NZ$611 Cheap Flights Washington to London (IAD-LHR)

View NZ$611 flight on Sun, 18 Jan 2026Opens in a new window

Popular airlines from Washington Dulles International Airport (IAD) to Heathrow Airport (LHR)

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

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

Icelandair
Sun, 18 Jan - Thu, 22 Jan
IAD
Washington
LHR
London
NZ$946 Return, found 2 days ago
NZ$946
Return
found 2 days ago
Select Icelandair flight, departing Sun, 18 Jan from Washington to London, returning Thu, 22 Jan, priced at NZ$946 found 2 days ago
United
Sun, 18 Jan - Tue, 27 Jan
IAD
Washington
LHR
London
NZ$1,062 Return, found 3 days ago
NZ$1,062
Return
found 3 days ago
Select United flight, departing Sun, 18 Jan from Washington to London, returning Tue, 27 Jan, priced at NZ$1,062 found 3 days ago
Virgin Atlantic
Fri, 6 Feb - Sun, 8 Feb
IAD
Washington
LHR
London
NZ$1,070 Return, found 3 days ago
NZ$1,070
Return
found 3 days ago
Select Virgin Atlantic flight, departing Fri, 6 Feb from Washington to London, returning Sun, 8 Feb, priced at NZ$1,070 found 3 days ago
Aer Lingus
Fri, 6 Feb - Sun, 8 Feb
IAD
Washington
LHR
London
NZ$1,076 Return, found 3 days ago
NZ$1,076
Return
found 3 days ago
Select Aer Lingus flight, departing Fri, 6 Feb from Washington to London, returning Sun, 8 Feb, priced at NZ$1,076 found 3 days ago
Delta
Sun, 18 Jan - Tue, 27 Jan
IAD
Washington
LHR
London
NZ$1,111 Return, found 3 days ago
NZ$1,111
Return
found 3 days ago
Select Delta flight, departing Sun, 18 Jan from Washington to London, returning Tue, 27 Jan, priced at NZ$1,111 found 3 days ago
TAP Portugal
Fri, 7 Aug - Fri, 28 Aug
IAD
Washington
LHR
London
NZ$1,138 Return, found 13 hours ago
NZ$1,138
Return
found 13 hours ago
Select TAP Portugal flight, departing Fri, 7 Aug from Washington to London, returning Fri, 28 Aug, priced at NZ$1,138 found 13 hours ago
United
Fri, 7 Aug - Fri, 28 Aug
IAD
Washington
LHR
London
NZ$1,185 Return, found 13 hours ago
NZ$1,185
Return
found 13 hours ago
Select United flight, departing Fri, 7 Aug from Washington to London, returning Fri, 28 Aug, priced at NZ$1,185 found 13 hours ago
Brussels Airlines
Tue, 12 May - Fri, 29 May
IAD
Washington
LHR
London
NZ$1,206 Return, found 4 days ago
NZ$1,206
Return
found 4 days ago
Select Brussels Airlines flight, departing Tue, 12 May from Washington to London, returning Fri, 29 May, priced at NZ$1,206 found 4 days ago
Lufthansa
Fri, 7 Aug - Fri, 28 Aug
IAD
Washington
LHR
London
NZ$1,222 Return, found 13 hours ago
NZ$1,222
Return
found 13 hours ago
Select Lufthansa flight, departing Fri, 7 Aug from Washington to London, returning Fri, 28 Aug, priced at NZ$1,222 found 13 hours ago
Austrian Airlines
Fri, 7 Aug - Fri, 28 Aug
IAD
Washington
LHR
London
NZ$1,246 Return, found 13 hours ago
NZ$1,246
Return
found 13 hours ago
Select Austrian Airlines flight, departing Fri, 7 Aug from Washington to London, returning Fri, 28 Aug, priced at NZ$1,246 found 13 hours ago
Flight from Washington to London route information
Origin airport
Washington Dulles Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, United, Virgin Atlantic
Return price
NZ$946
Distance
5866 km
Average flight time
12 hours 22 mins

Perfect flights from Washington to London

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Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Washington Dulles Intl. to Heathrow ticket options cater to your travel preferences, with incredible one-way fares from NZ$611 and roundtrip prices from NZ$946. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Heathrow and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in London.

Frequently asked questions

How much is a flight from Washington Dulles Intl. Airport (IAD) to Heathrow Airport (LHR)?
Start packing your suitcase, because round-trip journeys from IAD to London Heathrow start from NZ$946. That's based on airfares listed within the last 7 days on Expedia for flights departing within the next year. Prices can change quickly, so book today to nab the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Dulles Intl. Airport to Heathrow Airport?
We understand that things come up unexpectedly, so we've made it as easy as possible for you to cancel your trip online. Just head to the Customer Service Portal and follow the instructions.
How do I find cheap flights from Dulles Intl. Airport to Heathrow Airport (LHR) 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 IAD to Heathrow Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Dulles Intl. Airport to LHR?
You'll have 5 900 kilometres to cover on the long-haul Chantilly to Hounslow route. Dress in layers of comfortable clothes and consider taking a sleep mask and earplugs.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to Heathrow Airport?
With 60 flights a month from Dulles Intl. Airport to LHR, United Airlines (UA) is an excellent choice. Another carrier operating on this route is British Airways (BA). You'll have 60 flights every month to choose from.
Are IAD to LHR flight tickets cheaper when they're purchased at the last minute?
Booking your trip from IAD to London Heathrow at the last minute could be your ticket to a great deal. However, it could end up costing a great deal more! If you'd prefer to err on the side of caution, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to a year in advance. If your preferred carrier hasn't released tickets yet, check back regularly as deals are updated on Expedia all the time.

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