Q: What is the typical price of a round-trip flight between London and Washington, D.C.?

Prices are currently typical for flights on this route. Typical prices usually range from £353 to £504. The lowest price recently found on this route was £391.

Question 1

What cabin class options are available on London to Washington, D.C. flights?

Accepted Answer

There are 4 cabin classes available to choose from on London to Washington, D.C. flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Question 2

What is the cheapest day to depart on your flight to Washington, D.C.?

Accepted Answer

On average, the least expensive day to fly to Washington, D.C. from London is on a Thursday. momondo users have found tickets for Thursday departures for as low as £573. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from London because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £620.

Question 3

Which stopover airport has the shortest connection time from London to Washington, D.C.?

Accepted Answer

Reykjavik (KEF) has the shortest average stopover time for this route: 1h 18m.

Question 4

What is the cheapest airline that flies from London to Washington, D.C.?

Accepted Answer

Lufthansa, Icelandair, and JetBlue are the most popular carriers operating from London to Washington, D.C.

Question 5

Can stopping save me money on London to Washington, D.C. flights?

Accepted Answer

You could potentially save up to 40% on your flight if you consider stops on a London to Washington, D.C. flight.

Question 6

What is the typical price of a round-trip flight between London and Washington, D.C.?

Accepted Answer

Prices are currently typical for flights on this route.Typical prices usually range from £353 to £504.
The lowest price recently found on this route was £391.

Question 7

How have London to Washington, D.C. flight prices changed over time?

Accepted Answer

As of January 2026, prices for London to Washington, D.C. flights are approximately 1% more expensive when compared to flights at the same time last year.

Question 8

Which airlines fly to Washington, D.C.?

Accepted Answer

British Airways, Virgin Atlantic and Icelandair are the top three most popular airlines that fly to Washington, D.C. from London according to our data. British Airways is the first choice among our users, with 47% of people opting to fly with this airline when travelling to Washington, D.C.. Keep in mind that there are 18 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

Question 9

How many flights depart from London to Washington, D.C. on average per week?

Accepted Answer

The number of flights available between London and Washington, D.C. is 192 per week as of January 2026. The most frequent departure day is Fri, with 17% of weekly flights leaving on this day.

Question 10

Which stopover airport offers the lowest fares from London to Washington, D.C.?

Accepted Answer

Flights via Zurich (ZRH) offer the lowest average return price of £338.

Question 11

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

Accepted Answer

Historically, on average around 17% of flights between London and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 131 minutes.

Question 12

Which stopover airport has the shortest travel time from London to Washington, D.C.?

Accepted Answer

Flights connecting via New York (JFK) have the shortest average one-way travel time: 11h 11m.

Question 13

What is the cheapest month to fly to Washington, D.C.?

Accepted Answer

The cheapest month to fly to Washington, D.C. from London is in February. Flight prices, which tend to average around £450, are often lower during this time because this is during the off-season. If you don’t want to visit Washington, D.C. in February, then you should wait until January to fly from London, when ticket prices are also cheap, with an average price of £465.

Question 14

How many flights depart from London to Washington, D.C. on average per day?

Accepted Answer

27 flights are operational daily from London to Washington, D.C. as of January 2026. The most popular departure time for this route is 16:00, with 100% of flights per day taking off in the afternoon.

Question 15

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

Accepted Answer

Generally, flights departing in the evening tend to experience fewer delays. Flights departing in the morning have, in the past, seen delays more frequently in comparison.

Question 16

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

Accepted Answer

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 8% of their flights experiencing any sort of delay.

Question 17

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

Accepted Answer

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

Question 18

What is the cheapest time of day to depart on your flight to Washington, D.C.?

Accepted Answer

At midday is the cheapest time of day to fly from London to Washington, D.C. when you can find flight prices for as low as £584. Flying to Washington, D.C. at midday is an ideal time because this is during off-peak travel hours. Flights to Washington, D.C. are more costly in the morning, with an average ticket price of £587. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Question 19

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

Accepted Answer

Fly from London Heathrow to Washington, D.C. Dulles Intl for the best London - Washington, D.C. flight prices

Question 20

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

Accepted Answer

You are more likely to see cheaper flights to Washington, D.C. from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around £547 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from London for as low as £524 on momondo.

Question 21

Which airport is the most popular for stopovers for flights between London and Washington, D.C.?

Accepted Answer

Reykjavik (KEF) was the most common stop: 33% of momondo users choosing one-stop flights on this route connected there.

Question 22

When did momondo last update prices for flights from London to Washington, D.C.?

Accepted Answer

Prices for flights from London to Washington, D.C. were last updated today.

Question 23

How many operators does momondo search for flights from London to Washington, D.C.?

Accepted Answer

As of January 2026, there are 18 operators available to choose from for flights from London to Washington, D.C..

Question 24

How old do you have to be to fly from London to Washington, D.C.?

Accepted Answer

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Washington, D.C..

Question 25

What documentation or ID do you need to fly to Washington, D.C.?

Accepted Answer

The required travel and health documents for your Washington, D.C. trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best price found	£477
Fastest flight time	8h 00m
Direct flights	Every day
Airports in Washington, D.C.	2 airports

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom £185	Free Cancellation	Rating 7.9 8,113 reviews	Search Delta flights
PLAY	PriceFrom £263	Free Cancellation	Rating 7.0 103 reviews	Search PLAY flights
Icelandair	PriceFrom £329	Free Cancellation	Rating 7.1 603 reviews	Search Icelandair flights
TAP AIR PORTUGAL	PriceFrom £342	Free Cancellation	Rating 7.1 2,130 reviews	Search TAP AIR PORTUGAL flights
Aer Lingus	PriceFrom £370	Free Cancellation	Rating 7.2 1,442 reviews	Search Aer Lingus flights
KLM	PriceFrom £370	Free Cancellation	Rating 7.7 1,442 reviews	Search KLM flights
United Airlines	PriceFrom £398	Free Cancellation	Rating 7.4 9,199 reviews	Search United Airlines flights
Lufthansa	PriceFrom £400	Free Cancellation	Rating 6.8 7,747 reviews	Search Lufthansa flights
Austrian Airlines	PriceFrom £408	Free Cancellation	Rating 7.6 894 reviews	Search Austrian Airlines flights
Virgin Atlantic	PriceFrom £410	Free Cancellation	Rating 7.5 678 reviews	Search Virgin Atlantic flights

Cheap flights from London to Washington, D.C. from £228

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Washington, D.C. departing on 20/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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