$89 Cheap United flights Ontario (ONT) to Seattle (SEA)

$89 Cheap United flights Ontario (ONT) to Seattle (SEA)

Prices were available within the past 7 days and start at $89 for one-way flights and $177 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Sep 12 - Thu, Sep 18

ONT

Ontario

SEA

Seattle

$177 Roundtrip, found 3 days ago

$177

Roundtrip

found 3 days ago

Select United flight, departing Fri, Sep 12 from Ontario to Seattle, returning Thu, Sep 18, priced at $177 found 3 days ago

Fri, Sep 12 - Thu, Sep 18

ONT

Ontario

SEA

Seattle

$196 Roundtrip, found 3 days ago

$196

Roundtrip

found 3 days ago

Select United flight, departing Fri, Sep 12 from Ontario to Seattle, returning Thu, Sep 18, priced at $196 found 3 days ago

Fri, Sep 12 - Thu, Sep 18

ONT

Ontario

SEA

Seattle

$201 Roundtrip, found 3 days ago

$201

Roundtrip

found 3 days ago

Select United flight, departing Fri, Sep 12 from Ontario to Seattle, returning Thu, Sep 18, priced at $201 found 3 days ago

Wed, Aug 6 - Wed, Aug 13

ONT

Ontario

SEA

Seattle

$223 Roundtrip, found 23 hours ago

$223

Roundtrip

found 23 hours ago

Select United flight, departing Wed, Aug 6 from Ontario to Seattle, returning Wed, Aug 13, priced at $223 found 23 hours ago

Fri, Sep 12 - Thu, Sep 18

ONT

Ontario

SEA

Seattle

$224 Roundtrip, found 3 days ago

$224

Roundtrip

found 3 days ago

Select United flight, departing Fri, Sep 12 from Ontario to Seattle, returning Thu, Sep 18, priced at $224 found 3 days ago