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Above you can see flights from London to Washington DC with multiple carriers. The fares are based on a trend (date and time mentioned). The fares are non-warranted unless the booking and transaction go successfully. The fares are inclusive of base fare, fuel surcharges, airline/airport taxes, and our service fee. Read Terms and Conditions to know more about our flight booking policy.

Search, Compare and Book a Flight to Washington from London

You may use the fare suggestions given above to confirm your reservation or book your reservation after performing a fresh flight search. We equip with the world’s best travel technology that helps you customize your search and find the lowest airfare to Washington.

Economy, premium, business or first class – No matter what travel category you choose, we can help you save big on your airline tickets to Washington. Read difference between business class and first class flight.

Cheapfaremart is an ASTA (American Society of Travel Agents)-certified travel company based in Orlando, Florida. We follow the high standards set by the US Department of Transportation.

Airports in London

1. London Heathrow Airport (LHR / EGLL)

London Heathrow Airport is a major airport in London that serves international and domestic flights. The airport is 18 miles from the center of London, United Kingdom and it ranks as the second busiest airport in the world by international passenger traffic. Only connecting flights to Washington are available and that too only with full-service airlines.

2. London City Airport (LCY/EGLC)

London City Airport has international and domestic flights and is 9 miles from the center of London, United Kingdom. Only connecting flights are available to Washington from LCY. Mind the layover time when you book your flight ticket.

3. London Gatwick Airport (LGW / EGKK)

London Gatwick Airport has international and domestic flights and is 33 miles from London, United Kingdom. The airport has nonstop as well as connecting flights to Washington with popular full-service airlines.

Airport in Washington DC

1. Baltimore Washington International Thurgood Marshall Airport

BWI Marshall Airport is 9 miles south of downtown Baltimore and 32 miles northeast of Washington, D.C. It is the busiest airport in the region, serving over 25 million passengers. There are frequent arrivals from London with nonstop flights.

2. Washington Dulles International Airport

Washington Dulles International Airport (IATA: IAD, ICAO: KIAD, FAA LID: IAD) is in the eastern United States, located in Loudoun and Fairfax counties in Virginia. The airport is 26 miles (42 km) west of downtown Washington, D.C.

3. Ronald Reagan Washington National Airport

Ronald Reagan Washington National Airport (IATA: DCA, ICAO: KDCA) is the oldest airport (1941) serving Washington, D.C. It is one of the major airports serving the city along with Washington Dulles International Airport. The airport is situated in Arlington, Virginia and is 6 miles from the center of Washington DC. The airport has connecting flights with full-service airlines. Mind the layover duration while confirming your plane ticket to Washington. Chicago – ORD and Philadelphia – PHL airport serve as layover airport in most of the cases.

How Long is the Flight from London to Washington DC?

The flight time from London to Washington is 7 hours, 51 minutes. The flight distance is 3,675 miles/5915 km. The table below displays the flight distance and flight time for different departure-airport pairs.


Flight Distance

Flight Time


3,634 miles/5849 km

7 hours 46 minutes


3,696 miles/5949 km

7 hours 54 minutes


3,682 miles/5926 km

7 hour 52 minutes


3,664 miles/5897 km

7 hours 50 minutes


3,654 miles/5881 km

7 hours 49 minutes


3,695 miles/5946 km

7 hours 53 minutes

Also keep in mind the time difference between the two cities. Washington is 4 hours behind London.

Note: The flight distance and time are for a nonstop flight (excluding any layover). The actual distance and time might vary, and are non-warranted. Check with your airlines to know precise information. 

Which Airlines Fly from London to Washington?


Nonstop or Connecting



Connecting only

American Airlines,British Airways,Iberia,Finnair,Virgin Atlantic,Air Canada,United Airlines


Connecting only

Aer Lingus,Lufthansa,British Airways,Virgin Atlantic, Swiss International Airlines, United Airlines,Flybe,Brussels Airlines


Connecting only

Finnair,American Airlines,British Airways,Iberia


Connecting only

Iberia,Virgin Atlantic,American Airlines,American Airlines,British Airways,Finnair,Air Canada, United Airlines



No airlines


Connecting only

AerLingus,Royal Air Maroc,British Airways,Icelandair,Turkish Airlines,United Airlines,Lufthansa Finnair,American Airlines

Guide to Book a Cheap Flight from London to Washington?

Cheapfaremart is committed to provide you the best available airfare. However, some practical travel hacks based on real-life experience are worth of getting your attention.

1. The cheapest time of the day to depart from London to Washington

Departures with a redeye flight to Washington are usually cheaper than the regular hour departures. The reason is obvious – sleep deprivation. You shouldn’t mind spoiling a few hours of comfortable sleep if it helps you grab some discount flight to Washington. However, make sure to reach the departure airport on time at least 3 hours before the flight departure.

2. The cheapest day of a week to fly from LON to WAS

Flight departures on a mid-weekday like a Tuesday, Wednesday or Thursday are often cheaper than the weekend departure particularly on a Friday late night, Saturday and Sunday. Weekend vacationers throng in Washington to unwind and relax. Airlines often raise their fare level to take advantage of the trend.

3. The cheapest months of a year to fly to WAS from LON

November to February are the cheapest months, but the weather is not favorable for a leisure vacation. Let the extreme winter season ends. Depart for a rewarding Washington vacation in spring from March to April. Or make your trip when the fall commences but mind the key festival season when fares may take you by surprise.

4. The cheapest airlines to fly from London to Washington

Flybe is the only budget carrier on the route LCY to Washington Dulles Airport IAD. We recommend you confirm your air ticket to Washington at least 21 days before the departure date.  While booking cheap flights to Washington or any other route, make sure you don’t ignore the terms associated with cancellation and refund. Remember, life is full uncertainties.

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