • Frontier Airlines
Frontier Airlines
outbound: Aug 25, 2018
Frontier Airlines 1 stop
return: Sep 1, 2018
Frontier Airlines 1 stop
Alaska Airlines
outbound: Aug 13, 2018
Alaska Airlines direct
return: Aug 17, 2018
Alaska Airlines direct

Travel tips for flights St Louis - Seattle

Average flight duration: 8h20m (flight with stopovers)

  • Arrival city:
  • Seattle, USA
  • Airport(s):
  • Kenmore Air Harbor Seaplane Base (LKE)
  • Seattle–Tacoma International Airport (SEA)
  • Local time:
  • Jul 17, 2018 4:58 AM, GMT-7
  • Weather:
  • min. 59ºF, max. 80ºF
  • Departure city:
  • St Louis, USA
  • Airport(s):
  • St. Louis Downtown Airport (CPS)
  • Lambert–St. Louis International Airport (STL)
  • MidAmerica St. Louis Airport (BLV)
  • Spirit of St. Louis Airport (SUS)
  • Local time:
  • Jul 17, 2018 6:58 AM, GMT-5
  • Weather:
  • min. 76ºF, max. 81ºF