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Cheap flights from London Luton Airport to Seattle from £379

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 24/9. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
31 Aug — 7 Sep1
1 adult

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 26 August 2025.

Round-trip from

£500

One-way from

£379

Popular in

August

Cheapest in

January

Average price

£697
9/10-16/10
  • 9/10-16/10
  • 4 total stops
  • 33h 55m total
  • London to Seattle
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24/9
  • 24/9
  • 3 total stops
  • 33h 15m 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).
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Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
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Average for round-trip flights in August 2025
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Find flight deals from Luton to Seattle

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 26 August 2025.

Mon 6/1009:00LTN - SEA
2 stops19h 40mMultiple Airlines
Mon 20/1015:45SEA - LTN
2 stops21h 40mMultiple Airlines
Deal found 23/8£478
Fri 7/1108:45LTN - SEA
2 stops16h 15mMultiple Airlines
Fri 14/1114:35SEA - LTN
2 stops23h 20mMultiple Airlines
Deal found 25/8£646
Wed 10/910:00LTN - SEA
3 stops20h 16mMultiple Airlines
Sun 14/919:35SEA - LTN
1 stop17h 55mMultiple Airlines
Deal found 25/8£662
Fri 26/911:30LTN - SEA
1 stop14h 20mMultiple Airlines
Sat 4/1019:35SEA - LTN
1 stop12h 30mMultiple Airlines
Deal found 24/8£664
Mon 29/911:35LTN - SEA
2 stops31h 00mMultiple Airlines
Mon 13/1008:40SEA - LTN
2 stops28h 45mMultiple Airlines
Deal found 23/8£685
Mon 17/1108:00LTN - SEA
1 stop17h 00mMultiple Airlines
Thu 20/1115:10SEA - LTN
2 stops15h 35mMultiple Airlines
Deal found 23/8£692
Tue 11/1107:00LTN - SEA
1 stop18h 00mMultiple Airlines
Thu 13/1115:10SEA - LTN
2 stops18h 05mMultiple Airlines
Deal found 23/8£693
Sun 16/1106:00LTN - SEA
1 stop19h 00mMultiple Airlines
Thu 20/1115:10SEA - LTN
2 stops18h 05mMultiple Airlines
Deal found 23/8£697
Wed 17/910:00LTN - SEA
2 stops18h 29mMultiple Airlines
Sun 28/919:35SEA - LTN
1 stop17h 55mMultiple Airlines
Deal found 23/8£702
Sat 6/921:25LTN - SEA
2 stops29h 56mMultiple Airlines
Sun 14/919:35SEA - LTN
1 stop15h 50mMultiple Airlines
Deal found 23/8£706
Mon 8/906:05LTN - SEA
2 stops22h 24mMultiple Airlines
Mon 22/907:15SEA - LTN
3 stops24h 45mMultiple Airlines
Deal found 25/8£711

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 26 August 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 6/10

09:00-20:40

2 stops19h 40m

Seattle/Tacoma Intl

Mon 20/10

15:45-21:25

2 stops21h 40m

£478

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Thu 9/10

08:45-17:50

2 stops17h 05m

Seattle/Tacoma Intl

Thu 16/10

15:45-16:35

2 stops16h 50m

£500

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 22/10

10:00-12:59

2 stops34h 59m

Seattle/Tacoma Intl

Thu 30/10

15:10-14:45

2 stops16h 35m

£544

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 7/11

08:45-17:00

2 stops16h 15m

Seattle/Tacoma Intl

Fri 14/11

14:35-21:55

2 stops23h 20m

£646

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 10/9

10:00-22:16

3 stops20h 16m

Seattle/Tacoma Intl

Sun 14/9

19:35-21:30

1 stop17h 55m

£662

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 26/9

11:30-17:50

1 stop14h 20m

Seattle/Tacoma Intl

Sat 4/10

19:35-16:05

1 stop12h 30m

£664

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 16/9

10:00-19:21

2 stops17h 21m

Seattle/Tacoma Intl

Mon 22/9

07:15-16:00

3 stops24h 45m

£674

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 29/9

11:35-10:35

2 stops31h 00m

Seattle/Tacoma Intl

Mon 13/10

08:40-21:25

2 stops28h 45m

£685

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 17/11

08:00-17:00

1 stop17h 00m

Seattle/Tacoma Intl

Thu 20/11

15:10-14:45

2 stops15h 35m

£692

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 11/11

07:00-17:00

1 stop18h 00m

Seattle/Tacoma Intl

Thu 13/11

15:10-17:15

2 stops18h 05m

£693

Flights are sorted by cheapest return flights first.

Deals found on 25/8

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.

  • What is the cheapest month to book a flight from London Luton Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from London Luton Airport to Seattle (average of £622). Flying from London Luton Airport to Seattle in July is currently the most expensive (average of £946). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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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