How long is the flight from State of Washington to London?

United Airlines, Scandinavian Airlines, and Delta can get you from State of Washington to London in just under 15h 05m. Your travel time can differ by up to 19h 50m. The distance from State of Washington to London is about 4763 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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.

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).

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 Stansted.

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

On average you can expect to pay £563 for a flight from State of Washington to London. The cheapest flight overall is £239 while the most popular route, (Seattle/Tacoma Intl - London Heathrow) is currently priced at £478.

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: KLM (93%), SAUDIA (93%), Air France (93%).

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.

£254+ Cheap Flights from Washington to London

Cheap flight deals from Washington to London

Enter your travel dates to find the best prices.

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Best

Direct

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One-way

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 7 October 2026.

Fri 30/1010:39 -

2 stops24h 51m

Sun 1/1106:40 -

2 stops21h 24m

Deal found 3/10£567

Tue 3/1108:40 -

3 stops24h 10m

Sat 7/1118:40 -

3 stops34h 19m

Deal found 3/10£568

Mon 2/1114:35 -

2 stops18h 20m

Mon 9/1121:00 -

3 stops28h 00m

Deal found 3/10£570

Tue 20/1018:05 -

1 stop16h 45m

Tue 27/1010:25 -

1 stop13h 30m

Deal found 7/10£570

Mon 2/1113:50 -

2 stops19h 05m

Sun 15/1109:15 -

2 stops34h 45m

Deal found 4/10£571

Fri 6/1114:50 -

3 stops34h 20m

Wed 11/1118:05 -

3 stops32h 17m

Deal found 4/10£571

Sun 6/1215:00 -

1 stop20h 25m

Mon 14/1210:25 -

1 stop13h 30m

Deal found 6/10£572

Tue 17/1114:35 -

3 stops22h 45m

Tue 24/1106:40 -

2 stops18h 20m

Deal found 3/10£572

Mon 16/1117:50 -

2 stops22h 05m

Sun 22/1117:25 -

2 stops30h 30m

Deal found 6/10£573

Mon 9/1119:48 -

2 stops35h 22m

Mon 16/1116:10 -

2 stops34h 23m

Deal found 3/10£574

Sat 5/1214:35 -

1 stop12h 15m

Wed 13/112:15 -

1 stop12h 45m

Deal found 7/10£574

Mon 12/1015:40 -

2 stops20h 30m

Mon 19/1021:00 -

3 stops31h 40m

Deal found 7/10£574

Best flights from Washington to London
Discover carefully curated flight deals from Washington to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 October 2026.

Tue 2/312:30 -

1 stop34h 55m

Fri 5/306:35 -

2 stops25h 03m

Deal found 6/10£569

Sun 13/1207:38 -

2 stops17h 42m

Fri 8/106:40 -

2 stops23h 24m

Deal found 6/10£636

Sun 17/115:25 -

1 stop16h 20m

Fri 5/210:00 -

1 stop13h 03m

Deal found 7/10£655

Wed 4/1120:05 -

1 stop29h 05m

Wed 18/1117:25 -

1 stop31h 45m

Deal found 7/10£667

Sun 14/308:00 -

1 stop21h 10m

Fri 2/409:50 -

1 stop13h 16m

Deal found 6/10£687

Sun 14/313:30 -

1 stop15h 40m

Fri 2/410:05 -

1 stop20h 24m

Deal found 7/10£687

Wed 9/1218:45 -

Nonstop9h 35m

Wed 16/1214:45 -

Nonstop10h 15m

Deal found 5/10£700

Fri 6/1113:16 -

2 stops20h 34m

Mon 9/1118:40 -

2 stops36h 27m

Deal found 5/10£729

Fri 6/1106:00 -

2 stops25h 45m

Thu 12/1116:45 -

1 stop30h 29m

Deal found 3/10£736

Wed 4/1116:50 -

Nonstop9h 50m

Sun 15/1112:20 -

Nonstop10h 30m

Deal found 4/10£737

Thu 10/1217:50 -

1 stop17h 35m

Thu 4/210:25 -

1 stop13h 30m

Deal found 5/10£762

Sun 8/1110:27 -

1 stop13h 48m

Mon 23/1110:05 -

1 stop18h 03m

Deal found 4/10£786

Sun 8/1110:26 -

2 stops21h 34m

Mon 23/1110:20 -

2 stops19h 44m

Deal found 4/10£657

Sat 27/316:00 -

1 stop33h 40m

Fri 16/406:55 -

2 stops24h 43m

Deal found 5/10£668

Sun 14/312:35 -

1 stop15h 05m

Fri 2/408:40 -

2 stops22h 58m

Deal found 6/10£678

Tue 17/1105:03 -

1 stop24h 32m

Tue 24/1114:35 -

1 stop17h 07m

Deal found 3/10£711

Tue 8/1218:45 -

Nonstop9h 35m

Sat 6/214:45 -

Nonstop10h 05m

Deal found 5/10£741

Fri 19/320:05 -

1 stop19h 30m

Sat 27/306:30 -

1 stop18h 40m

Deal found 6/10£743

Tue 2/312:45 -

1 stop12h 55m

Fri 5/311:35 -

1 stop17h 27m

Deal found 6/10£684

Tue 8/1216:05 -

1 stop15h 40m

Fri 18/1210:00 -

1 stop13h 13m

Deal found 5/10£685

Tue 17/1105:00 -

2 stops18h 10m

Tue 24/1106:35 -

2 stops22h 22m

Deal found 3/10£709

Sun 14/306:00 -

1 stop17h 25m

Sun 28/317:45 -

Nonstop10h 18m

Deal found 5/10£714

Wed 18/1115:13 -

1 stop13h 07m

Wed 25/1114:45 -

1 stop17h 04m

Deal found 4/10£786

Sat 13/320:05 -

1 stop18h 30m

Sat 20/317:25 -

1 stop31h 45m

Deal found 7/10£795

Wed 18/1105:00 -

2 stops16h 55m

Wed 25/1106:35 -

2 stops22h 22m

Deal found 6/10£711

Sat 16/121:55 -

1 stop14h 15m

Sun 24/112:20 -

Nonstop10h 25m

Deal found 3/10£714

Tue 17/1115:13 -

1 stop13h 07m

Tue 24/1114:45 -

1 stop17h 04m

Deal found 3/10£786

Wed 18/1116:25 -

1 stop16h 05m

Wed 25/1108:40 -

2 stops19h 29m

Deal found 6/10£721

Wed 28/1015:35 -

2 stops24h 00m

Sun 8/1117:25 -

1 stop31h 45m

Deal found 6/10£880

Thu 11/317:00 -

Nonstop9h 40m

Sat 20/308:55 -

1 stop12h 55m

Deal found 7/10£730

Find flight deals from Washington to London

Round-trip from	£566
One-way from	£254
Popular in	June
Cheapest in	January
Average price	£622
Good round-trip deal	£737 or less
Good one-way deal	£293 or less

Icelandair
17/2-24/2
1 total stop
22h 10m total
Washington to London

Search Deals

Icelandair
16/10-31/12
1 total stop
11h 40m total
Washington to London

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (£103 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Price to beat on a round-trip flight from Washington to London (LON).

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Price to beat on a one-way flight from Washington to London (LON).

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Fri 2/4

19:00-11:55

1 stop32h 55m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£257

Fastest return journey

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Sat 3/4

13:35-06:50

Nonstop9h 15m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£283

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Fri 2/4

21:50-15:35

Nonstop9h 45m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£283

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Thu 7/1

08:30-10:50

3 stops18h 20m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£286

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Sat 6/2

16:05-15:45

1 stop15h 40m

London Gatwick

Wed 31/12

00:00-15:00

Nonstop0h 00m

£286

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Fri 5/2

15:30-15:45

1 stop16h 15m

London Gatwick

Wed 31/12

00:00-15:00

Nonstop0h 00m

£286

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Sat 27/2

16:05-15:45

1 stop15h 40m

London Gatwick

Wed 31/12

00:00-15:00

Nonstop0h 00m

£286

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Thu 4/2

16:05-15:45

1 stop15h 40m

London Gatwick

Wed 31/12

00:00-15:00

Nonstop0h 00m

£286

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Fri 26/2

15:30-15:45

1 stop16h 15m

London Gatwick

Wed 31/12

00:00-15:00

Nonstop0h 00m

£286

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Fri 29/1

06:05-09:00

2 stops18h 55m

London Gatwick

Wed 31/12

00:00-15:00

Nonstop0h 00m

£290

Flights are sorted by cheapest return flights first.

Deals found on 5/10

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

SEA-LHR

SEA-LGW

GEG-LHR

ALW-LHR

PSC-LHR

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.

Cheapflights Insights

Everything you need to know about your flight from Washington to London

USWA-LON

SEA-LHR

SEA-LGW

GEG-LHR

ALW-LHR

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 £522). Flying from State of Washington to London in June is currently the most expensive (average of £918). 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?

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

The most flights from USWA to LON are scheduled on a Tuesday (25 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (24 on average).

How much does it cost for a return flight from State of Washington to London?

Airfare is typical for this route at the moment.

State of Washington to London flights typically cost between £540 and £770 in February.
The cheapest return price found within the last 5 days was £566 on Multiple Airlines (17 Feb–24 Feb).

How far ahead should I book a flight from State of Washington to London?

The best time to book flights from State of Washington to London is 64 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

How long is the flight from State of Washington to London?
United Airlines, Scandinavian Airlines, and Delta can get you from State of Washington to London in just under 15h 05m. Your travel time can differ by up to 19h 50m. The distance from State of Washington to London is about 4763 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
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 Stansted.
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: KLM (93%), SAUDIA (93%), Air France (93%).
What are the cheapest flights from State of Washington to London?
On average you can expect to pay £563 for a flight from State of Washington to London. The cheapest flight overall is £239 while the most popular route, (Seattle/Tacoma Intl - London Heathrow) is currently priced at £478.
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 £522). Flying from State of Washington to London in June is currently the most expensive (average of £918). 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.

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Top 3 airlines flying from Washington to London

Airline	Cheapest	Average	Flexibility	On-time
Alaska Airlines	Cheapest£498	Average£737	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights
British Airways	Cheapest£526	Average£690	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Virgin Atlantic	Cheapest£559	Average£663	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights

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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.

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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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Cheap flights from Washington to London from £254

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Washington to London

Cheapest flights from Washington to LondonExplore 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 7 October 2026.

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 7 October 2026.

Best flights from Washington to LondonDiscover carefully curated flight deals from Washington to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 October 2026.

Discover carefully curated flight deals from Washington to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 October 2026.

Direct flights from Washington to LondonExplore direct flight options from Washington to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 7 October 2026.

Explore direct flight options from Washington to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 7 October 2026.

Last-minute flights from Washington to LondonDiscover last-minute flight deals from Washington to London. Data last updated 7 October 2026 and is based on user searches.

Discover last-minute flight deals from Washington to London. Data last updated 7 October 2026 and is based on user searches.

One-way flights from Washington to LondonSearch for one-way flight options from Washington to London. Find affordable one-way fares based on user searches. Data last updated 7 October 2026.

Search for one-way flight options from Washington to London. Find affordable one-way fares based on user searches. Data last updated 7 October 2026.

Find flight deals from Washington to London

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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.

Cheapflights Insights

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

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 7 October 2026.

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 7 October 2026.

The most flights from USWA to LON are scheduled on a Tuesday (25 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (24 on average).

How much does it cost for a return flight from State of Washington to London?

Airfare is typical for this route at the moment.

State of Washington to London flights typically cost between £540 and £770 in February.The cheapest return price found within the last 5 days was £566 on Multiple Airlines (17 Feb–24 Feb).

How far ahead should I book a flight from State of Washington to London?

The best time to book flights from State of Washington to London is 64 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

How long is the flight from State of Washington to London?

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

What are the most reliable airlines from State of Washington to London?

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

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

How can I find direct flights from Washington to London?

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

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

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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 7 October 2026.

Best flights from Washington to London
Discover carefully curated flight deals from Washington to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 October 2026.

Direct flights from Washington to London
Explore direct flight options from Washington to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 7 October 2026.

Last-minute flights from Washington to London
Discover last-minute flight deals from Washington to London. Data last updated 7 October 2026 and is based on user searches.

One-way flights from Washington to London
Search for one-way flight options from Washington to London. Find affordable one-way fares based on user searches. Data last updated 7 October 2026.

State of Washington to London flights typically cost between £540 and £770 in February.
The cheapest return price found within the last 5 days was £566 on Multiple Airlines (17 Feb–24 Feb).