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Cheap flights from Washington, D.C. Dulles Intl Airport to London from £150

This is the cheapest one-way flight price, found on 6/12. Prices may vary by date and flight preferences.
IAD — LON
12 Dec — 19 Dec1
1 adult
Tue 12/12
Tue 19/12

Were you looking for Flights from London to Dulles Intl?

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

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 8 December 2023.

Popular in

June

Cheapest in

February

Average price

£631

Round-trip from

£59
High demand for flights, 22% potential price rise
Best time to find cheap flights, 13% potential price drop
Average for round-trip flights in December 2023
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?

To save on the cost of your flight from Washington, D.C. Dulles Intl Airport to London, book at least 60 days before your planned departure. Booking around this time can save you about 21% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £583 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £685.

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

February is one of the best times of the year to fly to London from Washington, D.C. Dulles Intl Airport. Prices for February average £549 per person but you can even find prices for as low as £294. The most expensive prices can be found in the month of June. Opting for a February flight can save you 32% on your journey compared to booking in June

When is the cheapest time to fly from Washington, D.C. Dulles Intl Airport to London (IAD - LON)?

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

Cheap United Airlines flights from Dulles Intl to London

Explore cheap flight options specifically provided by United Airlines for the route between Dulles Intl and London. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 800,620 searches. Data last updated 8 December 2023.
Take a look at some of the lowest-priced United Airlines flights heading from Washington, D.C. to London. Deals update often to give you more flight options matching your criteria
  • If you’re travelling from Washington, D.C. Dulles Intl Airport to London, one of the more common airlines travelling that route is United Airlines. Flights on this route from United Airlines typically cost £841.07 RT, a price that is 60% cheaper than the average Washington, D.C. Dulles Intl Airport to London flight. The cheapest flight found was £571 RT. When travelling from Washington, D.C. Dulles Intl Airport to London on United 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, United Airlines flights are 6% more popular than any other airline flying that same route.

Cheap Scandinavian Airlines flights from Dulles Intl to London

Explore cheap flight options specifically provided by Scandinavian Airlines for the route between Dulles Intl and London. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 800,620 searches. Data last updated 8 December 2023.
Some of the best deals we've found on Scandinavian Airlines flights travelling from Washington, D.C. to London. Check back soon if you're not seeing flights that suit your needs.
  • One of the most popular airlines travelling from Washington, D.C. Dulles Intl Airport to London is Scandinavian Airlines. Washington, D.C. Dulles Intl Airport to London flights are typically 46% more expensive than other airlines travelling the same route. Flights from Scandinavian Airlines typically cost £759.42 RT. The cheapest Scandinavian Airlines flight found for this route was £648. Washington, D.C. Dulles Intl Airport is the most common Washington, D.C. Dulles Intl Airport airport to take off from when flying to London. London Heathrow Airport is the most popular arrival airport in London. When flying from Washington, D.C. Dulles Intl Airport to London, Scandinavian Airlines flights are 6% more popular than any other airline flying that same route.

Cheap Dulles Intl to London flights in December & January 2023

Find cheap flight options from Dulles Intl to London specifically for the months of December and January 2023. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 800,620 searches. Prices were last updated on 8 December 2023.
Check out some of the best flight deals from Washington, D.C. to London in 2023. If these deals don't appeal to you, be sure to come back soon for more options.

Dulles Intl to London 2023 flight deals

Discover exclusive flight deals for travel between Dulles Intl and London in 2023. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 800,620 searches. Data last updated 8 December 2023.
Check out some of the best flight deals from Washington, D.C. to London in 2023. If these deals don't appeal to you, be sure to come back soon for more options.

Direct flights to London from Dulles Intl

Discover direct flight options from Dulles Intl to London. Find direct flights with no stopovers, providing a convenient travel experience. Explore direct flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 800,620 searches. Data last updated 8 December 2023.
For a quicker trip, book one of these direct flights from Washington, D.C. to London. Those looking to potentially save on 1 or 2-stop flights from Washington, D.C. to London should utilise the search form at the top of the page.

Dulles Intl to London flights leaving soon

Find last-minute flight options from Dulles Intl to London for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 800,620 searches. Data last updated 8 December 2023.
Book one of these great deals on flights from Washington, D.C. to London. To prevent any unwanted surprises, users should verify their flight info before booking.

One-way flights to London from Dulles Intl

Search for one-way flight options from Dulles Intl to London. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 800,620 searches. Data last updated 8 December 2023.
Take a look at some of the best available options we've come across on one-way flights from Washington, D.C. to London. Users needing a return flight from Washington, D.C. to London should utilize the search form above.

Find flights from Dulles Intl to London within your budget

Customise your flight search to find flights from Dulles Intl to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 800,620 searches. Data last updated 8 December 2023.

Fly from

Any airport

Fly to

Any airport

Budget

£264 - £507

Route

Depart

Return

Price

Washington, D.C. Dulles IntlLondon Luton

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Mon 4/3

1 stop14h 45m

London Luton

Wed 13/3

1 stop14h 10m

£264

Washington, D.C. Dulles IntlLondon Stansted

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 6/3

1 stop58h 50m

London Stansted

Wed 13/3

1 stop11h 00m

£267

Washington, D.C. Dulles IntlLondon Heathrow

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sat 23/12

1 stop21h 15m

London Heathrow

Tue 26/12

1 stop14h 05m

£350

Washington, D.C. Dulles IntlLondon City

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Thu 11/1

1 stop10h 20m

London City

Wed 24/1

1 stop13h 15m

£351

Washington, D.C. Dulles IntlLondon Heathrow

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 9/1

1 stop10h 10m

London Heathrow

Wed 31/1

1 stop11h 05m

£384

Washington, D.C. Dulles IntlLondon Heathrow

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Fri 26/1

1 stop10h 05m

London Heathrow

Tue 30/1

1 stop12h 40m

£411

Washington, D.C. Dulles IntlLondon Gatwick

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 29/1

1 stop15h 30m

London Gatwick

Mon 5/2

1 stop26h 05m

£444

Washington, D.C. Dulles IntlLondon Heathrow

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 27/2

Nonstop7h 10m

London Heathrow

Tue 12/3

1 stop14h 15m

£505

Washington, D.C. Dulles IntlLondon Heathrow

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 15/1

Nonstop7h 25m

London Heathrow

Wed 31/1

1 stop34h 45m

£507

Flights are sorted by cheapest first

Deals found on 7/12

Average price of flights to London by month

Plan your trip from Dulles Intl to London by taking into account the cheapest months to travel. The average price of a one-way flight from Dulles Intl to London is currently 166.70 GBP while a return flight costs 386.88 GBP. Price data was last updated on 3 December 2023.

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to London (average of £114). Flying from Washington, D.C. Dulles Intl Airport to London in July is currently the most expensive (average of £162). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

£96

February

£113

March

£95

April

£105

May

£105

June

£125

July

£129

August

£102

September

£109

October

£128

November

£91

December

£99

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 8 December 2023.
Peruse reviews from past customers who have flown with United Airlines, Scandinavian Airlines and Delta from Washington, D.C. to London to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
7.9
Good
3,035 reviews

Boarding

8.0

Crew

8.5

Comfort

7.9

Food

7.2

Entertainment

7.8

Overall

7.9

Reviews

1 / 10

We got returned to the gate because of a disruptive passenger and didn’t take off until 45 minutes later than scheduled but landed only 15 minutes late. All handled well.

7.9
Good
3,035 reviews
7.9
Good
3,035 reviews

Boarding

8.0

Crew

8.5

Comfort

7.9

Food

7.2

Entertainment

7.8

Overall

7.9

Reviews

1 / 10

We got returned to the gate because of a disruptive passenger and didn’t take off until 45 minutes later than scheduled but landed only 15 minutes late. All handled well.

7.4
Good
198 reviews
7.9
Good
3,035 reviews

Boarding

8.0

Crew

8.5

Comfort

7.9

Food

7.2

Entertainment

7.8

Overall

7.9

Reviews

1 / 10

We got returned to the gate because of a disruptive passenger and didn’t take off until 45 minutes later than scheduled but landed only 15 minutes late. All handled well.

7.4
Good
1,902 reviews
7.9
Good
3,035 reviews

Boarding

8.0

Crew

8.5

Comfort

7.9

Food

7.2

Entertainment

7.8

Overall

7.9

Reviews

1 / 10

We got returned to the gate because of a disruptive passenger and didn’t take off until 45 minutes later than scheduled but landed only 15 minutes late. All handled well.

7.4
Good
457 reviews
7.9
Good
3,035 reviews

Boarding

8.0

Crew

8.5

Comfort

7.9

Food

7.2

Entertainment

7.8

Overall

7.9

Reviews

1 / 10

We got returned to the gate because of a disruptive passenger and didn’t take off until 45 minutes later than scheduled but landed only 15 minutes late. All handled well.

7.3
Good
1,849 reviews
7.9
Good
3,035 reviews

Boarding

8.0

Crew

8.5

Comfort

7.9

Food

7.2

Entertainment

7.8

Overall

7.9

Reviews

1 / 10

We got returned to the gate because of a disruptive passenger and didn’t take off until 45 minutes later than scheduled but landed only 15 minutes late. All handled well.

Average temperature in London by month

Plan your trip to London by selecting the month that matches your preferred temperature. July sees the highest average temperature while January sees the lowest average temperature. Temperature data was last updated on 3 December 2023.

LON

Temperature

4 - 17 °C

Average rainfall in London by month

Keep in mind the precipitation totals in London by selecting the month that matches your preferred temperature. London sees an average of 57.50 precipitation per year with the most occurring in January. Precipitation data was last updated on 3 December 2023.

LON

Rainfall

40 - 70 mm

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find flights from Washington, D.C. Dulles Intl Airport to London for under £300 on Cheapflights?

Yes, there are multiple flights from Washington, D.C. Dulles Intl Airport to London for under £300. The cheapest flight booked recently is on Multiple Airlines for just £264, but on average you can expect to pay £277.

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 £522.

Are there last-minute flights available from Washington, D.C. Dulles Intl Airport to London for under £300?

There are currently 20+ open flights from Washington, D.C. Dulles Intl Airport to London within the next 7 days for less than £300.

What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to London round-trip?

Flying on PLAY is currently your cheapest option to London, with prices starting at £267. PLAY is 51% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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 (89%), Air France (88%), Delta (88%).

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

Looking at all options, your cheapest flight can be booked for £446. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for £350 on average our data indicates £531 when flying from Washington, D.C. Dulles Intl Airport to London.

What does IAD to LHR mean?

Washington, D.C. Dulles Intl Airport is IAD and London Heathrow Airport is LHR. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. London Gatwick Airport (LGW), London City Airport (LCY), London Stansted Airport (STN), London Luton Airport (LTN), London Southend Airport (SEN) are some additional IATA codes for airports related to your trip.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 10 airlines flying from Dulles Intl to London

Discover the top 10 airlines that operate flights from Dulles Intl to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 800,620 searches. Data last updated 8 December 2023.
AirlineCheapestAverageFlexibilityOn-time
Norse Atlantic UKCheapest£257Average£553FlexibilityNo cancel feeOn-timeN/A