Question 1

What is the cheapest month to fly to United Kingdom?

Accepted Answer

The cheapest month to fly to United Kingdom from Washington, D.C. Dulles Intl Airport is in September. Flight prices, which tend to average around £480, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of September, then departing from Washington, D.C. Dulles Intl Airport during the month October is also very affordable. Most momondo users find prices during this month for around £482.

Question 2

Which airlines fly to United Kingdom?

Accepted Answer

British Airways, Virgin Atlantic and United Airlines are the top three most popular airlines that fly to United Kingdom from Washington, D.C. Dulles Intl Airport according to our data. British Airways is the first choice among our users, with 43% of people opting to fly with this airline when travelling to United Kingdom. Keep in mind that there are 9 different airlines that fly to United Kingdom on a routine basis, so you have a few additional options to choose from.

Question 3

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

Accepted Answer

25 flights are operational daily from Washington, D.C. Dulles Intl Airport to United Kingdom as of November 2025. The most popular departure time for this route is 22:00, with 100% of flights per day taking off in the evening.

Question 4

What is the cheapest day to depart on your flight to United Kingdom?

Accepted Answer

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to United Kingdom is on a Wednesday. Travellers who choose to depart for United Kingdom on a Wednesday will often find tickets for as low as £534. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. Dulles Intl Airport to United Kingdom for around £628.

Question 5

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

Accepted Answer

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

Question 6

How far in advance should I book a flight to United Kingdom?

Accepted Answer

You are more likely to see cheaper flights to United Kingdom from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £575 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from Washington, D.C. Dulles Intl Airport for as low as £536 on momondo.

Question 7

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

Accepted Answer

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 16% of their flights experiencing any sort of delay.

Question 8

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

Accepted Answer

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

Question 9

How often are flights from Washington, D.C. to the United Kingdom delayed?

Accepted Answer

Historically, on average around 21% of flights between Washington, D.C. and United Kingdom have experienced a delay on any given week. The average delay length over the past 12 months has been 158 minutes.

Question 10

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 11

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

Accepted Answer

The cheapest time of day to fly to United Kingdom is in the evening when flights can be purchased for as low as £586. Try not to purchase tickets in the afternoon because they tend to be around £594. Of course, these prices can vary depending on the time of year and what airport you fly to.

Question 12

What is the most punctual flight time for Washington, D.C. to the United Kingdom 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 13

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

Accepted Answer

TAP AIR PORTUGAL, British Airways, and KLM are the most popular carriers operating from Washington, D.C. Dulles Intl to United Kingdom

Question 14

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

Accepted Answer

As of November 2025, 177 flights take off from Washington, D.C. Dulles Intl Airport and land in United Kingdom each week. The most common flight departure day for this route is Thu, with 16% of weekly flights taking off on this day.

Question 15

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

Accepted Answer

You could potentially save up to 59% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to United Kingdom flight.

Question 16

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

Accepted Answer

Prices for flights from Washington, D.C. Dulles Intl Airport to United Kingdom refresh daily.

Question 17

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

Accepted Answer

As of November 2025, there are 9 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to United Kingdom.

Question 18

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

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 United Kingdom.

Question 19

What documentation or ID do you need to fly to United Kingdom?

Accepted Answer

The travel and health documents you'll need for your trip to United Kingdom may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at United Kingdom. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best price found	£322
Fastest flight time	7h 05m
Direct flights	Every day
Airports in United Kingdom	2 airports

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom £314	Free Cancellation	Rating 6.8 7,594 reviews	Search Lufthansa flights
Icelandair	PriceFrom £342	Free Cancellation	Rating 7.0 581 reviews	Search Icelandair flights
Virgin Atlantic	PriceFrom £384	Free Cancellation	Rating 7.5 675 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom £392	Free Cancellation	Rating 6.7 7,539 reviews	Search British Airways flights
Air France	PriceFrom £403	Free Cancellation	Rating 7.4 1,497 reviews	Search Air France flights
Aer Lingus	PriceFrom £449	Free Cancellation	Rating 7.2 1,381 reviews	Search Aer Lingus flights
Iberia	PriceFrom £465	Free Cancellation	Rating 7.0 3,035 reviews	Search Iberia flights
United Airlines	PriceFrom £510	Free Cancellation	Rating 7.4 9,046 reviews	Search United Airlines flights
KLM	PriceFrom £581	Free Cancellation	Rating 7.7 1,423 reviews	Search KLM flights

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Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to United Kingdom?

What is the cheapest day to depart on your flight to United Kingdom?

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

The cheapest time of day to fly to United Kingdom is in the evening when flights can be purchased for as low as £586. Try not to purchase tickets in the afternoon because they tend to be around £594. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

How far in advance should I book a flight to United Kingdom?

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

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

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

You could potentially save up to 59% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to United Kingdom flight.

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

TAP AIR PORTUGAL, British Airways, and KLM are the most popular carriers operating from Washington, D.C. Dulles Intl to United Kingdom

Which airlines fly to United Kingdom?

How often are flights from Washington, D.C. to the United Kingdom delayed?

Historically, on average around 21% of flights between Washington, D.C. and United Kingdom have experienced a delay on any given week. The average delay length over the past 12 months has been 158 minutes.

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

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.

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

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.

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

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 16% of their flights experiencing any sort of delay.

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

25 flights are operational daily from Washington, D.C. Dulles Intl Airport to United Kingdom as of November 2025. The most popular departure time for this route is 22:00, with 100% of flights per day taking off in the evening.

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

As of November 2025, 177 flights take off from Washington, D.C. Dulles Intl Airport and land in United Kingdom each week. The most common flight departure day for this route is Thu, with 16% of weekly flights taking off on this day.

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

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

What documentation or ID do you need to fly to United Kingdom?

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