$129 Cheap United flights Boston (BOS) to Seattle (SEA)

$129 Cheap United flights Boston (BOS) to Seattle (SEA)

Prices were available within the past 7 days and start at $129 for one-way flights and $264 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Sep 12 - Sat, Sep 20

BOS

Boston

SEA

Seattle

$264 Roundtrip, found 9 hours ago

$264

Roundtrip

found 9 hours ago

Select United flight, departing Fri, Sep 12 from Boston to Seattle, returning Sat, Sep 20, priced at $264 found 9 hours ago

Fri, Sep 12 - Sat, Sep 20

BOS

Boston

SEA

Seattle

$267 Roundtrip, found 9 hours ago

$267

Roundtrip

found 9 hours ago

Select United flight, departing Fri, Sep 12 from Boston to Seattle, returning Sat, Sep 20, priced at $267 found 9 hours ago

Thu, Jul 10 - Sun, Jul 13

BOS

Boston

SEA

Seattle

$288 Roundtrip, found 22 hours ago

$288

Roundtrip

found 22 hours ago

Select United flight, departing Thu, Jul 10 from Boston to Seattle, returning Sun, Jul 13, priced at $288 found 22 hours ago

Fri, Sep 12 - Sat, Sep 20

BOS

Boston

SEA

Seattle

$294 Roundtrip, found 9 hours ago

$294

Roundtrip

found 9 hours ago

Select United flight, departing Fri, Sep 12 from Boston to Seattle, returning Sat, Sep 20, priced at $294 found 9 hours ago

Fri, Sep 12 - Sat, Sep 20

BOS

Boston

SEA

Seattle

$296 Roundtrip, found 9 hours ago

$296

Roundtrip

found 9 hours ago

Select United flight, departing Fri, Sep 12 from Boston to Seattle, returning Sat, Sep 20, priced at $296 found 9 hours ago