Question 1

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

Accepted Answer

Flying on Finnair is currently your cheapest option to London Heathrow Airport, with prices starting at $455. Additional round-trip tickets that might be worth considering are offered by TAP AIR PORTUGAL and Icelandair, with the lowest prices starting at $485 and $525, respectively. Finnair is currently priced 41% below the average price you’ll pay for this route.

Question 2

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

Accepted Answer

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. to London Heathrow Airport (average of $653). Flying from Washington, D.C. to London Heathrow Airport in June is currently the most expensive (average of $1,150). 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

$673

February

$662

March

$715

April

$692

May

$733

June

$1,150

July

$976

August

$775

September

$745

October

$708

November

$653

December

$672

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

Travelers seeking maximum savings on their Washington, D.C. to London Heathrow Airport flight should consider departing on Saturday at noon when fares are most often at their lowest. Tuesday at noon 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 5/15.

Question 6

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

Accepted Answer

Consider American Airlines, Air Canada or Air France when booking your flight. These represent 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

The most popular flight routes from Washington, D.C. to London Heathrow Airport are Washington, D.C. Dulles Intl - London Heathrow, Baltimore/Washington - London Heathrow and Washington, D.C. Reagan-National - London Heathrow.

Question 8

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

Accepted Answer

Looking at all options, your cheapest flight can be booked for $450. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for $471 on average our data indicates $2,942 when flying from Washington, D.C. to London Heathrow Airport.

Question 9

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

Accepted Answer

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. to London Heathrow Airport on time: American Airlines (75%), Aer Lingus (75%), Finnair (75%).

Question 10

Can I find flights from Washington, D.C. to London Heathrow Airport for under $500 on Cheapflights?

Accepted Answer

Yes, there are multiple flights from Washington, D.C. to London Heathrow Airport for under $500. The cheapest flight booked recently is on Finnair for just $455, but on average you can expect to pay $505.

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 $593.

Question 12

Are there last-minute flights available from Washington, D.C. to London Heathrow Airport for under $700?

Accepted Answer

There are currently 20+ open flights from Washington, D.C. to London Heathrow Airport within the next 7 days for less than $700.

Question 13

Where are the most common layover locations when flying from Washington, D.C. to London Heathrow Airport?

Accepted Answer

Washington, D.C. to London Heathrow Airport flights have a layover in Reykjavik most of the time.

Question 14

Where are the least popular layover locations for Washington, D.C. to London Heathrow Airport flights?

Accepted Answer

Washington, D.C. to London Heathrow Airport flights that have layovers will least frequently stop in Dublin.

Question 15

What are some popular things to do or see while on a layover in Reykjavik?

Accepted Answer

Hallgrímskirkja, Icelandic Phallological Museum, and Harpa are the most popular attractions in Reykjavik if you're in need of something to do during your layover. Hallgrímskirkja, Icelandic Phallological Museum, and Harpa can be accessed by traveling approximately 23.2 mi, 23.5 mi, and 23.3 mi, respectively from Reykjavik Keflavik Intl. Those looking to explore during their layover in Reykjavik can rent a car from Reykjavik Keflavik Intl for about $55 per day.

Question 16

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

Accepted Answer

Leaving on a Tuesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 9% on the overall cost on flights from Washington, D.C. to London Heathrow Airport.

Question 17

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 $735. For sooner than that we have options available in the next 3 days from $790.

Question 18

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

Accepted Answer

Our data shows that October tends to be the cheapest month to fly to London Heathrow Airport from Washington, D.C.. Users have commonly found prices around $719 for the month, but tickets can be as low as $353. Due to multiple factors, prepare for potentially higher prices in June.

Question 19

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 noon. Doing so could potentially save you 7% on the flight price compared to flying in the morning, which is usually more expensive.

Question 20

Accepted Answer

If you’re traveling from Washington, D.C. to London Heathrow Airport, one of the more common airlines traveling that route is Finnair. Washington, D.C. to London Heathrow Airport flights are typically 68% cheaper than other airlines traveling the same route. Flights from Finnair typically cost $672.25 RT. The cheapest Finnair flight found for this route was $565. 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, Finnair flights are 6% more popular than any other airline flying that same route.

Question 21

Accepted Answer

One of the most popular airlines traveling from Washington, D.C. to London Heathrow Airport is TAP AIR PORTUGAL. Flights from TAP AIR PORTUGAL traveling this route typically cost $785.15 RT. This price is typically 62% 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 $406. 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, TAP AIR PORTUGAL flights are 4% more popular than any other airline flying that same route.

Question 22

What does IAD to LHR mean?

Accepted Answer

These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Washington, D.C. Dulles Intl Airport to London Heathrow Airport flight would often be abbreviated as a IAD to LHR flight. 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 23

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 24

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 25

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 vacation packages that include both flights and hotel.

Question 26

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 27

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 28

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 29

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 30

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

Accepted Answer

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Heathrow from Washington, D.C. today with Cheapflights!

Question 31

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

Accepted Answer

Millions of users choose and trust Cheapflights to book the best flight deals from Washington, D.C. to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Question 32

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

Accepted Answer

Certainly. Search results for flights to Heathrow from Washington, D.C. shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Question 33

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

Accepted Answer

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

Popular in	June
Cheapest in	November
Round-trip from	$643
One-way from	$229

Airline	Cheapest	Average	Flexibility	On-time
Norse Atlantic UK	Cheapest$193	Average$651	FlexibilityNo cancel fee	On-timeN/A	Search Norse Atlantic UK flights
PLAY	Cheapest$380	Average$489	FlexibilityNo cancel fee	On-timeN/A	Search PLAY flights
Air Canada	Cheapest$392	Average$780	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Lufthansa	Cheapest$396	Average$789	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
KLM	Cheapest$401	Average$790	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Delta	Cheapest$406	Average$785	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Scandinavian Airlines	Cheapest$427	Average$446	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Aer Lingus	Cheapest$479	Average$684	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
TAP AIR PORTUGAL	Cheapest$480	Average$596	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Icelandair	Cheapest$496	Average$683	FlexibilityNo cancel fee	On-time76%	Search Icelandair 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

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

Cheap flights from Washington, D.C. (WAS) to Heathrow (LHR) from $229

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 10/28. 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 Wednesday or Monday and return on a Thursday

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

Popular in

Cheapest in

Round-trip from

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

Find some of the cheapest Finnair flights traveling from Washington, D.C. to London. Come back soon if you're not finding the exact deal you're looking for.

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

Take a gander at the lowest prices we've found on TAP AIR PORTUGAL flights from Washington, D.C. to London. Check back soon if you're not seeing flights that suit your needs.

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 2,637,452 searches. Prices were last updated on May 16, 2024.

These are some of the best deals we've found on flights to London in 2024 at this time. Check back soon for alternative fares.

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 2,637,452 searches. Data last updated May 16, 2024.

These are some of the best deals we've found on flights to London in 2024 at this time. Check back soon for alternative fares.

Non-stop 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. Search for alternative flights from Washington, D.C. to London by utilizing the search form above.

Washington, D.C. to Heathrow flights leaving soon

Users seeking a last-minute flight from Washington, D.C. to London should consider booking one of these fares. It's wise to confirm all flight details are correct before booking.

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

Take a look at some of the one-way flights we've detected from Washington, D.C. to London. Users can also find round-trip Washington, D.C. to London flights by using the search form above.

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 round-trip flight from Washington, D.C. to Heathrow. Price data was last updated on May 10, 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 round-trip from Washington, D.C. to Heathrow. Price data was last updated on May 12, 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 $234 while a round-trip flight costs $537. Price data was last updated on May 12, 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

See what other customers who have flown with Finnair, TAP AIR PORTUGAL and Icelandair from Washington, D.C. to London have to say. You can also see how each airline compares 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 $500 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 $700?

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?

Where are the most common layover locations when flying from Washington, D.C. to London Heathrow Airport?

What are some popular things to do or see while on a layover in Reykjavik?

Where are the least popular layover locations for Washington, D.C. to London Heathrow Airport flights?

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?

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.

Fly from Washington, D.C. to Heathrow on these airlinesChoose from the following airlines for your flight from Washington, D.C. to Heathrow. Flights are based on user searches made on Cheapflights and were last updated on May 16, 2024.

Choose from the following airlines for your flight from Washington, D.C. to Heathrow. Flights are based on user searches made on Cheapflights and were last updated on May 16, 2024.

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

Popular flight searches

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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 May 16, 2024.

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

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Fly from Washington, D.C. to Heathrow on these airlines
Choose from the following airlines for your flight from Washington, D.C. to Heathrow. Flights are based on user searches made on Cheapflights and were last updated on May 16, 2024.