$384 Cheap United flights Washington (IAD) to London (LHR)

$384 Cheap United flights Washington (IAD) to London (LHR)

Prices were available within the past 7 days and start at $384 for one-way flights and $578 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Oct 1 - Wed, Oct 8

IAD

Washington

LHR

London

$578 Roundtrip, found 4 days ago

$578

Roundtrip

found 4 days ago

Select United flight, departing Wed, Oct 1 from Washington to London, returning Wed, Oct 8, priced at $578 found 4 days ago

Wed, Oct 1 - Wed, Oct 8

IAD

Washington

LHR

London

$584 Roundtrip, found 4 days ago

$584

Roundtrip

found 4 days ago

Select United flight, departing Wed, Oct 1 from Washington to London, returning Wed, Oct 8, priced at $584 found 4 days ago

Wed, Oct 1 - Wed, Oct 8

IAD

Washington

LHR

London

$596 Roundtrip, found 4 days ago

$596

Roundtrip

found 4 days ago

Select United flight, departing Wed, Oct 1 from Washington to London, returning Wed, Oct 8, priced at $596 found 4 days ago

Mon, Nov 10 - Fri, Nov 21

IAD

Washington

LHR

London

$620 Roundtrip, found 5 hours ago

$620

Roundtrip

found 5 hours ago

Select United flight, departing Mon, Nov 10 from Washington to London, returning Fri, Nov 21, priced at $620 found 5 hours ago