$403 Cheap United flights Seattle (SEA) to London (LHR)

$403 Cheap United flights Seattle (SEA) to London (LHR)

Prices were available within the past 7 days and start at $403 for one-way flights and $550 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Oct 21 - Tue, Nov 4

SEA

Seattle

LHR

London

$550 Roundtrip, found 15 hours ago

$550

Roundtrip

found 15 hours ago

Select United flight, departing Tue, Oct 21 from Seattle to London, returning Tue, Nov 4, priced at $550 found 15 hours ago

Tue, Sep 2 - Tue, Sep 16

SEA

Seattle

LHR

London

$555 Roundtrip, found 14 hours ago

$555

Roundtrip

found 14 hours ago

Select United flight, departing Tue, Sep 2 from Seattle to London, returning Tue, Sep 16, priced at $555 found 14 hours ago

Tue, Oct 21 - Tue, Nov 4

SEA

Seattle

LHR

London

$556 Roundtrip, found 15 hours ago

$556

Roundtrip

found 15 hours ago

Select United flight, departing Tue, Oct 21 from Seattle to London, returning Tue, Nov 4, priced at $556 found 15 hours ago

Tue, Oct 21 - Tue, Nov 4

SEA

Seattle

LHR

London

$595 Roundtrip, found 15 hours ago

$595

Roundtrip

found 15 hours ago

Select United flight, departing Tue, Oct 21 from Seattle to London, returning Tue, Nov 4, priced at $595 found 15 hours ago