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Cheap flights from Washington to London from £215

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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LON
22 Jan — 29 Jan1
1 adult

Cheap flight deals from Washington to London

Discover tips and strategies to find the most affordable flight options for your journey from Washington (USWA) 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 17 January 2025.

Round-trip from

£484

One-way from

£215
Iberia
  • Iberia
  • 9/2-25/2
  • Nonstop
  • 19h 20m total
  • Washington to London
Search Deals
9/2
  • 9/2
  • 1 total stop
  • 16h 56m total
  • Washington to London
Search Deals

Find flight deals from Washington to London

Cheapest flights from Washington to London
Explore the most affordable flight options available from Washington to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 January 2025.

Sun 9/218:50SEA - LHR
Nonstop9h 25mIberia
Tue 25/215:00LHR - SEA
Nonstop9h 55mIberia
Deal found 16/1£484
Tue 4/214:35SEA - STN
2 stops23h 25mMultiple Airlines
Tue 11/206:30STN - SEA
2 stops18h 30mMultiple Airlines
Deal found 16/1£485
Tue 4/214:35SEA - LGW
2 stops20h 55mMultiple Airlines
Tue 11/208:50LGW - SEA
2 stops16h 10mMultiple Airlines
Deal found 16/1£485
Wed 5/214:35SEA - LTN
2 stops24h 40mMultiple Airlines
Wed 12/206:50LTN - SEA
2 stops18h 10mMultiple Airlines
Deal found 16/1£485
Tue 4/217:45SEA - LHR
Nonstop9h 25mVirgin Atlantic
Tue 11/206:20LHR - SEA
1 stop13h 00mVirgin Atlantic
Deal found 17/1£486
Sun 21/915:45SEA - LGW
1 stop14h 55mIcelandair
Sat 27/915:40LGW - SEA
1 stop13h 00mIcelandair
Deal found 16/1£488
Thu 25/919:00SEA - LHR
1 stop32h 55mIcelandair
Mon 6/1021:25LHR - SEA
1 stop31h 15mIcelandair
Deal found 16/1£493
Sun 9/214:35SEA - LHR
2 stops21h 30mMultiple Airlines
Thu 27/220:50LHR - SEA
2 stops28h 10mMultiple Airlines
Deal found 16/1£495
Mon 24/218:50SEA - LHR
Nonstop9h 25mBritish Airways
Wed 5/315:00LHR - SEA
Nonstop9h 55mBritish Airways
Deal found 17/1£497
Sun 9/210:35SEA - LHR
2 stops14h 45mAir Canada
Tue 25/213:25LHR - SEA
2 stops16h 42mAir Canada
Deal found 16/1£500
Sun 26/119:04SEA - LHR
Nonstop9h 36mKLM
Mon 3/220:25LHR - SEA
1 stop23h 21mKLM
Deal found 15/1£501
Sun 9/217:45SEA - LHR
Nonstop9h 25mDelta
Thu 13/306:30LHR - SEA
1 stop13h 10mDelta
Deal found 16/1£502

Find flights from Washington to London within your budget

Customise your flight search to find flights from Washington 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 858,174 searches. Data last updated 17 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sun 9/2

18:50-12:15

Nonstop9h 25m

London Heathrow

Tue 25/2

15:00-16:55

Nonstop9h 55m

£484

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Tue 4/2

14:35-22:00

2 stops23h 25m

London Stansted

Tue 11/2

06:30-17:00

2 stops18h 30m

£485

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 4/2

14:35-19:30

2 stops20h 55m

London Gatwick

Tue 11/2

08:50-17:00

2 stops16h 10m

£485

SeattleLondon

SEA - LTN

SEALTN

Seattle/Tacoma Intl

Wed 5/2

14:35-23:15

2 stops24h 40m

London Luton

Wed 12/2

06:50-17:00

2 stops18h 10m

£485

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Tue 4/2

17:45-11:10

Nonstop9h 25m

London Heathrow

Tue 11/2

06:20-11:20

1 stop13h 00m

£486

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 3/3

14:35-10:55

1 stop12h 20m

London Gatwick

Mon 10/3

11:55-18:00

1 stop13h 05m

£492

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Mon 24/2

18:50-12:15

Nonstop9h 25m

London Heathrow

Wed 5/3

15:00-16:55

Nonstop9h 55m

£497

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sun 9/2

10:35-09:20

2 stops14h 45m

London Heathrow

Tue 25/2

13:25-22:07

2 stops16h 42m

£500

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sun 9/2

17:45-11:10

Nonstop9h 25m

London Heathrow

Thu 13/3

06:30-12:40

1 stop13h 10m

£502

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Thu 27/2

14:35-10:50

1 stop12h 15m

London Heathrow

Sun 2/3

20:40-17:00

1 stop28h 20m

£503

Flights are sorted by cheapest return flights first.

Deals found on 16/1

Showing 1-10 of 60 results
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Best time to book a flight from Washington to London

Have a flexible travel schedule? Discover the best time to fly to London from Washington 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 Washington to London

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

What is the cheapest month to book a flight from State of Washington to London?

Currently, January is the cheapest month in which you can book a flight from State of Washington to London (average of £112). Flying from State of Washington to London in August is currently the most expensive (average of £161). 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 WA to LON?

Find hourly flight availability from Washington 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 17 January 2025.

When flying from State of Washington 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.

Weekly flight availability from State of Washington to London

Explore weekly flight availability from Washington to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 17 January 2025.

The most flights from USWA to LON are scheduled on a Wednesday (16 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

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 17 January 2025.
Peruse reviews from past customers who have flown with Iberia, Scandinavian Airlines and Icelandair from Washington to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
8,513 reviews
Check prices

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very Good
8,513 reviews
Delta
8.0
Very Good
8,513 reviews
Check prices

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,339 reviews
Delta
8.0
Very Good
8,513 reviews
Check prices

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.6
Good
1,285 reviews
Delta
8.0
Very Good
8,513 reviews
Check prices

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.5
Good
1,598 reviews
Delta
8.0
Very Good
8,513 reviews
Check prices

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Aeromexico
7.5
Good
1,849 reviews
Delta
8.0
Very Good
8,513 reviews
Check prices

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Washington 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 to fly from State of Washington to London one-way?

    To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at £228. WestJet flights start at £240 while deals on JetBlue start at £265 one-way.

  • What are the most popular routes from State of Washington to London?

    The most popular route from State of Washington to London is Seattle/Tacoma Intl - London Heathrow. You may also consider Seattle/Tacoma Intl - London Gatwick or Seattle/Tacoma Intl - London City.

  • What are the most reliable airlines from State of Washington 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 State of Washington to London on time: Singapore Airlines (85%), Aeromexico (85%), KLM (80%).

  • What are the cheapest flights from State of Washington to London?

    On average you can expect to pay £994 for a flight from State of Washington to London. The cheapest flight overall is £282 while the most popular route, (Seattle/Tacoma Intl - London Heathrow) is currently priced at £367.

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

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

  • How can I find direct flights from Washington to London?

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

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

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to London?

    Currently, January is the cheapest month in which you can book a flight from State of Washington to London (average of £112). Flying from State of Washington to London in August is currently the most expensive (average of £161). 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

Travelling to a place near Washington?

Book flights to Washington if you plan to visit one of these locations
Deal
Hounslow
Gatwick
Milton Keynes
Croydon
Luton
Slough
Ilford
Hayes
Eastbourne
Maidstone
Winchester
Southend-on-Sea
Wembley
Ipswich
Watford
Crawley
Southall
Stansted
High Wycombe

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Alternative routes for Washington to London

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Washington to London

Discover the top 4 airlines that operate flights from Washington 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 858,174 searches. Data last updated 17 January 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£396Average£479FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£472Average£562FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Virgin AtlanticCheapest£491Average£701FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£506Average£882FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Washington to London?

When you search for this flight from Washington to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Washington to London?

Millions of users choose and trust Cheapflights to book the best flight deals from Washington to London for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes! Cheapflights helps users easily find flights from Washington to London with no change fees.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Washington today and book when prices fit your budget.

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