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

Find cheap airline tickets from Ontario to Seattle by date

  • any
  • September 2018
  • October 2018
  • November 2018
  • December 2018
  • January 2019
  • February 2019
  • March 2019
  • April 2019
  • May 2019
  • June 2019
  • July 2019
  • August 2019
  • any
  • September 2018
  • October 2018
  • November 2018
  • December 2018
  • January 2019
  • February 2019
  • March 2019
  • April 2019
  • May 2019
  • June 2019
  • July 2019
  • August 2019
  • price
  • month of departure
  • month of return
$155
outward: Oct 18, 2018
2:20a ONT » 4:58a SEA
Alaska Airlines direct (2h38m)
inbound: Oct 24, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$155
outward: Oct 18, 2018
2:20a ONT » 4:58a SEA
Alaska Airlines direct (2h38m)
inbound: Oct 24, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$155
outward: Oct 17, 2018
3:00p ONT » 5:45p SEA
Alaska Airlines direct (2h45m)
inbound: Oct 24, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$155
outward: Oct 17, 2018
3:00p ONT » 5:45p SEA
Alaska Airlines direct (2h45m)
inbound: Oct 24, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$155
outward: Oct 18, 2018
2:20a ONT » 4:58a SEA
Alaska Airlines direct (2h38m)
inbound: Oct 24, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$155
outward: Oct 18, 2018
2:20a ONT » 4:58a SEA
Alaska Airlines direct (2h38m)
inbound: Oct 24, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$156
outward: Oct 17, 2018
3:00p ONT » 5:45p SEA
Alaska Airlines direct (2h45m)
inbound: Oct 24, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$156
outward: Oct 17, 2018
3:00p ONT » 5:45p SEA
Alaska Airlines direct (2h45m)
inbound: Oct 24, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$156
outward: Oct 18, 2018
2:20a ONT » 4:58a SEA
Alaska Airlines direct (2h38m)
inbound: Oct 24, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$156
outward: Oct 17, 2018
8:00p LAX » 10:56p SEA
Alaska Airlines direct (2h56m)
inbound: Oct 24, 2018
4:30a SEA » 7:21a LAX
Alaska Airlines direct (2h51m)
$156
outward: Oct 18, 2018
2:20a ONT » 4:58a SEA
Alaska Airlines direct (2h38m)
inbound: Oct 24, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$156
outward: Oct 18, 2018
2:20a ONT » 4:58a SEA
Alaska Airlines direct (2h38m)
inbound: Oct 24, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$156
outward: Oct 17, 2018
7:00p LAX » 9:55p SEA
Alaska Airlines direct (2h55m)
inbound: Oct 24, 2018
6:30a SEA » 9:16a LAX
Alaska Airlines direct (2h46m)
$192
outward: Oct 5, 2018
9:05p LAX » 11:58p SEA
Alaska Airlines direct (2h53m)
inbound: Oct 14, 2018
2:00p SEA » 4:55p LAX
Alaska Airlines direct (2h55m)
$192
outward: Oct 5, 2018
4:00p LAX » 6:56p SEA
Alaska Airlines direct (2h56m)
inbound: Oct 16, 2018
1:05a SEA » 3:50a LAX
Alaska Airlines direct (2h45m)
$194
outward: Oct 5, 2018
3:00p ONT » 5:45p SEA
Alaska Airlines direct (2h45m)
inbound: Oct 16, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$194
outward: Oct 6, 2018
2:20a ONT » 4:58a SEA
Alaska Airlines direct (2h38m)
inbound: Oct 14, 2018
3:50p SEA » 6:27p ONT
Alaska Airlines direct (2h37m)
$195
outward: Oct 5, 2018
7:25p ONT » 10:06p SEA
Alaska Airlines direct (2h41m)
inbound: Oct 14, 2018
3:50p SEA » 6:27p ONT
Alaska Airlines direct (2h37m)
$195
outward: Oct 6, 2018
2:20a ONT » 4:58a SEA
Alaska Airlines direct (2h38m)
inbound: Oct 16, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$195
outward: Oct 6, 2018
2:20a ONT » 4:58a SEA
Alaska Airlines direct (2h38m)
inbound: Oct 14, 2018
3:50p SEA » 6:27p ONT
Alaska Airlines direct (2h37m)
$195
outward: Oct 6, 2018
2:20a ONT » 4:58a SEA
Alaska Airlines direct (2h38m)
inbound: Oct 16, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$195
outward: Oct 5, 2018
7:25p ONT » 10:06p SEA
Alaska Airlines direct (2h41m)
inbound: Oct 14, 2018
3:50p SEA » 6:27p ONT
Alaska Airlines direct (2h37m)
$195
outward: Oct 6, 2018
2:20a ONT » 4:58a SEA
Alaska Airlines direct (2h38m)
inbound: Oct 16, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$195
outward: Oct 5, 2018
3:00p ONT » 5:45p SEA
Alaska Airlines direct (2h45m)
inbound: Oct 16, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$195
outward: Oct 6, 2018
2:20a ONT » 4:58a SEA
Alaska Airlines direct (2h38m)
inbound: Oct 14, 2018
3:50p SEA » 6:27p ONT
Alaska Airlines direct (2h37m)
$195
outward: Oct 5, 2018
3:00p ONT » 5:45p SEA
Alaska Airlines direct (2h45m)
inbound: Oct 14, 2018
3:50p SEA » 6:27p ONT
Alaska Airlines direct (2h37m)
$195
outward: Oct 6, 2018
2:20a ONT » 4:58a SEA
Alaska Airlines direct (2h38m)
inbound: Oct 16, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$196
outward: Oct 5, 2018
3:00p ONT » 5:45p SEA
Alaska Airlines direct (2h45m)
inbound: Oct 16, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$196
outward: Oct 6, 2018
2:20a ONT » 4:58a SEA
Alaska Airlines direct (2h38m)
inbound: Oct 15, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
$196
outward: Oct 5, 2018
3:00p ONT » 5:45p SEA
Alaska Airlines direct (2h45m)
inbound: Oct 15, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
Return
Departure
Choose when you'd like to depart to Seattle (USA):
Find the cheapest Ontario Seattle flight by browsing the dates below to find alternative flight prices found in the last days. To launch a flight search for Ontario - Seattle with these new dates, click on an offer. Want to depart from another city? Choose: Las Vegas - Seattle New York - Seattle London - Seattle Miami - Seattle Chicago - Seattle San Francisco - Seattle See more routes

Airlines operating flights from Ontario to Seattle

  • any
  • September 2018
  • October 2018
  • November 2018
  • December 2018
  • January 2019
  • February 2019
  • March 2019
  • April 2019
  • May 2019
  • June 2019
  • July 2019
  • August 2019
  • all
  • Alaska Airlines
  • Delta Air Lines
  • Frontier Airlines
  • United Airlines
Frontier Airlines
outbound: Oct 16, 2018
Frontier Airlines 1 stop
return: Oct 23, 2018
Frontier Airlines 1 stop
Alaska Airlines
outbound: Nov 5, 2018
Alaska Airlines direct
return: Nov 10, 2018
Alaska Airlines direct
United Airlines
outbound: Oct 29, 2018
United Airlines 1 stop
return: Nov 4, 2018
Delta Air Lines 1 stop
Delta Air Lines
outbound: Nov 5, 2018
Delta Air Lines 1 stop
return: Nov 10, 2018
Delta Air Lines 1 stop

Travel tips for flights Ontario - Seattle

Average flight duration: 2h43m (direct flight)

  • Arrival city:
  • Seattle, USA
  • Airport(s):
  • Kenmore Air Harbor Seaplane Base (LKE)
  • Seattle–Tacoma International Airport (SEA)
  • Local time:
  • Sep 22, 2018 4:09 AM, GMT-7
  • Weather:
  • min. 52ºF, max. 62ºF
  • Departure city:
  • Ontario, USA
  • Airport(s):
  • Ontario International Airport (ONT)
  • Local time:
  • Sep 22, 2018 4:09 AM, GMT-7
  • Weather:
  • min. 63ºF, max. 90ºF