£443 Cheap United flights from London to Washington (LHR→IAD)

View £443 flight on Mon, 11 Jan 2027Opens in a new window

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United flights from London to Washington (LHR→IAD)

Prices were available within the past 7 days and start at £443 for one-way flights and £468 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, 27 Feb - Tue, 24 Mar
LHR
London
IAD
Washington
£468 Return, found 6 days ago
£468
Return
found 6 days ago
Select United flight, departing Fri, 27 Feb from London to Washington, returning Tue, 24 Mar, priced at £468 found 6 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 £446
DCA
Ronald Reagan Washington National
CheapestClosest
Average driving time to city centre8 min
Flights from £446

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

February is typically the cheapest month to fly

From £352 - £590 per traveller.

Frequently asked questions

How much is a United Airlines flight from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)?
Apply the "Price (lowest to highest)" filter on Expedia to search for cheap United Airlines round-trip flights from £468 from LHR to IAD. Affordable one-way options from £443 are available as well.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from LHR to IAD with United Airlines?
Browse for return or one-way flights to Washington in January or February. You could find a cheap fare with United Airlines during these quieter months.
Does United Airlines fly nonstop from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)?
Yes, you can travel from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD) on any of United Airlines's 14 weekly direct flights. Use Expedia's "Nonstop" and "Airline" filters to find the United Airlines flight that'll arrive at IAD at your preferred time.
How long does it take to fly from LHR to IAD with United Airlines?
Depart Heathrow Airport (LHR) for Washington Dulles Intl. Airport (IAD) on a direct United Airlines flight, and you'll be in the air for about 8h 45m.
Which day of the week has the most United Airlines flights from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)?
Wednesday has the most United Airlines flights from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD). With 2 daily departures, this is the best day to find something that will suit your plans.
What airports does United Airlines fly into in Washington?
United Airlines flights from Heathrow Airport (LHR) to Washington arrive at Washington Dulles Intl. Airport (IAD) and Baltimore Washington Intl. Thurgood Marshall Airport (BWI). The primary Washington gateway serviced by this carrier is IAD. It's always worth comparing flights landing at nearby airports on Expedia as they may offer cheaper tickets.
What type of plane does United Airlines fly from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)?
United Airlines typically flies Boeing 767-300 planes for flights from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD). This airline also operates the Boeing 777 on this route. Bear in mind that aircraft type can vary depending on operational reasons, so the plane you catch could be different on the day.
Can I change or cancel my United Airlines flight from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)?
Depending on the type of ticket you purchased, a fee may apply if you change or cancel your flight more than 24 hours after it's been confirmed. To find plane tickets with more flexibility, select our "No cancel fee" or "Changes included" filter while looking for flights. For more information on cancelling or modifying your reservation, go to "Trips," select your flight and click on "Manage Booking."

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Travel information

Origin airport
Heathrow
Destination airport
Washington Dulles Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, ITA Airways, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Popular airline
British Airways
Distance
5866 km
Average flight time
3 hours 36 mins

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