Cheap Flights from Ontario to Seattle
Cheap Flights from Ontario to Seattle
Looking for cheap flights from Ontario to Seattle? PointsYeah scans award availability across major airline and bank transfer programs in one place, so travelers can compare the lowest points and cash routes faster. Instead of searching each airline separately, users can see pricing from programs like Chase, Amex, Capital One, Citi, and Bilt side by side.
Award prices from Ontario to Seattle vary by season, cabin, and date, but available award flights can start around 10,000 points one way, with premium cabins available at higher mileage levels. The live search above allows filtering by cabin, airline, stops, or maximum points to find the best award flights from Ontario to Seattle for specific travel dates.
2026-11-24
ONT - SEA
Economy | Non stop | 9+ left
From 10,000 Pts + $5.6
2026-11-25
ONT - SEA
Economy | Non stop | 9+ left
From 10,000 Pts + $5.6
2026-12-02
ONT - SEA
Economy | Non stop | 9+ left
From 10,000 Pts + $5.6
2026-12-05
ONT - SEA
Economy | Non stop | 6 left
From 10,000 Pts + $5.6
2026-12-08
ONT - SEA
Economy | Non stop | 9+ left
From 10,000 Pts + $5.6
2026-12-09
ONT - SEA
Economy | Non stop | 9+ left
From 10,000 Pts + $5.6
Ontario to Seattle flight facts
Distance
957 mi
1,540 km in a straight line
Estimated flight time
about 2h 30m
In the air, for the straight-line distance
Time difference
Same time zone
Seattle is in the same time zone as Ontario.
Airports in Ontario
ONT · Ontario Intl
Airports in Seattle
SEA · Seattle Tacoma Intl
Nearby airport alternatives
Flights Santa Ana - Seattle · Santa Ana is 30 mi from Ontario
Flights Long Beach - Seattle · Long Beach is 36 mi from Ontario
Flights Burbank - Seattle · Burbank is 44 mi from Ontario
Flights Los Angeles - Seattle · Los Angeles is 47 mi from Ontario
Flights Palm Springs - Seattle · Palm Springs is 65 mi from Ontario
Flights San Diego - Seattle · San Diego is 94 mi from Ontario
Premium cabin flights from Ontario to Seattle
Premium cabin
2026-11-06
ONT - SEA
First | 1 Stop | 3 left
From 21,500 Pts + $5.6
Premium cabin
2026-11-05
ONT - SEA
First | Non stop | 8 left
From 25,000 Pts + $5.6
Premium cabin
2026-11-06
ONT - SEA
First | Non stop | 9+ left
From 25,000 Pts + $5.6
Premium cabin
2026-11-07
ONT - SEA
First | Non stop | 1 left
From 25,000 Pts + $5.6
Premium cabin
2026-11-09
ONT - SEA
First | 1 Stop
From 26,000 Pts + $11.2
Premium cabin
2026-11-09
ONT - SEA
First | Non stop | 2 left
From 30,000 Pts + $5.6
Selected hotels for your next stay
Seattle (United States)
Thompson Seattle
From 15,000 Pts or $203
Seattle (United States)
Hotel 1000
From 20,000 Pts or $270
Seattle, WA (USA)
Astra Hotel, Seattle, a Tribute Portfolio Hotel
From Pts or $88
Frequently Asked Questions
The cheapest route from Ontario to Seattle depends on award space, transfer bonuses, and travel dates. PointsYeah compares bank and airline programs in one place so you can find the best points and cash combinations faster.
Yes. Transferable points from Chase, Amex, Capital One, Citi, and Bilt can often be moved to airline partners for flights from Ontario to Seattle.
Yes. Searching metro codes when available helps compare nearby airport combinations for flights from Ontario to Seattle.
Ontario and Seattle are about 957 miles (1,540 km) apart in a straight line.
Flying the 957-mile straight-line distance takes about 2h 30m in the air, estimated from typical cruising speed. Actual travel time depends on the routing; itineraries with connections take longer.
Seattle is in the same time zone as Ontario.
Departures from Ontario: Ontario Intl (ONT). Arrivals in Seattle: Seattle Tacoma Intl (SEA).
Travelers searching this route also look at other popular routes into Seattle, plus the return trip when we track it. Fares and award space change daily.
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points travel planning experience. Yeah!
