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Cheap flights from Washington, D.C. Dulles Intl Airport to London from £155

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/1. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LON
4 Kas — 11 Kas1
1 adult

The best prices from Washington, D.C. Dulles Intl to London are usually found in January or October, booked 21 days in advance, depart on a Saturday or Thursday and return on a Tuesday

Cheap flight deals from Dulles Intl to London

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 30 Ekim 2024.

Round-trip from

£254

One-way from

£155

Popular in

June

Cheapest in

January
3/3-13/3
  • 3/3-13/3
  • 2 total stops
  • 30h 15m total
  • Washington, D.C. to London
Icelandair
  • Icelandair
  • 13/1
  • 1 total stop
  • 10h 15m total
  • Washington, D.C. to London
High demand for flights, 30% potential price rise
Best time to find cheap flights, 15% potential price drop

Find flight deals from Dulles Intl to London

Cheapest flights from Dulles Intl to London
Explore the most affordable flight options available from Dulles Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 Ekim 2024.

Paz 10/1118:10IAD - LGW
1 stop16h 00mMultiple Airlines
Paz 17/1107:00LGW - IAD
1 stop15h 00mMultiple Airlines
Deal found 29/10£435
Paz 10/1117:10IAD - LHR
2 stops14h 45mScandinavian Airlines
Per 21/1106:40LHR - IAD
1 stop14h 00mScandinavian Airlines
Deal found 28/10£435
Cmt 7/1217:30IAD - LGW
1 stop11h 20mTAP AIR PORTUGAL
Cum 13/1210:45LGW - IAD
2 stops15h 15mTAP AIR PORTUGAL
Deal found 29/10£436
Per 5/1219:40IAD - LGW
1 stop10h 15mIcelandair
Cum 13/1211:55LGW - IAD
1 stop11h 30mIcelandair
Deal found 29/10£437
Pzt 16/1219:40IAD - LHR
1 stop10h 10mIcelandair
Cmt 18/112:15LHR - IAD
1 stop11h 10mIcelandair
Deal found 29/10£437
Per 7/1118:10IAD - STN
1 stop10h 50mPLAY
Paz 17/1111:00STN - IAD
1 stop11h 00mPLAY
Deal found 28/10£443
Paz 8/1222:30IAD - LHR
1 stop18h 05mTAP AIR PORTUGAL
Çar 11/1208:15LHR - IAD
1 stop17h 45mTAP AIR PORTUGAL
Deal found 28/10£443
Sal 12/1119:40IAD - LHR
1 stop10h 10mMultiple Airlines
Per 13/307:25LHR - IAD
1 stop14h 35mMultiple Airlines
Deal found 28/10£444
Per 28/1117:30IAD - LTN
2 stops23h 50mMultiple Airlines
Çar 4/1218:00LTN - IAD
2 stops26h 00mMultiple Airlines
Deal found 28/10£446
Pzt 11/1118:45IAD - LHR
Nonstop7h 30mVirgin Atlantic
Sal 19/1108:40LHR - IAD
1 stop12h 05mVirgin Atlantic
Deal found 28/10£462
Çar 4/1218:00IAD - LHR
Nonstop7h 15mBritish Airways
Cum 13/1216:30LHR - IAD
Nonstop8h 15mBritish Airways
Deal found 29/10£471
Pzt 2/1217:10IAD - STN
1 stop9h 40mMultiple Airlines
Çar 11/1206:30STN - IAD
1 stop14h 10mMultiple Airlines
Deal found 28/10£473

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 1,015,184 searches. Data last updated 30 Ekim 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£254 - £480

Route

Depart

Return

Price

Washington, D.C. Dulles IntlLondon Luton

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Pzt 3/3

1 stop14h 45m

London Luton

Per 13/3

1 stop15h 30m

£254

Washington, D.C. Dulles IntlLondon Stansted

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Cmt 8/3

1 stop10h 50m

London Stansted

Sal 11/3

1 stop11h 00m

£264

Washington, D.C. Dulles IntlLondon Heathrow

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Pzt 2/12

1 stop17h 15m

London Heathrow

Paz 8/12

1 stop23h 30m

£360

Washington, D.C. Dulles IntlLondon Heathrow

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sal 21/1

1 stop10h 10m

London Heathrow

Paz 26/1

1 stop11h 10m

£377

Washington, D.C. Dulles IntlLondon Heathrow

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Cmt 25/1

2 stops18h 15m

London Heathrow

Pzt 27/1

1 stop14h 00m

£385

Washington, D.C. Dulles IntlLondon Heathrow

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sal 18/3

Nonstop7h 15m

London Heathrow

Çar 26/3

1 stop14h 00m

£460

Washington, D.C. Dulles IntlLondon Heathrow

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Pzt 11/11

Nonstop7h 30m

London Heathrow

Sal 19/11

1 stop12h 05m

£462

Washington, D.C. Dulles IntlLondon City

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Per 20/3

1 stop13h 15m

London City

Çar 26/3

1 stop27h 00m

£469

Washington, D.C. Dulles IntlLondon Heathrow

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Çar 4/12

Nonstop7h 10m

London Heathrow

Sal 10/12

Nonstop8h 15m

£471

Washington, D.C. Dulles IntlLondon Heathrow

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sal 12/11

Nonstop7h 10m

London Heathrow

Pzt 10/2

1 stop35h 35m

£474

Washington, D.C. Dulles IntlLondon Heathrow

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Çar 13/11

Nonstop7h 30m

London Heathrow

Cum 29/11

1 stop12h 05m

£477

Washington, D.C. Dulles IntlLondon Heathrow

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Çar 13/11

1 stop9h 51m

London Heathrow

Per 5/12

1 stop12h 05m

£480

Flights are sorted by cheapest first

Deals found on 28/10

Best time to book a flight from Dulles Intl to London

Have a flexible travel schedule? Discover the best time to fly to London from Dulles Intl with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Dulles Intl to London

Get recent, data-driven insights about flights from Dulles Intl to London including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a return flight from Dulles Intl to London. Price data was last updated on 25 October 2024.

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to London, you should look to book at least 21 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to London (average of £112). Flying from Washington, D.C. Dulles Intl Airport to London in July is currently the most expensive (average of £159). 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.

What is the cheapest time of day to fly from IAD to LON?

Find hourly flight availability from Dulles Intl to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 Ekim 2024.

It’s optimal to fly from Washington, D.C. Dulles Intl Airport to London at midday. By choosing this option you can save up to 2% on the cost of your flight, compared to a flight in the afternoon.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 30 Ekim 2024.
Peruse reviews from past customers who have flown with Icelandair, Scandinavian Airlines and Iberia 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.
8.0
Very Good
8,845 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

8.0
Very Good
8,845 reviews
8.0
Very Good
8,845 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

7.8
Good
1,352 reviews
8.0
Very Good
8,845 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

7.7
Good
1,318 reviews
8.0
Very Good
8,845 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

7.7
Good
833 reviews
8.0
Very Good
8,845 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

7.6
Good
1,641 reviews
8.0
Very Good
8,845 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

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.
  • What are the cheapest airlines flying 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 £264. Additional return tickets that might be worth considering are offered by TAP AIR PORTUGAL and Icelandair, with the lowest prices starting at £360 and £377, respectively. PLAY is 53% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to London one-way?

    The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as £155. However, be on the lookout for offers from PLAY and SWISS, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to London for a low price.

  • What are the most popular routes 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: SWISS (53%), Air Canada (53%), Austrian Airlines (53%).

  • 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 £277. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for £365 on average our data indicates £713 when flying from Washington, D.C. Dulles Intl Airport to London.

  • Can I find deals for flights from Dulles Intl to London that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to London.

  • Can I find deals for business class flights from Dulles Intl to London?

    Yes. Cheapflights offers flight deals from Dulles Intl to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to London?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to London (average of £112). Flying from Washington, D.C. Dulles Intl Airport to London in July is currently the most expensive (average of £159). 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.

See more FAQs

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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 1,015,184 searches. Data last updated 30 Ekim 2024.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£320Average£510FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
IcelandairCheapest£371Average£550FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£427Average£560FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£441Average£621FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£449Average£553FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Air FranceCheapest£453Average£636FlexibilityNo cancel feeOn-time77%
Search Air France flights
IberiaCheapest£461Average£594FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£462Average£592FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£478Average£560FlexibilityNo cancel feeOn-time75%
Search KLM flights
American AirlinesCheapest£480Average£774FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

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Can Cheapflights find flights from Dulles Intl to London with no change fees?

Certainly. Search results for flights to London from Dulles Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Dulles Intl to London become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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