C$736 Cheap Flights from Washington D.C. (WASA) to London (LOND)

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Flight deals from Washington D.C. to London

Looking for a cheap last-minute deal or the best return flight from Washington D.C. to London? If you want to travel next month, return fares start from C$788. Find the lowest prices on one-way and return tickets right here.

London.C$289 per passenger.Departing Fri., Jul. 24.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Washington Dulles on Fri., Jul. 24, arriving in London Gatwick.Price includes taxes and charges.From C$289, select.

London.C$347 per passenger.Departing Thu., Jan. 21.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Baltimore Washington International on Thu., Jan. 21, arriving in London Gatwick.Price includes taxes and charges.From C$347, select.

London.C$347 per passenger.Departing Fri., Oct. 2.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Baltimore Washington International on Fri., Oct. 2, arriving in London Gatwick.Price includes taxes and charges.From C$347, select.

London.C$347 per passenger.Departing Fri., Nov. 6.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Baltimore Washington International on Fri., Nov. 6, arriving in London Heathrow.Price includes taxes and charges.From C$347, select.

London.C$347 per passenger.Departing Wed., Dec. 9.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Baltimore Washington International on Wed., Dec. 9, arriving in London Heathrow.Price includes taxes and charges.From C$347, select.

London.C$357 per passenger.Departing Thu., Aug. 20.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Baltimore Washington International on Thu., Aug. 20, arriving in London Gatwick.Price includes taxes and charges.From C$357, select.

London.C$357 per passenger.Departing Thu., Sep. 3.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Baltimore Washington International on Thu., Sep. 3, arriving in London Gatwick.Price includes taxes and charges.From C$357, select.

London.C$375 per passenger.Departing Tue., Feb. 9.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Baltimore Washington International on Tue., Feb. 9, arriving in London Gatwick.Price includes taxes and charges.From C$375, select.

London.C$439 per passenger.Departing Tue., Apr. 13.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Washington Dulles on Tue., Apr. 13, arriving in London Heathrow.Price includes taxes and charges.From C$439, select.

London.C$446 per passenger.Departing Tue., Mar. 9.One-way flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departs from Washington Dulles on Tue., Mar. 9, arriving in London Heathrow.Price includes taxes and charges.From C$446, select.

London.C$448 per passenger.Departing Tue., Mar. 9.One-way flight with Delta.Outbound direct flight with Delta departs from Washington Dulles on Tue., Mar. 9, arriving in London Heathrow.Price includes taxes and charges.From C$448, select.

London.C$448 per passenger.Departing Sun., Oct. 11.One-way flight with Iberia.Outbound direct flight with Iberia departs from Baltimore Washington International on Sun., Oct. 11, arriving in London Heathrow.Price includes taxes and charges.From C$448, select.

London.C$448 per passenger.Departing Tue., Jan. 12.One-way flight with Delta.Outbound direct flight with Delta departs from Washington Dulles on Tue., Jan. 12, arriving in London Heathrow.Price includes taxes and charges.From C$448, select.

London.C$448 per passenger.Departing Sun., Nov. 1.One-way flight with Air France.Outbound direct flight with Air France departs from Washington Dulles on Sun., Nov. 1, arriving in London Heathrow.Price includes taxes and charges.From C$448, select.

London.C$448 per passenger.Departing Tue., Sep. 29.One-way flight with Iberia.Outbound direct flight with Iberia departs from Washington Dulles on Tue., Sep. 29, arriving in London Heathrow.Price includes taxes and charges.From C$448, select.

London.C$448 per passenger.Departing Tue., Feb. 2.One-way flight with Air France.Outbound direct flight with Air France departs from Washington Dulles on Tue., Feb. 2, arriving in London Heathrow.Price includes taxes and charges.From C$448, select.

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

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

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Which airlines fly from Washington D.C. to London?

Alternative Washington D.C. to London routes

Looking for the cheapest, fastest or easiest route from Washington D.C. to London? You could fly into the following airports instead.

Washington D.C. to London: Flight information

The things to know before you go.

Cheapest flight found	C$289
Cheapest month to fly	July
Average flight time	7 hrs, 20 mins
Most popular airline	American Airlines
Average flights per week	249

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

How many airports are there in London?

There are 6 airports in London: London City, London Heathrow, London Gatwick, London Luton, London Stansted, and London Southend.

How much are return flights from Washington D.C. to London?

The best price we found for a return flight from Washington D.C. to London is C$736. 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.

How long does it take to fly from Washington D.C. to London?

7 hours and 20 minutes is the average flight time from Washington D.C. to London.

Which airlines fly direct from Washington D.C. to London?

American Airlines, British Airways and Lufthansa fly direct from Washington D.C. to London.

How many flights are there a week from Washington D.C. to London?

As of June 2026, there are 249 flights per week flying from Washington D.C. to London.

When is the cheapest time to fly from Washington D.C. to London?

The cheapest month to fly from Washington D.C. to London is usually July.

Which is the cheapest airport to fly into in London?

If you're flying from Washington D.C., the cheapest airport near London is London Gatwick – which is 40.3 km away from the centre of London. We've found flights into this airport from C$736.

Which upcoming date is cheapest to fly from Washington D.C. to London on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Washington D.C. to London on Wednesday, July 29, 2026.

Can I get a direct flight from Washington D.C. to London?

Yes – the average flight time is 7 hours and 20 minutes.

How can I get the best flight deal from Washington D.C. to London?

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 London 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.

When is the best time to book flights to London?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.

What’s the weather like in London?

In June, the average temperature is usually around 15°C. August is typically the warmest month in London, when it usually averages around 22°C. You can expect the least rain in March. The coldest month is January, with temperatures averaging 1°C. The rainiest month is October.

Which is the cheapest airline to fly from Washington D.C. to London with?

The cheapest airline that flies to London is Frontier Airlines. And the cheapest airline that flies to London Heathrow Airport is Austrian Airlines.

Flying from Washington DC to London: what you need to know

You can choose from multiple airports when organizing your flight from Washington DC to London. Explore your options for leaving Washington DC from Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD) and Baltimore/Wash International Thurgood Marshall Airport (BWI).
Land at London Heathrow Airport (LHR), London Gatwick Airport (LGW) or one of London's other terminals. They include Stansted Airport (STN), London Luton Airport (LTN) and London City Airport (LCY).
The average length of a direct flight from Washington DC to London is 7 hours 8 minutes. London's timezone is UTC+0, which makes London 4 hours ahead of Washington DC.
For hassle-free travel, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This will give you plenty of time to board your flight from Washington DC to London.
During popular months like July, it's best to get to the airport even earlier. Arrive two hours before domestic departures and four hours ahead of an international flight when you fly during a peak period in general.
You can visit United Kingdom for tourism purposes without a visa if you hold a passport from United States. But before booking your cheap flight from Washington DC to London, make sure you're up to date with the latest guidelines. Visa rules are subject to change, and you may need some documentation if your trip is for business or other reasons.

Flying from Washington DC

Ronald Reagan National Airport (DCA)

We make it a piece of cake to book a flight from Washington DC to London that includes a stopover. To see all the options leaving from Ronald Reagan National Airport, uncheck 'Direct flights only.' Next, pick a flight offering a stop long enough to explore your chosen city. Some popular stopovers include:
- John F. Kennedy International Airport (JFK)
- Logan International Airport (BOS)
- Newark Liberty International Airport (EWR)
Travelling from central Washington DC to DCA takes approximately 43 minutes by public transport. If you ride-share, drive or get a cab, you'll cover the 8 kilometres in 16 minutes or so, depending on traffic conditions.
After an easy start to your trip? Stay near Ronald Reagan National Airport. Whether you're catching an early flight from Washington DC to London or just don't like being rushed, these hotels are ideal:

Washington Dulles International Airport (IAD)

Consider organizing a direct flight from Washington DC to London departing Washington Dulles International Airport (IAD). Services from IAD will take you straight to London Heathrow Airport (LHR).
You can pick from a variety of airlines operating direct flights from Washington DC to London departing from IAD. Take off with any of these carriers and skip the layovers:
Split up your flight from Washington DC to London with a stop so you can freshen up or cross another place off your list. Popular stopovers between Ronald Reagan National Airport and London are:
- John F. Kennedy International Airport (JFK)
- Logan International Airport (BOS)
- Newark Liberty International Airport (EWR)
IAD is around 56 kilometres from central Washington DC. It'll take you 51 minutes or so to get to the airport by car from the city centre. Public transport takes approximately 3 hours and 26 minutes.
Want to enjoy an extra night away before catching your flight from Washington DC to London? Unwind in a hotel near Washington Dulles International Airport before your break officially begins. Stay at one of these accommodation options:

Arriving in London

London Heathrow Airport (LHR)

London Heathrow Airport (LHR) to the centre of London takes around 57 minutes by car. It's approximately 31 kilometres away.
It takes roughly 1 hour and 1 minute to get there using public transport.
Book a hotel near LHR if you have a late flight from Washington DC to London. Pick one of these accommodation options and avoid the hassle of a long transfer:

London Gatwick Airport (LGW)

London Gatwick Airport (LGW) is around 80 kilometres from central London. Once you've disembarked your flight from Washington DC to London, expect a drive time of approximately 1 hour and 19 minutes to get to the heart of the city.
The journey will take approximately 1 hour and 26 minutes on public transport.
There are some comfortable stays to call home for the night near LGW. Tuck yourself in after your flight from Washington DC to London at any of these well-located options:

How to find the cheapest flights from Washington DC to London

The cheapest price we've found for a one-way ticket from Washington DC to London is C$289. For a return flight on this route, the best price is C$736. Depending on when you book and the availability, these fares can change.
It's often best to book in advance if you're looking for cheap flights from Washington DC to London. That's because flight prices are based on demand, which tends to increase closer to the departure date.
Finding cheap flights from Washington DC to London is easy if you're flexible with your travel plans. Try using the 'Whole month' function to show the lowest prices across each month and land a great deal.
Sign into your online account or use the app to set up a Price Alert. We'll get in touch right away if there's a cheaper deal on this route. It's simple to do, and it'll save you time searching for cheap flights from Washington DC to London every day.
Tailor your flights using filters. Select your preferred departure and arrival times, airlines and total journey duration. You can also sort the results by 'Best,' 'Fastest' or 'Cheapest' flights from Washington DC to London.

Best time to go to London

It's time to plan your dates for your flight from Washington DC to London. July is the busiest month for a trip to London. If you like a more peaceful vibe, go in February.
The warmest month in London is July, with temperatures ranging between 11ºC and 26ºC. Book your flights from Washington DC to London in this month if this is the kind of weather you like.
Look for cheap flights from Washington DC to London in January if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between 0ºC and 9ºC on average.

More about London

Start your London trip off on the right foot by choosing the ideal place to stay. Once you've booked your flight from Washington DC to London, check out our selection of hotels including:
There are so many things to explore in this city it can be difficult to know where to begin. Big Ben, The British Museum and Buckingham Palace are top attractions which should be on any well-planned London itinerary.

Complete your London trip with a car rental

We use the same magic that helped you find your cheap flight from Washington DC to London to track down awesome deals on car rentals. Search for your ride in seconds and compare offers in one place. Plus you'll find all the info you need to drive in London, from the most popular car type to the average daily price.