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Cheap flights from London Luton Airport to Seattle from £399

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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
20 nov. — 27 nov.1
1 adult
1 adult, Economy

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 21 octobre 2025.

Round-trip from

£560

One-way from

£399

Popular in

July

Cheapest in

January

Average price

£541
23/11-30/11
  • 23/11-30/11
  • 2 total stops
  • 25h 50m total
  • London to Seattle
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9/1
  • 9/1
  • 3 total stops
  • 27h 15m 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 (£9 potential savings vs. average return price).
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Average for round-trip flights in October 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 21 octobre 2025.

mer. 10/1208:15LTN - SEA
2 stops16h 45mMultiple Airlines
lun. 15/1214:35SEA - LTN
2 stops21h 25mMultiple Airlines
Deal found 20/10£587
mer. 12/1108:00LTN - SEA
1 stop17h 00mMultiple Airlines
jeu. 4/1215:10SEA - LTN
2 stops18h 05mMultiple Airlines
Deal found 20/10£628
dim. 16/1121:45LTN - SEA
2 stops25h 55mMultiple Airlines
ven. 21/1111:55SEA - LTN
3 stops26h 00mMultiple Airlines
Deal found 20/10£731
ven. 12/1209:00LTN - SEA
3 stops45h 16mMultiple Airlines
ven. 26/1210:05SEA - LTN
3 stops26h 05mMultiple Airlines
Deal found 19/10£732
ven. 31/1005:50LTN - SEA
1 stop20h 30mMultiple Airlines
dim. 2/1107:00SEA - LTN
2 stops17h 55mMultiple Airlines
Deal found 19/10£744
sam. 25/1022:10LTN - SEA
1 stop29h 10mMultiple Airlines
dim. 2/1107:00SEA - LTN
2 stops17h 55mMultiple Airlines
Deal found 19/10£755
sam. 25/1022:10LTN - SEA
1 stop29h 10mMultiple Airlines
mar. 4/1107:00SEA - LTN
2 stops18h 45mMultiple Airlines
Deal found 19/10£760
dim. 26/1013:10LTN - SEA
1 stop13h 10mMultiple Airlines
dim. 2/1107:00SEA - LTN
2 stops17h 55mMultiple Airlines
Deal found 19/10£764
dim. 26/1013:10LTN - SEA
1 stop13h 10mMultiple Airlines
mar. 4/1107:00SEA - LTN
2 stops18h 45mMultiple Airlines
Deal found 19/10£770

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 21 octobre 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

mar. 2/12

07:10-09:31

3 stops34h 21m

Seattle/Tacoma Intl

mar. 9/12

15:10-17:50

2 stops18h 40m

£584

LondonSeattle

LTN - SEA

LTNSEA

London Luton

mer. 12/11

08:00-17:00

1 stop17h 00m

Seattle/Tacoma Intl

jeu. 4/12

15:10-17:15

2 stops18h 05m

£628

LondonSeattle

LTN - SEA

LTNSEA

London Luton

ven. 12/12

07:00-09:31

3 stops34h 31m

Seattle/Tacoma Intl

ven. 26/12

10:05-20:10

3 stops26h 05m

£718

LondonSeattle

LTN - SEA

LTNSEA

London Luton

dim. 16/11

21:45-15:40

2 stops25h 55m

Seattle/Tacoma Intl

ven. 21/11

11:55-21:55

3 stops26h 00m

£731

LondonSeattle

LTN - SEA

LTNSEA

London Luton

dim. 1/3

06:00-17:00

1 stop19h 00m

Seattle/Tacoma Intl

dim. 8/3

23:00-14:00

2 stops32h 00m

£817

LondonSeattle

LTN - SEA

LTNSEA

London Luton

mar. 25/11

07:00-17:00

1 stop18h 00m

Seattle/Tacoma Intl

mar. 16/12

05:50-09:45

3 stops19h 55m

£820

LondonSeattle

LTN - SEA

LTNSEA

London Luton

mar. 25/11

20:50-17:00

3 stops28h 10m

£405

LondonSeattle

LTN - SEA

LTNSEA

London Luton

mer. 19/11

08:00-17:00

1 stop17h 00m

£414

LondonSeattle

LTN - SEA

LTNSEA

London Luton

mar. 2/12

18:55-17:00

3 stops30h 05m

£414

LondonSeattle

LTN - SEA

LTNSEA

London Luton

dim. 16/11

21:55-10:25

3 stops44h 30m

£417

Flights are sorted by cheapest return flights first.

Deals found on 19/10

Showing 1-10 of 14 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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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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