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Cheap flights from London Luton Airport to Seattle from £327

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 29/4. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
28 Apr — 5 May1
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 29 March 2026.

Wed 15/406:15
LTN
-
SEA
1 stop18h 55m
Multiple Airlines
Wed 22/419:10
SEA
-
LTN
1 stop12h 15m
Multiple Airlines
Deal found 26/3£513
Mon 11/508:15
LTN
-
SEA
1 stop16h 55m
Multiple Airlines
Mon 18/519:10
SEA
-
LTN
1 stop12h 35m
Multiple Airlines
Deal found 27/3£515
Tue 12/509:40
LTN
-
SEA
1 stop15h 30m
Multiple Airlines
Tue 19/519:10
SEA
-
LTN
1 stop12h 20m
Multiple Airlines
Deal found 28/3£519
Mon 13/407:15
LTN
-
SEA
2 stops16h 55m
Multiple Airlines
Mon 27/418:10
SEA
-
LTN
2 stops16h 15m
Multiple Airlines
Deal found 28/3£539
Fri 1/506:20
LTN
-
SEA
1 stop18h 50m
Multiple Airlines
Tue 5/519:10
SEA
-
LTN
1 stop19h 00m
Multiple Airlines
Deal found 28/3£550
Mon 13/407:15
LTN
-
SEA
2 stops16h 55m
Multiple Airlines
Sun 26/417:40
SEA
-
LTN
2 stops16h 45m
Multiple Airlines
Deal found 28/3£555
Tue 5/509:40
LTN
-
SEA
3 stops40h 50m
Multiple Airlines
Mon 18/519:00
SEA
-
LTN
2 stops19h 05m
Multiple Airlines
Deal found 26/3£570
Wed 17/606:15
LTN
-
SEA
1 stop18h 55m
Multiple Airlines
Wed 24/619:10
SEA
-
LTN
1 stop12h 15m
Multiple Airlines
Deal found 26/3£577

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 29 March 2026.

Round-trip from

£513

One-way from

£327

Popular in

July

Cheapest in

February

Average price

£544
15/4-22/4
  • 15/4-22/4
  • 2 total stops
  • 31h 10m total
  • London to Seattle
Search Deals
29/4
  • 29/4
  • 2 total stops
  • 47h 16m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£57 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 March 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 29 March 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

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 13/4

07:15-16:10

2 stops16h 55m

Seattle/Tacoma Intl

Mon 27/4

18:10-18:25

2 stops16h 15m

£539

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 13/4

07:15-16:10

2 stops16h 55m

Seattle/Tacoma Intl

Sun 26/4

17:40-18:25

2 stops16h 45m

£555

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 8/4

06:15-17:10

1 stop18h 55m

Seattle/Tacoma Intl

Wed 15/4

19:10-15:25

1 stop12h 15m

£644

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 1/5

06:20-17:10

1 stop18h 50m

Seattle/Tacoma Intl

Fri 15/5

19:10-17:25

1 stop14h 15m

£679

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 22/4

10:00-21:53

3 stops43h 53m

Seattle/Tacoma Intl

Fri 29/5

15:40-01:55

3 stops26h 15m

£693

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 29/5

20:35-13:45

2 stops25h 10m

Seattle/Tacoma Intl

Sun 7/6

15:55-19:55

2 stops20h 00m

£697
Fastest return journey

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 28/7

09:40-18:45

2 stops17h 05m

Seattle/Tacoma Intl

Tue 11/8

19:10-15:30

1 stop12h 20m

£716

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 13/5

06:15-17:55

1 stop19h 40m

Seattle/Tacoma Intl

Mon 18/5

19:00-22:05

2 stops19h 05m

£717

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sat 15/8

08:40-21:00

2 stops20h 20m

Seattle/Tacoma Intl

Tue 15/9

19:10-15:30

1 stop12h 20m

£735

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 9/6

09:40-21:08

2 stops19h 28m

Seattle/Tacoma Intl

Fri 12/6

10:30-17:25

3 stops22h 55m

£736

Flights are sorted by cheapest return flights first.

Deals found on 28/3

Showing 1-10 of 22 resultsSorted by cheapest first
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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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Can Cheapflights find flights from Luton to Seattle with no change fees?

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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