Cheap flights from Washington, D.C. to London from £219
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
Cheapflights Tip: The best prices from Washington, D.C. to London are usually found in January or October, booked 70 days in advance, depart on a Tuesday or Monday and return on a Wednesday
Cheap flight deals from Washington, D.C. to London
Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 13 6月 2025.
Find flight deals from Washington, D.C. to London
Cheapest flights from Washington, D.C. to LondonExplore the most affordable flight options available from Washington, D.C. to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 6月 2025.
Explore the most affordable flight options available from Washington, D.C. to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 6月 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from Washington, D.C. to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 13 6月 2025.
Use the filters below to find and compare flights from Washington, D.C. to London that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
BaltimoreLondon
BWI - LHR
BWILHR
Baltimore/Washington
週一 1/9
20:30-20:20
1 stop18h 50m
London Heathrow
週六 20/9
21:25-19:25
1 stop27h 00m
BaltimoreLondon
BWI - LGW
BWILGW
Baltimore/Washington
週六 25/10
20:30-14:40
1 stop13h 10m
London Gatwick
週四 30/10
11:55-19:30
1 stop11h 35m
BaltimoreLondon
BWI - LGW
BWILGW
Baltimore/Washington
週三 10/9
05:45-10:00
2 stops23h 15m
London Gatwick
週三 17/9
14:00-23:27
1 stop14h 27m
BaltimoreLondon
BWI - LHR
BWILHR
Baltimore/Washington
週一 11/8
21:20-09:35
Nonstop7h 15m
London Heathrow
週二 16/9
13:10-22:49
1 stop14h 39m
BaltimoreLondon
BWI - LHR
BWILHR
Baltimore/Washington
週三 17/9
21:20-09:35
Nonstop7h 15m
London Heathrow
週二 23/9
16:35-19:35
Nonstop8h 00m
BaltimoreLondon
BWI - STN
BWISTN
Baltimore/Washington
週三 20/8
18:50-10:40
1 stop10h 50m
London Stansted
週二 2/9
11:40-17:40
1 stop11h 00m
BaltimoreLondon
BWI - LHR
BWILHR
Baltimore/Washington
週三 13/8
17:15-08:55
1 stop10h 40m
London Heathrow
週五 22/8
09:40-16:52
1 stop12h 12m
BaltimoreLondon
BWI - LTN
BWILTN
Baltimore/Washington
週二 2/9
20:30-13:00
1 stop11h 30m
London Luton
週日 7/9
06:50-19:25
1 stop17h 35m
BaltimoreLondon
BWI - LHR
BWILHR
Baltimore/Washington
週四 10/7
13:08-06:45
1 stop12h 37m
London Heathrow
週四 24/7
09:40-16:45
1 stop12h 05m
Washington, D.C.London
DCA - LGW
DCALGW
Washington, D.C. Reagan-National
週五 29/8
11:00-10:00
1 stop18h 00m
London Gatwick
週五 5/9
12:00-23:46
2 stops16h 46m
Best time to book a flight from Washington, D.C. to London
Have a flexible travel schedule? Discover the best time to fly to London from Washington, D.C. with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Washington, D.C. to London
How far ahead should I book a flight from Washington, D.C. to London?
Use this chart to determine the optimal time to book a return flight from Washington, D.C. to London. Price data was last updated on 9 June 2025.
The best time to book flights from Washington, D.C. to London is 70 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Washington, D.C. to London?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to London (average of £112). Flying from Washington, D.C. to London in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from WAS to LON?
Find hourly flight availability from Washington, D.C. to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 6月 2025.
It’s optimal to fly from Washington, D.C. to London in the afternoon. By choosing this option you can save up to 59% on the cost of your flight, compared to a flight in the morning.
Weekly flight availability from Washington, D.C. to London
Explore weekly flight availability from Washington, D.C. to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 13 6月 2025.
The most flights from WAS to LON are scheduled on a Wednesday (27 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (23 on average).
Rainfall in London by month
Plan your trip to London by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.
Temperature in London by month
Plan your trip to London by taking into account the average temperature totals by month.
If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).
Reviews of airlines servicing London
Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 13 6月 2025.
Read through reviews of airlines operating flights from Washington, D.C. to London, such as Delta, Porter Airlines and KLM. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Related info for your journey
Find useful and relevant information for your journey from Washington, D.C. to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Travelling to a place near Washington, D.C.?
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Alternative routes for Washington, D.C. to London
See prices for flight routes from nearby airports that may be better suited for you.
Top 9 airlines flying from Washington, D.C. to London
Discover the top 9 airlines that operate flights from Washington, D.C. to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 13 6月 2025.
Fly with Cheapflights
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How does Cheapflights help users find flights from Washington, D.C. to London?
Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Washington, D.C. to London. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.
Why should you use Cheapflights to find cheap flight tickets from Washington, D.C. to London?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Washington, D.C. to London.
Can Cheapflights find flights from Washington, D.C. to London with no change fees?
Certainly. Search results for flights to London from Washington, D.C. shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Can Cheapflights notify me if prices for flights from Washington, D.C. to London become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Washington, D.C. today and book when prices fit your budget.