$374 Cheap United flights Washington (WAS) to London (LON)

$374 Cheap United flights Washington (WAS) to London (LON)

Prices were available within the past 7 days and start at $374 for one-way flights and $610 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Jan 25 - Wed, Feb 11

IAD

Washington

LHR

London

$610 Roundtrip, found 1 day ago

$610

Roundtrip

found 1 day ago

Select United flight, departing Sun, Jan 25 from Washington to London, returning Wed, Feb 11, priced at $610 found 1 day ago

Wed, Jan 28 - Sat, Feb 14

IAD

Washington

LHR

London

$623 Roundtrip, found 1 day ago

$623

Roundtrip

found 1 day ago

Select United flight, departing Wed, Jan 28 from Washington to London, returning Sat, Feb 14, priced at $623 found 1 day ago

Tue, Apr 7 - Tue, Apr 14

IAD

Washington

LHR

London

$625 Roundtrip, found 4 days ago

$625

Roundtrip

found 4 days ago

Select United flight, departing Tue, Apr 7 from Washington to London, returning Tue, Apr 14, priced at $625 found 4 days ago

Wed, Jan 28 - Sat, Feb 14

IAD

Washington

LHR

London

$628 Roundtrip, found 1 day ago

$628

Roundtrip

found 1 day ago

Select United flight, departing Wed, Jan 28 from Washington to London, returning Sat, Feb 14, priced at $628 found 1 day ago

Wed, Jan 28 - Sat, Feb 14

IAD

Washington

LHR

London

$630 Roundtrip, found 1 day ago

$630

Roundtrip

found 1 day ago

Select United flight, departing Wed, Jan 28 from Washington to London, returning Sat, Feb 14, priced at $630 found 1 day ago

Wed, Jan 28 - Sat, Feb 14

IAD

Washington

LHR

London

$638 Roundtrip, found 1 day ago

$638

Roundtrip

found 1 day ago

Select United flight, departing Wed, Jan 28 from Washington to London, returning Sat, Feb 14, priced at $638 found 1 day ago