S$486 Cheap Flights from Washington to London

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Popular airlines from Washington Dulles Intl. Airport (IAD) to London

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Cheap Flights from Washington to London (IAD-LON)

Prices were available within the past 7 days and start at S$486 for one-way flights and S$782 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, 18 Mar - Wed, 25 Mar
IAD
Washington
LHR
London
S$782 Return, found 1 day ago
S$782
Return
found 1 day ago
Select United flight, departing Wed, 18 Mar from Washington to London, returning Wed, 25 Mar, priced at S$782 found 1 day ago
United
Sat, 28 Feb - Mon, 9 Mar
IAD
Washington
LHR
London
S$783 Return, found 4 days ago
S$783
Return
found 4 days ago
Select United flight, departing Sat, 28 Feb from Washington to London, returning Mon, 9 Mar, priced at S$783 found 4 days ago
United
Sun, 15 Mar - Mon, 23 Mar
IAD
Washington
LHR
London
S$784 Return, found 5 days ago
S$784
Return
found 5 days ago
Select United flight, departing Sun, 15 Mar from Washington to London, returning Mon, 23 Mar, priced at S$784 found 5 days ago
Air Canada
Wed, 18 Mar - Wed, 25 Mar
IAD
Washington
LHR
London
S$792 Return, found 1 day ago
S$792
Return
found 1 day ago
Select Air Canada flight, departing Wed, 18 Mar from Washington to London, returning Wed, 25 Mar, priced at S$792 found 1 day ago
United
Wed, 18 Mar - Wed, 25 Mar
IAD
Washington
LHR
London
S$798 Return, found 1 day ago
S$798
Return
found 1 day ago
Select United flight, departing Wed, 18 Mar from Washington to London, returning Wed, 25 Mar, priced at S$798 found 1 day ago
Virgin Atlantic
Sun, 15 Mar - Mon, 23 Mar
IAD
Washington
LHR
London
S$809 Return, found 5 days ago
S$809
Return
found 5 days ago
Select Virgin Atlantic flight, departing Sun, 15 Mar from Washington to London, returning Mon, 23 Mar, priced at S$809 found 5 days ago
Delta
Wed, 18 Mar - Wed, 25 Mar
IAD
Washington
LHR
London
S$817 Return, found 1 day ago
S$817
Return
found 1 day ago
Select Delta flight, departing Wed, 18 Mar from Washington to London, returning Wed, 25 Mar, priced at S$817 found 1 day ago
United
Wed, 18 Mar - Wed, 25 Mar
IAD
Washington
LHR
London
S$817 Return, found 1 day ago
S$817
Return
found 1 day ago
Select United flight, departing Wed, 18 Mar from Washington to London, returning Wed, 25 Mar, priced at S$817 found 1 day ago
Swiss International Air Lines
Sun, 15 Mar - Mon, 23 Mar
IAD
Washington
LHR
London
S$823 Return, found 5 days ago
S$823
Return
found 5 days ago
Select Swiss International Air Lines flight, departing Sun, 15 Mar from Washington to London, returning Mon, 23 Mar, priced at S$823 found 5 days ago
Air Canada
Wed, 18 Mar - Wed, 25 Mar
IAD
Washington
LHR
London
S$832 Return, found 1 day ago
S$832
Return
found 1 day ago
Select Air Canada flight, departing Wed, 18 Mar from Washington to London, returning Wed, 25 Mar, priced at S$832 found 1 day ago

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Find the cheapest month to fly from Washington (IAD) to London (LON)

March is typically the cheapest month to fly

From S$499 - S$1,052 per traveller.

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 S$782. 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.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Heathrow
Return price
S$781
Distance
5866 km

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Perfect flights from Washington to London

Your Journey from Washington to London

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Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Virgin Atlantic, Delta, United, Air Canada, British Airways, Air France, KLM, Swiss International Air Lines. Our selection of flights from Washington Dulles Intl. to LON-All Airports caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

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Experience the joy of finding cheap flights from Washington Dulles Intl. to LON-All Airports that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$486 and roundtrip prices from S$782*.
 

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Experience the Vibrant London

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Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Washington to London.
 

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*Note: Prices may vary based on availability and are subject to change.
Perfect flights from Washington to London

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