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From Seattle
Current:
Seattle to Ontario
Seattle ✈ Ontario
Cheapest airfares from Seattle to Ontario
Search for flight deals to Ontario
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All prices in AUD, prices may fluctuate slightly from the advertised price.
Fly on Wed, Mar 25th 2026
From
$96
Southwest Airlines
WN 2868 (1 Transfer)
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Fly on Tue, Apr 14th 2026
From
$123
Hawaiian Airlines
HA 6836 (Direct)
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Fly on Wed, May 13th 2026
From
$141
Southwest Airlines
WN 4195 (1 Transfer)
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Fly on Mon, Jun 22nd 2026
From
$195
Frontier Airlines
F9 2276 (Direct)
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Fly on Mon, Aug 31st 2026
From
$254
Alaska Airlines
AS 1465 (Direct)
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Fly on Fri, Jul 24th 2026
From
$260
Alaska Airlines
AS 565 (Direct)
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