Cheap flights from Dulles Intl (IAD) to London (LON)

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How to find the cheapest flight from
Dulles Intl (IAD) to London (LON)

All the information you need to plan the best IAD to LON flight in 2021: compare Dulles Intl to London flight prices with the expected peak season, weather and rainfall in London.
IAD - LON
Price
$634 - $863
LON
Temperature
39.2 - 62.6 °F
LON
Precipitation
1.6 - 2.8 inches

Popular in

June

High demand for flights, 18% potential price rise

Cheapest in

October

Best time to find cheap flights, 10% potential price drop

Round-trip from

$634

From Washington Dulles Intl to London (LON)

One-way from

$222

One-way flight from Washington Dulles Intl to London (LON)

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 Washington Dulles Intl Airport to London (IAD - LON)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington Dulles Intl Airport to London as you normally would.

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

Travelers have found it’s best to book a flight 48 days in advance to save up to 49% 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 48 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 Washington Dulles Intl Airport to London 1-2 weeks in advance for as low as $825, or $1,055 for flights within the next 24 hours.

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

The best pricing can be found in the month of October. Prices to London from Washington Dulles Intl Airport average $708. You can even find prices in October for less than $708, as users have found deals to London from as low as $565. The month of June appears to be one of the more expensive times to travel to London from Washington Dulles Intl Airport. Flying in the targeted month can save you up to 25%.

Cheap flights from Dulles Intl to London in October, November 2021

The best prices found for IAD to LON flights for October, November
25 Nov - 2 Dec
$413pp
IAD
Washington Dulles Intl
SAS
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
SAS
 
1 STOP
IAD
Washington Dulles Intl
14 Nov - 9 Dec
$418pp
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LGW
London Gatwick
LGW
London Gatwick
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl
15 Nov - 8 Dec
$431pp
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LGW
London Gatwick
LGW
London Gatwick
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl

Washington Dulles Intl to London 2021 flight deals

Cheap flights to London from Dulles Intl found for this year
6 Dec - 11 Dec
$413pp
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LGW
London Gatwick
LGW
London Gatwick
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl
25 Nov - 2 Dec
$413pp
IAD
Washington Dulles Intl
SAS
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
SAS
 
1 STOP
IAD
Washington Dulles Intl
14 Nov - 9 Dec
$418pp
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LGW
London Gatwick
LGW
London Gatwick
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl

Non-stop flights to London from Dulles Intl

Save time with Dulles Intl to London direct flight deals
11 Jan - 18 Jan
$564pp
IAD
Washington Dulles Intl
British Airways
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
British Airways
Non-Stop
IAD
Washington Dulles Intl
11 Jan - 31 Jan
$565pp
IAD
Washington Dulles Intl
British Airways
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
British Airways
Non-Stop
IAD
Washington Dulles Intl
6 Dec - 9 Mar
$570pp
IAD
Washington Dulles Intl
British Airways
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
British Airways
Non-Stop
IAD
Washington Dulles Intl

Last minute flights from Dulles Intl to London

Late deals on round-trip flights to London from Dulles Intl, departing today and this week
6 Nov - 4 Dec
$486pp
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl
6 Nov - 12 Nov
$513pp
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LGW
London Gatwick
LGW
London Gatwick
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl
6 Nov - 12 Nov
$543pp
IAD
Washington Dulles Intl
TAP AIR PORTUGAL
 
1 STOP
LGW
London Gatwick
LGW
London Gatwick
TAP AIR PORTUGAL
 
1 STOP
IAD
Washington Dulles Intl

One-way flights to London from Washington Dulles Intl

The cheapest one-way flights from Dulles Intl to London
5:20 pm - 4:35 pm
TAP AIR PORTUGAL
1 Stop
18h 15m
IAD - LHR
TAP AIR PORTUGAL
$222
Gotogate
5:20 pm - 4:35 pm
TAP AIR PORTUGAL
1 Stop
18h 15m
IAD - LHR
TAP AIR PORTUGAL
$224
mytrip.com
5:20 pm - 5:40 pm
TAP AIR PORTUGAL
1 Stop
19h 20m
IAD - LHR
TAP AIR PORTUGAL
$225
Gotogate

Related info for your journey

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

Flight FAQs

From Dulles Intl to London

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

Due to the rapidly changing circumstances due to COVID-19, airlines like United Airlines, British Airways, and Lufthansa flying from Washington Dulles Intl to London have implemented new flexible cancellation policies.

Can I find flights from Washington Dulles Intl Airport to London for under $400 on Cheapflights?

Yes, there are multiple flights from Washington Dulles Intl Airport to London for under $400. The cheapest flight booked recently is on TAP AIR PORTUGAL for just $385, but on average you can expect to pay $402.

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

Cheapflights has at least 20 direct flights from Washington Dulles Intl Airport to London under $600. A good price for a nonstop flight from Washington Dulles Intl Airport to London is less than $584.

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

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

What days are nonstop flights available from Washington Dulles Intl Airport to London?

Nonstop flights are available for this route on the following days: Friday.

How many flights depart from Washington Dulles Intl Airport to London on average per day?

On average 5 flights depart from Washington Dulles Intl Airport to London per day.
Evening (6pm - Midnight) - 100% of flight departures

How long is the flight from Washington Dulles Intl Airport to London?

TAP AIR PORTUGAL, SAS, and Virgin Atlantic can get you from Washington Dulles Intl Airport to London in just under 12h 25m. Your travel time can differ by up to 8h 50m. The distance between Washington Dulles Intl Airport and London is about 3687 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

TAP AIR PORTUGAL, at $385, was found to be the cheapest airline from Washington Dulles Intl Airport to London.Alternate airlines to your destination round-trip include SAS and Virgin Atlantic. TAP AIR PORTUGAL is priced at 45% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest flights from Washington Dulles Intl Airport to London?

While on average a flight from Washington Dulles Intl Airport to London is generally $1,892, our data shows the cheapest flight currently is $237. When looking at the most popular route, (Washington Dulles Intl - London Heathrow), you can expect to pay $404 for that flight.

What are the most reliable airlines from Washington Dulles Intl Airport to London?

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 Dulles Intl Airport to London on time: American Airlines (68%), Aer Lingus (68%), Finnair (68%).

What are the most popular routes from Washington Dulles Intl Airport to London?

When deciding which route to take from Washington Dulles Intl Airport to London consider Washington Dulles Intl - London Heathrow, Washington Dulles Intl - London Gatwick or Washington Dulles Intl - London City as they are the most popular.

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

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

COVID Restrictions

View COVID Travel Restrictions for London, England

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

Information is based on travel restrictions from Washington Dulles Intl to London

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

COVID-19 testing requirements
Visitors from Washington Dulles Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to London.

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

Documents
Mandatory passenger locator form - Submit the form any time in the 48 hours before arriving in the UK. Show the form when checking in your plane, train or ferry to the UK.

Managed quarantine package for Scotland - All travelers arriving directly to Scotland are required to book their Managed Quarantine Package prior to travel.

COVID-19 testing package - All travelers must book and pay for a COVID-19 Testing Package prior to travel to England and Scotland.


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

Returning to Washington Dulles Intl from London

COVID-19 testing requirements
Visitors from London must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Washington Dulles Intl.

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

Hide COVID Travel Restrictions for London, England

Alternative routes for Dulles Intl to London

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

Destination information for London

Things to know before you go - useful duration and weather info for your trip from Dulles Intl to London.
Today's exchange rate
$1 = £0.73
Average temperature for October in London
60.8 °F
Avg rainfall for October in London
2.8 ″

Airports servicing Washington

Airports servicing London

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

Top 10 airlines flying from Washington Dulles Intl to London

The chart below displays the airlines Cheapflights users traveling from Dulles Intl to London 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
SAS
$355 $652 No cancel fee 77%
Icelandair
$392 $693 No cancel fee 76%
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.

Delta
$415 $780 No cancel fee N/A
Air Canada
$471 $1,556 No cancel fee 67%
SWISS
$473 $615 No cancel fee 79%
Lufthansa
$473 $717 No cancel fee 76%
United Airlines
$480 $796 No cancel fee 69%
KLM
$481 $632 No cancel fee 75%
Air France
$492 $705 No cancel fee 77%

Hourly flight availability from Dulles Intl to London

See what time of day planes typically take off from Dulles Intl towards London.
Afternoon Noon to 6 PM 50% of IAD to LON departures
Evening 6 PM to midnight 50% of IAD to LON departures
Early morning Midnight to 6 AM 0% of IAD to LON departures
Morning 6 AM to noon 0% of IAD to LON departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Dulles Intl to London
See how many times per day planes take to the skies headed from Dulles Intl to London.
Sunday
4 daily flights
Monday
22 daily flights
Tuesday
22 daily flights
Wednesday
22 daily flights
Thursday
22 daily flights
Friday
22 daily flights
Saturday
4 daily flights
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