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

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

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.

Tue, Sep 9 - Sat, Sep 20

SEA

Seattle

ONT

Ontario

$177 Roundtrip, found 5 days ago

$177

Roundtrip

found 5 days ago

Select United flight, departing Tue, Sep 9 from Seattle to Ontario, returning Sat, Sep 20, priced at $177 found 5 days ago

Tue, Sep 9 - Sat, Sep 20

SEA

Seattle

ONT

Ontario

$187 Roundtrip, found 5 days ago

$187

Roundtrip

found 5 days ago

Select United flight, departing Tue, Sep 9 from Seattle to Ontario, returning Sat, Sep 20, priced at $187 found 5 days ago

Tue, Sep 9 - Sat, Sep 20

SEA

Seattle

ONT

Ontario

$189 Roundtrip, found 5 days ago

$189

Roundtrip

found 5 days ago

Select United flight, departing Tue, Sep 9 from Seattle to Ontario, returning Sat, Sep 20, priced at $189 found 5 days ago