Cheap flights from Heathrow to Washington Dulles Intl

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

All the information you need to plan the best LHR to IAD flight in 2021: compare Heathrow to Washington Dulles Intl flight prices with the expected peak season, weather and rainfall in Washington Dulles Intl.
LHR - IAD
Price
£395 - £638
IAD
Temperature
8 - 31 °C
IAD
Rainfall
64 - 113 mm

Popular in

August

High demand for flights, 23% potential price rise

Cheapest in

November

Best time to find cheap flights, 20% potential price drop

Round-trip from

£395

From Heathrow to Washington Dulles Intl

One-way from

£154

One-way flight from Heathrow to Washington Dulles Intl

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
How far in advance should I book a flight from Heathrow to Washington Dulles Intl?

To save up to 27% on this flight, we recommend booking at least 34 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Heathrow to Washington Dulles Intl from £520 1-2 weeks out and tickets from £607 for flights departing within the next 72 hours.

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

The best pricing can be found in the month of February. Prices to Washington Dulles Intl from Heathrow average £476. You can even find prices in February for less than £476, as users have found deals to Washington Dulles Intl from as low as £318. The month of July appears to be one of the more expensive times to travel to Washington Dulles Intl from Heathrow. Flying in the targeted month can save you up to 21%.

Cheap flights from Heathrow to Washington Dulles Intl in June, July 2021

The best prices found for LHR to IAD flights in June, July
5 Jul - 26 Jul
£312pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
20 Jun - 24 Aug
£362pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
5 Jul - 7 Sep
£375pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow

Heathrow to Washington Dulles Intl 2021 flight deals

Cheap flights to Washington Dulles Intl from Heathrow found for this year
8 Sep - 22 Sep
£303pp
LHR
London Heathrow
Icelandair
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Icelandair
 
1 STOP
LHR
London Heathrow
5 Jul - 26 Jul
£312pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
17 Nov - 27 Nov
£329pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Multiple Airlines
   
2 STOPS
LHR
London Heathrow

Direct flights to Washington Dulles Intl from Heathrow

Save time with Heathrow to Washington Dulles Intl direct flight deals
17 Nov - 8 Dec
£496pp
LHR
London Heathrow
Virgin Atlantic
Direct
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Virgin Atlantic
Direct
LHR
London Heathrow
1 Nov - 30 Nov
£498pp
LHR
London Heathrow
Virgin Atlantic
Direct
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Virgin Atlantic
Direct
LHR
London Heathrow
24 Nov - 15 Dec
£505pp
LHR
London Heathrow
Virgin Atlantic
Direct
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Virgin Atlantic
Direct
LHR
London Heathrow

Last-minute flights from Heathrow to Washington Dulles Intl

Late deals on return flights to Washington Dulles Intl from Heathrow, departing today and this week
27 Jun - 19 Jul
£443pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
24 Jun - 13 Jul
£461pp
LHR
London Heathrow
Icelandair
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Icelandair
 
1 STOP
LHR
London Heathrow
26 Jun - 10 Jul
£467pp
LHR
London Heathrow
Icelandair
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Icelandair
 
1 STOP
LHR
London Heathrow

One-way flights to Washington Dulles Intl from Heathrow

The cheapest one-way flights from Heathrow to Washington Dulles Intl
13:00 - 16:15
British Airways
Direct
8h 15m
LHR - IAD
British Airways
£155
Netflights
12:35 - 10:40
TAP AIR PORTUGAL
1 stop
27h 05m
LHR - IAD
TAP AIR PORTUGAL
05:15 - 10:40
Multiple Airlines
3 stops
34h 25m
LHR - IAD
Multiple Airlines
£306
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Heathrow</span> to <span class="emphasized">Washington Dulles Intl</span> flights.

Flight FAQs

From Heathrow to Washington Dulles Intl

Are flight prices decreasing from Heathrow to Washington Dulles Intl 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 Heathrow and Washington Dulles Intl 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 London Heathrow to Washington Dulles Intl to control the spread of COVID-19?

New policies can now be found on Alitalia to help keep travellers safe while flying. New policies for travellers booking flights from London Heathrow to Washington Dulles Intl include masks being provided and required on board, daily cleaning and sanitisation, 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 London Heathrow to Washington Dulles Intl have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like Virgin Atlantic, United Airlines, and Aer Lingus flying from London Heathrow to Washington Dulles Intl have implemented new flexible cancellation policies.

Can I find flights from Heathrow to Washington Dulles Intl for under £355 on Cheapflights?

Yes, there are multiple flights from Heathrow to Washington Dulles Intl for under £355. The cheapest flight booked recently is on Icelandair for just £303, but on average you can expect to pay £357.

Are there direct flights from Heathrow to Washington Dulles Intl for under £497 on Cheapflights?

Cheapflights has 20 direct flights from Heathrow to Washington Dulles Intl under £497. A good price for a direct flight from Heathrow to Washington Dulles Intl is less than £531.

Are there last-minute flights available from Heathrow to Washington Dulles Intl for under £497?

There are currently 20+ open flights from Heathrow to Washington Dulles Intl within the next 7 days for less than £497.

Does it rain more in Heathrow or Washington Dulles Intl?

In Heathrow, there will be less rainfall in Heathrow compared to Washington Dulles Intl over the next 19 days.

Is Heathrow weather warmer or cooler than Washington Dulles Intl?

You can imagine temperatures to be in the 31 °C range in July. The weather in Washington Dulles Intl is generally hotter than Heathrow's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.

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

A quick flight from Heathrow to Washington Dulles Intl can take about 8h 25m. United Airlines provides one of the quickest options available for as low as £393. Both multi-stop and direct flights can be found to your destination and back.

What are the cheapest airlines to flying from Heathrow to Washington Dulles Intl return?

Our cheapest airline available from Heathrow to Washington Dulles Intl is Icelandair. Our recent data shows that you can find tickets from as low as £304 on this airline. Additional options worth looking into are TAP AIR PORTUGAL and Virgin Atlantic, starting at £312 and £336 round-trip. Icelandair is 38% cheaper than the average price of flights available within the next 90 days to this destination.

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

To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at £152. British Airways is not the only option available. At the moment, TAP AIR PORTUGAL is another option, for £216.

Alternative routes for Heathrow to Washington Dulles Intl

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

Destination information for Washington Dulles Intl

Things to know before you go - useful duration and weather info for your trip from Heathrow to Washington Dulles Intl.
Today's exchange rate
£1 = $1.41
Average temperature for June in Washington Dulles Intl
29.0 °C
Avg rainfall for June in Washington Dulles Intl
108.0 mm

Airports servicing London

Airports servicing Washington

Top 10 airlines flying from Heathrow to Washington Dulles Intl

The chart below displays the airlines Cheapflights users travelling from Heathrow to Washington Dulles Intl 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
TAP AIR PORTUGAL
£420 £568 No cancel fee N/A
Search TAP AIR PORTUGAL flights
Air Canada
£394 £653 No cancel fee 67%
Search Air Canada flights
Icelandair
£491 £714 No cancel fee 76%
Search Icelandair flights
SAS
£414 £725 No cancel fee 77%
Search SAS flights
American Airlines
£477 £758 No cancel fee 71%
Search American Airlines flights
Brussels Airlines
£479 £779 No cancel fee N/A
Search Brussels Airlines flights
KLM
£480 £790 No cancel fee 75%
Search KLM flights
Finnair
£500 £815 No cancel fee 76%
Search Finnair flights
Lufthansa
£474 £867 No cancel fee 76%
Search Lufthansa flights
Delta
£458 £870 No cancel fee N/A
Search Delta flights

Hourly flight availability from Heathrow to Washington Dulles Intl

See what time of day planes typically take off from Heathrow towards Washington Dulles Intl.
Morning 6 AM to midday 58% of flight departures
Afternoon Midday to 6 PM 41% of flight departures
Early morning Midnight to 6 AM 1% of flight departures
Evening 6 PM to midnight 0% of flight departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Heathrow to Washington Dulles Intl
See how many times per day planes take to the skies headed from Heathrow to Washington Dulles Intl.
Sunday
12 daily flights
Monday
12 daily flights
Tuesday
12 daily flights
Wednesday
12 daily flights
Thursday
12 daily flights
Friday
12 daily flights
Saturday
12 daily flights
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