Question 1

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 United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $772 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from United Kingdom for as low as $693 on momondo.

Question 2

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

Accepted Answer

There are 4 cabin classes available to choose from on United Kingdom 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 3

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

Accepted Answer

Historically, on average around 17% of flights between United Kingdom 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 4

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

Accepted Answer

In the evening is the cheapest time of day to fly from United Kingdom to Washington, D.C. when you can find flight prices for as low as $762. Flying to Washington, D.C. in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $852. Of course, these prices can vary depending on the time of year and what airport you fly to.

Question 5

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

Accepted Answer

United Airlines, Virgin Atlantic, and Air Canada are the most popular carriers operating from United Kingdom to Washington, D.C.

Question 6

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

Accepted Answer

As of December 2025, there are 30 flights per day flying from United Kingdom to Washington, D.C.. The most common time of day flights depart is 4:00PM, with 100% of flights taking off in the afternoon.

Question 7

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

Accepted Answer

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

Question 8

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 United Kingdom is on a Thursday. momondo users have found tickets for Thursday departures for as low as $758. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from United Kingdom to Washington, D.C. for around $919.

Question 9

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

Accepted Answer

As of December 2025, there are 214 flights per week flying from United Kingdom to Washington, D.C.. The most common day of the week flights depart is Wed, with 16% of flights taking off on this day.

Question 10

What airlines fly to Washington, D.C.?

Accepted Answer

British Airways, Aer Lingus and United Airlines are the top three most popular airlines that fly to Washington, D.C. from United Kingdom according to our data. British Airways is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 12 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

Question 11

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

Accepted Answer

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

Question 12

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

Accepted Answer

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

Question 13

How long does it take to fly to Washington, D.C.?

Accepted Answer

Flight times from United Kingdom to Washington, D.C. vary, but if you’re flying out of Edinburgh and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 8h 05m on average. Another popular route from United Kingdom to Washington, D.C. is flying from London to Washington, D.C. Dulles Intl Airport, which will take roughly 9h 50m. Keep in mind that layovers or delays could extend your travel time.

Question 14

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

Accepted Answer

You could potentially save up to 33% on your flight if you consider stops on a United Kingdom to Washington, D.C. flight.

Question 15

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

Accepted Answer

The month of February is, on average, the cheapest month to fly to Washington, D.C. from United Kingdom, with most prices found around $623. If you’re not able to fly to Washington, D.C. in February, then September is your next best option. Flight prices from United Kingdom to Washington, D.C. during September average around $641.

Question 16

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

Accepted Answer

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

Question 17

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

Accepted Answer

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

Question 18

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

Accepted Answer

As of December 2025, there are 12 operators available to choose from for flights from United Kingdom to Washington, D.C..

Question 19

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

Accepted Answer

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United Kingdom to Washington, D.C..

Question 20

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

Accepted Answer

The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best Price Found	$667
Fastest flight time	8h 05m
Direct flights	Every day
Airports in Washington, D.C.	2 airports

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $320	Free Cancellation	Rating 7.9 8,010 reviews	Search Delta flights
Scandinavian Airlines	PriceFrom $390	Free Cancellation	Rating 7.4 1,592 reviews	Search Scandinavian Airlines flights
Austrian Airlines	PriceFrom $431	Free Cancellation	Rating 7.6 875 reviews	Search Austrian Airlines flights
TAP AIR PORTUGAL	PriceFrom $473	Free Cancellation	Rating 7.1 2,082 reviews	Search TAP AIR PORTUGAL flights
Icelandair	PriceFrom $510	Free Cancellation	Rating 7.0 586 reviews	Search Icelandair flights
American Airlines	PriceFrom $562	Free Cancellation	Rating 7.2 11,046 reviews	Search American Airlines flights
United Airlines	PriceFrom $567	Free Cancellation	Rating 7.4 9,065 reviews	Search United Airlines flights
British Airways	PriceFrom $592	Free Cancellation	Rating 6.7 7,562 reviews	Search British Airways flights
Air Canada	PriceFrom $635	Free Cancellation	Rating 7.1 10,502 reviews	Search Air Canada flights
Lufthansa	PriceFrom $649	Free Cancellation	Rating 6.8 7,616 reviews	Search Lufthansa flights

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How to get the cheapest flight ticket from United Kingdom to Washington, D.C.

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

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

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

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

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

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

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

There are 4 cabin classes available to choose from on United Kingdom 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.

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

You could potentially save up to 33% on your flight if you consider stops on a United Kingdom to Washington, D.C. flight.

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

United Airlines, Virgin Atlantic, and Air Canada are the most popular carriers operating from United Kingdom to Washington, D.C.

What airlines fly to Washington, D.C.?

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

Historically, on average around 17% of flights between United Kingdom 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.

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

Generally, flights departing in the evening tend to experience fewer delays. Flights in the morning 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 which experiences the fewest number of 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 the United Kingdom to Washington, D.C. flights?

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

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

As of December 2025, there are 30 flights per day flying from United Kingdom to Washington, D.C.. The most common time of day flights depart is 4:00PM, with 100% of flights taking off in the afternoon.

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

As of December 2025, there are 214 flights per week flying from United Kingdom to Washington, D.C.. The most common day of the week flights depart is Wed, with 16% of flights taking off on this day.

How long does it take to fly to Washington, D.C.?

Cheap United Kingdom to Washington, D.C. flight deals and tips

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

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

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

What is the most popular plane model from United Kingdom to Washington, D.C.?

Best airlines flying from United Kingdom to Washington, D.C.

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