S$ 285 Cheap Flights from Seattle to London (SEA-LON)

Cheap Flights from Seattle to London

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Cheap Flights from Seattle to London starting at CNY 285

We've found these cheap flights for you. You can book one-way or return flight tickets.

One way
Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Cheapest time to fly from Seattle to London

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Displayed prices are calculated based on the lowest average weekly prices of the corresponding route on Trip.com.

Cheapest Airlines flying from Seattle to London

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines

From S$ 286

Jetblue Airways

From S$ 346

American Airlines

From S$ 347

Delta Air Lines

From S$ 366

Sun Country Airlines

From S$ 394

United Airlines

From S$ 417

Spirit Airlines

From S$ 446

Icelandair

From S$ 466

Southwest Airlines

From S$ 526

Finnair

From S$ 599

ANA airlines

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Alternative Routes from Seattle to London

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Seattle to London.

Cheapest
SEA
09:55
41h 0m
2 transfer
LGW
10:55
Seattle-Tacoma International Airport - London Gatwick Airport
Wed, Apr 24Frontier Airlines
S$ 286
SEA
13:50
33h 55m
2 transfer
STN
07:45
Seattle-Tacoma International Airport - London Stansted Airport
Mon, May 27Westjet
S$ 377
SEA
07:00
40h 50m
2 transfer
LTN
07:50
Seattle-Tacoma International Airport - London Luton Airport
Sun, May 26Westjet
S$ 383
SEA
07:00
40h 50m
2 transfer
LTN
07:50
Seattle-Tacoma International Airport - London Luton Airport
Sun, May 26Westjet
S$ 383
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Frequently Asked Questions

When to buy flight tickets from Seattle (SEA) to London (LON) the cheapest?
Airlines adjust prices for flights from Seattle to London based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much is a flight from Seattle (SEA) to London (LON) cost?
According to Trip.com's data, the lowest price is around S$ 1,576.
How long is a flight from Seattle (SEA) to London (LON)?
It takes about 9 hours 24 minutes to fly from Seattle (SEA) to London (LON).
What is the transportation method from the main airport to downtown in London?
- The distance from London Gatwick Airport to downtown is about 39km, by taxi about 50 minutes.
- The distance from London Heathrow Airport to downtown is about 23km, by taxi about 40 minutes.
- The distance from London Luton Airport to downtown is about 44km, by taxi about 1 hour.
What time does the latest flight from Seattle to London depart?
The latest flight departs from Seattle (SEA) at 19:45 and arrives in London (LHR) at 12:05.
What are the most popular airlines that fly from Seattle (SEA) to London (LON)?
Airlines with flights from Seattle (SEA) to London (LON): Delta Air Lines, KLM Royal Dutch Airlines, IBERIA, Aeromexico, Singapore Airlines, Aer Lingus, Virgin Atlantic, Finnair, Air France, American Airlines and British Airways.
What's the most popular airline for direct flights from Seattle (SEA) to London (LON)?
Virgin Atlantic operates 12 direct flights from Seattle (SEA) to London (LON).
How many airports in London?
There are 7 airports near London: London Heathrow Airport, London Gatwick Airport, London Luton Airport, London City Airport, London Biggin Hill Airport, London Southend Airport and London Stansted Airport.

How to find a cheap flight from Seattle to London

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Seattle to London. Book your flights at the right time and save more.

Book Early

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Compare Flight Prices

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Look Out for Deals

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Check One-way Fares

Buying two cheap one-way flights can sometimes be a better deal than a round-trip.

Try Different Dates

Flying during the week, early in the morning, or late at night can help save money.

Use the Trip.com App

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Find cheapest flight ticket from Seattle to London

Cheapest direct flight price	S$ 284
Cheapest return ticket price	S$ 880
Cheapest month	May
Peak season for travel	October
Flight distance	7,711.56km
Average flight time	9 hours 24 minutes
Popular airline	Aer Lingus