$109 Cheap Alaska Airlines flights Seattle (SEA) to Ontario (ONT)

$109 Cheap Alaska Airlines flights Seattle (SEA) to Ontario (ONT)

Prices were available within the past 7 days and start at $109 for one-way flights and $177 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Nov 18 - Sat, Nov 22

SEA

Seattle

ONT

Ontario

$177 Roundtrip, found 4 days ago

$177

Roundtrip

found 4 days ago

Select Alaska Airlines flight, departing Tue, Nov 18 from Seattle to Ontario, returning Sat, Nov 22, priced at $177 found 4 days ago

Fri, Nov 21 - Thu, Nov 27

SEA

Seattle

ONT

Ontario

$207 Roundtrip, found 4 days ago

$207

Roundtrip

found 4 days ago

Select Alaska Airlines flight, departing Fri, Nov 21 from Seattle to Ontario, returning Thu, Nov 27, priced at $207 found 4 days ago

Tue, Sep 30 - Sat, Oct 4

SEA

Seattle

ONT

Ontario

$217 Roundtrip, found 4 hours ago

$217

Roundtrip

found 4 hours ago

Select Alaska Airlines flight, departing Tue, Sep 30 from Seattle to Ontario, returning Sat, Oct 4, priced at $217 found 4 hours ago

Tue, Sep 30 - Sat, Oct 4

SEA

Seattle

ONT

Ontario

$217 Roundtrip, found 4 hours ago

$217

Roundtrip

found 4 hours ago

Select Alaska Airlines flight, departing Tue, Sep 30 from Seattle to Ontario, returning Sat, Oct 4, priced at $217 found 4 hours ago

Tue, Sep 30 - Sat, Oct 4

SEA

Seattle

ONT

Ontario

$222 Roundtrip, found 4 hours ago

$222

Roundtrip

found 4 hours ago

Select Alaska Airlines flight, departing Tue, Sep 30 from Seattle to Ontario, returning Sat, Oct 4, priced at $222 found 4 hours ago

Tue, Sep 30 - Sat, Oct 4

SEA

Seattle

ONT

Ontario

$227 Roundtrip, found 4 hours ago

$227

Roundtrip

found 4 hours ago

Select Alaska Airlines flight, departing Tue, Sep 30 from Seattle to Ontario, returning Sat, Oct 4, priced at $227 found 4 hours ago