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Cheap flights from London Luton Airport to Seattle from £420

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 24/7. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
27 Jun — 4 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 28 May 2026.

Sat 6/609:00
LTN
-
SEA
1 stop16h 10m
Multiple Airlines
Sun 14/619:10
SEA
-
LTN
1 stop12h 15m
Multiple Airlines
Deal found 27/5£559
Sun 21/618:10
LTN
-
SEA
3 stops47h 30m
Multiple Airlines
Wed 8/715:40
SEA
-
LTN
2 stops22h 45m
Multiple Airlines
Deal found 27/5£609
Fri 19/606:20
LTN
-
SEA
3 stops35h 20m
Multiple Airlines
Sat 11/715:40
SEA
-
LTN
2 stops23h 20m
Multiple Airlines
Deal found 27/5£616
Tue 1/905:40
LTN
-
SEA
3 stops23h 27m
Multiple Airlines
Tue 22/914:10
SEA
-
LTN
2 stops24h 30m
Multiple Airlines
Deal found 25/5£623
Tue 15/920:35
LTN
-
SEA
2 stops27h 05m
Multiple Airlines
Tue 29/918:05
SEA
-
LTN
2 stops17h 50m
Multiple Airlines
Deal found 25/5£633
Tue 23/609:40
LTN
-
SEA
1 stop15h 30m
Multiple Airlines
Tue 30/619:10
SEA
-
LTN
1 stop19h 00m
Multiple Airlines
Deal found 24/5£641
Tue 9/609:40
LTN
-
SEA
3 stops41h 05m
Multiple Airlines
Mon 14/919:00
SEA
-
LTN
2 stops19h 05m
Multiple Airlines
Deal found 23/5£642
Sun 21/609:00
LTN
-
SEA
1 stop16h 10m
Multiple Airlines
Sun 28/619:10
SEA
-
LTN
1 stop18h 30m
Multiple Airlines
Deal found 24/5£645
Thu 11/607:55
LTN
-
SEA
2 stops33h 45m
Multiple Airlines
Thu 9/715:40
SEA
-
LTN
2 stops23h 05m
Multiple Airlines
Deal found 25/5£648
Tue 2/609:40
LTN
-
SEA
1 stop15h 30m
Multiple Airlines
Thu 11/619:10
SEA
-
LTN
1 stop20h 15m
Multiple Airlines
Deal found 23/5£651
Fri 5/606:20
LTN
-
SEA
1 stop18h 50m
Multiple Airlines
Sun 14/619:10
SEA
-
LTN
1 stop18h 30m
Multiple Airlines
Deal found 27/5£652
Thu 11/609:25
LTN
-
SEA
1 stop15h 45m
Multiple Airlines
Tue 23/619:10
SEA
-
LTN
1 stop12h 20m
Multiple Airlines
Deal found 25/5£655

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 28 May 2026.

Round-trip from

£559

One-way from

£420

Popular in

July

Cheapest in

February

Average price

£555
6/6-14/6
  • 6/6-14/6
  • 2 total stops
  • 28h 25m total
  • London to Seattle
Search Deals
24/7
  • 24/7
  • 3 total stops
  • 36h 00m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£50 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 May 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 28 May 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

Sun 21/6

18:10-09:40

3 stops47h 30m

Seattle/Tacoma Intl

Wed 8/7

15:40-22:25

2 stops22h 45m

£609
Fastest return journey

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 10/6

06:15-17:10

1 stop18h 55m

Seattle/Tacoma Intl

Tue 23/6

19:10-15:30

1 stop12h 20m

£656

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 11/6

07:55-09:40

2 stops33h 45m

Seattle/Tacoma Intl

Sun 14/6

13:30-20:30

3 stops23h 00m

£686

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 11/6

07:00-16:00

2 stops17h 00m

Seattle/Tacoma Intl

Wed 24/6

17:40-19:55

2 stops18h 15m

£703

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 18/8

07:55-10:07

3 stops34h 12m

Seattle/Tacoma Intl

Tue 25/8

19:00-18:30

2 stops15h 30m

£766

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 24/6

06:10-20:40

2 stops22h 30m

Seattle/Tacoma Intl

Wed 1/7

15:40-22:35

2 stops22h 55m

£777

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 10/6

06:10-22:40

3 stops24h 30m

Seattle/Tacoma Intl

Sat 13/6

05:45-10:30

2 stops20h 45m

£786

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 16/7

07:05-18:45

2 stops19h 40m

Seattle/Tacoma Intl

Tue 28/7

19:00-18:30

2 stops15h 30m

£795

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 26/6

05:40-09:40

3 stops36h 00m

Seattle/Tacoma Intl

Tue 4/8

15:40-15:30

2 stops15h 50m

£798

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 10/8

08:50-22:48

3 stops21h 58m

Seattle/Tacoma Intl

Mon 24/8

19:00-20:55

2 stops17h 55m

£801

Flights are sorted by cheapest return flights first.

Deals found on 25/5

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

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