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Cheap flights from London Luton Airport to Seattle from £395

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 19/3. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
16 Jan — 23 Jan1
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 17 December 2025.

Wed 24/1220:50LTN - SEA
2 stops26h 50mMultiple Airlines
Wed 31/1214:35SEA - LTN
2 stops23h 20mMultiple Airlines
Deal found 15/12£773
Wed 24/1220:50LTN - SEA
2 stops26h 50mMultiple Airlines
Fri 9/115:10SEA - LTN
2 stops21h 00mMultiple Airlines
Deal found 16/12£792
Tue 16/1220:50LTN - SEA
2 stops28h 15mMultiple Airlines
Sat 31/109:55SEA - LTN
3 stops23h 00mMultiple Airlines
Deal found 16/12£1,021
Wed 24/1220:50LTN - SEA
2 stops26h 50mMultiple Airlines
Sat 3/114:00SEA - LTN
2 stops21h 25mMultiple Airlines
Deal found 16/12£1,047
Wed 24/1208:00LTN - SEA
1 stop17h 00mMultiple Airlines
Sun 4/120:05SEA - LTN
1 stop12h 40mMultiple Airlines
Deal found 16/12£1,071
Sun 21/1220:50LTN - SEA
2 stops26h 50mMultiple Airlines
Wed 31/1214:35SEA - LTN
2 stops17h 40mMultiple Airlines
Deal found 14/12£1,110

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 17 December 2025.

Round-trip from

£591

One-way from

£395

Popular in

July

Cheapest in

January

Average price

£636
9/2-23/2
  • 9/2-23/2
  • 5 total stops
  • 56h 40m total
  • London to Seattle
Search Deals
19/3
  • 19/3
  • 3 total stops
  • 29h 30m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£60 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 17 December 2025.
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

Mon 9/2

07:20-09:15

3 stops33h 55m

Seattle/Tacoma Intl

Mon 23/2

14:35-21:20

2 stops22h 45m

£591

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 29/1

09:00-17:00

2 stops16h 00m

Seattle/Tacoma Intl

Thu 5/2

14:35-20:30

2 stops21h 55m

£593

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 15/1

07:15-09:15

3 stops34h 00m

Seattle/Tacoma Intl

Thu 22/1

15:10-21:50

2 stops22h 40m

£606

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 2/3

07:20-22:51

3 stops23h 31m

Seattle/Tacoma Intl

Fri 13/3

16:10-20:10

2 stops21h 00m

£621

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 10/3

09:00-18:00

2 stops16h 00m

Seattle/Tacoma Intl

Tue 24/3

15:35-20:05

2 stops21h 30m

£667

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 14/1

08:00-17:00

1 stop17h 00m

Seattle/Tacoma Intl

Thu 1/10

11:06-17:40

2 stops22h 34m

£755

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 12/1

15:30-17:00

1 stop33h 30m

Seattle/Tacoma Intl

Sat 16/5

19:00-18:55

2 stops15h 55m

£790

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sat 10/1

18:30-14:20

2 stops51h 50m

£398

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 24/2

07:00-17:00

1 stop18h 00m

£405

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 18/3

08:00-18:00

1 stop17h 00m

£413

Flights are sorted by cheapest return flights first.

Deals found on 16/12

Showing 1-10 of 19 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
Leavenworth
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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