Cheap Flights from Washington (IAD) to London (LON) from AU$376

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

Prices were available within the past 7 days and start at AU$376 for one-way flights and AU$825 for round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Virgin Atlantic
Mon., 6 May - Wed., 15 May
IAD
Washington
LHR
London
AU$825 Return, found 3 days ago
AU$825
Return
found 3 days ago
Select Virgin Atlantic flight, departing Mon., 6 May from Washington to London, returning Wed., 15 May, priced at AU$825 found 3 days ago
Delta
Mon., 6 May - Wed., 15 May
IAD
Washington
LHR
London
AU$828 Return, found 3 days ago
AU$828
Return
found 3 days ago
Select Delta flight, departing Mon., 6 May from Washington to London, returning Wed., 15 May, priced at AU$828 found 3 days ago
Virgin Atlantic
Mon., 6 May - Wed., 15 May
IAD
Washington
LHR
London
AU$835 Return, found 3 days ago
AU$835
Return
found 3 days ago
Select Virgin Atlantic flight, departing Mon., 6 May from Washington to London, returning Wed., 15 May, priced at AU$835 found 3 days ago
Air France
Mon., 6 May - Wed., 15 May
IAD
Washington
LHR
London
AU$896 Return, found 3 days ago
AU$896
Return
found 3 days ago
Select Air France flight, departing Mon., 6 May from Washington to London, returning Wed., 15 May, priced at AU$896 found 3 days ago
KLM
Mon., 6 May - Wed., 15 May
IAD
Washington
LHR
London
AU$898 Return, found 3 days ago
AU$898
Return
found 3 days ago
Select KLM flight, departing Mon., 6 May from Washington to London, returning Wed., 15 May, priced at AU$898 found 3 days ago
TAP Portugal
Tue., 11 Feb. - Sat., 15 Feb.
IAD
Washington
LHR
London
AU$933 Return, found 3 days ago
AU$933
Return
found 3 days ago
Select TAP Portugal flight, departing Tue., 11 Feb. from Washington to London, returning Sat., 15 Feb., priced at AU$933 found 3 days ago
Icelandair
Tue., 30 Apr. - Tue., 21 May
IAD
Washington
LHR
London
AU$942 Return, found 4 days ago
AU$942
Return
found 4 days ago
Select Icelandair flight, departing Tue., 30 Apr. from Washington to London, returning Tue., 21 May, priced at AU$942 found 4 days ago
Icelandair
Mon., 26 Aug. - Mon., 2 Sep.
IAD
Washington
LGW
London
AU$948 Return, found 5 days ago
AU$948
Return
found 5 days ago
Select Icelandair flight, departing Mon., 26 Aug. from Washington to London, returning Mon., 2 Sep., priced at AU$948 found 5 days ago
Lufthansa
Mon., 6 May - Wed., 15 May
IAD
Washington
LHR
London
AU$1,023 Return, found 3 days ago
AU$1,023
Return
found 3 days ago
Select Lufthansa flight, departing Mon., 6 May from Washington to London, returning Wed., 15 May, priced at AU$1,023 found 3 days ago
ITA Airways
Mon., 26 Aug. - Mon., 2 Sep.
IAD
Washington
LGW
London
AU$1,029 Return, found 5 days ago
AU$1,029
Return
found 5 days ago
Select ITA Airways flight, departing Mon., 26 Aug. from Washington to London, returning Mon., 2 Sep., priced at AU$1,029 found 5 days ago
Flight from Washington to London route information
Origin airport
Washington Dulles Intl.
Destination airport
Heathrow
Return price
AU$825
Distance
5866 km

Your quick guide to flights from Washington to London

Pick up great flights from Washington to London

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Washington to London. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Washington to London that take around hours.

Find cheap flights from Washington to London

From the great flight deals with prices currently ranging from AU$825 to AU$1,029, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Washington to London around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to London is normally in May.

Reasons to book your flight from Washington to London with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Washington to London across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to London right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

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 AU$825. 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.
London Flight Deals

London

Washington to Heathrow
AU$824.80
*Available to Expedia members.