AED2,575 Cheap Flights from London (LHR) to Washington (IAD)

View AED2,575 flight on Mon, 25 May 2026Opens in a new window

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Cheap Flights from London to Washington (LHR-IAD)

Prices were available within the past 7 days and start at AED2,575 for one-way flights and AED5,624 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wednesday, 20 May, 2026 - Monday, 25 May, 2026
LHR
London
IAD
Washington
AED5,624 Roundtrip, found 5 days ago
AED5,624
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wednesday, 20 May, 2026 from London to Washington, returning Monday, 25 May, 2026, priced at AED5,624 found 5 days ago

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

April is typically the cheapest month to fly

From AED 1,808 - AED 5,030 per traveler.

Frequently asked questions

How long does it take to fly from LHR to Washington Dulles Intl. Airport (IAD)?
A direct flight with United Airlines takes about 8 hours and 5 minutes. Jump on the 4:40PM flight from London Heathrow and reach Dulles Intl. Airport at 7:45PM. Pick up a fabulous deal on this route when you book with Expedia.
Is it cheaper to buy a plane ticket from Heathrow Airport to IAD last minute?
Being spontaneous is a wonderful way to explore the globe, but it isn't necessarily the ideal way to find a cheap plane ticket. It's better to book your London Heathrow to Dulles Intl. Airport trip well in advance rather than leaving it to the last minute. Based on flight pricing and demand studies in 2022, we have found that the best time to book domestic flights is between 28 – 35 days ahead of the departure date, and international flights three to four months in advance. Leave your spontaneous side for when you get to your destination!
What airline has the least delays from Heathrow Airport to Washington Dulles Intl. Airport (IAD)?
Depart with United Airlines from Heathrow Airport (LHR) to Dulles Intl. Airport and touch down at the time on your ticket. This carrier takes first place on this route, with an 93% on-time rate. If your flight experiences a delay, the free Expedia App is the perfect way to stay updated. Download it onto your device and get immediate trip updates, from flight delays to any gate number changes.
What airports do you fly into for Washington from London?
From London, you can get to Washington via Washington Dulles Intl. Airport (IAD), Ronald Reagan Washington National Airport (DCA) and Baltimore Washington Intl. Thurgood Marshall Airport (BWI). Be sure to check which hub is the right option for you before making your decision. If you opt for Washington Dulles Intl. Airport (IAD), it's approximately 40 kilometers west of the center of the city. Use the dough you save when booking your ticket with Expedia to explore the city's popular sights, such as White House and United States Capitol.
What are the most popular departure times for flights from Heathrow Airport to IAD?
Between 12:00 PM - 1:00 PM is when you'll find the most United Airlines flights going from Heathrow Airport to IAD. Our handy tip? Choose a flight that departs in the morning. With air traffic yet to build up around airports, your chances of boarding a delay-free flight are higher.
Can I change the date of my flight from Heathrow Airport to Dulles Intl. Airport?
We know plans can get upended, so Expedia is here to help make amending your flight as easy as possible. To start, find your Heathrow Airport to IAD itinerary through the Expedia Trips portal and browse the ticket rules about change fees or other charges. If you purchased your ticket in the last 24 hours, some carriers allow you to cancel at no cost and book new flights. If you booked more than 24 hours ago, connect with us through our Customer Service portal to see how we can assist.

Travel information

Origin airport
Heathrow
Destination airport
Washington Dulles Intl.
Roundtrip price
AED5,624
Distance
5866 km
Average flight time
3 hours 16 mins

Book with confidence

London to Washington Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from London to Washington offer the perfect respite. Not only does exploring Washington provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from London to Washington may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from to today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of Washington are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to Washington more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Washington is AED2,575 now!

London to Washington Flights