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Cheap flights from London Luton Airport to Seattle from £384

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Luton Airport to Seattle departing on 1/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from London Luton Airport to Seattle

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
20:55 - 15:40LTN  London Luton-SEA Seattle/Tacoma Intl
26h 45m2 stops Venice Marco Polo Frankfurt am Main
Multiple Airlines Logo
18:05 - 20:10SEA  Seattle/Tacoma Intl-LTN London Luton
18h 05m2 stops Frankfurt am Main Venice Marco Polo
£481Multiple Airlines
Tue, 29 Sep - Tue, 6 Oct
Multiple Airlines Logo
21:50 - 16:00LTN  London Luton-SEA Seattle/Tacoma Intl
26h 10m2 stops Rome Fiumicino Frankfurt am Main
Multiple Airlines Logo
17:40 - 21:05SEA  Seattle/Tacoma Intl-LTN London Luton
19h 25m2 stops Frankfurt am Main Rome Fiumicino
£550Multiple Airlines
Wed, 7 Oct - Wed, 21 Oct
Multiple Airlines Logo
21:50 - 16:00LTN  London Luton-SEA Seattle/Tacoma Intl
26h 10m2 stops Rome Fiumicino Frankfurt am Main
Multiple Airlines Logo
17:40 - 21:05SEA  Seattle/Tacoma Intl-LTN London Luton
19h 25m2 stops Frankfurt am Main Rome Fiumicino
£551Multiple Airlines
Thu, 8 Oct - Wed, 21 Oct
Multiple Airlines Logo
21:50 - 16:00LTN  London Luton-SEA Seattle/Tacoma Intl
26h 10m2 stops Rome Fiumicino Frankfurt am Main
Multiple Airlines Logo
17:40 - 21:05SEA  Seattle/Tacoma Intl-LTN London Luton
19h 25m2 stops Frankfurt am Main Rome Fiumicino
£553Multiple Airlines
Thu, 8 Oct - Wed, 21 Oct
Multiple Airlines Logo
21:50 - 16:00LTN  London Luton-SEA Seattle/Tacoma Intl
26h 10m2 stops Rome Fiumicino Frankfurt am Main
Multiple Airlines Logo
17:40 - 21:05SEA  Seattle/Tacoma Intl-LTN London Luton
19h 25m2 stops Frankfurt am Main Rome Fiumicino
£555Multiple Airlines
Thu, 8 Oct - Wed, 21 Oct
Multiple Airlines Logo
21:50 - 16:00LTN  London Luton-SEA Seattle/Tacoma Intl
26h 10m2 stops Rome Fiumicino Frankfurt am Main
Multiple Airlines Logo
17:40 - 21:05SEA  Seattle/Tacoma Intl-LTN London Luton
19h 25m2 stops Frankfurt am Main Rome Fiumicino
£558Multiple Airlines
Thu, 8 Oct - Wed, 21 Oct
Multiple Airlines Logo
21:50 - 16:00LTN  London Luton-SEA Seattle/Tacoma Intl
26h 10m2 stops Rome Fiumicino Frankfurt am Main
Multiple Airlines Logo
17:40 - 21:05SEA  Seattle/Tacoma Intl-LTN London Luton
19h 25m2 stops Frankfurt am Main Rome Fiumicino
£561Multiple Airlines
Thu, 8 Oct - Wed, 21 Oct
Multiple Airlines Logo
18:05 - 09:40LTN  London Luton-SEA Seattle/Tacoma Intl
47h 35m3 stops Lisbon Humberto Delgado Halifax Intl Calgary
Multiple Airlines Logo
19:00 - 22:05SEA  Seattle/Tacoma Intl-LTN London Luton
19h 05m2 stops Reykjavik Keflavik Intl Glasgow Intl
£561Multiple Airlines
Mon, 21 Sep - Mon, 28 Sep
Multiple Airlines Logo
21:50 - 16:00LTN  London Luton-SEA Seattle/Tacoma Intl
26h 10m2 stops Rome Fiumicino Frankfurt am Main
Multiple Airlines Logo
17:40 - 21:05SEA  Seattle/Tacoma Intl-LTN London Luton
19h 25m2 stops Frankfurt am Main Rome Fiumicino
£562Multiple Airlines
Thu, 8 Oct - Wed, 21 Oct
Multiple Airlines Logo
21:50 - 16:00LTN  London Luton-SEA Seattle/Tacoma Intl
26h 10m2 stops Rome Fiumicino Frankfurt am Main
Multiple Airlines Logo
17:40 - 21:05SEA  Seattle/Tacoma Intl-LTN London Luton
19h 25m2 stops Frankfurt am Main Rome Fiumicino
£564Multiple Airlines
Thu, 8 Oct - Wed, 21 Oct

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Customise your flight search to find flights from London Luton Airport to Seattle 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, momondo users made 279,928 searches. Data last updated 17 August 2026.
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

Cheapest return flight
Fastest return journey

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Tue 29/9

20:55-15:40

2 stops26h 45m

Seattle/Tacoma Intl

Tue 6/10

18:05-20:10

2 stops18h 05m

£481

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Wed 7/10

21:50-16:00

2 stops26h 10m

Seattle/Tacoma Intl

Wed 21/10

17:40-21:05

2 stops19h 25m

£550

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Thu 8/10

21:50-16:00

2 stops26h 10m

Seattle/Tacoma Intl

Wed 21/10

17:40-21:05

2 stops19h 25m

£551

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Thu 8/10

21:50-16:00

2 stops26h 10m

Seattle/Tacoma Intl

Wed 21/10

17:40-21:05

2 stops19h 25m

£553

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Thu 8/10

21:50-16:00

2 stops26h 10m

Seattle/Tacoma Intl

Wed 21/10

17:40-21:05

2 stops19h 25m

£555

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Thu 8/10

21:50-16:00

2 stops26h 10m

Seattle/Tacoma Intl

Wed 21/10

17:40-21:05

2 stops19h 25m

£558

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Thu 8/10

21:50-16:00

2 stops26h 10m

Seattle/Tacoma Intl

Wed 21/10

17:40-21:05

2 stops19h 25m

£561

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Mon 21/9

18:05-09:40

3 stops47h 35m

Seattle/Tacoma Intl

Mon 28/9

19:00-22:05

2 stops19h 05m

£561

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Thu 8/10

21:50-16:00

2 stops26h 10m

Seattle/Tacoma Intl

Wed 21/10

17:40-21:05

2 stops19h 25m

£562

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Thu 8/10

21:50-16:00

2 stops26h 10m

Seattle/Tacoma Intl

Wed 21/10

17:40-21:05

2 stops19h 25m

£564

Flights are sorted by cheapest return flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to Seattle from

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, Thursday is the cheapest day to fly to Seattle from London Luton Airport. The lowest ticket price found for a Thursday departure recently was £598. 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 £676.

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 at midday. momondo users have found flights departing from London Luton Airport to Seattle at midday for as low as £579. 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 £631.

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

Best price found

£384

Fastest flight time

15h 45m

Direct flights

None
The best one-way flight to Seattle from London Luton Airport in the past 72 hours is £384. The best return flight deal from London Luton Airport to Seattle found on momondo in the last 72 hours is £481.
The fastest flight from London Luton Airport to Seattle takes 15h 45m
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

Frequently asked questions about flying from London Luton Airport to Seattle

  • 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 15h 45m.

  • 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.

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Westport
Kirkland
Ashford
Tacoma
SeaTac
Tukwila
Fife

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.

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