Question 1

How long does a flight from Washington, D.C. to London take?

Accepted Answer

Nonstop flights from Washington, D.C. generally make it to London in 7h 10m. The flying distance between the two cities is 9,491 km. Visit our flight page for the latest deals!>/a>

Question 2

How many flights are there between Washington, D.C. Dulles Intl Airport and London Heathrow Airport per day?

Accepted Answer

Each day, there are between 4 and 5 nonstop flights that take off from Washington, D.C. Dulles Intl Airport and land in London Heathrow Airport, with an average flight time of 7h 22m. The most common departure time is 6:00 p.m. and most flights take off in the evening. Each week, there are 33 flights. The most frequent day of departure is Tuesday, when 15% of all weekly flights depart. The fewest flights depart on a Monday. Visit our flight page for the latest deals!>/a>

Question 3

How many flights are there between Washington, D.C. Dulles Intl Airport and London Heathrow Airport per day?

Accepted Answer

Each day, there are between 4 and 5 nonstop flights that take off from Washington, D.C. Dulles Intl Airport and land in London Heathrow Airport, with an average flight time of 7h 22m. The most common departure time is 6:00 p.m. and most flights take off in the evening. Each week, there are 33 flights. The most frequent day of departure is Tuesday, when 15% of all weekly flights depart. The fewest flights depart on a Monday. Visit our flight page for the latest deals!>/a>

Question 4

What is the cheapest flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

Accepted Answer

In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport was C$ 494 for a one-way ticket and C$ 742 for a round-trip. <a href='/flight-routes/Washington-D-C-Dulles-Intl-IAD/London-Heathrow-LHR'>Visit our flight page for the latest deals!>/a>

Question 5

Which airlines fly most frequently between Washington, D.C. and London?

Accepted Answer

British Airways connects Washington, D.C. to London with 14 flights per week. United Airlines also offers 14 flights per week, while Virgin Atlantic follows with 5 flights per week. Visit our flight page for the latest deals!>/a>

Question 6

Which airlines fly most frequently between Washington, D.C. and London?

Accepted Answer

British Airways connects Washington, D.C. to London with 14 flights per week. United Airlines also offers 14 flights per week, while Virgin Atlantic follows with 5 flights per week. Visit our flight page for the latest deals!>/a>

Question 7

What’s the cheapest day of the week to fly from Washington, D.C. to London?

Accepted Answer

If you are looking for a flight deal from Washington, D.C. to London, look for departures on Thursdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from London, Tuesday is the cheapest day to fly and Sunday is the most expensive. Visit our flight page for the latest deals!>/a>

Question 8

What’s the cheapest day of the week to fly from Washington, D.C. to London?

Accepted Answer

If you are looking for a flight deal from Washington, D.C. to London, look for departures on Thursdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from London, Tuesday is the cheapest day to fly and Sunday is the most expensive. Visit our flight page for the latest deals!>/a>

Question 9

Which airports will I be using when flying from Washington, D.C. to London?

Accepted Answer

On your way to London, you’ll fly out from Washington, D.C. Dulles Intl. You’ll be landing at London Heathrow. <a href='/flight-routes/Washington-D-C-Dulles-Intl-IAD/London-Heathrow-LHR'>Visit our flight page for the latest deals!>/a>

Question 10

What’s the earliest departure time from Washington, D.C. to London?

Accepted Answer

Early birds can take the earliest flight from Washington, D.C. Dulles Intl Airport at 6:20 pm and will be landing in London Heathrow Airport at 6:30 am.

Question 11

What’s the latest departure time from Washington, D.C. to London?

Accepted Answer

If you prefer to fly at night, the latest flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport jets off at 10:20 pm and lands at 10:50 am.

Question 12

Which airlines offer Wi-Fi service onboard planes from Washington, D.C. to London?

Accepted Answer

Only American Airlines offers inflight Wi-Fi service on the Washington, D.C. to London flight route.

Question 13

Which aircraft models fly most regularly from Washington, D.C. to London?

Accepted Answer

The Boeing 777 is the aircraft model that flies most regularly on the Washington, D.C. to London flight route.

Question 14

On which days can I fly direct from Washington, D.C. to London?

Accepted Answer

There are direct flights from Washington, D.C. to London on a daily basis.

Question 15

What accessibility services are there at Dulles Intl Airport?

Accepted Answer

To cater to travelers with limited mobility and disabilities, Dulles Airport offers a wide range of accessibility services. These include elevators with Braille signage and self-voicing announcements, wheelchair access, a pet relief area for service or companion dogs, public restrooms with disability access, and assisted security screenings.

Question 16

Are there nonstop flights from Dulles Intl to London-Heathrow Airport?

Accepted Answer

Passengers wishing to fly from Washington, DC, to London can get nonstop flights from several airlines, including Lufthansa. Other nonstop flights are operated by multiple airlines, although the tickets come at a higher price. Most flights operated by American Airlines, Finnair, Icelandair, Delta Air Lines, and Virgin Atlantic have one- or two-stop flights. Depending on the airline, you may board your connecting flight in Keflavik, Dallas, Chicago, Helsinki, Boston, or Atlanta.

Question 17

Are there airport hotels at London-Heathrow Airport?

Accepted Answer

There are hotels located right within Heathrow Airport. They include the Hilton Garden Inn Airport Hotel, situated right next to Terminal 2 and a few minutes walk to Terminal 3. Alternatively, you can choose to stay at the Aerotel London Heathrow situated near Terminal 2 and 3. Other hotels within a comfortable walking distance include the Novotel London Heathrow Airport T1 T2 and T3, Ibis Styles London Heathrow Airport, Radisson Blu Edwardian Heathrow Hotel, and more.

Question 18

How can I get from Heathrow Airport to the London city center?

Accepted Answer

You can get from London-Heathrow Airport to the city center by train. You can board a train from Heathrow Central Station, located about 5min from terminals 2 and 3. You can get train tickets at the automated ticketing machines or booking office at the station. Trains from the airport arrive in the downtown area at Paddington Station after about 15min.

Question 19

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

Accepted Answer

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to London Heathrow Airport is August, where tickets cost C$ 927 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is C$ 1,402 and C$ 1,184 respectively.

Question 20

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

Accepted Answer

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to London Heathrow Airport is August, where tickets cost C$ 927 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is C$ 1,402 and C$ 1,184 respectively.

Question 21

How does KAYAK find such low prices on flights from Washington, D.C. to London?

Accepted Answer

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to London. <a href='/flight-routes/Washington-D-C-Dulles-Intl-IAD/London-Heathrow-LHR'>Visit our flight page for the latest deals!>/a>

Question 22

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to London?

Accepted Answer

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Washington, D.C. is likely to change within 7 days, so travellers know whether to wait or book now. <a href='/flight-routes/Washington-D-C-Dulles-Intl-IAD/London-Heathrow-LHR'>Visit our flight page for the latest deals!>/a>

Question 23

What is the Hacker Fare option on flights from Washington, D.C. to London?

Accepted Answer

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Washington, D.C. with another airline. <a href='/flight-routes/Washington-D-C-Dulles-Intl-IAD/London-Heathrow-LHR'>Visit our flight page for the latest deals!>/a>

Question 24

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to London?

Accepted Answer

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. <a href='/flight-routes/Washington-D-C-Dulles-Intl-IAD/London-Heathrow-LHR'>Visit our flight page for the latest deals!>/a>

Question 25

What is the cheapest layover airport when flying from Washington, D.C. to London?

Accepted Answer

Flights via Copenhagen (CPH) offer the most affordable fares, with an average round-trip price of C$ 1,017.

Question 26

What is the most popular layover airport when flying from Washington, D.C. to London?

Accepted Answer

Dublin (DUB) is the top choice – 67% of KAYAK users who clicked on one-stop flights from Washington, D.C. to London picked an itinerary connecting there.

Question 27

Which layover airport has the quickest connection when flying from Washington, D.C. to London?

Accepted Answer

If you prefer a quick connection, Dublin (DUB) often has the shortest layovers from Washington, D.C. to London, with an average of 2h 19m.

Question 28

Which layover airport offers the shortest total travel time from Washington, D.C. to London?

Accepted Answer

Consider flying via Dublin (DUB) for the shortest journey. The average one-way travel time for flights connecting there is 10h 08m.

Question 29

How often are flights from Washington, D.C. to London delayed?

Accepted Answer

Weekly flights between Washington, D.C. and London historically see delays in approximately 21% of cases, with the average delay over the past year being 162 minutes.

Question 30

Which airline has the best punctuality record on Washington, D.C. to London flights?

Accepted Answer

Based on our data, Virgin Atlantic have experienced the fewest delays on this route in the past 12 months, with only about 15% of their flights encountering any delays.

Question 31

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Statistically, Monday is the day of the week with the fewest delays on this flight route, while Thursday has typically experienced more delays than other days.

Question 32

What is the most punctual flight time for Washington, D.C. to London flights?

Accepted Answer

Typically, flights leaving at night tend to face fewer delays, whereas flights in the morning have historically encountered delays more often.

Question 33

Which cabin class options are there for flights between Washington, D.C. Dulles Intl Airport and London Heathrow Airport?

Accepted Answer

There are 3 cabin class options for the route. These are Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Question 34

Which cabin class options are there for flights between Washington, D.C. Dulles Intl Airport and London Heathrow Airport?

Accepted Answer

There are 3 cabin class options for the route. These are Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Question 35

Which airlines provide the cheapest flights from Washington, D.C. to London?

Accepted Answer

In the past 3 days, the cheapest round-trip tickets from Washington, D.C. to London were found on Scandinavian Airlines (C$ 742) and Icelandair (C$ 765).

Question 36

Which airlines provide the cheapest flights from Washington, D.C. to London?

Accepted Answer

In the past 3 days, the cheapest round-trip tickets from Washington, D.C. to London were found on Scandinavian Airlines (C$ 742) and Icelandair (C$ 765).

Question 37

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

Accepted Answer

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport, you should book around 2 weeks before departure, which saves you about 17% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Question 38

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

Accepted Answer

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport, you should book around 2 weeks before departure, which saves you about 17% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Question 39

Can I save money by flying with a layover from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

Accepted Answer

No, with an average price for the route of C$ 855, prices are generally cheapest when you fly direct.

Question 40

Can I save money by flying with a layover from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

Accepted Answer

No, with an average price for the route of C$ 855, prices are generally cheapest when you fly direct.

Question 41

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

Accepted Answer

Flight prices are below average for this route right now.Flights to London Heathrow Airport from Washington, D.C. Dulles Intl Airport usually cost between C$ 885 and C$ 1,137 in February.
The lowest price found in the past 3 days was C$ 742 on Scandinavian Airlines (7 Feb-9 Feb).

Low season	January
High season	July
Cheapest flight	C$ 494

IAD - LHR

C$ 494 Find Cheap Flights from Washington, D.C. to London

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Everything you should know

Cheap Flights from Washington, D.C. to Heathrow (IAD-LHR)

Recent round-trip flight deals from Washington, D.C. to Heathrow

Recent one-way flight deals from Washington, D.C. to Heathrow

Recent last minute flight deals from Washington, D.C. to Heathrow

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KAYAK's insights & trends for Washington, D.C. to Heathrow flights

Get data-powered insights and trends into flights from Washington, D.C. to Heathrow to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

What’s the cheapest day of the week to fly from Washington, D.C. to London?

If you are looking for a flight deal from Washington, D.C. to London, look for departures on Thursdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from London, Tuesday is the cheapest day to fly and Sunday is the most expensive.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

Can I save money by flying with a layover from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

No, with an average price for the route of C$ 855, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

Which airlines provide the cheapest flights from Washington, D.C. to London?

In the past 3 days, the cheapest round-trip tickets from Washington, D.C. to London were found on Scandinavian Airlines (C$ 742) and Icelandair (C$ 765).

Which airlines fly most frequently between Washington, D.C. and London?

British Airways connects Washington, D.C. to London with 14 flights per week. United Airlines also offers 14 flights per week, while Virgin Atlantic follows with 5 flights per week.

How often are flights from Washington, D.C. to London delayed?

Weekly flights between Washington, D.C. and London historically see delays in approximately 21% of cases, with the average delay over the past year being 162 minutes.

What is the most punctual flight time for Washington, D.C. to London flights?

Typically, flights leaving at night tend to face fewer delays, whereas flights in the morning have historically encountered delays more often.

What day of the week experiences the fewest flight delays on this route?

Statistically, Monday is the day of the week with the fewest delays on this flight route, while Thursday has typically experienced more delays than other days.

Which airline has the best punctuality record on Washington, D.C. to London flights?

Based on our data, Virgin Atlantic have experienced the fewest delays on this route in the past 12 months, with only about 15% of their flights encountering any delays.

What is the most popular layover airport when flying from Washington, D.C. to London?

Dublin (DUB) is the top choice – 67% of KAYAK users who clicked on one-stop flights from Washington, D.C. to London picked an itinerary connecting there.

What is the cheapest layover airport when flying from Washington, D.C. to London?

Flights via Copenhagen (CPH) offer the most affordable fares, with an average round-trip price of C$ 1,017.

Which layover airport offers the shortest total travel time from Washington, D.C. to London?

Consider flying via Dublin (DUB) for the shortest journey. The average one-way travel time for flights connecting there is 10h 08m.

Which layover airport has the quickest connection when flying from Washington, D.C. to London?

If you prefer a quick connection, Dublin (DUB) often has the shortest layovers from Washington, D.C. to London, with an average of 2h 19m.

Which cabin class options are there for flights between Washington, D.C. Dulles Intl Airport and London Heathrow Airport?

There are 3 cabin class options for the route. These are Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How many flights are there between Washington, D.C. Dulles Intl Airport and London Heathrow Airport per day?

How long does a flight from Washington, D.C. to London take?

Nonstop flights from Washington, D.C. generally make it to London in 7h 10m. The flying distance between the two cities is 9,491 km.

What’s the earliest departure time from Washington, D.C. to London?

Early birds can take the earliest flight from Washington, D.C. Dulles Intl Airport at 6:20 pm and will be landing in London Heathrow Airport at 6:30 am.

What’s the latest departure time from Washington, D.C. to London?

If you prefer to fly at night, the latest flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport jets off at 10:20 pm and lands at 10:50 am.

Expert advice for your flight from Washington, D.C. to Heathrow

Good to know

When to book flights from Washington, D.C. to Heathrow

Flights from Washington, D.C. to Heathrow: the best tips from KAYAK users' own experiences

FAQs for booking Washington, D.C. to London flights

What accessibility services are there at Dulles Intl Airport?

Are there nonstop flights from Dulles Intl to London-Heathrow Airport?

Are there airport hotels at London-Heathrow Airport?

How can I get from Heathrow Airport to the London city center?

What is the cheapest flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport was C$ 494 for a one-way ticket and C$ 742 for a round-trip.

Which airports will I be using when flying from Washington, D.C. to London?

On your way to London, you’ll fly out from Washington, D.C. Dulles Intl. You’ll be landing at London Heathrow.

Which airlines offer Wi-Fi service onboard planes from Washington, D.C. to London?

Only American Airlines offers inflight Wi-Fi service on the Washington, D.C. to London flight route.

Which aircraft models fly most regularly from Washington, D.C. to London?

The Boeing 777 is the aircraft model that flies most regularly on the Washington, D.C. to London flight route.

On which days can I fly direct from Washington, D.C. to London?

There are direct flights from Washington, D.C. to London on a daily basis.

How does KAYAK find such low prices on flights from Washington, D.C. to London?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to London.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to London?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Washington, D.C. is likely to change within 7 days, so travellers know whether to wait or book now.

What is the Hacker Fare option on flights from Washington, D.C. to London?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Washington, D.C. with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to London?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport

Prefer to fly direct from Washington, D.C. to London?

Everything you need to know for your flight from Washington, D.C. to Heathrow

Information on your arrival and departure airports

Cabin class types available on flights to Heathrow

Complete your trip to Heathrow with a hotel stay or car rental