Flights from Washington to London

Cheapest flights from Washington

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, May 3 - Sun, May 12

IAD

Washington Dulles Intl.

STN

Stansted

$546 Roundtrip, found 17 hours ago

$546

Roundtrip

found 17 hours ago

Select Fly Play flight, departing Fri, May 3 from Washington Dulles Intl. to Stansted, returning Sun, May 12, priced at $546 found 17 hours ago

Mon, Oct 21 - Mon, Oct 28

IAD

Washington Dulles Intl.

LHR

Heathrow

$580 Roundtrip, found 15 hours ago

$580

Roundtrip

found 15 hours ago

Select Delta flight, departing Mon, Oct 21 from Washington Dulles Intl. to Heathrow, returning Mon, Oct 28, priced at $580 found 15 hours ago

Mon, Oct 21 - Mon, Oct 28

IAD

Washington Dulles Intl.

LHR

Heathrow

$580 Roundtrip, found 15 hours ago

$580

Roundtrip

found 15 hours ago

Select Scandinavian Airlines flight, departing Mon, Oct 21 from Washington Dulles Intl. to Heathrow, returning Mon, Oct 28, priced at $580 found 15 hours ago

Sun, Apr 21 - Tue, Apr 30

IAD

Washington Dulles Intl.

LHR

Heathrow

$584 Roundtrip, found 2 days ago

$584

Roundtrip

found 2 days ago

Select Delta flight, departing Sun, Apr 21 from Washington Dulles Intl. to Heathrow, returning Tue, Apr 30, priced at $584 found 2 days ago

Wed, Sep 18 - Mon, Sep 23

IAD

Washington Dulles Intl.

LHR

Heathrow

$601 Roundtrip, found 4 days ago

$601

Roundtrip

found 4 days ago

Select TAP Portugal flight, departing Wed, Sep 18 from Washington Dulles Intl. to Heathrow, returning Mon, Sep 23, priced at $601 found 4 days ago

Sun, Apr 21 - Mon, Apr 29

IAD

Washington Dulles Intl.

LHR

Heathrow

$605 Roundtrip, found 6 days ago

$605

Roundtrip

found 6 days ago

Select United flight, departing Sun, Apr 21 from Washington Dulles Intl. to Heathrow, returning Mon, Apr 29, priced at $605 found 6 days ago

Tue, Aug 20 - Tue, Oct 1

IAD

Washington Dulles Intl.

LHR

Heathrow

$618 Roundtrip, found 3 days ago

$618

Roundtrip

found 3 days ago

Select Virgin Atlantic flight, departing Tue, Aug 20 from Washington Dulles Intl. to Heathrow, returning Tue, Oct 1, priced at $618 found 3 days ago

Wed, Sep 18 - Mon, Sep 23

IAD

Washington Dulles Intl.

LHR

Heathrow

$621 Roundtrip, found 4 days ago

$621

Roundtrip

found 4 days ago

Select American Airlines flight, departing Wed, Sep 18 from Washington Dulles Intl. to Heathrow, returning Mon, Sep 23, priced at $621 found 4 days ago

Wed, Sep 18 - Mon, Sep 23

IAD

Washington Dulles Intl.

LHR

Heathrow

$622 Roundtrip, found 4 days ago

$622

Roundtrip

found 4 days ago

Select Icelandair flight, departing Wed, Sep 18 from Washington Dulles Intl. to Heathrow, returning Mon, Sep 23, priced at $622 found 4 days ago

Mon, Oct 21 - Mon, Oct 28

IAD

Washington Dulles Intl.

LHR

Heathrow

$626 Roundtrip, found 15 hours ago

$626

Roundtrip

found 15 hours ago

Select Swiss International Air Lines flight, departing Mon, Oct 21 from Washington Dulles Intl. to Heathrow, returning Mon, Oct 28, priced at $626 found 15 hours ago

Wed, Aug 7 - Sat, Aug 17

BWI

Baltimore Washington Intl. Thurgood Marshall

STN

Stansted

$659 Roundtrip, found 1 day ago

$659

Roundtrip

found 1 day ago

Select Fly Play flight, departing Wed, Aug 7 from Baltimore Washington Intl. Thurgood Marshall to Stansted, returning Sat, Aug 17, priced at $659 found 1 day ago

Mon, Oct 21 - Mon, Oct 28

IAD

Washington Dulles Intl.

LHR

Heathrow

$662 Roundtrip, found 15 hours ago

$662

Roundtrip

found 15 hours ago

Select British Airways flight, departing Mon, Oct 21 from Washington Dulles Intl. to Heathrow, returning Mon, Oct 28, priced at $662 found 15 hours ago

Mon, Oct 21 - Mon, Oct 28

IAD

Washington Dulles Intl.

LHR

Heathrow

$665 Roundtrip, found 15 hours ago

$665

Roundtrip

found 15 hours ago

Select Lufthansa flight, departing Mon, Oct 21 from Washington Dulles Intl. to Heathrow, returning Mon, Oct 28, priced at $665 found 15 hours ago

Mon, Oct 21 - Mon, Oct 28

IAD

Washington Dulles Intl.

LHR

Heathrow

$666 Roundtrip, found 15 hours ago

$666

Roundtrip

found 15 hours ago

Select KLM flight, departing Mon, Oct 21 from Washington Dulles Intl. to Heathrow, returning Mon, Oct 28, priced at $666 found 15 hours ago

Tue, Aug 6 - Tue, Aug 20

DCA

Ronald Reagan Washington National

LHR

Heathrow

$675 Roundtrip, found 3 days ago

$675

Roundtrip

found 3 days ago

Select Virgin Atlantic flight, departing Tue, Aug 6 from Ronald Reagan Washington National to Heathrow, returning Tue, Aug 20, priced at $675 found 3 days ago

Tue, May 21 - Wed, May 29

BWI

Baltimore Washington Intl. Thurgood Marshall

LHR

Heathrow

$684 Roundtrip, found 4 days ago

$684

Roundtrip

found 4 days ago

Select Icelandair flight, departing Tue, May 21 from Baltimore Washington Intl. Thurgood Marshall to Heathrow, returning Wed, May 29, priced at $684 found 4 days ago

Tue, May 21 - Tue, May 28

IAD

Washington Dulles Intl.

LGW

Gatwick

$692 Roundtrip, found 5 days ago

$692

Roundtrip

found 5 days ago

Select Delta flight, departing Tue, May 21 from Washington Dulles Intl. to Gatwick, returning Tue, May 28, priced at $692 found 5 days ago

Mon, Oct 21 - Mon, Oct 28

IAD

Washington Dulles Intl.

LHR

Heathrow

$700 Roundtrip, found 15 hours ago

$700

Roundtrip

found 15 hours ago

Select Air France flight, departing Mon, Oct 21 from Washington Dulles Intl. to Heathrow, returning Mon, Oct 28, priced at $700 found 15 hours ago

Wed, Aug 7 - Sat, Aug 17

IAD

Washington Dulles Intl.

LCY

London City

$978 Roundtrip, found 1 day ago

$978

Roundtrip

found 1 day ago

Select ITA Airways flight, departing Wed, Aug 7 from Washington Dulles Intl. to London City, returning Sat, Aug 17, priced at $978 found 1 day ago

Thu, Jun 13 - Sun, Jun 30

DCA

Ronald Reagan Washington National

LGW

Gatwick

$1,847 Roundtrip, found 5 days ago

$1,847

Roundtrip

found 5 days ago

Select American Airlines flight, departing Thu, Jun 13 from Ronald Reagan Washington National to Gatwick, returning Sun, Jun 30, priced at $1,847 found 5 days ago