Cheap Flights from London to Washington Dulles

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Flight deals from London to Washington Dulles Airport

Looking for a cheap last-minute deal or the best return flight from London to Washington Dulles Airport? If you want to travel next month, return fares start from R 7,068. Find the lowest prices on one-way and return tickets right here.

Washington D.C..R 5,842 per passenger.Departing Fri, 8 May.One-way flight with Norse Atlantic Airways (UK).Outbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Fri, 8 May, arriving in Washington Dulles.Price includes taxes and charges.From R 5,842, select.

Washington D.C..R 6,257 per passenger.Departing Wed, 29 Apr.One-way flight with Ryanair.Outbound indirect flight with Ryanair, departs from London Luton on Wed, 29 Apr, arriving in Washington Dulles.Price includes taxes and charges.From R 6,257, select.

Washington D.C..R 6,388 per passenger.Departing Thu, 3 Sep.One-way flight with Norse Atlantic Airways (UK).Outbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Thu, 3 Sep, arriving in Washington Dulles.Price includes taxes and charges.From R 6,388, select.

Washington D.C..R 6,577 per passenger.Departing Fri, 5 Jun.One-way flight with Norse Atlantic Airways (UK).Outbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Fri, 5 Jun, arriving in Washington Dulles.Price includes taxes and charges.From R 6,577, select.

Washington D.C..R 6,726 per passenger.Departing Tue, 20 Oct.One-way flight with Wizz Air UK.Outbound indirect flight with Wizz Air UK, departs from London Gatwick on Tue, 20 Oct, arriving in Washington Dulles.Price includes taxes and charges.From R 6,726, select.

Washington D.C..R 6,747 per passenger.Departing Fri, 28 Aug.One-way flight with Norse Atlantic Airways (UK).Outbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Fri, 28 Aug, arriving in Washington Dulles.Price includes taxes and charges.From R 6,747, select.

Washington D.C..R 6,747 per passenger.Departing Wed, 25 Nov.One-way flight with Wizz Air UK.Outbound indirect flight with Wizz Air UK, departs from London Gatwick on Wed, 25 Nov, arriving in Washington Dulles.Price includes taxes and charges.From R 6,747, select.

Washington D.C..R 7,161 per passenger.Departing Thu, 3 Dec.One-way flight with Wizz Air UK.Outbound indirect flight with Wizz Air UK, departs from London Luton on Thu, 3 Dec, arriving in Washington Dulles.Price includes taxes and charges.From R 7,161, select.

Washington D.C..R 7,597 per passenger.Departing Thu, 11 Feb.One-way flight with Wizz Air UK.Outbound indirect flight with Wizz Air UK, departs from London Luton on Thu, 11 Feb, arriving in Washington Dulles.Price includes taxes and charges.From R 7,597, select.

Washington D.C..R 7,699 per passenger.Departing Tue, 7 Jul.One-way flight with Ryanair.Outbound indirect flight with Ryanair, departs from London Stansted on Tue, 7 Jul, arriving in Washington Dulles.Price includes taxes and charges.From R 7,699, select.

Washington D.C..R 7,790 per passenger.Departing Mon, 1 Mar.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from London Heathrow on Mon, 1 Mar, arriving in Washington Dulles.Price includes taxes and charges.From R 7,790, select.

Washington D.C..R 8,191 per passenger.Departing Sun, 3 Jan.One-way flight with Austrian Airlines.Outbound indirect flight with Austrian Airlines, departs from London Heathrow on Sun, 3 Jan, arriving in Washington Dulles.Price includes taxes and charges.From R 8,191, select.

Washington D.C..R 8,615 per passenger.Departing Mon, 23 Mar.One-way flight with Ryanair.Outbound indirect flight with Ryanair, departs from London Stansted on Mon, 23 Mar, arriving in Washington Dulles.Price includes taxes and charges.From R 8,615, select.

Washington D.C..R 10,290 per passenger.Departing Wed, 29 Apr.One-way flight with Lufthansa.Outbound direct flight with Lufthansa departs from London Heathrow on Wed, 29 Apr, arriving in Washington Dulles.Price includes taxes and charges.From R 10,290, select.

Washington D.C..R 10,475 per passenger.Departing Wed, 23 Sep.One-way flight with Finnair.Outbound direct flight with Finnair departs from London Heathrow on Wed, 23 Sep, arriving in Washington Dulles.Price includes taxes and charges.From R 10,475, select.

Washington D.C..R 10,512 per passenger.Departing Wed, 25 Nov.One-way flight with Finnair.Outbound direct flight with Finnair departs from London Heathrow on Wed, 25 Nov, arriving in Washington Dulles.Price includes taxes and charges.From R 10,512, select.

Find the cheapest month to fly from London to Washington Dulles

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

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Direct flights from London to Washington Dulles

London to Washington Dulles: Alternative routes

Compare routes from London to Washington D.C. below. You may find an airport to fly into that's cheaper, faster, or easier than Washington Dulles.

London to Washington D.C.: Flight information

The things to know before you go.

Cheapest flight found	R 5,842
Cheapest month to fly	May
Average flight time	8 hrs, 28 mins
Most popular airline	American Airlines
Average flights per week	222

Finding cheap flights from London to Washington Dulles: Frequently asked questions

How much are return flights from London to Washington Dulles?

The best price we found for a return flight from London to Washington Dulles is R 7,068. 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 London to Washington Dulles?

8 hours and 28 minutes is the average flight time from London to Washington Dulles.

Which airlines fly direct from London to Washington Dulles?

American Airlines, British Airways and KLM fly direct from London to Washington Dulles.

How many flights are there a week from London to Washington Dulles?

As of March 2026, there are 222 flights per week flying from London to Washington Dulles.

When is the cheapest time to fly from London to Washington Dulles?

The cheapest month to fly from London to Washington Dulles is usually April.

Which upcoming date is cheapest to fly from London to Washington Dulles Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from London to Washington Dulles Airport on Tuesday, 21 April 2026.

Can I get a direct flight from London to Washington Dulles Airport?

Yes – the average flight time is 8 hours and 28 minutes.

How can I find the best flight deal to Washington Dulles?

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 Dulles 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 Washington D.C.?

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.

Flying from London to Washington Dulles International Airport (IAD): What you need to know

London Heathrow Airport (LHR) is London's main airport. Check out your options for reserving a flight from London to Washington Dulles International Airport (IAD) leaving from here.
8 hours 25 minutes is the average journey time for a direct London to Washington Dulles International Airport flight.
The timezone in Washington DC is UTC-5, which is five hours behind London. Washington Dulles International Airport is located in Washington DC.
With 38 direct flights a week between the two airports, London Heathrow Airport (LHR) to Washington Dulles International Airport (IAD) is the busiest route. United Airlines operates the earliest flight at 10:25am. If you'd like to get more out of your day before flying, the last flight from LHR to IAD is with British Airways at 5:05pm.
Your flight from London to IAD won't wait if you're running late, so don't forget to check in on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.
Flying during a popular month such as July? Public holidays and other popular periods can mean longer lines at check-in and security. Play it safe and get there up to four hours before an international flight and two hours before a domestic departure.

Airports in London

London Heathrow Airport (LHR)

Reach your destination without the detour from London Heathrow Airport (LHR). Nonstop flights from London to Washington Dulles International Airport (IAD) can be booked from here.
At LHR, there's a variety of airlines operating direct flights from London to Washington Dulles International Airport, including:
British Airways is the most frequently chosen airline for flights from LHR to IAD.
The carrier with the most consistent on-time arrivals rate on this route is Virgin Atlantic.
Think about adding a stopover to find cheap flights from London to IAD. Simply uncheck 'Direct flights only' when browsing departures from London Heathrow Airport (LHR). Pause your trip (and maybe pocket some savings) with a stop at one of these airports:
- Amsterdam Schiphol Airport (AMS)
- New York John F. Kennedy International Airport (JFK)
- Dublin Airport (DUB)
Located around 24 kilometres from the centre of London, LHR can be reached in about 45 minutes by car, depending on traffic. The journey by public transport takes roughly 25 minutes.
Want a stress-free start to your travels? Stay near London Heathrow Airport. Whether you're boarding an early flight from London to Washington Dulles International Airport or aren't a fan of being rushed, these hotels offer the perfect solution:
When it comes to London Heathrow Airport's on-time performance, 78% of flights meet their scheduled arrival time.

London Gatwick Airport (LGW)

Make the most of your holiday with a stopover on your flight from London to Washington Dulles International Airport. Check out these connections between London Gatwick Airport and IAD:
- Amsterdam Schiphol Airport (AMS)
- Dublin Airport (DUB)
- Montreal-Trudeau International Airport (YUL)
LGW is about 48 kilometres from central London. It takes 1 hour 5 minutes or so to get to the airport in a car from the city centre. Public transport takes approximately 1 hour 20 minutes.
Got an early start? Think about staying at one of these hotels near London Gatwick Airport the day before your London to IAD flight:
The majority of flights that leave London Gatwick Airport get to their destination right on cue. It maintains a high on-time performance rate of 82%.

London Stansted Airport (STN)

Searching for a plane ticket from London to Washington Dulles International Airport (IAD) with one or more stops can offer you more departure time choices on top of cheaper fares. When leaving from London Stansted Airport (STN), here are a few places you can detour to on your way to IAD:
- Amsterdam Schiphol Airport (AMS)
- Dublin Airport (DUB)
- Keflavik Airport (KEF)
From the centre of London, STN is around 56 kilometres away. It'll take you roughly 1 hour 5 minutes to get to the airport by car and 45 minutes or so if you use public transport.
Make catching an early London to Washington Dulles International Airport flight one of the easiest parts of your trip. Book a room at one of these hotels close to London Stansted Airport and get to your gate with time to spare:
With 80% of its departing flights arriving as planned, STN is a reliable starting point for any journey.

About Washington Dulles International Airport (IAD)

Book a hotel near IAD if you have a late flight from London to Washington Dulles International Airport. Choose one of these options and call it a night faster:
Lock in the best possible rate by booking your ride around one week ahead of your London to Washington Dulles International Airport flight.
You'll find IAD at 1 Saarinen Circle.

Getting from Washington Dulles International Airport (IAD) to central Washington DC

Central Washington DC is around 40 kilometres from Washington Dulles International Airport and takes about 45 minutes to reach by car. See what your options are for heading into the city, whether that's with a car hire, taxi or ride-share.
Travelling on public transport will take you roughly 1 hour 10 minutes.

How to find the cheapest flights from London to Washington Dulles International Airport (IAD)

R 5,842 is the best price for a one-way ticket from London to Washington Dulles International Airport. A return flight starts at R 7,068. These prices can change based on demand and availability.
To find cheap flights from London to IAD, book early. Airlines tend to offer lower prices when flights are first released.
If you can be flexible with your travel dates, use the 'Whole month' tool. It'll show you the lowest price in each month when searching for your London to Washington Dulles International Airport ticket.
Snapping up a cheap plane ticket from London to IAD is a piece of cake with Price Alerts. Simply set up one of these automatic alerts and we'll notify you when the price has dropped.
Hunt down a great price on a flight from London to Washington Dulles International Airport with the help of the filters. Choose your ideal departure and arrival times, number of stops and airlines. You can also sort your results by 'Fastest,' 'Cheapest' or 'Best.'

The best time to fly from London to Washington Dulles International Airport (IAD)

It's time to figure out when to book your flight from London to Washington Dulles International Airport (IAD). June is the peak month for travel to Washington DC. If you like your getaways a little more chill, think about going in February.
The warmest month in Washington DC is July, with temperatures ranging between 19ºC (66ºF) and 33ºC (91ºF). Book your London to IAD plane ticket then if that's your definition of good weather.
Look for cheap tickets from London to Washington Dulles International Airport in January if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between -6ºC (21ºF) and 10ºC (50ºF).

More about Washington DC

When it comes to looking for somewhere to lay your head, you'll find the best places to stay in Washington DC right here. Check out these options as soon as you've locked in your flight from London to Washington Dulles International Airport:
Your visit to Washington DC should come with a side of sightseeing. Highlights that belong on your itinerary include Lincoln Memorial, The White House and Smithsonian National Museum of Natural History.

Explore more of the United States

Washington DC has plenty going for it, but there are so many other parts of the United States waiting to be discovered. Around 225 kilometres northeast of Washington DC, a visit to Philadelphia will keep you busy. Don't miss top attractions like Independence Hall, Liberty Bell and Philadelphia Museum of Art.
Around 274 kilometres southeast of Washington DC, Virginia Beach is another favourite stop in the United States. No visit is complete without checking out Virginia Beach Boardwalk, Resort Beach and Neptune's Park.