Cheap flights from Washington (WAS) to London (LON)

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The best prices from Washington to London are usually found in October or November, booked 49 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

How to find the cheapest flight from
Washington (WAS) to London (LON)

All the information you need to plan the best WAS to LON flight in 2021: compare Washington to London flight prices with the expected peak season, weather and rainfall in London.
WAS - LON
Price
$628 - $886
LON
Temperature
48.2 - 73.4 °F
LON
Rainfall
1.4 - 2.8 inches

Popular in

June

High demand for flights, 20% potential price rise

Cheapest in

October

Best time to find cheap flights, 11% potential price drop

Round-trip from

$628

From Washington to London

One-way from

$276

One-way flight from Washington to London

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Washington to London?

Friday flights are generally found to be more expensive for flights from Washington to London. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London.

How far in advance should I book a flight from Washington to London?

To save on the cost of your flight from Washington to London, book at least 61 days before your planned departure. Booking around this time can save you about 44% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $910 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $1,146.

What is the cheapest month to fly from Washington to London?

Our data shows that October tends to be the cheapest month to fly to London from Washington. Users have commonly found prices around $714 for the month, but tickets can be as low as $445. Due to multiple factors, prepare for potentially higher prices in July.

When is the cheapest time to fly from Washington to London (WAS - LON)?

When flying from Washington to London, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 6% versus a flight in the morning.

Cheap flights from Washington to London in May, June 2021

The best prices found for WAS to LON flights for May, June
14 Jun - 19 Jun
$444pp
IAD
Washington Dulles Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
STN
London Stansted
Multiple Airlines
   
2 STOPS
IAD
Washington Dulles Intl
28 May - 30 Jun
$445pp
IAD
Washington Dulles Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
STN
London Stansted
Multiple Airlines
   
2 STOPS
IAD
Washington Dulles Intl
14 Jun - 21 Jun
$449pp
IAD
Washington Dulles Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
STN
London Stansted
Multiple Airlines
   
2 STOPS
IAD
Washington Dulles Intl

Washington to London 2021 flight deals

Cheap flights to London from Washington found for this year
18 Sep - 19 Sep
$323pp
IAD
Washington Dulles Intl
SAS
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
SAS
 
1 STOP
IAD
Washington Dulles Intl
18 Sep - 19 Sep
$329pp
IAD
Washington Dulles Intl
SAS
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
SAS
 
1 STOP
IAD
Washington Dulles Intl
18 Sep - 19 Sep
$359pp
IAD
Washington Dulles Intl
SAS
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
SAS
   
2 STOPS
IAD
Washington Dulles Intl

Non-stop flights to London from Washington

Save time with Washington to London direct flight deals
7 Sep - 21 Sep
$602pp
IAD
Washington Dulles Intl
Virgin Atlantic
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Virgin Atlantic
Non-Stop
IAD
Washington Dulles Intl
29 Sep - 6 Oct
$633pp
IAD
Washington Dulles Intl
Lufthansa
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Lufthansa
Non-Stop
IAD
Washington Dulles Intl
29 Sep - 13 Oct
$634pp
BWI
Baltimore/Washington
Finnair
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Finnair
Non-Stop
BWI
Baltimore/Washington

Last minute flights from Washington to London

Late deals on round-trip flights to London from Washington, departing today and this week
16 May - 22 May
$494pp
IAD
Washington Dulles Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
STN
London Stansted
Multiple Airlines
   
2 STOPS
IAD
Washington Dulles Intl
16 May - 7 Jun
$518pp
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl
20 May - 10 Jun
$540pp
IAD
Washington Dulles Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
STN
London Stansted
Multiple Airlines
   
2 STOPS
IAD
Washington Dulles Intl

One-way flights to London from Washington

The cheapest one-way flights from Washington to London
5:46 am - 3:50 am
Multiple Airlines
2 Stops
41h 04m
DCA - LGW
Multiple Airlines
$276
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Washington</span> to <span class="emphasized">London</span> flights.

Flight FAQs

From Washington to London

Are flight prices decreasing from Washington to London due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Washington and London for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Which airlines flying from Washington to London have flexible cancellations due to COVID-19?

Some of our airline partners flying from Washington to London have new flexible policies in place due to COVID-19. British Airways, United Airlines, and American Airlines are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like British Airways with this kind of flexibility.

Can I find flights from Washington to London for under $400 on Cheapflights?

Yes, there are multiple flights from Washington to London for under $400. The cheapest flight booked recently is on SAS for just $323, but on average you can expect to pay $370.

Are there nonstop flights from Washington to London for under $700 on Cheapflights?

Cheapflights has at least 20 direct flights from Washington to London under $700. A good price for a nonstop flight from Washington to London is less than $644.

Are there last-minute flights available from Washington to London for under $500?

There are currently 20+ open flights from Washington to London within the next 7 days for less than $500.

Is Washington weather warmer or cooler than London?

Our data indicates that the weather will be 90 °F on average in the month of July. The temperature in London is typically colder than in Washington. If you're traveling when the temperature is at its warmest, push to plan early, as flight price and availability will have an impact on your travels. For the best results, search for flights well in advance or after peak season.

How long is the flight from Washington to London?

Departing from Washington to London will take you 6h 55m. Most flights are nonstop.

What is the cheapest airline to fly from Washington to London round-trip?

According to our current data, SAS ($323), offers the cheapest pricing from Washington to London. You may be able to fly from Washington to London for 54% less than the average price by searching for this airline.

What are the cheapest airlines to fly from Washington to London one-way?

The cheapest airlines for a one-way flight from Washington to London are TAP AIR PORTUGAL ($248) and Iberia ($272).

Destination information for London

Things to know before you go - useful duration and weather info for your trip from Washington to London.
Today's exchange rate
$1 = £0.72
Flight duration
7h 37m
Average temperature for May in London
64.4 °F
Avg rainfall for May in London
2.0 ″

Airports servicing Washington

Reagan National (DCA)

Airports servicing London

Gatwick (LGW)
City (LCY)
Stansted (STN)
Luton (LTN)
Southend (SEN)

Top 10 airlines flying from Washington to London

The chart below displays the airlines Cheapflights users traveling from Washington to London choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
SWISS
$473 $615 No cancel fee 79%
WOW air
$410 $625 No cancel fee N/A

We couldn't confirm the COVID-19 safety measures taken by WOW air. Please check directly on their website for additional information.

KLM
$481 $632 No cancel fee 75%
SAS
$355 $652 No cancel fee 77%
Air France
$492 $705 No cancel fee 77%
Finnair
$503 $718 No cancel fee 76%
Iberia
$520 $734 No cancel fee 77%
TAP AIR PORTUGAL
$504 $765 No cancel fee N/A
Delta
$415 $827 No cancel fee N/A
Aer Lingus
$531 $871 No cancel fee N/A

Hourly flight availability from Washington to London

See what time of day planes typically take off from Washington towards London.
Afternoon Noon to 6 PM 54% of WAS to LON departures
Evening 6 PM to midnight 45% of WAS to LON departures
Early morning Midnight to 6 AM 1% of WAS to LON departures
Morning 6 AM to noon 0% of WAS to LON departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Washington to London
See how many times per day planes take to the skies headed from Washington to London.
Sunday
11 daily flights
Monday
11 daily flights
Tuesday
11 daily flights
Wednesday
11 daily flights
Thursday
11 daily flights
Friday
11 daily flights
Saturday
11 daily flights
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