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Cheap flights from London Luton Airport to Seattle from £313

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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
25 Mar — 1 Apr1
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 23 February 2026.

Sat 7/306:00
LTN
-
SEA
2 stops19h 00m
Multiple Airlines
Tue 10/315:35
SEA
-
LTN
2 stops21h 30m
Multiple Airlines
Deal found 21/2£432
Tue 7/409:40
LTN
-
SEA
2 stops16h 15m
Multiple Airlines
Tue 14/415:40
SEA
-
LTN
2 stops22h 30m
Multiple Airlines
Deal found 21/2£446
Wed 8/406:15
LTN
-
SEA
2 stops22h 25m
Multiple Airlines
Wed 15/415:40
SEA
-
LTN
2 stops21h 35m
Multiple Airlines
Deal found 22/2£447
Sat 9/521:25
LTN
-
SEA
2 stops22h 55m
Multiple Airlines
Sun 17/505:40
SEA
-
LTN
3 stops21h 45m
Multiple Airlines
Deal found 20/2£507
Wed 1/406:15
LTN
-
SEA
2 stops18h 44m
Multiple Airlines
Wed 8/414:10
SEA
-
LTN
2 stops23h 05m
Multiple Airlines
Deal found 22/2£527
Thu 9/409:25
LTN
-
SEA
2 stops19h 15m
Multiple Airlines
Thu 16/415:40
SEA
-
LTN
2 stops17h 05m
Multiple Airlines
Deal found 23/2£544
Fri 15/505:40
LTN
-
SEA
2 stops18h 20m
Multiple Airlines
Sun 24/517:40
SEA
-
LTN
2 stops21h 40m
Multiple Airlines
Deal found 22/2£552
Mon 13/409:15
LTN
-
SEA
3 stops21h 35m
Multiple Airlines
Mon 27/419:00
SEA
-
LTN
2 stops14h 10m
Multiple Airlines
Deal found 23/2£555
Sun 1/308:05
LTN
-
SEA
1 stop18h 15m
Multiple Airlines
Sun 15/321:05
SEA
-
LTN
1 stop12h 40m
Multiple Airlines
Deal found 22/2£579

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 23 February 2026.

Round-trip from

£432

One-way from

£313

Popular in

July

Cheapest in

February

Average price

£482
7/3-10/3
  • 7/3-10/3
  • 4 total stops
  • 40h 30m total
  • London to Seattle
Search Deals
6/5
  • 6/5
  • 3 total stops
  • 29h 23m 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 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 23 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

Sat 7/3

06:00-17:00

2 stops19h 00m

Seattle/Tacoma Intl

Tue 10/3

15:35-20:05

2 stops21h 30m

£432

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 18/3

08:00-18:00

1 stop17h 00m

Seattle/Tacoma Intl

Mon 6/4

19:00-22:05

2 stops19h 05m

£703

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 13/4

13:50-20:40

1 stop14h 50m

Seattle/Tacoma Intl

Tue 28/4

19:00-22:55

2 stops19h 55m

£733

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 12/8

06:15-09:40

3 stops35h 25m

Seattle/Tacoma Intl

Wed 19/8

05:40-13:45

3 stops24h 05m

£759

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 12/5

09:30-20:40

2 stops19h 10m

Seattle/Tacoma Intl

Fri 22/5

15:40-22:05

2 stops22h 25m

£771

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 23/3

08:00-18:00

1 stop17h 00m

Seattle/Tacoma Intl

Mon 30/3

19:00-17:10

2 stops14h 10m

£798

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sat 13/6

11:00-17:10

1 stop14h 10m

Seattle/Tacoma Intl

Sun 21/6

19:10-15:25

1 stop12h 15m

£811

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 15/7

06:15-11:45

1 stop13h 30m

Seattle/Tacoma Intl

Thu 30/7

18:50-07:45

2 stops28h 55m

£899

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 30/7

09:25-17:55

2 stops16h 30m

Seattle/Tacoma Intl

Fri 14/8

19:10-17:25

1 stop14h 15m

£903

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 23/7

09:25-17:55

2 stops16h 30m

Seattle/Tacoma Intl

Sun 26/7

19:10-15:25

1 stop12h 15m

£928

Flights are sorted by cheapest return flights first.

Deals found on 19/2

Showing 1-10 of 20 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 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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How does Cheapflights help users find flights from Luton to Seattle?

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Seattle from Luton.

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.

Can Cheapflights notify me if prices for flights from Luton to Seattle become cheaper?

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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