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

Find cheap airline tickets from Ontario to Seattle by date

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  • May 2018
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  • month of departure
  • month of return
$207
outward: Jul 15, 2018
3:09a ONT » 5:40a SEA
Alaska Airlines direct (2h31m)
inbound: Jul 27, 2018
3:50p SEA » 6:18p ONT
Alaska Airlines direct (2h28m)
$241
outward: Jun 15, 2018
3:15p LAX » 2:20a SEA
Spirit Airlines 1 stop (11h05m)
inbound: Jun 19, 2018
12:15a SEA » 6:56a LAX
Spirit Airlines 1 stop (6h41m)
$247
outward: Jun 15, 2018
3:15p LAX » 2:20a SEA
Spirit Airlines 1 stop (11h05m)
inbound: Jun 19, 2018
12:15a SEA » 6:56a LAX
Spirit Airlines 1 stop (6h41m)
Return
Departure
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Airlines operating flights from Ontario to Seattle

  • any
  • May 2018
  • June 2018
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  • September 2018
  • October 2018
  • November 2018
  • December 2018
  • January 2019
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  • all
  • Alaska Airlines
Alaska Airlines
outbound: Jul 14, 2018
Alaska Airlines direct
return: Jul 27, 2018
Alaska Airlines direct

Travel tips for flights Ontario - Seattle

Average flight duration: 8h53m (flight with stopovers)

  • Arrival city:
  • Seattle, USA
  • Airport(s):
  • Kenmore Air Harbor Seaplane Base (LKE)
  • Seattle–Tacoma International Airport (SEA)
  • Local time:
  • May 24, 2018 10:03 PM, GMT-7
  • Weather:
  • min. 51ºF, max. 64ºF
  • Departure city:
  • Ontario, USA
  • Airport(s):
  • Ontario International Airport (ONT)
  • Local time:
  • May 24, 2018 10:03 PM, GMT-7
  • Weather:
  • min. 51ºF, max. 67ºF