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.

Tue, Sep 2 - Wed, Sep 17

IAD

Washington Dulles Intl.

LGW

Gatwick

$494 Roundtrip, found 4 days ago

$494

Roundtrip

found 4 days ago

Select American Airlines flight, departing Tue, Sep 2 from Washington Dulles Intl. to Gatwick, returning Wed, Sep 17, priced at $494 found 4 days ago

Tue, Sep 2 - Mon, Oct 6

IAD

Washington Dulles Intl.

LHR

Heathrow

$508 Roundtrip, found 22 hours ago

$508

Roundtrip

found 22 hours ago

Select British Airways flight, departing Tue, Sep 2 from Washington Dulles Intl. to Heathrow, returning Mon, Oct 6, priced at $508 found 22 hours ago

Tue, Sep 2 - Mon, Oct 6

IAD

Washington Dulles Intl.

LHR

Heathrow

$511 Roundtrip, found 22 hours ago

$511

Roundtrip

found 22 hours ago

Select Virgin Atlantic flight, departing Tue, Sep 2 from Washington Dulles Intl. to Heathrow, returning Mon, Oct 6, priced at $511 found 22 hours ago

Tue, Sep 2 - Wed, Sep 17

IAD

Washington Dulles Intl.

LGW

Gatwick

$516 Roundtrip, found 4 days ago

$516

Roundtrip

found 4 days ago

Select Swiss International Air Lines flight, departing Tue, Sep 2 from Washington Dulles Intl. to Gatwick, returning Wed, Sep 17, priced at $516 found 4 days ago

Tue, Sep 2 - Mon, Oct 6

IAD

Washington Dulles Intl.

LHR

Heathrow

$523 Roundtrip, found 22 hours ago

$523

Roundtrip

found 22 hours ago

Select Delta flight, departing Tue, Sep 2 from Washington Dulles Intl. to Heathrow, returning Mon, Oct 6, priced at $523 found 22 hours ago

Wed, Aug 13 - Wed, Aug 20

DCA

Ronald Reagan Washington National

LHR

Heathrow

$528 Roundtrip, found 5 days ago

$528

Roundtrip

found 5 days ago

Select Air Canada flight, departing Wed, Aug 13 from Ronald Reagan Washington National to Heathrow, returning Wed, Aug 20, priced at $528 found 5 days ago

Wed, Aug 13 - Wed, Aug 20

DCA

Ronald Reagan Washington National

LHR

Heathrow

$533 Roundtrip, found 5 days ago

$533

Roundtrip

found 5 days ago

Select United flight, departing Wed, Aug 13 from Ronald Reagan Washington National to Heathrow, returning Wed, Aug 20, priced at $533 found 5 days ago

Wed, Aug 13 - Wed, Aug 20

DCA

Ronald Reagan Washington National

LHR

Heathrow

$533 Roundtrip, found 5 days ago

$533

Roundtrip

found 5 days ago

Select American Airlines flight, departing Wed, Aug 13 from Ronald Reagan Washington National to Heathrow, returning Wed, Aug 20, priced at $533 found 5 days ago

Tue, Sep 2 - Wed, Sep 17

IAD

Washington Dulles Intl.

LGW

Gatwick

$561 Roundtrip, found 4 days ago

$561

Roundtrip

found 4 days ago

Select TAP Portugal flight, departing Tue, Sep 2 from Washington Dulles Intl. to Gatwick, returning Wed, Sep 17, priced at $561 found 4 days ago

Tue, Sep 2 - Mon, Oct 6

IAD

Washington Dulles Intl.

LHR

Heathrow

$563 Roundtrip, found 22 hours ago

$563

Roundtrip

found 22 hours ago

Select KLM flight, departing Tue, Sep 2 from Washington Dulles Intl. to Heathrow, returning Mon, Oct 6, priced at $563 found 22 hours ago

Tue, Jul 22 - Wed, Jul 30

BWI

Baltimore Washington Intl. Thurgood Marshall

LHR

Heathrow

$566 Roundtrip, found 1 day ago

$566

Roundtrip

found 1 day ago

Select Virgin Atlantic flight, departing Tue, Jul 22 from Baltimore Washington Intl. Thurgood Marshall to Heathrow, returning Wed, Jul 30, priced at $566 found 1 day ago

Fri, Sep 5 - Tue, Oct 7

IAD

Washington Dulles Intl.

LHR

Heathrow

$568 Roundtrip, found 22 hours ago

$568

Roundtrip

found 22 hours ago

Select Delta flight, departing Fri, Sep 5 from Washington Dulles Intl. to Heathrow, returning Tue, Oct 7, priced at $568 found 22 hours ago

Tue, Sep 2 - Mon, Oct 6

IAD

Washington Dulles Intl.

LHR

Heathrow

$575 Roundtrip, found 22 hours ago

$575

Roundtrip

found 22 hours ago

Select Air France flight, departing Tue, Sep 2 from Washington Dulles Intl. to Heathrow, returning Mon, Oct 6, priced at $575 found 22 hours ago

Wed, Sep 24 - Sun, Oct 5

DCA

Ronald Reagan Washington National

LHR

Heathrow

$575 Roundtrip, found 6 days ago

$575

Roundtrip

found 6 days ago

Select Air Canada flight, departing Wed, Sep 24 from Ronald Reagan Washington National to Heathrow, returning Sun, Oct 5, priced at $575 found 6 days ago

Thu, Dec 11 - Tue, Dec 16

IAD

Washington Dulles Intl.

LHR

Heathrow

$581 Roundtrip, found 1 day ago

$581

Roundtrip

found 1 day ago

Select Austrian Airlines flight, departing Thu, Dec 11 from Washington Dulles Intl. to Heathrow, returning Tue, Dec 16, priced at $581 found 1 day ago

Wed, Sep 24 - Sun, Oct 5

IAD

Washington Dulles Intl.

LGW

Gatwick

$601 Roundtrip, found 6 days ago

$601

Roundtrip

found 6 days ago

Select Icelandair flight, departing Wed, Sep 24 from Washington Dulles Intl. to Gatwick, returning Sun, Oct 5, priced at $601 found 6 days ago

Fri, Sep 26 - Fri, Oct 3

IAD

Washington Dulles Intl.

LHR

Heathrow

$614 Roundtrip, found 5 days ago

$614

Roundtrip

found 5 days ago

Select Scandinavian Airlines flight, departing Fri, Sep 26 from Washington Dulles Intl. to Heathrow, returning Fri, Oct 3, priced at $614 found 5 days ago

Thu, Nov 6 - Mon, Nov 10

BWI

Baltimore Washington Intl. Thurgood Marshall

LGW

Gatwick

$619 Roundtrip, found 6 days ago

$619

Roundtrip

found 6 days ago

Select Icelandair flight, departing Thu, Nov 6 from Baltimore Washington Intl. Thurgood Marshall to Gatwick, returning Mon, Nov 10, priced at $619 found 6 days ago

Wed, Sep 24 - Sun, Oct 5

BWI

Baltimore Washington Intl. Thurgood Marshall

STN

Stansted

$747 Roundtrip, found 6 days ago

$747

Roundtrip

found 6 days ago

Select Fly Play flight, departing Wed, Sep 24 from Baltimore Washington Intl. Thurgood Marshall to Stansted, returning Sun, Oct 5, priced at $747 found 6 days ago

Tue, Nov 4 - Mon, Nov 10

IAD

Washington Dulles Intl.

LCY

London City

$897 Roundtrip, found 6 days ago

$897

Roundtrip

found 6 days ago

Select British Airways flight, departing Tue, Nov 4 from Washington Dulles Intl. to London City, returning Mon, Nov 10, priced at $897 found 6 days ago