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Washington D.C. to London - Flights Starting at US$218

Book one-way or return flights from Washington D.C. to London from as little as US$218. Choose from the popular airlines below and book your flight today!

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

We've found these cheap flights for you. You may book a one-way or round trip as per your needs.

We monitor flight fares to help you seize the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Cheapest airlines flights from Washington D.C. to London

View airlines operating flights from Washington D.C. to London. Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

PLAY Airline
From US$232
Delta Air Lines
From US$237
Icelandair
From US$238
American Airlines
From US$278
United Airlines
From US$305
Sun Country Airlines
From US$334
Scandinavian Airlines
From US$372
TAP Air Portugal
From US$388
ITA Airways
From US$432
British Airways
From US$451
ANA airlines

Find more flights and airlines

Alternative Routes from Washington D.C. to London

Discover different routes, airlines, and transfers and find the best alternative flights for your journey from Washington D.C. to London.

  • Cheapest
    PLAY Airline
    IAD
    18:50
    13h 50m
    1 transfer
    LTN
    13:40
    Dulles International Airport - London Luton Airport
    Tue, Jul 23PLAY Airline
    US$232
  • Icelandair
    IAD
    20:30
    10h 15m
    1 transfer
    LGW
    11:45
    Dulles International Airport - London Gatwick Airport
    Wed, Jul 24Icelandair
    US$238
  • PLAY Airline
    IAD
    18:50
    10h 50m
    1 transfer
    STN
    10:40
    Dulles International Airport - London Stansted Airport
    Tue, Jul 23PLAY Airline
    US$238
  • PLAY Airline
    IAD
    18:50
    10h 50m
    1 transfer
    STN
    10:40
    Dulles International Airport - London Stansted Airport
    Tue, Jul 23PLAY Airline
    US$238
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from Washington D.C. (WAS) to London (LON) the cheapest?

    Airlines adjust prices for flights from Washington D.C. to London based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much do flights from Washington D.C. (WAS) to London (LON) cost?

    According to Trip.com's data, the lowest price is around $1,118.
  • How long does it take to fly from Washington D.C. (WAS) to London (LON) and what is the distance?

    It takes around 7 hours 15 minutes to fly from Washington D.C. (WAS) to London (LON).
  • What is the transportation method from the main airport to downtown in London?

    • The distance from London Gatwick Airport to downtown is about 39km. It takes about 50 minutes by taxi.
    • The distance from London Heathrow Airport to downtown is about 23km. It takes about 40 minutes by taxi.
    • The distance from London Luton Airport to downtown is about 44km. It takes about 1 hour by taxi.
  • What are the most popular airlines that fly from Washington D.C. (WAS) to London (LON)?

How to find a cheap flight from Washington D.C. to London

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Washington D.C. to London. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com
Washington D.C. to London Flight Information

Cheapest nonstop flight price

$217

Cheapest round-trip ticket price

$646

Off-season for travel

March

Peak season for travel

August

Flight distance

5,896.82km

Average flight time

7 hours 15 minutes

Popular airline

Iberia