C$346 Cheap Flights from London (YXU) to Washington D.C. (WASA)

Compare London to Washington D.C. flight deals

Find the cheapest month or even day of the year to fly to Washington D.C.

Book the best Washington D.C. fare with no extra fees

Flight deals from London to Washington D.C.

Looking for a cheap last-minute deal or the best return flight from London Airport to Washington D.C.? If you want to travel next month, return fares start from C$836. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from London to Washington D.C.

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London to Washington D.C. flights are currently cheapest in July.

London to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight foundC$346
Cheapest month to flyJuly

Finding cheap flights from London to Washington D.C.: Frequently asked questions

There are 5 airports in Washington D.C.: Washington Ronald Reagan, Camp Springs Andrews AFB, Washington Dulles, Baltimore Washington International, and Manassas.
The best price we found for a return flight from London to Washington D.C. is C$632. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from London to Washington D.C.. But we found flights with one or more stops from C$632.
As of June 2026, there are no flights flying from London to Washington D.C..
The cheapest month to fly from London to Washington D.C. is usually July.
If you're flying from London Airport, the cheapest airport near Washington D.C. is Washington Ronald Reagan – which is 5.5 km away from the centre of Washington D.C.. We've found flights into this airport from C$632.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Airport to Washington D.C. on Saturday, July 25, 2026.
No airlines currently offer direct flights between London Airport and Washington D.C.. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Washington D.C. but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.
In June, the average temperature is usually around 22°C. July is typically the warmest month in Washington D.C., when it usually averages around 31°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -4°C. The rainiest month is September.
Currently, Air Canada offers the cheapest flight tickets to Washington D.C..

Travelling from London International Airport (YXU) to Washington DC: what you need to know

  • Washington DC and London (where London International Airport is located) share the UTC-4 timezone. That means you won't have to adjust your watch once you arrive.

  • For a stress-free journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This will give you plenty of time to board your flight from YXU to Washington DC.

  • You'll likely experience bigger queues in popular months like August and other peak periods. Arriving up to fours hours ahead of international flights and two hours for a domestic departure is a smart move.

  • You don't need a visa for United States if you have a passport from Canada and are visiting for tourism purposes. Visa and travel documentation requirements are subject to change. So before reserving your flight tickets from London International Airport to Washington DC, be sure to check with your airline and your destination country's local embassy or consulate for the latest information.

  • YXU is about 11 kilometres from central London. If you're ride-sharing, catching a cab or driving from the centre, it'll take 19 minutes or so to get there, depending on the traffic. If you're taking public transport, expect the trip time to be approximately 53 minutes.

  • Need a handy hotel near YXU? If you're boarding an early flight from London International Airport to Washington DC, these stays will put you moments from your departure lounge:

How to find the cheapest flights from London International Airport (YXU) to Washington DC

  • C$346 is the cheapest price we've found for a one-way ticket from London International Airport to Washington DC. For a return flight on this route, the best price is C$632. Depending on when you want to go and the availability, these fares could change.

  • Don't leave things to the last moment. You're more likely to get cheap tickets from YXU to Washington DC if you book ahead. Airlines often offer some great early bird rates.

  • Finding cheap tickets from London International Airport to Washington DC is more likely if you can be flexible with your travel plans. Check out the 'Whole month' function to show the best prices across every month and bag a great deal.

  • Locking in a cheap ticket from YXU to Washington DC is a piece of cake with Price Alerts. All you need to do is create one of these automatic alerts and we'll get in touch as soon as the price has dropped.

  • Take advantage of the filters to find your ideal trip. To see the 'Fastest,' 'Best' or 'Cheapest' flights from London International Airport to Washington DC, use the 'Sort by' tool. You can also filter results by airline, departure and arrival times, and journey duration.

Airports in Washington DC

Ronald Reagan National Airport (DCA)

  • Ronald Reagan National Airport (DCA) to the centre of Washington DC is around 16 minutes by car. It's approximately 8 kilometres away.

  • Travelling to the centre on public transport takes around 43 minutes.

  • If you're arriving on a late flight from London International Airport to Washington DC, nothing beats the convenience of staying close to the terminal. Collect your bags from the carousel and then be showered and resting soon after at one of these hotels near DCA:

Washington Dulles International Airport (IAD)

Best time to go to Washington DC

  • July is the most popular month to hop on a flight from London International Airport to Washington DC while May is the quietest. To work out the best time to visit Washington DC, consider whether you prefer a lively vibe or a quieter pace.

  • Lock in your flight from London International Airport to Washington DC for July to visit the city during its warmest month. Expect temperatures to range from 19ºC to 33ºC.

  • Search for cheap flights from YXU to Washington DC in January if you like cooler conditions. Temperatures are at their lowest then, ranging between -6ºC and 10ºC on average.

More about Washington DC

  • After locking in your flight from London International Airport to Washington DC, think about where to rest your head in this city. Make one of these options your base for exploring Washington DC:

  • White House Historical Association and The White House are just the start of the major attractions to add to your Washington DC must-do list. Keep the sightseeing going at National Mall.

Complete your Washington DC trip with a car rental

  • Finding you a cheap flight from London International Airport to Washington DC isn't the only thing we're good at. Check out our car rentals in Washington DC and have more freedom to explore. We search for deals from trusted car rental companies and put them all in one place. You can instantly compare offers and then book with no fees.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.