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

Prices are currently low for flights on this route. Typical prices usually range from £450 to £535. The lowest price recently found on this route was £379.

Question 1

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

Accepted Answer

24 flights are operational daily from Washington, D.C. Dulles Intl Airport to London as of January 2026. The most popular departure time for this route is 22:00, with 100% of flights per day taking off in the evening.

Question 2

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

Accepted Answer

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

Question 3

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

Accepted Answer

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

Question 4

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

Accepted Answer

Flights connecting via Dublin (DUB) have the shortest average one-way travel time: 9h 50m.

Question 5

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

Accepted Answer

As of January 2026, prices for Washington, D.C. Dulles Intl Airport to London flights are approximately 33% more expensive when compared to flights at the same time last year.

Question 6

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

Accepted Answer

You could potentially save up to 15% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to London flight.

Question 7

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

Accepted Answer

Prices are currently low for flights on this route.Typical prices usually range from £450 to £535.
The lowest price recently found on this route was £379.

Question 8

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

Accepted Answer

As of January 2026, there are 172 flights per week flying from Washington, D.C. Dulles Intl Airport to London. The most common day of the week flights depart is Tue, with 15% of flights taking off on this day.

Question 9

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

Accepted Answer

Reykjavik (KEF) was the most common stop: 67% of momondo users choosing one-stop flights on this route connected there.

Question 10

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

Accepted Answer

Flights via Dublin (DUB) offer the lowest average return price of £384.

Question 11

What is the cheapest month to fly to London?

Accepted Answer

The cheapest month to fly to London from Washington, D.C. Dulles Intl Airport is in September. Flight prices, which tend to average around £451, are often lower during this time because this is during the off-season. The month of October is another great option to travel to London, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around £467.

Question 12

How far in advance should I book a flight to London?

Accepted Answer

You are more likely to see cheaper flights to London from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £549 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Washington, D.C. Dulles Intl Airport for as low as £514 on momondo.

Question 13

Which airlines fly to London?

Accepted Answer

British Airways, Virgin Atlantic and United Airlines are the top three most popular airlines that fly to London from Washington, D.C. Dulles Intl Airport according to our data. British Airways is the first choice among our users, with 40% of people opting to fly with this airline when travelling to London. Keep in mind that there are 7 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Question 14

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

Accepted Answer

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 15% of their flights experiencing any sort of delay.

Question 15

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

Accepted Answer

Reykjavik (KEF) has the shortest average stopover time for this route: 1h 10m.

Question 16

What is the cheapest time of day to depart on your flight to London?

Accepted Answer

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £541. Flights in the evening are often more expensive, with an average ticket price of £560.

Question 17

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

Accepted Answer

TAP AIR PORTUGAL, Scandinavian Airlines, and KLM are the most popular carriers operating from Washington, D.C. Dulles Intl to London

Question 18

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

Accepted Answer

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

Question 19

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

Accepted Answer

Monday 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 20

What is the cheapest day to depart on your flight to London?

Accepted Answer

Our data shows that Wednesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £527. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. Dulles Intl Airport to London for around £599.

Question 21

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

Accepted Answer

Historically, on average around 21% of flights between Washington, D.C. and London have experienced a delay on any given week. The average delay length over the past 12 months has been 162 minutes.

Question 22

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

Accepted Answer

Prices for flights from Washington, D.C. Dulles Intl Airport to London are refreshed on a daily basis.

Question 23

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

Accepted Answer

As of January 2026, there are 7 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to London.

Question 24

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

Accepted Answer

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Dulles Intl Airport to London.

Question 25

What documentation or ID do you need to fly to London?

Accepted Answer

The travel and health documents required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best price found	£327
Fastest flight time	7h 10m
Direct flights	Every day
Airports in London	6 airports

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom £302	Free Cancellation	Rating 6.8 7,749 reviews	Search Lufthansa flights
Icelandair	PriceFrom £360	Free Cancellation	Rating 7.1 603 reviews	Search Icelandair flights
Virgin Atlantic	PriceFrom £373	Free Cancellation	Rating 7.5 678 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom £377	Free Cancellation	Rating 6.7 7,704 reviews	Search British Airways flights
Air France	PriceFrom £388	Free Cancellation	Rating 7.4 1,528 reviews	Search Air France flights
Iberia	PriceFrom £447	Free Cancellation	Rating 7.0 3,099 reviews	Search Iberia flights
United Airlines	PriceFrom £482	Free Cancellation	Rating 7.4 9,209 reviews	Search United Airlines flights

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