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Cheap flights from London Luton Airport to Seattle from £426

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 17/8. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
9 Jul — 16 Jul1
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 9 June 2026.

Fri 2/1017:10
LTN
-
SEA
3 stops28h 35m
Multiple Airlines
Sun 11/1015:55
SEA
-
LTN
3 stops21h 45m
Multiple Airlines
Deal found 8/6£593
Tue 23/609:40
LTN
-
SEA
2 stops32h 00m
Multiple Airlines
Thu 2/708:00
SEA
-
LTN
3 stops30h 45m
Multiple Airlines
Deal found 4/6£618
Sat 22/818:10
LTN
-
SEA
3 stops47h 30m
Multiple Airlines
Sat 29/819:00
SEA
-
LTN
2 stops14h 00m
Multiple Airlines
Deal found 5/6£645
Tue 7/709:40
LTN
-
SEA
2 stops17h 05m
Multiple Airlines
Tue 14/715:40
SEA
-
LTN
2 stops18h 45m
Multiple Airlines
Deal found 7/6£646
Tue 18/809:40
LTN
-
SEA
3 stops32h 00m
Multiple Airlines
Mon 31/819:00
SEA
-
LTN
2 stops14h 10m
Multiple Airlines
Deal found 4/6£648
Sat 22/818:10
LTN
-
SEA
3 stops47h 30m
Multiple Airlines
Sun 30/819:00
SEA
-
LTN
2 stops19h 20m
Multiple Airlines
Deal found 5/6£651
Mon 13/718:05
LTN
-
SEA
2 stops29h 35m
Multiple Airlines
Sun 26/717:40
SEA
-
LTN
2 stops21h 40m
Multiple Airlines
Deal found 6/6£651
Wed 1/706:15
LTN
-
SEA
3 stops35h 25m
Multiple Airlines
Wed 15/715:40
SEA
-
LTN
2 stops22h 45m
Multiple Airlines
Deal found 6/6£657
Tue 25/809:40
LTN
-
SEA
2 stops32h 00m
Multiple Airlines
Mon 31/815:40
SEA
-
LTN
2 stops23h 10m
Multiple Airlines
Deal found 5/6£662

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 9 June 2026.

Round-trip from

£593

One-way from

£426

Popular in

July

Cheapest in

February

Average price

£627
2/10-11/10
  • 2/10-11/10
  • 6 total stops
  • 50h 20m total
  • London to Seattle
Search Deals
17/8
  • 17/8
  • 3 total stops
  • 27h 20m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£56 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 9 June 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

Fri 2/10

06:20-17:55

2 stops19h 35m

Seattle/Tacoma Intl

Sun 11/10

15:40-21:40

2 stops22h 00m

£610

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 1/7

06:15-09:40

3 stops35h 25m

Seattle/Tacoma Intl

Wed 15/7

08:00-22:25

3 stops30h 25m

£672

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 26/6

05:40-16:00

2 stops18h 20m

Seattle/Tacoma Intl

Thu 9/7

18:05-00:50

2 stops22h 45m

£747

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 23/7

07:30-18:45

3 stops43h 15m

Seattle/Tacoma Intl

Thu 13/8

19:00-23:10

2 stops20h 10m

£785

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 17/7

06:20-18:45

2 stops20h 25m

Seattle/Tacoma Intl

Sun 26/7

19:00-22:55

2 stops19h 55m

£797

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 23/6

09:40-09:40

2 stops32h 00m

Seattle/Tacoma Intl

Thu 2/7

18:50-23:05

2 stops20h 15m

£833

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sat 4/7

07:00-21:00

2 stops22h 00m

Seattle/Tacoma Intl

Sun 12/7

19:00-22:55

2 stops19h 55m

£884
Fastest return journey

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sun 13/9

06:25-11:45

1 stop13h 20m

Seattle/Tacoma Intl

Mon 21/9

19:00-17:10

2 stops14h 10m

£893

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 22/7

06:15-17:10

1 stop18h 55m

Seattle/Tacoma Intl

Wed 29/7

19:10-15:25

1 stop12h 15m

£911
Cheapest one-way

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sat 5/9

21:25-21:00

2 stops31h 35m

£430

Flights are sorted by cheapest return flights first.

Deals found on 7/6

Showing 1-10 of 19 resultsSorted by cheapest first
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?

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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