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$503+ 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 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$642
(Mytrip)

One-way from

$503
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$677
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. 13% potential increase in price ($113 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 17, 2025.

This Mytrip deal was found by Cheapflights users on 9/15. 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.
Mon 11/36:00 amLTN - SEA
2 stops19h 00mMultiple Airlines
Sun 11/162:35 pmSEA - LTN
2 stops23h 25mMultiple Airlines
Deal found 9/15$642
This Mytrip deal was found by Cheapflights users on 9/15. 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.
Wed 10/1510:00 amLTN - SEA
1 stop15h 50mMultiple Airlines
Mon 10/207:35 pmSEA - LTN
1 stop17h 50mMultiple Airlines
Deal found 9/15$667
This Mytrip deal was found by Cheapflights users on 9/17. 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.
Thu 10/2312:35 pmLTN - SEA
1 stop13h 15mMultiple Airlines
Sun 10/269:05 pmSEA - LTN
1 stop17h 55mMultiple Airlines
Deal found 9/17$669
This Mytrip deal was found by Cheapflights users on 9/17. 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.
Wed 10/157:20 pmLTN - SEA
2 stops24h 35mMultiple Airlines
Wed 10/226:50 pmSEA - LTN
2 stops17h 55mMultiple Airlines
Deal found 9/17$678
This Mytrip deal was found by Cheapflights users on 9/15. 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.
Mon 12/86:00 amLTN - SEA
2 stops19h 00mMultiple Airlines
Sun 12/142:35 pmSEA - LTN
2 stops23h 25mMultiple Airlines
Deal found 9/15$680
This Mytrip deal was found by Cheapflights users on 9/16. 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.
Mon 10/69:00 amLTN - SEA
2 stops16h 50mMultiple Airlines
Fri 10/103:45 pmSEA - LTN
2 stops22h 00mMultiple Airlines
Deal found 9/16$723
This Mytrip deal was found by Cheapflights users on 9/17. 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.
Sat 11/16:00 amLTN - SEA
2 stops19h 00mMultiple Airlines
Sat 11/82:35 pmSEA - LTN
2 stops17h 30mMultiple Airlines
Deal found 9/17$726
This Mytrip deal was found by Cheapflights users on 9/15. 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.
Mon 10/139:00 amLTN - SEA
2 stops16h 50mMultiple Airlines
Mon 10/203:45 pmSEA - LTN
2 stops16h 15mMultiple Airlines
Deal found 9/15$766
This Mytrip deal was found by Cheapflights users on 9/16. 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.
Fri 10/319:00 amLTN - SEA
2 stops16h 00mMultiple Airlines
Fri 11/72:35 pmSEA - LTN
2 stops23h 20mMultiple Airlines
Deal found 9/16$859
This Mytrip deal was found by Cheapflights users on 9/16. 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.
Sat 10/46:05 amLTN - SEA
3 stops38h 30mMultiple Airlines
Thu 10/168:40 amSEA - LTN
2 stops28h 00mMultiple Airlines
Deal found 9/16$864
This Mytrip deal was found by Cheapflights users on 9/15. 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.
Wed 9/246:05 amLTN - SEA
2 stops22h 35mMultiple Airlines
Mon 9/297:00 pmSEA - LTN
2 stops15h 30mMultiple Airlines
Deal found 9/15$873

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 September 17, 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

Mon 11/3

6:00 am-5:00 pm

2 stops19h 00m

Seattle/Tacoma Intl

Sun 11/16

2:35 pm-10:00 pm

2 stops23h 25m

$642

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 10/15

7:20 pm-11:55 am

2 stops24h 35m

Seattle/Tacoma Intl

Wed 10/22

6:50 pm-8:45 pm

2 stops17h 55m

$678

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 12/8

6:00 am-5:00 pm

2 stops19h 00m

Seattle/Tacoma Intl

Sun 12/14

2:35 pm-10:00 pm

2 stops23h 25m

$680

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 10/6

9:00 am-5:50 pm

2 stops16h 50m

Seattle/Tacoma Intl

Fri 10/10

3:45 pm-9:45 pm

2 stops22h 00m

$723

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sat 11/1

6:00 am-6:00 pm

2 stops19h 00m

Seattle/Tacoma Intl

Sat 11/8

2:35 pm-4:05 pm

2 stops17h 30m

$726

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 10/31

9:00 am-6:00 pm

2 stops16h 00m

Seattle/Tacoma Intl

Fri 11/7

2:35 pm-9:55 pm

2 stops23h 20m

$859

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sun 10/5

7:25 pm-5:15 pm

2 stops29h 50m

Seattle/Tacoma Intl

Thu 10/9

12:30 pm-7:25 pm

2 stops22h 55m

$880

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 10/15

6:15 am-8:40 pm

1 stop22h 25m

Seattle/Tacoma Intl

Mon 10/20

2:05 pm-4:00 pm

2 stops17h 55m

$893

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 10/7

6:05 am-10:59 am

3 stops36h 54m

Seattle/Tacoma Intl

Fri 10/10

1:50 pm-9:00 pm

2 stops23h 10m

$912

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 11/6

6:15 am-5:00 pm

2 stops18h 45m

Seattle/Tacoma Intl

Thu 11/13

2:35 pm-3:50 pm

2 stops17h 15m

$959

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 22 results
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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 $387). 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 Seattle?

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