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Cheap flights from London Luton Airport to Seattle from £363

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 16/1. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
31 Jan — 7 Feb1
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 1 January 2026.

Wed 31/1208:30LTN - SEA
2 stops35h 40mMultiple Airlines
Wed 7/114:35SEA - LTN
3 stops18h 30mMultiple Airlines
Deal found 30/12£1,082
Wed 31/1208:30LTN - SEA
2 stops35h 40mMultiple Airlines
Thu 8/105:50SEA - LTN
3 stops24h 10mMultiple Airlines
Deal found 30/12£1,163
Wed 31/1208:30LTN - SEA
2 stops35h 40mMultiple Airlines
Tue 6/108:10SEA - LTN
2 stops17h 35mMultiple Airlines
Deal found 30/12£1,260

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 1 January 2026.

Round-trip from

£537

One-way from

£363

Popular in

July

Cheapest in

February

Average price

£482
17/1-24/1
  • 17/1-24/1
  • 5 total stops
  • 56h 11m total
  • London to Seattle
Search Deals
16/1
  • 16/1
  • 3 total stops
  • 35h 22m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£60 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 January 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 1 January 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 17/1

16:30-22:16

3 stops37h 46m

Seattle/Tacoma Intl

Sat 24/1

14:35-17:00

2 stops18h 25m

£537

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 28/4

08:05-20:28

2 stops20h 23m

Seattle/Tacoma Intl

Wed 13/5

18:55-15:25

1 stop12h 30m

£542

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 28/4

08:05-20:28

2 stops20h 23m

Seattle/Tacoma Intl

Mon 18/5

18:55-15:45

1 stop12h 50m

£551

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 16/1

09:00-19:17

2 stops42h 17m

Seattle/Tacoma Intl

Wed 8/7

18:55-15:25

1 stop12h 30m

£611

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 6/2

20:50-15:40

2 stops26h 50m

Seattle/Tacoma Intl

Tue 10/2

14:35-14:50

2 stops16h 15m

£646

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 14/1

08:00-17:00

1 stop17h 00m

Seattle/Tacoma Intl

Tue 7/7

17:40-07:35

2 stops29h 55m

£688

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 31/3

08:05-19:25

2 stops19h 20m

Seattle/Tacoma Intl

Sun 19/4

18:55-15:25

1 stop12h 30m

£693

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 20/1

07:00-17:00

1 stop18h 00m

Seattle/Tacoma Intl

Tue 7/7

17:40-07:35

2 stops29h 55m

£701

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sat 28/3

06:00-22:16

2 stops23h 16m

Seattle/Tacoma Intl

Sat 11/4

19:00-17:00

2 stops14h 00m

£716

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 22/6

10:35-17:10

1 stop14h 35m

Seattle/Tacoma Intl

Sun 5/7

18:55-21:40

1 stop18h 45m

£756

Flights are sorted by cheapest return flights first.

Deals found on 30/12

Showing 1-10 of 23 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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