Book United Seattle to Ontario flight deals from $174

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Search flights from Seattle to Ontario (SEA - ONT)

November

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Wednesday 14th

Return Thursday 29th
from$ 174*Viewed: 31 minutes ago

Tuesday 27th

Return Wednesday 12th
from$ 212*Viewed: 31 minutes ago

Wednesday 28th

Return Thursday 13th
from$ 174*Viewed: 31 minutes ago

December

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Saturday 1st

Return Sunday 16th
from$ 174*Viewed: 31 minutes ago

Monday 3rd

Return Tuesday 18th
from$ 250*Viewed: 31 minutes ago

Monday 31st

Return Tuesday 15th
from$ 242*Viewed: 31 minutes ago

January

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Friday 4th

Return Saturday 19th
from$ 174*Viewed: 31 minutes ago

Tuesday 8th

Return Wednesday 23rd
from$ 174*Viewed: 31 minutes ago

Wednesday 16th

Return Thursday 31st
from$ 212*Viewed: 31 minutes ago
*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Plan ahead for flights from Seattle to Ontario

from
to
Type
Dates
Price*
Seattle (SEA)
to Ontario (ONT)
Roundtrip
Depart Wed 14 Nov 2018
Return Thu 29 Nov 2018
from$ 174*Viewed: 31 minutes ago
Seattle (SEA)
to Ontario (ONT)
Roundtrip
Depart Wed 28 Nov 2018
Return Thu 13 Dec 2018
from$ 174*Viewed: 31 minutes ago
Seattle (SEA)
to Ontario (ONT)
Roundtrip
Depart Sat 1 Dec 2018
Return Sun 16 Dec 2018
from$ 174*Viewed: 31 minutes ago
Seattle (SEA)
to Ontario (ONT)
Roundtrip
Depart Fri 4 Jan 2019
Return Sat 19 Jan 2019
from$ 174*Viewed: 31 minutes ago
Seattle (SEA)
to Ontario (ONT)
Roundtrip
Depart Tue 8 Jan 2019
Return Wed 23 Jan 2019
from$ 174*Viewed: 31 minutes ago
Seattle (SEA)
to Ontario (ONT)
Roundtrip
Depart Wed 31 Oct 2018
Return Thu 15 Nov 2018
from$ 198*Viewed: 31 minutes ago
Seattle (SEA)
to Ontario (ONT)
Roundtrip
Depart Thu 15 Nov 2018
Return Fri 30 Nov 2018
from$ 212*Viewed: 31 minutes ago
Seattle (SEA)
to Ontario (ONT)
Roundtrip
Depart Sat 17 Nov 2018
Return Sun 2 Dec 2018
from$ 212*Viewed: 31 minutes ago
Seattle (SEA)
to Ontario (ONT)
Roundtrip
Depart Mon 19 Nov 2018
Return Tue 4 Dec 2018
from$ 212*Viewed: 31 minutes ago
Seattle (SEA)
to Ontario (ONT)
Roundtrip
Depart Tue 27 Nov 2018
Return Wed 12 Dec 2018
from$ 212*Viewed: 31 minutes ago
*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Weather in Ontario

75 °FTuesday10/23/2018
74 °FWednesday10/24/2018
75 °FThursday10/25/2018
75 °FFriday10/26/2018
76 °FSaturday10/27/2018
78 °FSunday10/28/2018
73 °FMonday10/29/2018
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