Question 1

What are the cheapest airlines flying from Washington, D.C. to London Heathrow Airport round-trip?

Accepted Answer

Currently priced at £368, Icelandair will fly you from Washington, D.C. to London Heathrow Airport and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Scandinavian Airlines for as low as £389. You may be able to fly from Washington, D.C. to London Heathrow Airport for 37% less than the average price by searching for these airlines.

Question 2

How recently were the Washington, D.C. to London Heathrow Airport flight deals updated?

Accepted Answer

The Washington, D.C. to London Heathrow Airport flight deals you see on this page were last updated on 25/7.

Question 3

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

Accepted Answer

Booking 29 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Question 4

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

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to London Heathrow Airport (average of £110). Flying from Washington, D.C. to London Heathrow Airport in July is currently the most expensive (average of £159). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 5

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

Accepted Answer

Travellers seeking maximum savings on their Washington, D.C. to London Heathrow Airport flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 6

E

Accepted Answer

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Question 7

E

Accepted Answer

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Question 8

What are the most popular routes from Washington, D.C. to London Heathrow Airport?

Accepted Answer

Most travelers choose Washington, D.C. Dulles Intl - London Heathrow, Baltimore/Washington - London Heathrow or Washington, D.C. Reagan-National - London Heathrow when deciding on the best route from Washington, D.C. to London Heathrow Airport.

Question 9

What are the cheapest flights from Washington, D.C. to London Heathrow Airport?

Accepted Answer

While on average a flight from Washington, D.C. to London Heathrow Airport is generally £566, our data shows the cheapest flight currently is £286. When looking at the most popular route, (Washington, D.C. Dulles Intl - London Heathrow), you can expect to pay £356 for that flight.

Question 10

What are the most reliable airlines from Washington, D.C. to London Heathrow Airport?

Accepted Answer

No one likes to see their flight delayed. When booking a flight from Washington, D.C. to London Heathrow Airport consider choosing Air Canada (56%), Austrian Airlines (56%) or Copa Airlines (56%) as they are the most reliable in getting you off to your destination on time.

Question 11

What are the most popular airlines that fly from Washington, D.C. to London Heathrow Airport?

Accepted Answer

American Airlines, Air France and British Airways are the most popular airlines when flying from Washington, D.C. to London Heathrow Airport.

Question 12

Can I find flights from Washington, D.C. to London Heathrow Airport for under £400 on Cheapflights?

Accepted Answer

Yes, there are multiple flights from Washington, D.C. to London Heathrow Airport for under £400. The cheapest flight booked recently is on Multiple Airlines for just £341, but on average you can expect to pay £373.

Question 13

Are there nonstop flights from Washington, D.C. to London Heathrow Airport for under £500 on Cheapflights?

Accepted Answer

Cheapflights has at least 20 direct flights from Washington, D.C. to London Heathrow Airport under £500. A good price for a nonstop flight from Washington, D.C. to London Heathrow Airport is less than £453.

Question 14

Are there last-minute flights available from Washington, D.C. to London Heathrow Airport for under £600?

Accepted Answer

There are currently 20+ open flights from Washington, D.C. to London Heathrow Airport within the next 7 days for less than £600.

Question 15

What is the cheapest day to fly round-trip from Washington, D.C. to London Heathrow Airport?

Accepted Answer

Departing on a Thursday is a good option for securing a great price. You can expect to save up to 33% when planning your travel around this day of the week.

Question 16

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

Accepted Answer

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 24 days in advance, which can save you up to 15% on flights from Washington, D.C. to London Heathrow Airport compared to booking the week you need them. Waiting 24 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £559. For sooner than that we have options available in the next 3 days from £564.

Question 17

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

Accepted Answer

October is one of the best times of the year to fly to London Heathrow Airport from Washington, D.C.. Prices for October average £559 per person but you can even find prices for as low as £266. The most expensive prices can be found in the month of June. Opting for a October flight can save you 41% on your journey compared to booking in June

Question 18

What is the cheapest time of day to fly from WAS to LHR?

Accepted Answer

It’s typically best to fly out from Washington, D.C. to London Heathrow Airport in the afternoon. Doing so could potentially save you 1% on the flight price compared to flying in the morning, which is usually more expensive.

Question 19

Accepted Answer

One of the most popular airlines travelling from Washington, D.C. to London Heathrow Airport is American Airlines. Flights from American Airlines travelling this route typically cost £803.49 RT. This price is typically 58% cheaper than other airlines that offer Washington, D.C. to London Heathrow Airport flights. When booking this route, the cheapest RT price found was £650. The most popular departure airport in Washington, D.C. when flying to London Heathrow Airport is Washington, D.C. Dulles Intl Airport. The most popular airport to fly into when visiting London Heathrow Airport is London Heathrow Airport. When flying from Washington, D.C. to London Heathrow Airport, American Airlines flights are 8% more popular than any other airline flying that same route.

Question 20

Accepted Answer

Icelandair is one of the most popular airlines used for those travelling from Washington, D.C. to London Heathrow Airport. Flights from Icelandair travelling this route typically cost £812.80 RT. This price is typically 45% more expensive than other airlines that offer Washington, D.C. to London Heathrow Airport flights. When booking this route, the cheapest RT price found was £458. The most popular departure airport in Washington, D.C. when flying to London Heathrow Airport is Washington, D.C. Dulles Intl Airport. The most popular airport to fly into when visiting London Heathrow Airport is London Heathrow Airport. When flying from Washington, D.C. to London Heathrow Airport, Icelandair flights are 6% more popular than any other airline flying that same route.

Question 21

What does IAD to LHR mean?

Accepted Answer

This is defined as Washington, D.C. Dulles Intl Airport (IAD) and London Heathrow Airport (LHR). Codes like London Heathrow Airport are often used to just call airports uniquely. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Baltimore/Washington Airport (BWI), Washington, D.C. Reagan-National Airport (DCA).

Question 22

Can I find deals for flights from Washington, D.C. to Heathrow that include extra baggage allowance?

Accepted Answer

The amount of baggage you can bring on your Washington, D.C. to Heathrow flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

Question 23

Can I find deals on flights from Washington, D.C. to Heathrow with specific airlines?

Accepted Answer

Yes, Cheapflights allows you to browse and filter Washington, D.C. to Heathrow flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

Question 24

Can I find deals for flights from Washington, D.C. to Heathrow that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Washington, D.C. to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 25

How can I find direct flights from Washington, D.C. to Heathrow?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Heathrow.

Question 26

Can I find deals for business class flights from Washington, D.C. to Heathrow?

Accepted Answer

Yes. Cheapflights offers flight deals from Washington, D.C. to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 27

Can I find deals for flights from Washington, D.C. to Heathrow that allow pets onboard?

Accepted Answer

Many airlines flying from Washington, D.C. to Heathrow offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

Question 28

Can I find deals on last-minute flights from Washington, D.C. to Heathrow?

Accepted Answer

Yes, you can often find last-minute deals on Washington, D.C. to Heathrow flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

Question 29

How does Cheapflights help users find flights from Washington, D.C. to Heathrow?

Accepted Answer

When you search for this flight from Washington, D.C. to Heathrow, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Question 30

Why should you use Cheapflights to find cheap flight tickets from Washington, D.C. to Heathrow?

Accepted Answer

Cheapflights helps you find that perfect flight to Heathrow from Washington, D.C. by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Question 31

Can Cheapflights find flights from Washington, D.C. to Heathrow with no change fees?

Accepted Answer

Users can book flights with no change fees policies with our dedicated filters. Book flights from Washington, D.C. to Heathrow flexibly with Cheapflights today.

Question 32

Can Cheapflights notify me if prices for flights from Washington, D.C. to Heathrow become cheaper?

Accepted Answer

Not ready to book yet? You can track prices for flights from Washington, D.C. to Heathrow on Cheapflights with our Price Alert feature and get notified when better prices are available.

Round-trip from	£341
One-way from	£144
Popular in	June
Cheapest in	November

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	Cheapest£356	Average£631	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Aer Lingus	Cheapest£372	Average£490	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Icelandair	Cheapest£379	Average£570	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Norse Atlantic UK	Cheapest£439	Average£666	FlexibilityNo cancel fee	On-timeN/A	Search Norse Atlantic UK flights
Lufthansa	Cheapest£439	Average£564	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£445	Average£655	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
British Airways	Cheapest£450	Average£629	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Iberia	Cheapest£490	Average£650	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
KLM	Cheapest£505	Average£624	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Air France	Cheapest£510	Average£650	FlexibilityNo cancel fee	On-time77%	Search Air France flights

0%of flight departures	Early morningMidnight to 6 am
0%of flight departures	Morning6 am to noon
16%of flight departures	AfternoonNoon to 6 pm
84%of flight departures	Evening6 pm to midnight

Monday	30daily flights
Tuesday	30daily flights
Wednesday	30daily flights
Thursday	30daily flights
Friday	30daily flights
Saturday	24daily flights
Sunday	30daily flights

Cheap flights from Washington, D.C. to London Heathrow Airport from £144

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/11. Fares are subject to change and may not be available on all flights or dates of travel.

The best prices from Washington, D.C. to London Heathrow are usually found in November or October, booked 29 days in advance, depart on a Friday or Saturday and return on a Sunday

Cheap flight deals from Washington, D.C. to Heathrow

Round-trip from

One-way from

Popular in

Cheapest in

What is the cheapest day to fly round-trip from Washington, D.C. to London Heathrow Airport?

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

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

What is the cheapest time of day to fly from WAS to LHR?

Cheap American Airlines flights from Washington, D.C. to Heathrow

Consider these cheap American Airlines flights we've found departing from Washington, D.C. to London. Make sure to check back often as deals are often changing.

Cheap Icelandair flights from Washington, D.C. to Heathrow

To aid your search, here are some of the cheapest Icelandair flights we've found from Washington, D.C. to London. Deals frequently update to provide users with more options.

Cheap Washington, D.C. to Heathrow flights in July & August 2024

Find cheap flight options from Washington, D.C. to Heathrow specifically for the months of July and August 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 1,000,913 searches. Prices were last updated on 26 July 2024.

The lowest fares we've come across on flights travelling from Washington, D.C. to London in July and August 2024. If these deals don't appeal to you, be sure to come back soon for more options.

Washington, D.C. to Heathrow 2024 flight deals

Discover exclusive flight deals for travel between Washington, D.C. and Heathrow in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 1,000,913 searches. Data last updated 26 July 2024.

The lowest fares we've come across on flights travelling from Washington, D.C. to London in July and August 2024. If these deals don't appeal to you, be sure to come back soon for more options.

Direct flights to Heathrow from Washington, D.C.

To help reduce your travel time, choose from one of these non-stop flights from Washington, D.C. to London. If you're looking for other options for flights from Washington, D.C. to London, make sure to update the search form at the top of page.

Washington, D.C. to Heathrow flights leaving soon

Have a look at some of the last-minute flights available departing from Washington, D.C. to London. It's wise to confirm all flight details are correct before booking.

One-way flights to Heathrow from Washington, D.C.

Some of the best available deals we've found on one-way flights from Washington, D.C. to London. Users in need of a round-trip flight from Washington, D.C. to London instead should update the search form at the top of page.

Find flights from Washington, D.C. to Heathrow within your budget

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

Use this chart to determine the optimal time to book a return flight from Washington, D.C. to Heathrow. Price data was last updated on 23 July 2024.

Booking 29 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Use this chart to determine the cheapest time to fly return from Washington, D.C. to Heathrow. Price data was last updated on 21 July 2024.

Best time to book a flight from Washington, D.C. to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Washington, D.C. with our price prediction graph.

Temperature and rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature and rainfall totals by month.

Reviews of airlines servicing Heathrow

Get a feel of what it's like to fly with American Airlines, Icelandair and British Airways from Washington, D.C. to London by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find flights from Washington, D.C. to London Heathrow Airport for under £400 on Cheapflights?

Are there nonstop flights from Washington, D.C. to London Heathrow Airport for under £500 on Cheapflights?

Are there last-minute flights available from Washington, D.C. to London Heathrow Airport for under £600?

What are the cheapest airlines flying from Washington, D.C. to London Heathrow Airport round-trip?

What are the most popular routes from Washington, D.C. to London Heathrow Airport?

What are the most reliable airlines from Washington, D.C. to London Heathrow Airport?

What are the cheapest flights from Washington, D.C. to London Heathrow Airport?

What does IAD to LHR mean?

Can I find deals for flights from Washington, D.C. to Heathrow that include extra baggage allowance?

Can I find deals on flights from Washington, D.C. to Heathrow with specific airlines?

Can I find deals for flights from Washington, D.C. to Heathrow that include hotel bookings?

How can I find direct flights from Washington, D.C. to Heathrow?

Can I find deals for business class flights from Washington, D.C. to Heathrow?

Can I find deals for flights from Washington, D.C. to Heathrow that allow pets onboard?

Can I find deals on last-minute flights from Washington, D.C. to Heathrow?

How recently were the Washington, D.C. to London Heathrow Airport flight deals updated?

What are the most popular airlines that fly from Washington, D.C. to London Heathrow Airport?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington, D.C. to HeathrowSee prices for flight routes from nearby airports that may be better suited for you.

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Washington, D.C. to Heathrow

Popular flight searches

Check out other popular destinations found by fellow travellers in 2024

Search flights from Washington, D.C. to Heathrow by cabin class

Find flights from Washington, D.C. to Heathrow, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Hourly flight availability from Washington, D.C. to Heathrow

Find hourly flight availability from Washington, D.C. to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 July 2024.

Weekly flight availability from Washington, D.C. to Heathrow

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How does Cheapflights help users find flights from Washington, D.C. to Heathrow?

Why should you use Cheapflights to find cheap flight tickets from Washington, D.C. to Heathrow?

Can Cheapflights find flights from Washington, D.C. to Heathrow with no change fees?

Can Cheapflights notify me if prices for flights from Washington, D.C. to Heathrow become cheaper?

Alternative routes for Washington, D.C. to Heathrow
See prices for flight routes from nearby airports that may be better suited for you.