When did momondo last update prices for flights from London Luton Airport to Seattle/Tacoma Intl Airport?

Prices for flights from London Luton Airport to Seattle/Tacoma Intl Airport refresh daily.

How old do you have to be to fly from London Luton Airport to Seattle/Tacoma Intl Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Luton Airport to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£399 Cheap Flights from London Luton Airport to Seattle in 2025/26

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Find the cheapest flights from London Luton Airport to Seattle

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

07:00 - 10:25

LTN

SEA

35h 25m3 stops

14:35 - 17:00

SEA

LTN

18h 25m2 stops

£584Multiple Airlines

Sun, 1 Feb - Sun, 8 Feb

07:20 - 09:15

LTN

SEA

33h 55m3 stops

14:35 - 21:20

SEA

LTN

22h 45m2 stops

£592Multiple Airlines

Mon, 9 Feb - Mon, 23 Feb

07:00 - 09:15

LTN

SEA

34h 15m3 stops

11:55 - 21:50

SEA

LTN

25h 55m3 stops

£593Multiple Airlines

Wed, 14 Jan - Mon, 19 Jan

05:50 - 17:00

LTN

SEA

19h 10m2 stops

14:35 - 15:25

SEA

LTN

16h 50m2 stops

£594Multiple Airlines

Fri, 30 Jan - Fri, 6 Feb

06:50 - 17:00

LTN

SEA

18h 10m2 stops

14:35 - 17:05

SEA

LTN

18h 30m2 stops

£596Multiple Airlines

Wed, 14 Jan - Wed, 21 Jan

09:00 - 17:00

LTN

SEA

16h 00m2 stops

14:35 - 22:00

SEA

LTN

23h 25m2 stops

£600Multiple Airlines

Sat, 31 Jan - Sun, 15 Feb

07:00 - 09:15

LTN

SEA

34h 15m3 stops

14:35 - 17:00

SEA

LTN

18h 25m2 stops

£600Multiple Airlines

Wed, 4 Feb - Sun, 8 Feb

07:20 - 09:31

LTN

SEA

34h 11m3 stops

14:35 - 17:00

SEA

LTN

18h 25m2 stops

£603Multiple Airlines

Mon, 2 Feb - Sat, 7 Feb

07:15 - 09:15

LTN

SEA

34h 00m3 stops

15:10 - 21:50

SEA

LTN

22h 40m2 stops

£607Multiple Airlines

Thu, 15 Jan - Thu, 22 Jan

09:00 - 17:00

LTN

SEA

16h 00m2 stops

14:35 - 18:15

SEA

LTN

19h 40m2 stops

£610Multiple Airlines

Sat, 31 Jan - Sat, 7 Feb

momondo Fare Finder

Use the filters below to find and compare flights from London Luton Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sun 1/2

07:00-10:25

3 stops35h 25m

Seattle/Tacoma Intl

Sun 8/2

14:35-17:00

2 stops18h 25m

£584

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 9/2

07:20-09:15

3 stops33h 55m

Seattle/Tacoma Intl

Mon 23/2

14:35-21:20

2 stops22h 45m

£592

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 14/1

07:00-09:15

3 stops34h 15m

Seattle/Tacoma Intl

Mon 19/1

11:55-21:50

3 stops25h 55m

£593

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 30/1

05:50-17:00

2 stops19h 10m

Seattle/Tacoma Intl

Fri 6/2

14:35-15:25

2 stops16h 50m

£594

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 14/1

06:50-17:00

2 stops18h 10m

Seattle/Tacoma Intl

Wed 21/1

14:35-17:05

2 stops18h 30m

£596

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sat 31/1

09:00-17:00

2 stops16h 00m

Seattle/Tacoma Intl

Sun 15/2

14:35-22:00

2 stops23h 25m

£600

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 4/2

07:00-09:15

3 stops34h 15m

Seattle/Tacoma Intl

Sun 8/2

14:35-17:00

2 stops18h 25m

£600

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 2/2

07:20-09:31

3 stops34h 11m

Seattle/Tacoma Intl

Sat 7/2

14:35-17:00

2 stops18h 25m

£603

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 15/1

07:15-09:15

3 stops34h 00m

Seattle/Tacoma Intl

Thu 22/1

15:10-21:50

2 stops22h 40m

£607

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sat 31/1

09:00-17:00

2 stops16h 00m

Seattle/Tacoma Intl

Sat 7/2

14:35-18:15

2 stops19h 40m

£610

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London Luton Airport to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Seattle?

According to our data, Wednesday is the cheapest day to fly to Seattle from London Luton Airport. The lowest ticket price found for a Wednesday departure recently was £589. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Seattle on Sunday is £661.

What is the cheapest time of day to depart on your flight to Seattle?

According to our data, the cheapest time of day to fly to Seattle is in the evening. momondo users have found flights departing from London Luton Airport to Seattle in the evening for as low as £528. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive, with an average ticket price of £621.

When to book flights from London Luton Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from London Luton Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap London Luton Airport to Seattle (LTN to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Luton Airport to Seattle

Fastest flight time	13h 30m
Direct flights	None

The fastest flight from London Luton Airport to Seattle takes 13h 30m

There are no direct flights from London Luton Airport to Seattle. There are no popular flight routes from London Luton Airport to Seattle.

Search flight deals

How far is London Luton to Seattle/Tacoma Intl by plane?
There are 4754.4 mi between London Luton and Seattle/Tacoma Intl. A reasonable flight in good conditions will take 13h 30m.
When did momondo last update prices for flights from London Luton Airport to Seattle/Tacoma Intl Airport?
Prices for flights from London Luton Airport to Seattle/Tacoma Intl Airport refresh daily.
How old do you have to be to fly from London Luton Airport to Seattle/Tacoma Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Luton Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Fife

Renton

SeaTac

Tukwila

Why use momondo?

Why should I use momondo to find a flight deal from London to Seattle?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Seattle . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from London to Seattle with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seattle from London with this policy.

How can momondo help me find flights from London to Seattle?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Seattle.

I’m not ready to book a flight from London to Seattle right now. Can momondo alert me if prices change?

If you are not ready to book a flight from London to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.