Flight tickets from Washington Dulles (IAD) to London Heathrow (LHR) from ₹ 18,651

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Compare Washington Dulles to London Heathrow flight deals

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Flight deals from Washington Dulles to London Heathrow

Looking for a cheap last-minute deal or the best return flight from Washington Dulles Airport to London Heathrow Airport? If you want to travel next month, return fares start from ₹ 52,612. Find the lowest prices on one-way and return tickets right here.

London.₹ 18,651 per passenger.Departing Sat, 26 Sep.One-way flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departs from Washington Dulles on Sat, 26 Sep, arriving in London Heathrow.Price includes taxes and charges.From ₹ 18,651, select.

London.₹ 27,853 per passenger.Departing Thu, 7 Jan.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Washington Dulles on Thu, 7 Jan, arriving in London Heathrow.Price includes taxes and charges.From ₹ 27,853, select.

London.₹ 28,127 per passenger.Departing Tue, 13 Apr.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Washington Dulles on Tue, 13 Apr, arriving in London Heathrow.Price includes taxes and charges.From ₹ 28,127, select.

London.₹ 28,300 per passenger.Departing Tue, 13 Oct.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Washington Dulles on Tue, 13 Oct, arriving in London Heathrow.Price includes taxes and charges.From ₹ 28,300, select.

London.₹ 28,310 per passenger.Departing Sun, 15 Nov.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Washington Dulles on Sun, 15 Nov, arriving in London Heathrow.Price includes taxes and charges.From ₹ 28,310, select.

London.₹ 28,351 per passenger.Departing Fri, 5 Feb.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Washington Dulles on Fri, 5 Feb, arriving in London Heathrow.Price includes taxes and charges.From ₹ 28,351, select.

London.₹ 28,366 per passenger.Departing Tue, 8 Dec.One-way flight with ITA Airways.Outbound indirect flight with ITA Airways, departs from Washington Dulles on Tue, 8 Dec, arriving in London Heathrow.Price includes taxes and charges.From ₹ 28,366, select.

London.₹ 28,729 per passenger.Departing Sun, 9 May.One-way flight with ITA Airways.Outbound indirect flight with ITA Airways, departs from Washington Dulles on Sun, 9 May, arriving in London Heathrow.Price includes taxes and charges.From ₹ 28,729, select.

London.₹ 28,742 per passenger.Departing Mon, 15 Mar.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Washington Dulles on Mon, 15 Mar, arriving in London Heathrow.Price includes taxes and charges.From ₹ 28,742, select.

London.₹ 29,911 per passenger.Departing Wed, 6 Jan.One-way flight with British Airways.Outbound direct flight with British Airways departs from Washington Dulles on Wed, 6 Jan, arriving in London Heathrow.Price includes taxes and charges.From ₹ 29,911, select.

London.₹ 30,020 per passenger.Departing Tue, 8 Dec.One-way flight with Virgin Atlantic.Outbound direct flight with Virgin Atlantic departs from Washington Dulles on Tue, 8 Dec, arriving in London Heathrow.Price includes taxes and charges.From ₹ 30,020, select.

London.₹ 30,124 per passenger.Departing Mon, 10 May.One-way flight with Virgin Atlantic.Outbound direct flight with Virgin Atlantic departs from Washington Dulles on Mon, 10 May, arriving in London Heathrow.Price includes taxes and charges.From ₹ 30,124, select.

London.₹ 30,137 per passenger.Departing Tue, 13 Apr.One-way flight with Virgin Atlantic.Outbound direct flight with Virgin Atlantic departs from Washington Dulles on Tue, 13 Apr, arriving in London Heathrow.Price includes taxes and charges.From ₹ 30,137, select.

London.₹ 30,704 per passenger.Departing Sun, 21 Feb.One-way flight with Air France.Outbound direct flight with Air France departs from Washington Dulles on Sun, 21 Feb, arriving in London Heathrow.Price includes taxes and charges.From ₹ 30,704, select.

London.₹ 30,704 per passenger.Departing Wed, 24 Mar.One-way flight with Air France.Outbound direct flight with Air France departs from Washington Dulles on Wed, 24 Mar, arriving in London Heathrow.Price includes taxes and charges.From ₹ 30,704, select.

London.₹ 30,751 per passenger.Departing Wed, 4 Aug.One-way flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departs from Washington Dulles on Wed, 4 Aug, arriving in London Heathrow.Price includes taxes and charges.From ₹ 30,751, select.

Find the cheapest month to fly from Washington Dulles to London Heathrow

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington Dulles to London Heathrow flights are currently cheapest in September.

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Direct flights from Washington Dulles to London Heathrow

Washington Dulles to London Heathrow: Alternative routes

Compare routes from Washington Dulles to London below. You may find an airport to fly into that's cheaper, faster, or easier than London Heathrow.

Washington D.C. to London: Flight information

The things to know before you go.

Cheapest flight found	₹ 18,651
Cheapest month to fly	September
Average flight time	7 hrs, 25 mins
Most popular airline	Lufthansa
Average flights per week	231

Finding cheap flights from Washington Dulles to London Heathrow: Frequently asked questions

How much are return flights from Washington Dulles to London Heathrow?

The best price we found for a return flight from Washington Dulles to London Heathrow is ₹ 46,135. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Washington Dulles to London Heathrow?

7 hours and 25 minutes is the average flight time from Washington Dulles to London Heathrow.

Which airlines fly direct from Washington Dulles to London Heathrow?

Lufthansa, American Airlines and British Airways fly direct from Washington Dulles to London Heathrow.

How many flights are there a week from Washington Dulles to London Heathrow?

As of September 2026, there are 231 flights per week flying from Washington Dulles to London Heathrow.

When is the cheapest time to fly from Washington Dulles to London Heathrow?

The cheapest month to fly from Washington Dulles to London Heathrow is usually December.

Which upcoming date is cheapest to fly from Washington Dulles Airport to London Heathrow Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to London Heathrow Airport on Saturday, 5 December 2026.

Can I get a direct flight from Washington Dulles Airport to London Heathrow Airport?

Yes – the average flight time is 7 hours and 25 minutes.

How can I find the best flight deal to London Heathrow?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Heathrow but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to London?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Washington Dulles Airport to London Heathrow with?

Currently, Scandinavian Airlines and Virgin Atlantic offer the cheapest flight tickets to London Heathrow.

Flying from Washington Dulles International Airport (IAD) to London Heathrow Airport (LHR): what you need to know

The average time for a direct flight from Washington Dulles International Airport to London Heathrow Airport is 7 hours 15 minutes.
London is four hours ahead of Washington DC and observes the UTC+0 timezone.
Each week, there are 56 Washington Dulles International Airport to London Heathrow Airport flights. If you want to get going as soon as possible, select the 08:30 United Airlines flight. If you'd rather make the most of your time before you fly, the latest flight is at 23:35 with United Airlines.
To ensure you get on your IAD to LHR flight, allow plenty of time for things like check-in and baggage drop. Arriving two hours before international departures and an hour before domestic flights is the standard rule.
During popular months like April, it's a good idea to get to the airport earlier than normal. Plan to arrive two hours before domestic departures and four hours ahead for an international flight when you travel during a peak period in general.
With direct flights from Washington Dulles International Airport to London Heathrow Airport operated by a number of airlines, getting to London (and then other parts of United Kingdom) is a cinch. You can travel nonstop with:
Most travellers choose to fly with British Airways on this route.
With a reliable 88.33% of services arriving on schedule, Virgin Atlantic is the most punctual carrier offering IAD to LHR flights.
We make it simple to book a flight with a stopover. To see all your options for tickets from Washington Dulles International Airport to London Heathrow Airport, deselect 'Direct flights only.' Then, choose a flight that has a stop long enough to explore the city of your choice. Stopovers between IAD and LHR include:
- Newark Liberty International Airport
- Dublin Airport
- Logan International Airport

How to find the cheapest flights from Washington Dulles International Airport (IAD) to London Heathrow Airport (LHR)

₹ 18,651 is the lowest price for a one-way Washington Dulles International Airport to London Heathrow Airport flight. A return flight starts from ₹ 46,135. These fares may change depending on demand and availability.
To secure cheap tickets from IAD to LHR, reserve your trip eight months ahead of your departure date.
The cheapest month for flights from Washington Dulles International Airport to London Heathrow Airport is July. Use the 'Whole month' tool to find the lowest airfares if you have a flexible travel schedule.
You won't have to check every day to see if fares have dropped when you create a Price Alert. We'll update you as soon as a special offer becomes available on cheap flights from IAD to LHR.
Tailor your trip using filters. Select your preferred departure and arrival times, airlines and total journey duration. You can also sort the results by 'Best,' 'Cheapest' or 'Fastest' flights from Washington Dulles International Airport to London Heathrow Airport.

Handy information about Washington Dulles International Airport (IAD)

IAD's address is 1 Saarinen Circle.
Of all flights leaving Washington Dulles International Airport, 74.39% arrive as scheduled at their destination.
Central Washington DC to Washington Dulles International Airport is around 56 kilometres. Depending on traffic, it'll take you about 50 minutes to get there if you're driving, catching a cab or ride-sharing.
Expect a journey time of about 3 hours 25 minutes on public transport.
Have an early flight from Washington Dulles International Airport to London Heathrow Airport? Avoid rushing to the airport (and sneak in some extra precious sleep) by picking one of these stays close to IAD:

Arriving at London Heathrow Airport (LHR)

Reserve a hotel near LHR if you're catching a late Washington Dulles International Airport to London Heathrow Airport flight. Settle into one of these options and make your arrival easier:
Grab a London Heathrow Airport rental car and discover London and beyond with your own wheels. Surprice, U-Save and Green Motion are leading providers you can book with here.
To secure the lowest price, book your vehicle from London Heathrow Airport around one week before your trip.

Getting from London Heathrow Airport (LHR) to central London

From London Heathrow Airport, London is approximately 31 kilometres away. It takes around 55 minutes to drive to the centre.
If you're using public transport, expect a journey time of roughly 1 hour.

When to fly to London Heathrow Airport (LHR)

July is the most popular month for flights from Washington Dulles International Airport to London Heathrow Airport. To steer clear of the crowds, visit London in February.
Book your flight from Washington Dulles International Airport to London Heathrow Airport for July if you want to go to London during its warmest month. You can expect temperatures of between 11ºC and 26ºC.
January has average temperatures of between 0ºC and 9ºC. Search for cheap tickets from IAD to LHR around that time if you like travelling in cooler conditions.

Explore more of United Kingdom

Birmingham is just one of the many cities in United Kingdom waiting to be discovered once you've seen the sights of London. Around 161 kilometres away to the north-west, popular attractions include Cadbury World, The Library of Birmingham and National Sea Life Centre.
If there's time to check out another well-known destination in United Kingdom, head for Bristol, roughly 177 kilometres west of London. Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park are key reasons to visit.