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Cheap flights from Washington Dulles Intl (IAD) to Heathrow (LHR)

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The best prices from Washington Dulles Intl to Heathrow are usually found in October or November, booked 42 days in advance, depart on a Monday or Tuesday and return on a Wednesday

How to find the cheapest flight from
Washington Dulles Intl (IAD) to Heathrow (LHR)

IAD - LHR
Price
$616 - $874
LHR
Temperature
46.4 - 75.2 °F
LHR
Rainfall
1.5 - 2.6 inches

Popular in

June

High demand for flights, 19% potential price rise

Cheapest in

October

Best time to find cheap flights, 13% potential price drop

Round-trip from

$616

From Washington Dulles Intl to Heathrow

One-way from

$197

One-way flight from Washington Dulles Intl to Heathrow

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Washington Dulles Intl to Heathrow?

Leaving on a Sunday 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 10% on the overall cost on flights from Washington Dulles Intl to Heathrow.

How far in advance should I book a flight from Washington Dulles Intl to Heathrow?

To save on the cost of your flight from Washington Dulles Intl to Heathrow, book at least 61 days before your planned departure. Booking around this time can save you about 76% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $602 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $805.

What is the cheapest month to fly from Washington Dulles Intl to Heathrow?

March can be a great time to fly to Heathrow from Washington Dulles Intl with a flight ticket averaging about $453. Cheapflights users have found deals in the month of March for as cheap as $327. The most expensive prices can be found in the month of December.

When is the cheapest time to fly from Washington Dulles Intl to Heathrow (IAD - LHR)?

It’s optimal to fly from Washington Dulles Intl to Heathrow in the evening. By choosing this option you can save up to 16% on the cost of your flight, compared to a flight at noon.

Cheap flights from Washington Dulles Intl to Heathrow in November, December 2020

The best prices found for IAD to LHR flights for November, December
8 Dec - 4 Jan
$423pp
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl
29 Dec - 7 Jan
$425pp
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl
8 Dec - 21 Dec
$428pp
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl

Washington Dulles Intl to Heathrow 2021 flight deals

Cheap flights to Heathrow from Washington Dulles Intl found for next year
8 Dec - 4 Jan
$423pp
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl
29 Dec - 7 Jan
$425pp
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl
8 Dec - 21 Dec
$428pp
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl

Non-stop flights to Heathrow from Washington Dulles Intl

Save time with Washington Dulles Intl to Heathrow direct flight deals
4 Jan - 4 Feb
$584pp
IAD
Washington Dulles Intl
Virgin Atlantic
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Virgin Atlantic
Non-Stop
IAD
Washington Dulles Intl
27 Dec - 10 Jan
$586pp
IAD
Washington Dulles Intl
Multiple Airlines
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Lufthansa
Non-Stop
IAD
Washington Dulles Intl
8 Dec - 11 Jan
$605pp
IAD
Washington Dulles Intl
Lufthansa
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Lufthansa
Non-Stop
IAD
Washington Dulles Intl

Last minute flights from Washington Dulles Intl to Heathrow

Late deals on round-trip flights to Heathrow from Washington Dulles Intl, departing today and this week
5 Dec - 11 Dec
$432pp
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl
5 Dec - 22 Dec
$434pp
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl
5 Dec - 14 Jan
$448pp
IAD
Washington Dulles Intl
Multiple Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
   
2 STOPS
IAD
Washington Dulles Intl

One-way flights to Heathrow from Washington Dulles Intl

The cheapest one-way flights from Washington Dulles Intl to Heathrow
2:55 pm - 11:55 am
Multiple Airlines
2 Stops
40h 00m
IAD - LHR
Multiple Airlines
$197
Kiwi.com
11:42 am - 6:05 am
Virgin Atlantic
1 Stop
13h 23m
IAD - LHR
Virgin Atlantic
$215
Travel2Be
5:35 pm - 5:40 am
Finnair
Nonstop
7h 05m
IAD - LHR
Finnair
$222
SmartFares

Related info for your journey

Useful info, stats and facts about Washington Dulles Intl to Heathrow flights.

Flight FAQs

From Washington Dulles Intl to Heathrow

Are flight prices decreasing from Washington Dulles Intl to Heathrow due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Washington Dulles Intl and Heathrow for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Washington Dulles Intl to London Heathrow to control the spread of COVID-19?

Delta is one of the many airlines that have implemented additional safety measures to control the spread of COVID-19. New policies for travelers booking flights from Washington Dulles Intl to London Heathrow include masks being provided and required on board, daily cleaning and sanitization, use of HEPA filters, pre-flight testing for antibodies and symptoms, and socially distanced seating (for a limited time). Keep in mind that policies will vary by airline.

Which airlines flying from Washington Dulles Intl to London Heathrow have flexible cancellations due to COVID-19?

United Airlines, British Airways, and Virgin Atlantic are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Washington Dulles Intl to Heathrow for under $500 on Cheapflights?

Yes, there are multiple flights from Washington Dulles Intl to Heathrow for under $500. The cheapest flight booked recently is on Multiple Airlines for just $409, but on average you can expect to pay $428.

Are there nonstop flights from Washington Dulles Intl to Heathrow for under $600 on Cheapflights?

Cheapflights has at least 20 direct flights from Washington Dulles Intl to Heathrow under $600. A good price for a nonstop flight from Washington Dulles Intl to Heathrow is less than $618.

Are there last-minute flights available from Washington Dulles Intl to Heathrow for under $500?

There are currently 20+ open flights from Washington Dulles Intl to Heathrow within the next 7 days for less than $500.

Does it rain more in Washington Dulles Intl or Heathrow?

When traveling, we recommend packing in preparation to handle common weather conditions. The rainfall in Washington Dulles Intl is typically greater than that of Heathrow. We can gather that this will continue over the next 14 days.

Is Washington Dulles Intl weather warmer or cooler than Heathrow?

Temperatures around the 88 °F's can be experienced in July. The weather in Heathrow is colder than in Washington Dulles Intl. Plan for potential changes in flight availability as peak weather approaches in this location.

How long is the flight from Washington Dulles Intl to Heathrow?

There are many flights that can get you from Washington Dulles Intl to Heathrow in 10h 10m. Fly via Icelandair or TAP AIR PORTUGAL to get the fastest option. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from Washington Dulles Intl to Heathrow round-trip?

According to our current data, Icelandair ($417), and TAP AIR PORTUGAL ($423) offers the cheapest pricing from Washington Dulles Intl to Heathrow. These flights start at 41% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from Washington Dulles Intl to Heathrow one-way?

The cheapest airlines for a one-way flight from Washington Dulles Intl to Heathrow are TAP AIR PORTUGAL ($155), Virgin Atlantic ($213), and Air Canada ($218).

Alternative routes for Washington Dulles Intl to Heathrow

Destination information for Heathrow

Things to know before you go. Useful info for your trip from Washington Dulles Intl to Heathrow
Today's exchange rate
$1 = £0.75
Average temperature for November in Heathrow
51.8 °F
Avg rainfall for November in Heathrow
2.4 ″

Airports servicing Washington

Airports servicing London

Top 10 airlines from Washington Dulles Intl to Heathrow

The chart below displays the airlines Cheapflights users traveling from Washington Dulles Intl to Heathrow choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.

Airline Cheapest Average Flexibility On-time COVID-19 safety
SWISS
$473 $615 No change fee 79%
WOW air
$410 $625 No cancel fee N/A

We couldn't confirm the COVID-19 safety measures taken by WOW air. Please check directly on their website for additional information.

KLM
$481 $632 No change fee 75%
SAS
$355 $652 No change fee 77%
Air France
$492 $705 No change fee 77%
Finnair
$503 $723 No change fee 76%
Iberia
$520 $734 No change fee 77%
TAP AIR PORTUGAL
$504 $765 No change fee N/A
Delta
$415 $780 No cancel fee N/A
American Airlines
$500 $806 No cancel fee 71%

Hourly flight availability from Washington Dulles Intl to Heathrow

Afternoon Noon to 6 PM 60% of IAD to LHR departures
Evening 6 PM to midnight 40% of IAD to LHR departures
Early morning Midnight to 6 AM 0% of IAD to LHR departures
Morning 6 AM to noon 0% of IAD to LHR departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Washington Dulles Intl to Heathrow
Sunday
0 flights
Monday
5 daily flights
Tuesday
5 daily flights
Wednesday
5 daily flights
Thursday
0 flights
Friday
0 flights
Saturday
5 daily flights
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