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

IAD — LON
Jan 31 — Feb 71

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 2023: compare Dulles Intl to London flight prices with the expected peak season, weather and rainfall in London.

IAD - LON

Price

$646 - $906

LON

Temperature

39.2 - 62.6 °F

LON

Rainfall

1.6 - 2.8 inches

Popular inJulyHigh demand for flights, 18% potential price rise
Cheapest inFebruaryBest time to find cheap flights, 13% potential price drop
Round-trip from$646From Washington, D.C. Dulles Intl to London (LON)
One-way from$211One-way flight from Washington, D.C. Dulles Intl to London (LON)

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

Travelers have found it’s best to book a flight 61 days in advance to save up to 24% 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 61 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, D.C. Dulles Intl Airport to London 1-2 weeks in advance for as low as $852, or $965 for flights within the next 24 hours.

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

The best pricing can be found in the month of March. Prices to London from Washington, D.C. Dulles Intl Airport average $728. You can even find prices in March for less than $728, as users have found deals to London from as low as $501. The month of July appears to be one of the more expensive times to travel to London from Washington, D.C. Dulles Intl Airport. Flying in the targeted month can save you up to 23%.

When is the cheapest time to fly from Washington, D.C. 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, D.C. Dulles Intl Airport to London as you normally would.

Cheap flights from Dulles Intl to London in January, February 2023

The best prices found for IAD to LON flights for January, February
Feb 13 - Mar 6
IAD

Washington, D.C. Dulles Intl

LHR

London Heathrow

1 stop

18h 00m
LHR

London Heathrow

IAD

Washington, D.C. Dulles Intl

1 stop

24h 55m
$383

TAP AIR PORTUGAL

Pick Dates

Deal found 1/25

Jan 26 - Jan 30
IAD

Washington, D.C. Dulles Intl

LHR

London Heathrow

1 stop

23h 25m
LHR

London Heathrow

IAD

Washington, D.C. Dulles Intl

1 stop

13h 50m
$420

Scandinavian Airlines

Pick Dates

Deal found 1/24

Feb 27 - Mar 8
IAD

Washington, D.C. Dulles Intl

LGW

London Gatwick

1 stop

12h 10m
LGW

London Gatwick

IAD

Washington, D.C. Dulles Intl

1 stop

15h 25m
$444

TAP AIR PORTUGAL

Pick Dates

Deal found 1/25

Dulles Intl to London 2023 flight deals

Cheap flights to London from Dulles Intl found for this year
May 2 - May 4
IAD

Washington, D.C. Dulles Intl

LTN

London Luton

1 stop

13h 15m
LTN

London Luton

IAD

Washington, D.C. Dulles Intl

1 stop

16h 30m
$364

Multiple Airlines

Pick Dates

Deal found 1/25

May 2 - May 4
IAD

Washington, D.C. Dulles Intl

LTN

London Luton

1 stop

13h 15m
LTN

London Luton

IAD

Washington, D.C. Dulles Intl

1 stop

16h 30m
$366

Multiple Airlines

Pick Dates

Deal found 1/25

Feb 13 - Mar 6
IAD

Washington, D.C. Dulles Intl

LHR

London Heathrow

1 stop

18h 00m
LHR

London Heathrow

IAD

Washington, D.C. Dulles Intl

1 stop

24h 55m
$383

TAP AIR PORTUGAL

Pick Dates

Deal found 1/25

Cheap Virgin Atlantic flights from Dulles Intl to London

Feb 22 - Feb 27
IAD

Washington, D.C. Dulles Intl

LHR

London Heathrow

1 stop

9h 25m
LHR

London Heathrow

IAD

Washington, D.C. Dulles Intl

Nonstop

8h 20m
$458

Virgin Atlantic

Pick Dates

Deal found 1/25

Feb 22 - Feb 27
IAD

Washington, D.C. Dulles Intl

LHR

London Heathrow

Nonstop

6h 55m
LHR

London Heathrow

IAD

Washington, D.C. Dulles Intl

Nonstop

8h 20m
$461

Virgin Atlantic

Pick Dates

Deal found 1/25

Mar 13 - Mar 27
IAD

Washington, D.C. Dulles Intl

LHR

London Heathrow

1 stop

9h 20m
LHR

London Heathrow

IAD

Washington, D.C. Dulles Intl

Nonstop

8h 25m
$462

Virgin Atlantic

Pick Dates

Deal found 1/25

  • If you’re traveling from Washington, D.C. Dulles Intl Airport to London, one of the more common airlines traveling that route is Virgin Atlantic. Flights from Virgin Atlantic traveling this route typically cost $706.60 RT. This price is typically 65% more expensive than other airlines that offer Washington, D.C. Dulles Intl Airport to London flights. When booking this route, the cheapest RT price found was $600. The most popular departure airport in Washington, D.C. Dulles Intl Airport when flying to London is Washington, D.C. Dulles Intl Airport. The most popular airport to fly into when visiting London is London Heathrow Airport. When flying from Washington, D.C. Dulles Intl Airport to London, Virgin Atlantic flights are 8% more popular than any other airline flying that same route.

Cheap Scandinavian Airlines flights from Dulles Intl to London

Jan 31 - Feb 4
IAD

Washington, D.C. Dulles Intl

LHR

London Heathrow

1 stop

23h 25m
LHR

London Heathrow

IAD

Washington, D.C. Dulles Intl

1 stop

13h 50m
$420

Scandinavian Airlines

Pick Dates

Deal found 1/25

Apr 29 - May 6
IAD

Washington, D.C. Dulles Intl

LHR

London Heathrow

1 stop

23h 25m
LHR

London Heathrow

IAD

Washington, D.C. Dulles Intl

1 stop

13h 15m
$424

Scandinavian Airlines

Pick Dates

Deal found 1/25

Feb 25 - Feb 27
IAD

Washington, D.C. Dulles Intl

LHR

London Heathrow

2 stops

16h 20m
LHR

London Heathrow

IAD

Washington, D.C. Dulles Intl

1 stop

13h 50m
$477

Scandinavian Airlines

Pick Dates

Deal found 1/25

  • If you’re traveling from Washington, D.C. Dulles Intl Airport to London, one of the more common airlines traveling that route is Scandinavian Airlines. Flights from Scandinavian Airlines traveling this route typically cost $813.97 RT. This price is typically 52% more expensive than other airlines that offer Washington, D.C. Dulles Intl Airport to London flights. When booking this route, the cheapest RT price found was $518. When traveling from Washington, D.C. Dulles Intl Airport to London on Scandinavian Airlines, the most popular airport to depart from is Washington, D.C. Dulles Intl Airport and the most popular airport to arrive at is London Heathrow Airport. When flying from Washington, D.C. Dulles Intl Airport to London, Scandinavian Airlines flights are 7% more popular than any other airline flying that same route.

Non-stop flights to London from Dulles Intl

Save time with Dulles Intl to London direct flight deals
Feb 22 - Feb 27
IAD

Washington, D.C. Dulles Intl

LHR

London Heathrow

Nonstop

6h 55m
LHR

London Heathrow

IAD

Washington, D.C. Dulles Intl

Nonstop

8h 20m
$461

Virgin Atlantic

Pick Dates

Deal found 1/25

Mar 13 - Mar 27
IAD

Washington, D.C. Dulles Intl

LHR

London Heathrow

Nonstop

6h 55m
LHR

London Heathrow

IAD

Washington, D.C. Dulles Intl

Nonstop

8h 25m
$466

Virgin Atlantic

Pick Dates

Deal found 1/25

Mar 20 - Mar 27
IAD

Washington, D.C. Dulles Intl

LHR

London Heathrow

Nonstop

6h 55m
LHR

London Heathrow

IAD

Washington, D.C. Dulles Intl

Nonstop

8h 25m
$467

Virgin Atlantic

Pick Dates

Deal found 1/25

Last minute flights from Dulles Intl to London

Late deals on return flights to London from Dulles Intl, departing today and this week
Jan 31 - Feb 4
IAD

Washington, D.C. Dulles Intl

LHR

London Heathrow

1 stop

23h 25m
LHR

London Heathrow

IAD

Washington, D.C. Dulles Intl

1 stop

13h 50m
$420

Scandinavian Airlines

Pick Dates

Deal found 1/25

Feb 1 - Feb 8
IAD

Washington, D.C. Dulles Intl

STN

London Stansted

2 stops

17h 50m
STN

London Stansted

IAD

Washington, D.C. Dulles Intl

2 stops

20h 50m
$495

Multiple Airlines

Pick Dates

Deal found 1/25

Jan 31 - Feb 13
IAD

Washington, D.C. Dulles Intl

STN

London Stansted

2 stops

23h 35m
STN

London Stansted

IAD

Washington, D.C. Dulles Intl

2 stops

19h 25m
$499

Multiple Airlines

Pick Dates

Deal found 1/25

One-way flights to London from Dulles Intl

The cheapest one-way flights from Dulles Intl to London
Mar 20
IAD

Washington, D.C. Dulles Intl

LHR

London Heathrow

1 stop

18h 00m
$165

TAP AIR PORTUGAL

Pick Dates

Deal found 1/25

Mar 13
IAD

Washington, D.C. Dulles Intl

LGW

London Gatwick

1 stop

12h 10m
$181

TAP AIR PORTUGAL

Pick Dates

Deal found 1/24

Mar 19
IAD

Washington, D.C. Dulles Intl

LHR

London Heathrow

1 stop

13h 55m
$181

TAP AIR PORTUGAL

Pick Dates

Deal found 1/25

Reviews of Airlines Servicing London

Delta
7.9
Good
1,998 reviews

Entertainment

7.8

Food

7.2

Boarding

8.0

Comfort

7.9

Crew

8.5

Overall

7.9

Reviews

1 / 10

McNamara Terminal for departures is absolutely amazing. The bathrooms are all clean and very modern. We were walking to our gate and there was somebody playing on a grand piano while people were sitting in their chairs waiting for the flights are OK. Multiple restaurants of good quality to dying or drink before your flight. The flight attendants were very polite and nice.

Delta
7.9
Good
1,998 reviews
Delta
7.9
Good
1,998 reviews

Entertainment

7.8

Food

7.2

Boarding

8.0

Comfort

7.9

Crew

8.5

Overall

7.9

Reviews

1 / 10

McNamara Terminal for departures is absolutely amazing. The bathrooms are all clean and very modern. We were walking to our gate and there was somebody playing on a grand piano while people were sitting in their chairs waiting for the flights are OK. Multiple restaurants of good quality to dying or drink before your flight. The flight attendants were very polite and nice.

SWISS
7.7
Good
316 reviews
Delta
7.9
Good
1,998 reviews

Entertainment

7.8

Food

7.2

Boarding

8.0

Comfort

7.9

Crew

8.5

Overall

7.9

Reviews

1 / 10

McNamara Terminal for departures is absolutely amazing. The bathrooms are all clean and very modern. We were walking to our gate and there was somebody playing on a grand piano while people were sitting in their chairs waiting for the flights are OK. Multiple restaurants of good quality to dying or drink before your flight. The flight attendants were very polite and nice.

KLM
7.5
Good
114 reviews
Delta
7.9
Good
1,998 reviews

Entertainment

7.8

Food

7.2

Boarding

8.0

Comfort

7.9

Crew

8.5

Overall

7.9

Reviews

1 / 10

McNamara Terminal for departures is absolutely amazing. The bathrooms are all clean and very modern. We were walking to our gate and there was somebody playing on a grand piano while people were sitting in their chairs waiting for the flights are OK. Multiple restaurants of good quality to dying or drink before your flight. The flight attendants were very polite and nice.

Scandinavian Airlines
6.9
Okay
103 reviews
Delta
7.9
Good
1,998 reviews

Entertainment

7.8

Food

7.2

Boarding

8.0

Comfort

7.9

Crew

8.5

Overall

7.9

Reviews

1 / 10

McNamara Terminal for departures is absolutely amazing. The bathrooms are all clean and very modern. We were walking to our gate and there was somebody playing on a grand piano while people were sitting in their chairs waiting for the flights are OK. Multiple restaurants of good quality to dying or drink before your flight. The flight attendants were very polite and nice.

Virgin Atlantic
6.8
Okay
120 reviews
Delta
7.9
Good
1,998 reviews

Entertainment

7.8

Food

7.2

Boarding

8.0

Comfort

7.9

Crew

8.5

Overall

7.9

Reviews

1 / 10

McNamara Terminal for departures is absolutely amazing. The bathrooms are all clean and very modern. We were walking to our gate and there was somebody playing on a grand piano while people were sitting in their chairs waiting for the flights are OK. Multiple restaurants of good quality to dying or drink before your flight. The flight attendants were very polite and nice.

Related info for your journey

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

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

Some of the carriers operating flights from Washington, D.C. Dulles Intl to London that may be offering flexible cancellation policies are United Airlines, British Airways, and Virgin Atlantic. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

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

Yes, there are multiple flights from Washington, D.C. Dulles Intl Airport to London for under $400. The cheapest flight booked recently is on Multiple Airlines for just $364, but on average you can expect to pay $407.

Are there nonstop flights from Washington, D.C. Dulles Intl Airport to London for under $500 on Cheapflights?

Cheapflights has at least 20 direct flights from Washington, D.C. Dulles Intl Airport to London under $500. A good price for a nonstop flight from Washington, D.C. Dulles Intl Airport to London is less than $537.

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

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

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

According to our current data, TAP AIR PORTUGAL ($383), PLAY ($409), and Scandinavian Airlines ($420) offers the cheapest pricing from Washington, D.C. Dulles Intl Airport to London. TAP AIR PORTUGAL is priced at 48% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

What are the most reliable airlines from Washington, D.C. 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, D.C. Dulles Intl Airport to London on time: KLM (75%), Delta (75%), Virgin Atlantic (75%).

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

While on average a flight from Washington, D.C. Dulles Intl Airport to London is generally $2,523, our data shows the cheapest flight currently is $367. When looking at the most popular route, (Washington, D.C. Dulles Intl - London Heathrow), you can expect to pay $420 for that flight.

Alternative routes for Dulles Intl to London

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

Top 10 airlines flying from 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.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$15Average$21FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
PLAYCheapest$317Average$429FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search PLAY flights
KLMCheapest$327Average$665FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search KLM flights
TAP AIR PORTUGALCheapest$336Average$514FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search TAP AIR PORTUGAL flights
IcelandairCheapest$369Average$657FlexibilityNo cancel feeOn-time76%COVID-19 safety
Search Icelandair flights
WOW airCheapest$410Average$625FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search WOW air flights
Scandinavian AirlinesCheapest$434Average$698FlexibilityNo cancel feeOn-time77%COVID-19 safety
Search Scandinavian Airlines flights
Aer LingusCheapest$498Average$732FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Aer Lingus flights
DeltaCheapest$518Average$814FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
IberiaCheapest$538Average$751FlexibilityNo cancel feeOn-time77%COVID-19 safety
Search Iberia flights

Hourly flight availability from Dulles Intl to London

See what time of day planes typically take off from Dulles Intl to London
1%of flight departuresEarly morningMidnight to 6 am
0%of flight departuresMorning6 am to noon
41%of flight departuresAfternoonNoon to 6 pm
58%of flight departuresEvening6 pm to midnight
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
Sunday22daily flights
Monday22daily flights
Tuesday22daily flights
Wednesday22daily flights
Thursday22daily flights
Friday22daily flights
Saturday16daily flights
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