Cheap Flights from Ontario International Airport to Seattle (SEA) Find and Compare the Best Airline Deals | Skyticket

Departure Date

2025/5
Sun	Mon	Tue	Wed	Thu	Fri	Sat
				1233	2338	3194
4Search	5200	6159	7199	8198	9168	10159
11Search	12168	13158	14158	15210	16168	17158
18Search	19198	20482	21194	22200	23199	24204
25204	26Search	27162	28199	29Search	30Search	31159

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Return Date

2025/5
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Total Fares（Round-Trip/Economy）: USD /Per Person

* Displayed fare(s) may differ from the actual search result

Ontario－Seattle-Tacoma Airport
May Lowest Airfares
USD158

The airfare displayed above is for Delta Air Lines

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Ontario－Seattle-Tacoma Airport
June Lowest Airfares
USD158

The airfare displayed above is for Delta Air Lines

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Ontario－Seattle-Tacoma Airport
July Lowest Airfares
USD305

The airfare displayed above is for Delta Air Lines

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Ontario－Seattle-Tacoma Airport
August Lowest Airfares
USD251

The airfare displayed above is for Delta Air Lines

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Ontario－Seattle-Tacoma Airport
September Lowest Airfares
USD251

The airfare displayed above is for Delta Air Lines

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Ontario－Seattle
Estimated Flight Time
2 Hours 36 Minutes
Ontario－Seattle
Number of Operating Airlines
5

Operating Airlines for Ontario－Seattle-Tacoma Airport Route
Non-StopAmerican Airlines

Non-StopAlaska Airlines

Delta Air Lines

Hawaiian Airlines

United Airlines

Other Destinations from:Ontario

Ontario－Boston(Logan)
USD257〜
Ontario－Washington D.C(Ronald Reagan Washington National)
USD240〜
Ontario－Washington D.C(Washington Dulles)
USD312〜
Ontario－Washington D.C(Baltimore-Washington)
USD319〜
Ontario－Chicago(O'Hare)
USD228〜
Ontario－Chicago(Midway)
USD254〜
Ontario－Dallas(/Fort Worth)
USD245〜
Ontario－Dallas(Love Field)
USD248〜
* Fares vary in accordance to seat availability
Other Departures to: Seattle

Philadelphia Airport－Seattle(-Tacoma)
USD308〜
Pensacola Airport－Seattle(-Tacoma)
USD371〜
Tri-Cities Airport－Seattle(-Tacoma)
USD139〜
* Fares vary in accordance to seat availability