£161 Cheap Flights from Washington (IAD) to London (LON)

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Cheap Flights from Washington (IAD) to London (LON)

Prices were available within the past 7 days and start at £161 for one-way flights and £293 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fly Play
Sat, 16 Nov - Wed, 20 Nov
IAD
Washington
STN
London
£293 Return, found 3 days ago
£293
Return
found 3 days ago
Select Fly Play flight, departing Sat, 16 Nov from Washington to London, returning Wed, 20 Nov, priced at £293 found 3 days ago
TAP Portugal
Sun, 22 Sep - Tue, 1 Oct
IAD
Washington
LGW
London
£429 Return, found 3 days ago
£429
Return
found 3 days ago
Select TAP Portugal flight, departing Sun, 22 Sep from Washington to London, returning Tue, 1 Oct, priced at £429 found 3 days ago
TAP Portugal
Thu, 31 Oct - Wed, 6 Nov
IAD
Washington
LHR
London
£429 Return, found 6 hours ago
£429
Return
found 6 hours ago
Select TAP Portugal flight, departing Thu, 31 Oct from Washington to London, returning Wed, 6 Nov, priced at £429 found 6 hours ago
Virgin Atlantic
Tue, 21 May - Wed, 29 May
IAD
Washington
LHR
London
£434 Return, found 6 days ago
£434
Return
found 6 days ago
Select Virgin Atlantic flight, departing Tue, 21 May from Washington to London, returning Wed, 29 May, priced at £434 found 6 days ago
Virgin Atlantic
Tue, 21 May - Wed, 29 May
IAD
Washington
LHR
London
£437 Return, found 6 days ago
£437
Return
found 6 days ago
Select Virgin Atlantic flight, departing Tue, 21 May from Washington to London, returning Wed, 29 May, priced at £437 found 6 days ago
Scandinavian Airlines
Wed, 6 Nov - Wed, 13 Nov
IAD
Washington
LHR
London
£466 Return, found 7 hours ago
£466
Return
found 7 hours ago
Select Scandinavian Airlines flight, departing Wed, 6 Nov from Washington to London, returning Wed, 13 Nov, priced at £466 found 7 hours ago
Icelandair
Tue, 5 Nov - Tue, 12 Nov
IAD
Washington
LGW
London
£479 Return, found 6 days ago
£479
Return
found 6 days ago
Select Icelandair flight, departing Tue, 5 Nov from Washington to London, returning Tue, 12 Nov, priced at £479 found 6 days ago
Iberia
Sun, 22 Sep - Tue, 1 Oct
IAD
Washington
LHR
London
£485 Return, found 16 hours ago
£485
Return
found 16 hours ago
Select Iberia flight, departing Sun, 22 Sep from Washington to London, returning Tue, 1 Oct, priced at £485 found 16 hours ago
British Airways
Sun, 22 Sep - Tue, 1 Oct
IAD
Washington
LGW
London
£495 Return, found 3 days ago
£495
Return
found 3 days ago
Select British Airways flight, departing Sun, 22 Sep from Washington to London, returning Tue, 1 Oct, priced at £495 found 3 days ago
United
Sun, 22 Sep - Fri, 4 Oct
IAD
Washington
LHR
London
£496 Return, found 6 days ago
£496
Return
found 6 days ago
Select United flight, departing Sun, 22 Sep from Washington to London, returning Fri, 4 Oct, priced at £496 found 6 days ago
Flight from Washington to London route information
Origin airport
Washington Dulles Intl.
Destination airport
Stansted
Return price
£293
Distance
5898 km

Compare flights from Washington to London easily and book in confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Washington to London. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to LON-All Airports in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Washington Dulles Intl. to LON-All Airports.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Washington Dulles Intl. (IAD) to LON-All Airports (LON) 

The easiest way to view the best deals on flights from Washington to London today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Washington Dulles Intl. to LON-All Airports start at just £293 and range up to £496.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Washington and London
  • booking your flight during November, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Washington to London flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Washington Dulles Intl. to LON-All Airports for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from IAD to London (LON-All Airports)?
If you’re travelling from Washington Dulles Intl. Airport (IAD) to London (LON-All Airports), round-trip journeys start from £293. This figure is based on fares listed within the last 7 days on Expedia for flights departing within the next year, so don’t let a good deal slip through your fingers. Book today and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from IAD to London (LON-All Airports)?
This varies between airlines, as each has its own terms and conditions. Head to the Customer Service Portal, where there are easy-to-follow instructions on how to cancel your flight online.
How do I find cheap flights from Dulles Intl. Airport to London (LON-All Airports) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for Dulles Intl. Airport to London (LON-All Airports) flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from IAD to London (LON-All Airports)?
The distance is around 5,900 kilometres, so fill your carry-on luggage with whatever you need to make your journey comfortable. Wondering what to take on board your Chantilly to England flight? A travel pillow, earplugs and a sleep mask are among the essentials.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to London (LON-All Airports)?
United Airlines (UA) is the number one choice for many travellers. It offers 60 flights from Dulles Intl. Airport to London (LON-All Airports) each month. If you want more options, check out the fares from British Airways (BA). This airlines operates 60 monthly flights between these airports.
Are Dulles Intl. Airport to London (LON-All Airports) flight tickets cheaper when they're purchased at the last minute?
It is possible to pick up great last-minute deals from IAD to London (LON-All Airports), but it can also be hit-or-miss. As many airlines release seats up to a year in advance, it’s worth keeping an eye on fares early and being ready to book when you spot a good bargain. Expedia compares carrier prices and updates flight deals regularly, so you can rest easy knowing you’re always getting the latest offers.
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