Cheap flights from London to Dulles Intl

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London (LON)
Washington, D.C. (IAD)
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How to find the cheapest flight from
London (LON) to Dulles Intl (IAD)

All the information you need to plan the best LON to IAD flight in 2022: compare London to Dulles Intl flight prices with the expected peak season, weather and rainfall in Dulles Intl.
LON - IAD
Price
£579 - £835
IAD
Temperature
2 - 27 °C
IAD
Rainfall
66 - 102 mm

Popular in

August

High demand for flights, 18% potential price rise

Cheapest in

February

Best time to find cheap flights, 15% potential price drop

Round-trip from

£472

From London (LON) to Washington, D.C. Dulles Intl

One-way from

£278

One-way flight from London (LON) to Washington, D.C. Dulles Intl

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
When is the cheapest time to fly from London to Washington, D.C. Dulles Intl Airport (LON - IAD)?

When flying from London to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Travelers have found it’s best to book a flight 34 days in advance to save up to 27% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 34 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London to Washington, D.C. Dulles Intl Airport 1-2 weeks in advance for as low as £597, or £697 for flights within the next 24 hours.

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

February can be a great time to fly to Washington, D.C. Dulles Intl Airport from London with a flight ticket averaging about £546. Cheapflights users have found deals in the month of February for as cheap as £365. The most expensive prices can be found in the month of July.

Cheap flights from London to Dulles Intl in May, June 2022

The best prices found for LON to IAD flights in May, June
23 Jun - 26 Jun
£423pp
STN
London Stansted
Multiple airlines
   
2 STOPS
IAD
Washington, D.C. Dulles Intl
IAD
Washington, D.C. Dulles Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted
23 Jun - 26 Jun
£428pp
LTN
London Luton
Multiple airlines
   
2 STOPS
IAD
Washington, D.C. Dulles Intl
IAD
Washington, D.C. Dulles Intl
Multiple Airlines
   
2 STOPS
LTN
London Luton
9 Jun - 12 Jun
£434pp
STN
London Stansted
Multiple airlines
   
2 STOPS
IAD
Washington, D.C. Dulles Intl
IAD
Washington, D.C. Dulles Intl
Multiple Airlines
   
2 STOPS
STN
London Stansted

London to Dulles Intl 2022 flight deals

Cheap flights to Dulles Intl from London found for this year
1 Oct - 15 Oct
£379pp
LGW
London Gatwick
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington, D.C. Dulles Intl
IAD
Washington, D.C. Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LGW
London Gatwick
23 Nov - 27 Nov
£380pp
LGW
London Gatwick
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington, D.C. Dulles Intl
IAD
Washington, D.C. Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LGW
London Gatwick
4 Nov - 11 Nov
£381pp
LGW
London Gatwick
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington, D.C. Dulles Intl
IAD
Washington, D.C. Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LGW
London Gatwick

Direct flights to Dulles Intl from London

Save time with London to Dulles Intl direct flight deals
1 Nov - 8 Nov
£540pp
LHR
London Heathrow
British Airways
Direct
IAD
Washington, D.C. Dulles Intl
IAD
Washington, D.C. Dulles Intl
British Airways
Direct
LHR
London Heathrow
9 Nov - 16 Nov
£547pp
LHR
London Heathrow
British Airways
Direct
IAD
Washington, D.C. Dulles Intl
IAD
Washington, D.C. Dulles Intl
British Airways
Direct
LHR
London Heathrow
1 Nov - 11 Nov
£555pp
LHR
London Heathrow
British Airways
Direct
IAD
Washington, D.C. Dulles Intl
IAD
Washington, D.C. Dulles Intl
British Airways
Direct
LHR
London Heathrow

Last-minute flights from London to Dulles Intl

Late deals on return flights to Dulles Intl from London, departing today and this week
23 May - 31 May
£481pp
LTN
London Luton
Multiple airlines
   
2 STOPS
IAD
Washington, D.C. Dulles Intl
IAD
Washington, D.C. Dulles Intl
Multiple Airlines
   
2 STOPS
LTN
London Luton
25 May - 20 Jun
£491pp
LHR
London Heathrow
Icelandair
 
1 STOP
IAD
Washington, D.C. Dulles Intl
IAD
Washington, D.C. Dulles Intl
Icelandair
 
1 STOP
LHR
London Heathrow
25 May - 7 Jun
£499pp
LGW
London Gatwick
Icelandair
 
1 STOP
IAD
Washington, D.C. Dulles Intl
IAD
Washington, D.C. Dulles Intl
Icelandair
 
1 STOP
LGW
London Gatwick

One-way flights to Dulles Intl from London

The cheapest one-way flights from London to Dulles Intl
13:30 - 10:45
Multiple Airlines
2 stops
26h 15m
LTN - IAD
Multiple Airlines
£278
Gotogate
16:35 - 15:30
Multiple Airlines
2 stops
51h 55m
STN - IAD
Multiple Airlines
£279
Kiwi.com
04:15 - 15:30
Multiple Airlines
2 stops
40h 15m
STN - IAD
Multiple Airlines
£280
Kiwi.com

Related info for your journey

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

Flight FAQs

From London to Dulles Intl

Which airlines flying from London to Washington, D.C. Dulles Intl have flexible cancellations due to COVID-19?

British Airways, Virgin Atlantic, and Lufthansa 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 London to Washington, D.C. Dulles Intl Airport for under £400 on Cheapflights?

Yes, there are multiple flights from London to Washington, D.C. Dulles Intl Airport for under £400. The cheapest flight booked recently is on Multiple Airlines for just £362, but on average you can expect to pay £390.

Are there nonstop flights from London to Washington, D.C. Dulles Intl Airport for under £600 on Cheapflights?

Cheapflights has at least 20 direct flights from London to Washington, D.C. Dulles Intl Airport under £600. A good price for a nonstop flight from London to Washington, D.C. Dulles Intl Airport is less than £588.

Are there last-minute flights available from London to Washington, D.C. Dulles Intl Airport for under £500?

There are currently 20+ open flights from London to Washington, D.C. Dulles Intl Airport within the next 7 days for less than £500.

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

Our cheapest airline available from London to Washington, D.C. Dulles Intl Airport is TAP AIR PORTUGAL. Our recent data shows that you can find tickets from as low as £379 on this airline. An additional option worth looking into is Icelandair, starting at £387. Users have found that TAP AIR PORTUGAL is 32% cheaper than the other options available to this destination.

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

The most popular flight routes from London to Washington, D.C. Dulles Intl Airport are London Heathrow - Washington, D.C. Dulles Intl, London Gatwick - Washington, D.C. Dulles Intl and London City - Washington, D.C. Dulles Intl.

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

On average you can expect to pay £2,156 for a flight from London to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is £501 while the most popular route, (London Heathrow - Washington, D.C. Dulles Intl) is currently priced at £391.

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

Before booking your flight to Washington, D.C. Dulles Intl Airport from London, check out the most reliable airlines to get you to your destination on time: Singapore Airlines (92%), KLM (92%), Delta( 92%).

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

The most popular airlines flying from London to Washington, D.C. Dulles Intl Airport are American Airlines, Air Canada and Air France. Something to consider prior to booking your flight.

Related searches

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COVID Restrictions

View COVID Travel Restrictions for Dulles Intl (IAD)

Do I need a COVID test to fly to Dulles Intl from London?

Information is based on travel restrictions from London to Washington, D.C. Dulles Intl

Most visitors from London need to provide a negative COVID-19 test result and/or quarantine to enter Washington, D.C. Dulles Intl.

COVID-19 testing requirements
Visitors from London must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Washington, D.C. Dulles Intl.

Quarantine requirements
Visitors from London are not required to quarantine after entering Washington, D.C. Dulles Intl.

Do I need a test to fly back to London from Dulles Intl?

Returning to London from Washington, D.C. Dulles Intl

COVID-19 testing requirements
Visitors from Washington, D.C. Dulles Intl are not required to present a negative COVID-19 PCR test or antigen result upon entering London.

Quarantine requirements
Visitors from Washington, D.C. Dulles Intl are not required to quarantine after entering London.

Hide COVID Travel Restrictions for Dulles Intl (IAD)

Alternative routes for London to Dulles Intl

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

Destination information for Dulles Intl

Things to know before you go - useful duration and weather info for your trip from London to Dulles Intl.
Today's exchange rate
£1 = $1.23
Average temperature for May in Dulles Intl
25.0 °C
Avg rainfall for May in Dulles Intl
111.0 mm

Airports servicing London

Gatwick (LGW)
Stansted (STN)
London City (LCY)
Luton (LTN)
Southend (SEN)

Airports servicing Washington, D.C.

Top 10 airlines flying from London to Washington, D.C. Dulles Intl

The chart below displays the airlines Cheapflights users travelling from London to 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
Air France
£304 £676 No cancel fee 77%
Search Air France flights
TAP AIR PORTUGAL
£312 £462 No cancel fee N/A
Search TAP AIR PORTUGAL flights
Icelandair
£379 £528 No cancel fee 76%
Search Icelandair flights
Aer Lingus
£419 £546 No cancel fee N/A
Search Aer Lingus flights
Scandinavian Airlines
£440 £532 No cancel fee 77%
Search Scandinavian Airlines flights
KLM
£472 £735 No cancel fee 75%
Search KLM flights
Iberia
£491 £679 No cancel fee 77%
Search Iberia flights
United Airlines
£493 £696 No cancel fee 69%
Search United Airlines flights
Virgin Atlantic
£493 £668 No cancel fee 72%
Search Virgin Atlantic flights
Air Canada
£499 £569 No cancel fee 67%
Search Air Canada flights

Hourly flight availability from London to Dulles Intl

See what time of day planes typically take off from London towards Dulles Intl.
Morning 6 AM to midday 85% of flight departures
Afternoon Midday to 6 PM 14% 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 London to Dulles Intl
See how many times per day planes take to the skies headed from London to Dulles Intl.
Sunday
22 daily flights
Monday
22 daily flights
Tuesday
27 daily flights
Wednesday
22 daily flights
Thursday
27 daily flights
Friday
22 daily flights
Saturday
27 daily flights
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