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

Find cheap airline tickets from Seattle to Ontario 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
$165
outward: Nov 7, 2018
6:16a SEA » 8:56a ONT
Alaska Airlines direct (2h40m)
inbound: Nov 10, 2018
6:30p ONT » 9:11p SEA
Alaska Airlines direct (2h41m)
$176
outward: Oct 24, 2018
4:40a SEA » 7:20a ONT
Alaska Airlines direct (2h40m)
inbound: Oct 26, 2018
7:25p ONT » 10:06p SEA
Alaska Airlines direct (2h41m)
$176
outward: Nov 7, 2018
6:16a SEA » 8:56a ONT
Alaska Airlines direct (2h40m)
inbound: Nov 10, 2018
6:30p ONT » 9:11p SEA
Alaska Airlines direct (2h41m)
$313
outward: Dec 18, 2018
3:20a SEA » 8:28a ONT
Delta Air Lines 1 stop (5h08m)
inbound: Dec 28, 2018
3:25a ONT » 8:30a SEA
Delta Air Lines 1 stop (5h05m)
$334
outward: Dec 25, 2018
3:35a SEA » 8:57a ONT
United Airlines 1 stop (5h22m)
inbound: Dec 28, 2018
3:00p ONT » 8:33p SEA
United Airlines 1 stop (5h33m)
$353
outward: Dec 18, 2018
3:20a SEA » 8:28a ONT
Delta Air Lines 1 stop (5h08m)
inbound: Dec 28, 2018
3:25a ONT » 8:30a SEA
Delta Air Lines 1 stop (5h05m)
Return
Departure
Choose when you'd like to depart to Ontario (USA):
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Airlines operating flights from Seattle to Ontario

  • 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
  • American Airlines
  • Delta Air Lines
  • Frontier Airlines
  • United Airlines
Frontier Airlines
outbound: Dec 6, 2018
Frontier Airlines 1 stop
return: Dec 12, 2018
Frontier Airlines 1 stop
Alaska Airlines
outbound: Nov 6, 2018
Alaska Airlines direct
return: Nov 10, 2018
Alaska Airlines direct
Delta Air Lines
outbound: Nov 6, 2018
Delta Air Lines 1 stop
return: Nov 10, 2018
Delta Air Lines 1 stop
American Airlines
outbound: Nov 6, 2018
American Airlines 1 stop
return: Nov 10, 2018
American Airlines direct
United Airlines
outbound: Dec 24, 2018
United Airlines 1 stop
return: Dec 28, 2018
United Airlines 1 stop

Travel tips for flights Seattle - Ontario

Average flight duration: 2h40m (direct flight)

  • Arrival city:
  • Ontario, USA
  • Airport(s):
  • Ontario International Airport (ONT)
  • Local time:
  • Sep 18, 2018 5:48 PM, GMT-7
  • Weather:
  • min. 62ºF, max. 86ºF
  • Departure city:
  • Seattle, USA
  • Airport(s):
  • Kenmore Air Harbor Seaplane Base (LKE)
  • Seattle–Tacoma International Airport (SEA)
  • Local time:
  • Sep 18, 2018 5:48 PM, GMT-7
  • Weather:
  • min. 53ºF, max. 62ºF