₩526,700 Cheap Flights from Washington (IAD) to London (LON)

View ₩526,700 flight on Wed, Oct 1, 2025Opens in a new window

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 ₩526,700 for one-way flights and ₩709,000 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Virgin Atlantic
Tue, Sep 9 - Tue, Sep 16
IAD
Washington
LHR
London
₩709,000 Roundtrip, found 4 days ago
₩709,000
Roundtrip
found 4 days ago
Select Virgin Atlantic flight, departing Tue, Sep 9 from Washington to London, returning Tue, Sep 16, priced at ₩709,000 found 4 days ago
Delta
Tue, Sep 9 - Tue, Sep 16
IAD
Washington
LHR
London
₩709,000 Roundtrip, found 4 days ago
₩709,000
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Sep 9 from Washington to London, returning Tue, Sep 16, priced at ₩709,000 found 4 days ago
United
Tue, Sep 9 - Tue, Sep 16
IAD
Washington
LHR
London
₩709,100 Roundtrip, found 4 days ago
₩709,100
Roundtrip
found 4 days ago
Select United flight, departing Tue, Sep 9 from Washington to London, returning Tue, Sep 16, priced at ₩709,100 found 4 days ago
Air Canada
Tue, Sep 9 - Tue, Sep 16
IAD
Washington
LHR
London
₩709,100 Roundtrip, found 4 days ago
₩709,100
Roundtrip
found 4 days ago
Select Air Canada flight, departing Tue, Sep 9 from Washington to London, returning Tue, Sep 16, priced at ₩709,100 found 4 days ago
Air Canada
Tue, Sep 9 - Tue, Sep 16
IAD
Washington
LHR
London
₩716,800 Roundtrip, found 4 days ago
₩716,800
Roundtrip
found 4 days ago
Select Air Canada flight, departing Tue, Sep 9 from Washington to London, returning Tue, Sep 16, priced at ₩716,800 found 4 days ago
Swiss International Air Lines
Tue, Sep 9 - Tue, Sep 16
IAD
Washington
LHR
London
₩737,900 Roundtrip, found 4 days ago
₩737,900
Roundtrip
found 4 days ago
Select Swiss International Air Lines flight, departing Tue, Sep 9 from Washington to London, returning Tue, Sep 16, priced at ₩737,900 found 4 days ago
British Airways
Tue, Sep 9 - Tue, Sep 16
IAD
Washington
LHR
London
₩747,400 Roundtrip, found 4 days ago
₩747,400
Roundtrip
found 4 days ago
Select British Airways flight, departing Tue, Sep 9 from Washington to London, returning Tue, Sep 16, priced at ₩747,400 found 4 days ago
Swiss International Air Lines
Tue, Sep 9 - Tue, Sep 16
IAD
Washington
LCY
London
₩772,100 Roundtrip, found 4 days ago
₩772,100
Roundtrip
found 4 days ago
Select Swiss International Air Lines flight, departing Tue, Sep 9 from Washington to London, returning Tue, Sep 16, priced at ₩772,100 found 4 days ago
Air France
Tue, Sep 9 - Tue, Sep 16
IAD
Washington
LHR
London
₩780,400 Roundtrip, found 4 days ago
₩780,400
Roundtrip
found 4 days ago
Select Air France flight, departing Tue, Sep 9 from Washington to London, returning Tue, Sep 16, priced at ₩780,400 found 4 days ago
KLM
Tue, Sep 9 - Tue, Sep 16
IAD
Washington
LHR
London
₩803,812 Roundtrip, found 4 days ago
₩803,812
Roundtrip
found 4 days ago
Select KLM flight, departing Tue, Sep 9 from Washington to London, returning Tue, Sep 16, priced at ₩803,812 found 4 days ago

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

March is typically the cheapest month to fly

From ₩522,833 - ₩1,033,248 per traveler.

Graph displaying average flight prices per month

Flights from Washington (IAD) to London (LHR)
Origin airport
Washington Dulles Intl.
Destination airport
Heathrow
Roundtrip price
₩709,000
Distance
5866 km

Chantilly to England Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Chantilly to England will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring England.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with IAD to LON flights that won’t make your bank account wince. Ready to temporarily leave behind Chantilly for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to LON with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Frequently asked questions

How much is a flight from IAD to London (LON-All Airports)?
If you're traveling from Washington Dulles Intl. Airport (IAD) to London (LON-All Airports), round-trip journeys start from ₩709,000. 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 kilometers, 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 travelers. 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.

Explore a world of travel with Expedia

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London

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₩709,000
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