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Cheap flights from London Luton Airport to Seattle from £342

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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
8 Mar — 15 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Luton to Seattle

Enter your travel dates to find the best prices.

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 6 February 2026.

Wed 22/419:05
LTN
-
SEA
2 stops32h 18m
Multiple Airlines
Tue 5/518:55
SEA
-
LTN
1 stop12h 35m
Multiple Airlines
Deal found 5/2£451
Wed 4/306:50
LTN
-
SEA
2 stops18h 10m
Multiple Airlines
Wed 11/315:35
SEA
-
LTN
2 stops18h 30m
Multiple Airlines
Deal found 4/2£453
Mon 11/508:15
LTN
-
SEA
1 stop16h 55m
Multiple Airlines
Mon 18/518:55
SEA
-
LTN
1 stop19h 55m
Multiple Airlines
Deal found 3/2£495
Sun 3/508:30
LTN
-
SEA
2 stops33h 10m
Multiple Airlines
Sun 17/519:00
SEA
-
LTN
2 stops19h 20m
Multiple Airlines
Deal found 5/2£497
Wed 18/306:50
LTN
-
SEA
1 stop19h 30m
Multiple Airlines
Wed 25/321:05
SEA
-
LTN
1 stop13h 00m
Multiple Airlines
Deal found 4/2£498
Tue 12/509:40
LTN
-
SEA
2 stops19h 00m
Multiple Airlines
Sun 24/515:40
SEA
-
LTN
2 stops22h 00m
Multiple Airlines
Deal found 4/2£501
Wed 2/906:15
LTN
-
SEA
1 stop18h 55m
Multiple Airlines
Wed 16/918:55
SEA
-
LTN
1 stop12h 30m
Multiple Airlines
Deal found 3/2£516
Mon 13/418:40
LTN
-
SEA
2 stops32h 45m
Multiple Airlines
Wed 6/518:55
SEA
-
LTN
1 stop12h 30m
Multiple Airlines
Deal found 4/2£520
Wed 1/406:15
LTN
-
SEA
1 stop18h 55m
Multiple Airlines
Tue 14/418:55
SEA
-
LTN
1 stop12h 35m
Multiple Airlines
Deal found 3/2£522
Wed 13/506:15
LTN
-
SEA
2 stops21h 04m
Multiple Airlines
Tue 19/518:55
SEA
-
LTN
1 stop12h 35m
Multiple Airlines
Deal found 5/2£529
Mon 20/408:15
LTN
-
SEA
3 stops38h 04m
Multiple Airlines
Sat 2/519:00
SEA
-
LTN
2 stops18h 00m
Multiple Airlines
Deal found 3/2£537

Find 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 6 February 2026.

Round-trip from

£451

One-way from

£342

Popular in

July

Cheapest in

February

Average price

£453
22/4-5/5
  • 22/4-5/5
  • 3 total stops
  • 44h 53m total
  • London to Seattle
Search Deals
1/4
  • 1/4
  • 2 total stops
  • 35h 30m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 6 February 2026.
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

Wed 22/4

19:05-19:23

2 stops32h 18m

Seattle/Tacoma Intl

Tue 5/5

18:55-15:30

1 stop12h 35m

£451

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 4/3

06:50-17:00

2 stops18h 10m

Seattle/Tacoma Intl

Wed 11/3

15:35-17:05

2 stops18h 30m

£453

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sun 3/5

08:30-09:40

2 stops33h 10m

Seattle/Tacoma Intl

Sun 17/5

19:00-22:20

2 stops19h 20m

£497

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 12/5

09:40-20:40

2 stops19h 00m

Seattle/Tacoma Intl

Sun 24/5

15:40-21:40

2 stops22h 00m

£501

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 1/4

06:15-17:10

1 stop18h 55m

Seattle/Tacoma Intl

Tue 14/4

18:55-15:30

1 stop12h 35m

£522

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 20/4

08:15-14:19

3 stops38h 04m

Seattle/Tacoma Intl

Sat 2/5

19:00-21:00

2 stops18h 00m

£537

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sat 2/5

11:00-17:10

1 stop14h 10m

Seattle/Tacoma Intl

Tue 12/5

18:55-15:30

1 stop12h 35m

£539

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 9/3

07:20-22:57

3 stops22h 37m

Seattle/Tacoma Intl

Tue 24/3

15:35-22:10

2 stops23h 35m

£564

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 24/4

06:05-22:50

3 stops24h 45m

Seattle/Tacoma Intl

Wed 29/4

15:40-16:35

2 stops16h 55m

£582

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sun 22/3

07:00-10:25

3 stops34h 25m

Seattle/Tacoma Intl

Sun 29/3

19:00-22:20

2 stops19h 20m

£586

Flights are sorted by cheapest return flights first.

Deals found on 5/2

Showing 1-10 of 20 results
1
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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 return 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?

    Most people fly into Seattle/Tacoma Intl (SEA) if they book a flight to Seattle from London Luton. On average, Seattle/Tacoma Intl has 0 inbound flights from London Luton per day from 0 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from 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 holiday 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.

See more FAQs

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Federal Way
SeaTac

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Why should you use Cheapflights to find cheap flight tickets from Luton to Seattle?

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Yes! Cheapflights helps users easily find flights from Luton to Seattle with no change fees.

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Of course! You can now track prices for flights from Luton to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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