$478 Cheap United flights Seattle (SEA) to London (LHR)

$478 Cheap United flights Seattle (SEA) to London (LHR)

Prices were available within the past 7 days and start at $478 for one-way flights and $905 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Sep 1 - Fri, Sep 11

SEA

Seattle

LHR

London

$905 Roundtrip, found 1 day ago

$905

Roundtrip

found 1 day ago

Select United flight, departing Tue, Sep 1 from Seattle to London, returning Fri, Sep 11, priced at $905 found 1 day ago

Tue, Sep 1 - Fri, Sep 11

SEA

Seattle

LHR

London

$909 Roundtrip, found 1 day ago

$909

Roundtrip

found 1 day ago

Select United flight, departing Tue, Sep 1 from Seattle to London, returning Fri, Sep 11, priced at $909 found 1 day ago

Mon, Sep 21 - Tue, Sep 29

SEA

Seattle

LHR

London

$916 Roundtrip, found 23 hours ago

$916

Roundtrip

found 23 hours ago

Select United flight, departing Mon, Sep 21 from Seattle to London, returning Tue, Sep 29, priced at $916 found 23 hours ago

Mon, Sep 21 - Tue, Sep 29

SEA

Seattle

LHR

London

$930 Roundtrip, found 23 hours ago

$930

Roundtrip

found 23 hours ago

Select United flight, departing Mon, Sep 21 from Seattle to London, returning Tue, Sep 29, priced at $930 found 23 hours ago

Mon, Sep 21 - Tue, Sep 29

SEA

Seattle

LHR

London

$942 Roundtrip, found 23 hours ago

$942

Roundtrip

found 23 hours ago

Select United flight, departing Mon, Sep 21 from Seattle to London, returning Tue, Sep 29, priced at $942 found 23 hours ago