Find flights
When to book
FAQs

Cheap flights from London Luton Airport to Seattle from £385

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 19/9. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SEA
13 Sep — 20 Sep1
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 14 August 2026.

Mon 28/914:25 -
3 stops31h 20m
Tue 6/1015:55 -
2 stops22h 15m
Deal found 9/8£506
Thu 8/1020:35 -
2 stops27h 25m
Tue 20/1018:05 -
2 stops17h 50m
Deal found 10/8£548
Mon 21/918:05 -
3 stops47h 35m
Mon 28/919:00 -
2 stops19h 05m
Deal found 13/8£563
Fri 9/1018:20 -
2 stops26h 00m
Sat 17/1014:10 -
2 stops24h 45m
Deal found 10/8£583
Mon 5/1007:15 -
2 stops16h 55m
Wed 21/1017:40 -
2 stops18h 15m
Deal found 12/8£599
Wed 23/906:15 -
3 stops35h 25m
Fri 2/1015:40 -
2 stops16h 40m
Deal found 13/8£601
Sun 18/1018:10 -
2 stops30h 00m
Sat 24/1018:50 -
2 stops22h 05m
Deal found 13/8£602
Sat 24/1021:50 -
2 stops25h 05m
Fri 30/1015:35 -
3 stops23h 20m
Deal found 13/8£617
Mon 14/920:50 -
2 stops26h 50m
Mon 21/918:10 -
2 stops18h 05m
Deal found 13/8£619
Thu 24/917:30 -
2 stops30h 30m
Fri 2/1018:00 -
2 stops21h 50m
Deal found 9/8£624

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 14 August 2026.

Round-trip from

£506

One-way from

£385

Popular in

December

Cheapest in

February

Average price

£620
28/9-6/10
  • 28/9-6/10
  • 5 total stops
  • 53h 35m total
  • London to Seattle
Search Deals
19/9
  • 19/9
  • 2 total stops
  • 51h 15m total
  • London to Seattle
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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 14 August 2026.
Use the filters below to find and compare flights from London Luton Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Mon 21/9

18:05-09:40

3 stops47h 35m

Seattle/Tacoma Intl

Mon 28/9

19:00-22:05

2 stops19h 05m

£563

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Thu 24/9

17:30-16:00

2 stops30h 30m

Seattle/Tacoma Intl

Fri 2/10

18:00-23:50

2 stops21h 50m

£624

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Sat 24/10

20:35-14:55

2 stops26h 20m

Seattle/Tacoma Intl

Thu 29/10

18:50-22:15

2 stops20h 25m

£657

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Tue 1/9

09:40-21:00

2 stops19h 20m

Seattle/Tacoma Intl

Thu 10/9

15:40-23:25

2 stops23h 45m

£668

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Fri 4/9

06:20-18:45

2 stops20h 25m

Seattle/Tacoma Intl

Mon 21/9

19:00-22:05

2 stops19h 05m

£694

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Thu 29/10

06:00-18:00

1 stop19h 00m

Seattle/Tacoma Intl

Tue 3/11

14:35-17:40

2 stops19h 05m

£732

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Sun 30/8

09:00-09:40

2 stops32h 40m

Seattle/Tacoma Intl

Mon 31/8

19:00-22:05

2 stops19h 05m

£735

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Thu 22/10

07:40-17:55

2 stops18h 15m

Seattle/Tacoma Intl

Sat 31/10

15:35-19:35

2 stops21h 00m

£743

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Thu 10/9

05:40-16:00

2 stops18h 20m

Seattle/Tacoma Intl

Thu 17/9

18:05-00:50

2 stops22h 45m

£746

LondonSeattle

LTN London Luton - SEA Seattle/Tacoma Intl

LTNSEA

London Luton

Fri 23/10

06:05-17:55

2 stops19h 50m

Seattle/Tacoma Intl

Fri 30/10

15:35-20:25

2 stops21h 50m

£832

Flights are sorted by cheapest return flights first.

Deals found on 9/8

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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
Federal Way
SeaTac

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Luton to Seattle?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Luton to Seattle. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Luton to Seattle?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Seattle from Luton.

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.

Can Cheapflights notify me if prices for flights from Luton to Seattle become cheaper?

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.