Cheap flights from Washington to London (LON) from $251

This is the cheapest one-way flight price, found on 10/1. Prices may vary by date and flight preferences.
SEA — LON
oct. 8 — oct. 151

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

Find a great deal and save up to 35% by booking at least 33 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from State of Washington to London within the next two weeks, with the cheapest ticket starting at $1,074.

What is the cheapest month to fly from State of Washington to London?

The best pricing can be found in the month of February. Prices to London from State of Washington average $923. You can even find prices in February for less than $923, as users have found deals to London from as low as $574. The month of July appears to be one of the more expensive times to travel to London from State of Washington. Flying in the targeted month can save you up to 27%.

When is the cheapest time to fly from State of Washington to London (WA - 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.

Cheap United Airlines flights from Washington to London

Take a look at some of the lowest-priced United Airlines flights heading from Washington to London. Be sure to come back soon if the deals available don't appeal to you at this time.

Cheap Virgin Atlantic flights from Washington to London

Some of the best deals we've found on Virgin Atlantic flights traveling from Washington to London. Deals are refreshing constantly so come back soon for more options.

Cheap Washington to London flights in October & November 2023

The best prices found for Washington to LON flights for October, November
Listed are some of the best fares we've found on flights departing from Washington to London in 2023. Check back regularly for other flight deals.

Washington to London 2023 flight deals

Cheap flights to London from Washington found for this year
Listed are some of the best fares we've found on flights departing from Washington to London in 2023. Check back regularly for other flight deals.

Non-stop flights to London from Washington

Save time with Washington to London direct flight deals
To help reduce your travel time, choose from one of these non-stop flights from Washington to London. Search for alternative flights from Washington to London by utilizing the search form above.

Washington to London flights leaving soon

Late deals on return flights to London from Washington, departing today and this week
Users seeking a last-minute flight from Washington to London should consider booking one of these fares. It's wise to confirm all flight details are correct before booking.

One-way flights to London from Washington

The cheapest one-way flights from Washington to London
If you're seeking multiple options on one-way flights from Washington to London, be sure to check out these deals, which are updated often. Those seeking round-trip flights from Washington to London should utilize the search form at the the top of the page.

Find flights from Washington to London within your budget

Use the slider to find flights from Washington to London that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$591 - $678

Route

Depart

Return

Price

Seattle/Tacoma IntlLondon Gatwick

SEA - LGW

SEALGW

Seattle/Tacoma Intl

jue. 11/2

1 stop12h 20m

London Gatwick

jue. 11/30

1 stop13h 00m

Seattle/Tacoma IntlLondon Gatwick

SEA - LGW

SEALGW

Seattle/Tacoma Intl

lun. 11/6

1 stop14h 40m

London Gatwick

mié. 11/8

1 stop15h 10m

SpokaneLondon Heathrow

GEG - LHR

GEGLHR

Spokane

mar. 1/23

1 stop16h 55m

London Heathrow

mar. 1/30

2 stops22h 22m

Pasco Tri CitiesLondon Heathrow

PSC - LHR

PSCLHR

Pasco Tri Cities

mié. 3/6

1 stop20h 30m

London Heathrow

mié. 3/13

2 stops19h 57m

SpokaneLondon Heathrow

GEG - LHR

GEGLHR

Spokane

lun. 1/22

2 stops21h 31m

London Heathrow

vie. 2/2

2 stops30h 58m

Seattle/Tacoma IntlLondon Heathrow

SEA - LHR

SEALHR

Seattle/Tacoma Intl

mié. 11/1

1 stop15h 10m

London Heathrow

mié. 11/8

1 stop14h 00m

Pasco Tri CitiesLondon Heathrow

PSC - LHR

PSCLHR

Pasco Tri Cities

mié. 11/1

1 stop15h 05m

London Heathrow

jue. 11/9

2 stops17h 58m

Pasco Tri CitiesLondon Heathrow

PSC - LHR

PSCLHR

Pasco Tri Cities

mié. 11/1

2 stops19h 00m

London Heathrow

mié. 11/8

2 stops19h 18m

Seattle/Tacoma IntlLondon Heathrow

SEA - LHR

SEALHR

Seattle/Tacoma Intl

lun. 11/20

2 stops16h 15m

London Heathrow

mar. 11/28

2 stops16h 01m

Flights are sorted by cheapest first

Deals found on 10/2

Reviews of airlines servicing London

Peruse reviews from past customers who have flown with United Airlines, Virgin Atlantic and KLM 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.
Alaska Airlines
8.1
Very good
1,394 reviews

Entertainment

7.2

Food

7.2

Overall

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Reviews

1 / 10

Due to gate changes and poor announcing, I was unable to board my flight to Missoula. I received no refund. As a person who flies 3-5 times a year, god willing for another 40 years or so, I will strive to never fly Alaska Airlines again.

Alaska Airlines
8.1
Very good
1,394 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Entertainment

7.2

Food

7.2

Overall

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Reviews

1 / 10

Due to gate changes and poor announcing, I was unable to board my flight to Missoula. I received no refund. As a person who flies 3-5 times a year, god willing for another 40 years or so, I will strive to never fly Alaska Airlines again.

Delta
7.9
Good
3,023 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Entertainment

7.2

Food

7.2

Overall

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Reviews

1 / 10

Due to gate changes and poor announcing, I was unable to board my flight to Missoula. I received no refund. As a person who flies 3-5 times a year, god willing for another 40 years or so, I will strive to never fly Alaska Airlines again.

Air France
7.6
Good
274 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Entertainment

7.2

Food

7.2

Overall

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Reviews

1 / 10

Due to gate changes and poor announcing, I was unable to board my flight to Missoula. I received no refund. As a person who flies 3-5 times a year, god willing for another 40 years or so, I will strive to never fly Alaska Airlines again.

Finnair
7.5
Good
342 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Entertainment

7.2

Food

7.2

Overall

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Reviews

1 / 10

Due to gate changes and poor announcing, I was unable to board my flight to Missoula. I received no refund. As a person who flies 3-5 times a year, god willing for another 40 years or so, I will strive to never fly Alaska Airlines again.

KLM
7.5
Good
196 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Entertainment

7.2

Food

7.2

Overall

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Reviews

1 / 10

Due to gate changes and poor announcing, I was unable to board my flight to Missoula. I received no refund. As a person who flies 3-5 times a year, god willing for another 40 years or so, I will strive to never fly Alaska Airlines again.

Related info for your journey

Useful info, stats and facts about Washington to London flights.

Can I find flights from State of Washington to London for under $600 on Cheapflights?

Yes, there are multiple flights from State of Washington to London for under $600. The cheapest flight booked recently is on Icelandair for just $591, but on average you can expect to pay $601.

Are there nonstop flights from State of Washington to London for under $700 on Cheapflights?

Cheapflights has at least 20 direct flights from State of Washington to London under $700. A good price for a nonstop flight from State of Washington to London is less than $744.

Are there last-minute flights available from State of Washington to London for under $800?

There are currently 20+ open flights from State of Washington to London within the next 7 days for less than $800.

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

What are the most popular airlines that fly from State of Washington to London?

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

No one likes to see their flight delayed. When booking a flight from State of Washington to London consider choosing Alaska Airlines (90%), Aeromexico (83%) or Singapore Airlines (83%) as they are the most reliable in getting you off to your destination on time.

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

The cheapest flight price from State of Washington to London is $554. On average you can expect to pay $1,790. The most popular route, (Seattle/Tacoma Intl - London Heathrow), can usually be booked for $593.

What does SEA to LHR mean?

SEA stands for Seattle/Tacoma Intl Airport, while LHR stands for London Heathrow Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry. Ready for more IATA code knowledge? These are related airports for your current travel destination: London Gatwick Airport (LGW), London Stansted Airport (STN), London City Airport (LCY), London Luton Airport (LTN), London Southend Airport (SEN).

Departure points for flights from Washington to London

Select to see more specific information for flights to London from all departure points in Washington

Top 10 airlines flying from Washington to London

The chart below displays the airlines Cheapflights users traveling from Washington to London choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$402Average$835FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest$476Average$753FlexibilityNo cancel feeOn-time76%
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Aer LingusCheapest$524Average$819FlexibilityNo cancel feeOn-timeN/A
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Virgin AtlanticCheapest$551Average$1,118FlexibilityNo cancel feeOn-time72%
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FinnairCheapest$578Average$784FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest$603Average$859FlexibilityNo cancel feeOn-time75%
Search KLM flights
IberiaCheapest$623Average$911FlexibilityNo cancel feeOn-time77%
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DeltaCheapest$624Average$930FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$638Average$909FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
British AirwaysCheapest$642Average$933FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Hourly flight availability from Washington to London

See what time of day planes typically take off from Washington to London
1%of flight departuresEarly morningMidnight to 6 am
0%of flight departuresMorning6 am to noon
47%of flight departuresAfternoonNoon to 6 pm
52%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

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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?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to London from Washington.

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

Need flexible booking options for your flight to London from Washington? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights 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 essentially offers users the ability to be notified when flight prices change. Track prices for your flight to London from Washington today and book when you’re ready!

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