$469 Cheap United flights Seattle (SEA) to London (LHR)

$469 Cheap United flights Seattle (SEA) to London (LHR)

Prices were available within the past 7 days and start at $469 for one-way flights and $603 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Dec 31 - Fri, Jan 16

SEA

Seattle

LHR

London

$603 Roundtrip, found 12 hours ago

$603

Roundtrip

found 12 hours ago

Select United flight, departing Wed, Dec 31 from Seattle to London, returning Fri, Jan 16, priced at $603 found 12 hours ago

Thu, Jan 1 - Tue, Jan 13

SEA

Seattle

LHR

London

$626 Roundtrip, found 2 days ago

$626

Roundtrip

found 2 days ago

Select United flight, departing Thu, Jan 1 from Seattle to London, returning Tue, Jan 13, priced at $626 found 2 days ago

Thu, Jan 1 - Thu, Jan 15

SEA

Seattle

LHR

London

$627 Roundtrip, found 2 days ago

$627

Roundtrip

found 2 days ago

Select United flight, departing Thu, Jan 1 from Seattle to London, returning Thu, Jan 15, priced at $627 found 2 days ago

Fri, Dec 12 - Thu, Dec 25

SEA

Seattle

LHR

London

$637 Roundtrip, found 2 days ago

$637

Roundtrip

found 2 days ago

Select United flight, departing Fri, Dec 12 from Seattle to London, returning Thu, Dec 25, priced at $637 found 2 days ago

Mon, Dec 1 - Wed, Dec 17

SEA

Seattle

LHR

London

$642 Roundtrip, found 2 days ago

$642

Roundtrip

found 2 days ago

Select United flight, departing Mon, Dec 1 from Seattle to London, returning Wed, Dec 17, priced at $642 found 2 days ago

Fri, Dec 12 - Wed, Dec 24

SEA

Seattle

LHR

London

$643 Roundtrip, found 2 days ago

$643

Roundtrip

found 2 days ago

Select United flight, departing Fri, Dec 12 from Seattle to London, returning Wed, Dec 24, priced at $643 found 2 days ago