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Cheap flights from London Luton Airport to Seattle from £417

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 23/2. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap 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 14 November 2025.

Round-trip from

£587

One-way from

£417

Popular in

July

Cheapest in

January

Average price

£544
31/3-9/4
  • 31/3-9/4
  • 5 total stops
  • 57h 34m total
  • London to Seattle
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23/2
  • 23/2
  • 1 total stop
  • 33h 30m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£58 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
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Average for round-trip flights in November 2025
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Find 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 14 November 2025.

Wed 19/1120:50LTN - SEA
2 stops26h 50mMultiple Airlines
Wed 31/1214:35SEA - LTN
2 stops23h 20mMultiple Airlines
Deal found 13/11£667
Sat 13/1207:20LTN - SEA
3 stops46h 56mMultiple Airlines
Mon 5/114:35SEA - LTN
2 stops17h 35mMultiple Airlines
Deal found 12/11£676
Tue 23/1220:50LTN - SEA
2 stops26h 50mMultiple Airlines
Mon 29/1217:40SEA - LTN
2 stops20h 50mMultiple Airlines
Deal found 12/11£695
Tue 16/1217:20LTN - SEA
3 stops28h 00mMultiple Airlines
Tue 6/114:00SEA - LTN
2 stops23h 00mMultiple Airlines
Deal found 12/11£705
Mon 24/1107:30LTN - SEA
2 stops16h 10mMultiple Airlines
Wed 26/1110:05SEA - LTN
3 stops27h 45mMultiple Airlines
Deal found 13/11£740
Sun 16/1121:45LTN - SEA
2 stops25h 55mMultiple Airlines
Fri 5/1210:05SEA - LTN
3 stops26h 05mMultiple Airlines
Deal found 12/11£758
Tue 18/1109:00LTN - SEA
2 stops16h 00mMultiple Airlines
Wed 31/1214:35SEA - LTN
2 stops23h 20mMultiple Airlines
Deal found 12/11£784
Sun 16/1121:45LTN - SEA
2 stops25h 55mMultiple Airlines
Sun 23/1105:50SEA - LTN
3 stops24h 45mMultiple Airlines
Deal found 13/11£785
Sat 6/1209:00LTN - SEA
2 stops16h 00mMultiple Airlines
Tue 6/115:10SEA - LTN
2 stops18h 40mMultiple Airlines
Deal found 13/11£791
Thu 27/1106:00LTN - SEA
1 stop19h 00mMultiple Airlines
Sat 29/1105:50SEA - LTN
3 stops24h 10mMultiple Airlines
Deal found 12/11£810

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 14 November 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

Sat 13/12

07:20-22:16

3 stops46h 56m

Seattle/Tacoma Intl

Mon 5/1

14:35-16:10

2 stops17h 35m

£676

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 23/12

20:50-15:40

2 stops26h 50m

Seattle/Tacoma Intl

Mon 29/12

17:40-22:30

2 stops20h 50m

£695

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 16/12

17:20-13:20

3 stops28h 00m

Seattle/Tacoma Intl

Tue 6/1

14:00-21:00

2 stops23h 00m

£705

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 15/1

06:00-17:00

1 stop19h 00m

Seattle/Tacoma Intl

Thu 22/1

14:35-14:05

2 stops15h 30m

£749

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sun 26/4

06:50-17:50

1 stop19h 00m

Seattle/Tacoma Intl

Sun 17/5

18:45-22:55

2 stops20h 10m

£782

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sat 6/12

09:00-17:00

2 stops16h 00m

Seattle/Tacoma Intl

Tue 6/1

15:10-17:50

2 stops18h 40m

£791

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 16/12

09:00-17:00

2 stops16h 00m

Seattle/Tacoma Intl

Mon 5/1

14:35-16:10

2 stops17h 35m

£840

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sat 6/12

16:30-22:16

3 stops37h 46m

Seattle/Tacoma Intl

Fri 12/12

20:05-16:15

1 stop12h 10m

£851

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 4/12

06:00-17:00

1 stop19h 00m

Seattle/Tacoma Intl

Fri 12/12

20:05-20:10

1 stop16h 05m

£851

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 23/2

15:30-17:00

1 stop33h 30m

£417

Flights are sorted by cheapest return flights first.

Deals found on 11/11

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
Bothell
SeaTac

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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.

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