Question 1

Which is the best airline for flights from London to Washington, D.C., Virgin Atlantic or Austrian Airlines?

Accepted Answer

The two airlines most popular with KAYAK users for flights from London to Washington, D.C. are Virgin Atlantic and Austrian Airlines. With an average price for the route of £524 and an overall rating of 7.5, Virgin Atlantic is the most popular choice. Austrian Airlines is also a great choice for the route, with an average price of £528 and an overall rating of 7.5.

Question 2

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

Accepted Answer

The duration of a direct flight to Washington, D.C. from London Heathrow Airport is typically 8h 00m. The journey crosses a distance of 3,649 miles.

Question 3

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

Accepted Answer

Each day, there are between 5 and 6 direct flights that take off from London Heathrow Airport and land in Washington, D.C., with an average flight time of 8h 33m. The most common departure time is 16:00 and most flights take off in the afternoon, while the most flights land at Washington, D.C. Dulles Intl Airport. Each week, there are 41 flights. The most frequent day of departure is Monday, when 15% of all weekly flights depart. The fewest flights depart on a Tuesday.

Question 4

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

Accepted Answer

In the last 5 days, the lowest price for a flight from London Heathrow Airport to Washington, D.C. was £297 for a one-way ticket and £403 for a return.

Question 5

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

Accepted Answer

London Heathrow Airport and Washington, D.C. are connected by different airlines. The airlines that fly that route the most regularly are British Airways (21 flights per week), United Airlines (14 flights per week), and Virgin Atlantic (6 flights per week).

Question 6

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

Accepted Answer

Your flight ticket price will generally be cheaper if you fly to Washington, D.C. on a Friday and more expensive on a Sunday. On your return trip to London Heathrow Airport, you should consider flying back on a Tuesday, and avoid Thursdays for better deals.

Question 7

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

Accepted Answer

London Heathrow Airport is served by only 1 airport and there are 2 airports in Washington, D.C.. You will leave London Heathrow Airport from London Heathrow and you will be arriving in Washington, D.C. at one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl.

Question 8

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

Accepted Answer

Early birds can take the earliest flight from London Heathrow Airport at 12:05 and will be landing in Washington, D.C. at 15:40.

Question 9

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

Accepted Answer

If you prefer to fly at night, the latest flight from London Heathrow Airport to Washington, D.C. jets off at 16:25 and lands at 19:55.

Question 10

Which airlines fly direct between London Heathrow Airport and Washington, D.C.?

Accepted Answer

There are 12 airlines that fly direct from London Heathrow Airport to Washington, D.C.. They are: Aer Lingus, Air France, American Airlines, Austrian Airlines, British Airways, Delta, Finnair, Iberia, KLM, Lufthansa, United Airlines and Virgin Atlantic. The cheapest price of all airlines flying this route was found with Virgin Atlantic at £323 for a return flight. On average, the best prices for this route can be found at Virgin Atlantic.

Question 11

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

Accepted Answer

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

Question 12

Which airline alliances offer flights from London Heathrow Airport to Washington, D.C.?

Accepted Answer

oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between London Heathrow Airport and Washington, D.C., with oneworld being the most commonly used for this route.

Question 13

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

Accepted Answer

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

Question 14

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

Accepted Answer

The cheapest month for flights from London Heathrow Airport to Washington, D.C. is September, where tickets cost £487 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is £583 and £578 respectively.

Question 15

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

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 London Heathrow Airport to Washington, D.C..

Question 16

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

Accepted Answer

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

Question 17

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

Accepted Answer

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

Question 18

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

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 Washington, D.C. from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Question 19

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

Accepted Answer

Flights via Reykjavik (KEF) offer the most affordable fares, with an average price of £219 for a return.

Question 20

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

Accepted Answer

Dublin (DUB) is the top choice – 37% of KAYAK users who clicked on one-stop flights from London Heathrow Airport to Washington, D.C. picked an itinerary connecting there.

Question 21

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

Accepted Answer

If you prefer a quick connection, Charlotte (CLT) often has the shortest stopovers from London Heathrow Airport to Washington, D.C., with an average time of 1h 06m.

Question 22

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

Accepted Answer

Consider flying via Toronto (YYZ) for the shortest journey. The average one-way travel time for flights connecting there is 11h 07m.

Question 23

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

Accepted Answer

Weekly flights between London and Washington, D.C. historically see delays in approximately 16% of cases, with the average delay over the past year being 140 minutes.

Question 24

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

Accepted Answer

Based on our data, United Airlines have experienced the fewest delays on this route in the past 12 months, with only about 10% of their flights encountering any delays.

Question 25

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

Accepted Answer

Statistically, Saturday 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 26

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

Accepted Answer

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

Question 27

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

Accepted Answer

There are 4 cabin class options for the route. These are First, 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 28

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

Accepted Answer

In the past 5 days, the cheapest return tickets from London Heathrow Airport to Washington, D.C. were found on Icelandair (£403) and TAP AIR PORTUGAL (£405).

Question 29

What is the cheapest London Heathrow Airport to Washington, D.C. flight route?

Accepted Answer

The cheapest return flight from London Heathrow Airport to Washington, D.C. costs £405 on the route between London Heathrow Airport (LHR) and Washington, D.C. Dulles Intl Airport (IAD). Over the past month, this route was, on average, 9% cheaper than other London Heathrow Airport-Washington, D.C. routes. It is also the most popular route.

Question 30

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

Accepted Answer

To get a below average price on the flight from London Heathrow Airport to Washington, D.C., you should book around 6 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Question 31

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

Accepted Answer

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at £581 on average.

Question 32

How much is a return flight from London Heathrow Airport to Washington, D.C.?

Accepted Answer

Flight prices are below average for this route right now.Flights to Washington, D.C. from London Heathrow Airport usually cost between £455 and £626 in January.
The lowest price found in the past 5 days was £403 on Icelandair (13 Jan–20 Jan).

Question 33

What are the most popular airlines flying to Washington, D.C.?

Accepted Answer

The most popular airline among KAYAK users flying to Washington, D.C. is British Airways, followed by Virgin Atlantic and Lufthansa.

Low season	February
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Cheapest flight	£297

LHR - WAS

£297 Find Cheap Flights from London Heathrow Airport to Washington, D.C. – Compare and Save

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

Recent return flight deals from Heathrow to Washington, D.C.

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

How much is a return flight from London Heathrow Airport to Washington, D.C.?

What is the cheapest London Heathrow Airport to Washington, D.C. flight route?

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

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

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

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

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

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

Which airlines fly direct between London Heathrow Airport and Washington, D.C.?

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

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

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

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

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

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

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

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

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

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

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

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

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

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