A modern airport control tower with a spherical top and a curved, white-roofed building in the foreground.

Flights from London (LON-All Airports) to Washington Dulles International Airport (IAD)
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United States of America
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Popular airlines from London to Washington, DC (IAD-Washington Dulles Intl.)

TAP Portugal
British Airways
Swiss International Air Lines
Aer Lingus
Lufthansa
Austrian Airlines
Iberia

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Cheap Flights from London to Washington (LON-IAD)

Prices were available within the past 7 days and start at £304 for one-way flights and £365 for return, for the period specified. Prices and availability are subject to change.

All deals

One way

Return

Thu, 17 Dec - Sun, 27 Dec

LGW

London

IAD

Washington

£365

Return

Found 9 hours ago

Select Icelandair flight, departing Thu, 17 Dec from London to Washington, returning Sun, 27 Dec, priced at £365 Found 9 hours ago

Thu, 24 Dec - Sun, 27 Dec

LHR

London

IAD

Washington

£366

Return

Found 18 hours ago

Select Icelandair flight, departing Thu, 24 Dec from London to Washington, returning Sun, 27 Dec, priced at £366 Found 18 hours ago

Mon, 14 Dec - Sat, 9 Jan

LHR

London

IAD

Washington

£367

Return

Just found

Select Icelandair flight, departing Mon, 14 Dec from London to Washington, returning Sat, 9 Jan, priced at £367 Just found

Mon, 14 Dec - Wed, 6 Jan

LHR

London

IAD

Washington

£372

Return

Found 5 days ago

Select Icelandair flight, departing Mon, 14 Dec from London to Washington, returning Wed, 6 Jan, priced at £372 Found 5 days ago

Thu, 17 Dec - Wed, 23 Dec

LGW

London

IAD

Washington

£373

Return

Found 1 day ago

Select Icelandair flight, departing Thu, 17 Dec from London to Washington, returning Wed, 23 Dec, priced at £373 Found 1 day ago

Mon, 22 Mar - Tue, 30 Mar

LGW

London

IAD

Washington

£374

Return

Found 3 days ago

Select Icelandair flight, departing Mon, 22 Mar from London to Washington, returning Tue, 30 Mar, priced at £374 Found 3 days ago

Wed, 7 Oct - Wed, 2 Dec

LHR

London

IAD

Washington

£408

Return

Found 4 days ago

Select United flight, departing Wed, 7 Oct from London to Washington, returning Wed, 2 Dec, priced at £408 Found 4 days ago

Thu, 8 Oct - Sat, 21 Nov

LHR

London

IAD

Washington

£417

Return

Found 2 days ago

Select Iberia flight, departing Thu, 8 Oct from London to Washington, returning Sat, 21 Nov, priced at £417 Found 2 days ago

Fri, 30 Oct - Sun, 15 Nov

LHR

London

IAD

Washington

£418

Return

Found 2 days ago

Select KLM flight, departing Fri, 30 Oct from London to Washington, returning Sun, 15 Nov, priced at £418 Found 2 days ago

Fri, 30 Oct - Sun, 15 Nov

LHR

London

IAD

Washington

£423

Return

Found 2 days ago

Select Air France flight, departing Fri, 30 Oct from London to Washington, returning Sun, 15 Nov, priced at £423 Found 2 days ago

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Cheapest and Closest option available. Average driving time to city centre is 8 minutes. Flights from £747

DCA

Ronald Reagan Washington National

CheapestClosest

8 min

Flights from £747

Find the cheapest month to fly from London (LON) to Washington (IAD)

February is typically the cheapest month to fly

From £336 - £456 per traveller.

Travel information

Origin airport	London
Destination airport	Washington Dulles International Airport
Distance	3,689 miles away
Return price	£365

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Flights

Flights from Aberdeen (ABZ) to Washington (IAD)
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Flights from Dallas (DFW) to Washington (IAD)
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Flights from Edinburgh (EDI) to Washington (IAD)
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Flights from East Midlands (EMA) to Washington (IAD)
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Flights from Newark Liberty Intl. Airport (EWR) to Washington (IAD)
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Flights from Exeter (EXT) to Washington (IAD)
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Flights from Rome (FCO) to Washington (IAD)
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Flights from Freetown (FNA) to Washington (IAD)
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Flights from Frankfurt (FRA) to Washington (IAD)
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Flights from Glasgow (GLA) to Washington (IAD)
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Flights from Geneva (GVA) to Washington (IAD)
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Flights from Hull (HUY) to Washington (IAD)
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Flights from Hyderabad (HYD) to Washington (IAD)
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Flights from Niagara Falls (IAG) to Washington (IAD)
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Flights from Houston (IAH) to Washington (IAD)
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Flights from Seoul (ICN) to Washington (IAD)
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Flights from Inverness (INV) to Washington (IAD)
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Flights from Islamabad (ISB) to Washington (IAD)
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Flights from Leeds (LBA) to Washington (IAD)
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Flights from London (LCY) to Washington (IAD)
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Flights from London (LGW) to Washington (IAD)
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Flights from Lagos (LOS) to Washington (IAD)
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Flights from Liverpool (LPL) to Washington (IAD)
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Flights from Madrid (MAD) to Washington (IAD)
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Flights from Manchester (MAN) to Washington (IAD)
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Flights from Orlando (MCO) to Washington (IAD)
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Flights from Mexico City (MEX) to Washington (IAD)
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Flights from Miami (MIA) to Washington (IAD)
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Flights from Durham (MME) to Washington (IAD)
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Flights from New Orleans (MSY) to Washington (IAD)
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Flights from Nairobi (NBO) to Washington (IAD)
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Flights from Nice (NCE) to Washington (IAD)
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Flights from Newcastle (NCL) to Washington (IAD)
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Flights from Newquay (NQY) to Washington (IAD)
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Flights from Norwich (NWI) to Washington (IAD)
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Flights from Chicago (ORD) to Washington (IAD)
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Flights from Norfolk (ORF) to Washington (IAD)
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Flights from Princeton (PCT) to Washington (IAD)
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Flights from Philadelphia (PHL) to Washington (IAD)
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Flights from Phoenix (PHX) to Washington (IAD)
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Flights from Plymouth (PLH) to Washington (IAD)
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Flights from Providenciales (PLS) to Washington (IAD)
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Flights from Poughkeepsie (POU) to Washington (IAD)
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Flights from Raleigh (RDU) to Washington (IAD)
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Flights from Richmond (RIC) to Washington (IAD)
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Flights from Rochester (ROC) to Washington (IAD)
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Flights from Fort Myers (RSW) to Washington (IAD)
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Flights from Riyadh (RUH) to Washington (IAD)
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Flights from San Diego (SAN) to Washington (IAD)
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Flights from San Francisco (SFO) to Washington (IAD)
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Flights from Singapore (SIN) to Washington (IAD)
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Flights from London (STN) to Washington (IAD)
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Flights from Tampa (TPA) to Washington (IAD)
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Flights from Warsaw (WAW) to Washington (IAD)
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Flights from Halifax (YHZ) to Washington (IAD)
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Flights from Ottawa (YOW) to Washington (IAD)
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Flights from Montreal (YUL) to Washington (IAD)
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Flights from Toronto (YYZ) to Washington (IAD)
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£304 Cheap Flights from London (LON) to Washington (IAD)

Popular airlines from London to Washington, DC (IAD-Washington Dulles Intl.)

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Cheap Flights from London to Washington (LON-IAD)

Alternative airports near Washington

Find the cheapest month to fly from London (LON) to Washington (IAD)

February is typically the cheapest month to flyFebruary is typically the cheapest month to fly

Travel information

Explore a world of travel with Expedia

February is typically the cheapest month to fly