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Seattle ✈ Ontario

Cheapest airfares from Seattle to Ontario

Search for flight deals to Ontario

*All prices in AUD, prices may fluctuate slightly from the advertised price.
Fly on Sat, Apr 26th 2025
From $113

Frontier Airlines
F9 3163 (Direct)
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Fly on Tue, Jun 17th 2025
From $189

Alaska Airlines
AS 1254 (Direct)
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