Question 1

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

Accepted Answer

Currently priced at £360, Finnair will fly you from Washington, D.C. to London Heathrow Airport and back. In addition to Finnair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from TAP AIR PORTUGAL and Scandinavian Airlines - these airlines can fly you to your destination from £382 and £396, respectively. You may be able to fly from Washington, D.C. to London Heathrow Airport for 41% less than the average price by searching for these airlines.

Question 2

When is the best time 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 £165). 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.

January

£87

February

£98

March

£94

April

£104

May

£108

June

£130

July

£131

August

£114

September

£109

October

£125

November

£91

December

£96

Question 3

When is the best time to book a flight from Washington, D.C. to London Heathrow Airport?

Accepted Answer

Booking 50 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

When is the cheapest time 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 Sunday afternoons when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 5

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 15/5.

Question 6

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 7

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 8

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 £1,266, our data shows the cheapest flight currently is £339. When looking at the most popular route, (Washington, D.C. Dulles Intl - London Heathrow), you can expect to pay £373 for that flight.

Question 9

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 American Airlines (80%), Aer Lingus (80%) or Finnair (80%) as they are the most reliable in getting you off to your destination on time.

Question 10

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 Finnair for just £360, but on average you can expect to pay £393.

Question 11

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 £533.

Question 12

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 13

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

Accepted Answer

Departing on a Friday is a good option for securing a great price. You can expect to save up to 20% when planning your travel around this day of the week.

Question 14

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 17% 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 £582. For sooner than that we have options available in the next 3 days from £625.

Question 15

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 £569 per person but you can even find prices for as low as £279. 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 16

When is the cheapest time to fly from Washington, D.C. to London Heathrow Airport (WAS - LHR)?

Accepted Answer

It’s typically best to fly out from Washington, D.C. to London Heathrow Airport at midday. Doing so could potentially save you 31% on the flight price compared to flying in the morning, which is usually more expensive.

Question 17

Accepted Answer

TAP AIR PORTUGAL is one of the most popular airlines used for those travelling from Washington, D.C. to London Heathrow Airport. Washington, D.C. to London Heathrow Airport flights are typically 51% cheaper than other airlines traveling the same route. Flights from TAP AIR PORTUGAL typically cost £752.14 RT. The cheapest TAP AIR PORTUGAL flight found for this route was £659. Washington, D.C. Dulles Intl Airport is the most common Washington, D.C. airport to take off from when flying to London Heathrow Airport. London Heathrow Airport is the most popular arrival airport in London Heathrow Airport. When flying from Washington, D.C. to London Heathrow Airport, TAP AIR PORTUGAL flights are 8% more popular than any other airline flying that same route.

Question 18

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 £812.86 RT. This price is typically 50% 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 £450. 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 7% more popular than any other airline flying that same route.

Question 19

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 20

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 21

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 22

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 23

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 24

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 25

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 26

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 27

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 28

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 29

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 30

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.

Popular in	June
Cheapest in	November
Average price	£661
Round-trip from	£69

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	Cheapest£356	Average£643	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Icelandair	Cheapest£382	Average£551	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Aer Lingus	Cheapest£385	Average£602	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Norse Atlantic UK	Cheapest£447	Average£678	FlexibilityNo cancel fee	On-timeN/A	Search Norse Atlantic UK flights
Lufthansa	Cheapest£453	Average£575	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£453	Average£636	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
British Airways	Cheapest£494	Average£665	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Iberia	Cheapest£503	Average£760	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
Air France	Cheapest£520	Average£663	FlexibilityNo cancel fee	On-time77%	Search Air France flights
KLM	Cheapest£522	Average£595	FlexibilityNo cancel fee	On-time75%	Search KLM flights

1%of flight departures	Early morningMidnight to 6 am
0%of flight departures	Morning6 am to noon
40%of flight departures	AfternoonNoon to 6 pm
59%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 £179

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 6/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.

The best prices from Washington, D.C. to London Heathrow are usually found in November or October, booked 50 days in advance, depart on a Saturday or Monday and return on a Wednesday

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

Popular in

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Average price

Round-trip from

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?

When is the cheapest time to fly from Washington, D.C. to London Heathrow Airport (WAS - LHR)?

Cheap TAP AIR PORTUGAL flights from Washington, D.C. to Heathrow

Consider these cheap TAP AIR PORTUGAL 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 May & June 2024

Find cheap flight options from Washington, D.C. to Heathrow specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 849,850 searches. Prices were last updated on 15 May 2024.

The lowest fares we've come across on flights travelling from Washington, D.C. to London in May and June 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 849,850 searches. Data last updated 15 May 2024.

The lowest fares we've come across on flights travelling from Washington, D.C. to London in May and June 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

When is the best time to 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 10 May 2024.

Booking 50 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.

When is the cheapest time 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 12 May 2024.

Average price of flights to Heathrow by month

Plan your trip from Washington, D.C. to Heathrow by taking into account the cheapest months to travel. The average price of a one-way flight from Washington, D.C. to Heathrow is currently £182 while a return flight costs £421. Price data was last updated on 12 May 2024.

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 TAP AIR PORTUGAL, Icelandair and Virgin Atlantic 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 popular airlines that fly 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?

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

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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 15 May 2024.

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

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Alternative routes for Washington, D.C. to Heathrow
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