$129 Cheap Alaska Airlines flights Seattle (SEA) to Ontario (ONT)

$129 Cheap Alaska Airlines flights Seattle (SEA) to Ontario (ONT)

Prices were available within the past 7 days and start at $129 for one-way flights and $268 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Dec 31 - Sun, Jan 4

SEA

Seattle

ONT

Ontario

$268 Roundtrip, found 5 days ago

$268

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Wed, Dec 31 from Seattle to Ontario, returning Sun, Jan 4, priced at $268 found 5 days ago

Thu, Apr 16 - Sun, Apr 19

SEA

Seattle

ONT

Ontario

$307 Roundtrip, found 1 day ago

$307

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Thu, Apr 16 from Seattle to Ontario, returning Sun, Apr 19, priced at $307 found 1 day ago

Mon, Dec 29 - Thu, Jan 1

SEA

Seattle

ONT

Ontario

$327 Roundtrip, found 5 days ago

$327

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Mon, Dec 29 from Seattle to Ontario, returning Thu, Jan 1, priced at $327 found 5 days ago

Thu, Apr 16 - Sun, Apr 19

SEA

Seattle

ONT

Ontario

$377 Roundtrip, found 1 day ago

$377

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Thu, Apr 16 from Seattle to Ontario, returning Sun, Apr 19, priced at $377 found 1 day ago

Thu, Apr 16 - Sun, Apr 19

SEA

Seattle

ONT

Ontario

$447 Roundtrip, found 1 day ago

$447

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Thu, Apr 16 from Seattle to Ontario, returning Sun, Apr 19, priced at $447 found 1 day ago