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$540+ Cheap flights from Luton (LTN) to Seattle (SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
Jul 16 — Jul 231
Wed 7/16
Wed 7/23
1 adult, Economy
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Cheap flight deals from Luton to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Luton (LTN) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 11, 2025.

Round-trip from

$742
(Mytrip)

One-way from

$540
(Kiwi.com)

Popular in

August

Cheapest in

January

Average price

$982
From London Luton to Seattle/Tacoma Intl
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One-way flight from London Luton to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 15% potential increase in price ($135 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Luton to Seattle

Cheapest flights from Luton to Seattle
Explore the most affordable flight options available from Luton to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 11, 2025.

This Mytrip deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/249:55 amLTN - SEA
2 stops35h 55mMultiple Airlines
Sun 8/314:00 pmSEA - LTN
2 stops21h 30mMultiple Airlines
Deal found 7/10$742

Cheapflights Fare Finder

Customize your flight search to find flights from Luton 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, Cheapflights users made 2,558,603 searches. Data last updated July 11, 2025.
Use the filters below to find and compare flights from London Luton Airport to Seattle that are best for you.

Fly from

Luton

Fly to

Seattle

Route

Depart

Return

Price

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sun 8/24

9:55 am-1:50 pm

2 stops35h 55m

Seattle/Tacoma Intl

Sun 8/31

4:00 pm-9:30 pm

2 stops21h 30m

$742

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 10/10

9:50 pm-8:04 pm

2 stops30h 14m

$540

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/8

Best time to book a flight from Luton to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Luton with our price prediction graph.
Estimated round-trip 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.

Related info for your journey

Find useful and relevant information for your journey from Luton to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from London Luton?

    Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from London Luton to Seattle. You should not have trouble finding flights to Seattle/Tacoma Intl from London Luton; the airport handles an average of 0 inbound flights from London Luton per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the Seattle airport from London Luton. It is only a 11.4 mi journey from Seattle/Tacoma Intl (SEA) to Seattle’s city center.

  • Can I find deals for flights from Luton to Seattle that include hotel bookings?

    Yes. In addition to deals on Luton to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Luton to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Luton to Seattle.

  • Can I find deals for business class flights from Luton to Seattle?

    Yes. Cheapflights offers flight deals from Luton to Seattle 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 London Luton Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from London Luton Airport to Seattle (average of $238). Flying from London Luton Airport to Seattle in June is currently the most expensive (average of $388). 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.

See more FAQs

Traveling to a place near London Luton Airport?

Book flights to London Luton Airport if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Lynnwood
Renton
Olympia
Shoreline
Puyallup
Cle Elum
Centralia
Kent
Chehalis
Kirkland
Aberdeen
Federal Way
Shelton

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