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Cheap flights from London Luton Airport to Seattle from £419

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 21/1. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
25 Dec — 1 Jan1
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 25 November 2025.

Round-trip from

£560

One-way from

£424

Popular in

July

Cheapest in

February

Average price

£547
1/5-14/5
  • 1/5-14/5
  • 6 total stops
  • 57h 43m total
  • London to Seattle
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11/1
  • 11/1
  • 2 total stops
  • 44h 31m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£59 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 25 November 2025.

Mon 22/1206:00LTN - SEA
1 stop20h 20mMultiple Airlines
Sun 4/120:05SEA - LTN
1 stop17h 55mMultiple Airlines
Deal found 22/11£691
Fri 12/1205:50LTN - SEA
1 stop20h 30mMultiple Airlines
Fri 19/1220:05SEA - LTN
1 stop12h 10mMultiple Airlines
Deal found 22/11£758
Fri 5/1208:50LTN - SEA
2 stops16h 10mMultiple Airlines
Mon 8/1214:35SEA - LTN
2 stops17h 35mMultiple Airlines
Deal found 22/11£760
Mon 15/1206:00LTN - SEA
2 stops19h 00mMultiple Airlines
Wed 31/1214:35SEA - LTN
2 stops23h 20mMultiple Airlines
Deal found 23/11£789
Thu 27/1107:15LTN - SEA
2 stops16h 25mMultiple Airlines
Thu 4/1217:40SEA - LTN
2 stops15h 35mMultiple Airlines
Deal found 22/11£798
Wed 10/1208:00LTN - SEA
1 stop17h 00mMultiple Airlines
Mon 15/1221:38SEA - LTN
2 stops33h 12mMultiple Airlines
Deal found 24/11£814
Wed 10/1208:00LTN - SEA
1 stop17h 00mMultiple Airlines
Sun 4/120:05SEA - LTN
1 stop12h 40mMultiple Airlines
Deal found 24/11£824
Tue 9/1207:00LTN - SEA
1 stop18h 00mMultiple Airlines
Fri 12/1208:10SEA - LTN
3 stops28h 00mMultiple Airlines
Deal found 23/11£841
Sun 23/1113:10LTN - SEA
1 stop13h 10mMultiple Airlines
Sun 30/1120:05SEA - LTN
1 stop17h 55mMultiple Airlines
Deal found 22/11£853
Mon 15/1206:00LTN - SEA
2 stops19h 00mMultiple Airlines
Tue 6/105:50SEA - LTN
3 stops19h 55mMultiple Airlines
Deal found 22/11£853

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 25 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

Fri 23/1

17:50-12:10

2 stops26h 20m

Seattle/Tacoma Intl

Sat 7/2

14:00-20:25

2 stops22h 25m

£557

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 1/5

20:25-20:28

3 stops32h 03m

Seattle/Tacoma Intl

Thu 14/5

07:05-16:45

3 stops25h 40m

£560

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 22/12

06:00-18:20

1 stop20h 20m

Seattle/Tacoma Intl

Sun 4/1

20:05-22:00

1 stop17h 55m

£691

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 8/1

09:00-17:00

2 stops16h 00m

Seattle/Tacoma Intl

Thu 15/1

14:35-20:30

2 stops21h 55m

£731

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 10/4

06:05-17:50

1 stop19h 45m

Seattle/Tacoma Intl

Wed 15/4

18:45-22:55

2 stops20h 10m

£743

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 12/12

05:50-18:20

1 stop20h 30m

Seattle/Tacoma Intl

Fri 19/12

20:05-16:15

1 stop12h 10m

£758

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 10/12

08:00-17:00

1 stop17h 00m

Seattle/Tacoma Intl

Mon 5/1

14:35-16:10

2 stops17h 35m

£765

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 26/3

06:00-18:00

1 stop19h 00m

Seattle/Tacoma Intl

Sun 12/4

18:45-22:55

2 stops20h 10m

£788

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 15/1

06:00-17:00

1 stop19h 00m

Seattle/Tacoma Intl

Wed 28/1

15:10-20:05

2 stops20h 55m

£798

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 10/12

08:00-17:00

1 stop17h 00m

Seattle/Tacoma Intl

Sun 4/1

20:05-16:45

1 stop12h 40m

£824

Flights are sorted by cheapest return flights first.

Deals found on 22/11

Showing 1-10 of 22 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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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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