When did momondo last update prices for flights from London Luton Airport to Seattle/Tacoma Intl Airport?

Prices for flights from London Luton Airport to Seattle/Tacoma Intl Airport refresh daily.

How old do you have to be to fly from London Luton Airport to Seattle/Tacoma Intl Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Luton Airport to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$551 Cheap Flights from London Luton Airport to Seattle in 2026

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Find the cheapest flights from London Luton Airport to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:40 am - 5:10 pm

LTN

SEA

15h 30m

1 stop

7:10 pm - 9:40 pm

SEA

LTN

18h 30m

1 stop

$728Multiple Airlines

Tue, Jun 9 - Sun, Jun 21

8:15 am - 5:10 pm

LTN

SEA

16h 55m

1 stop

7:10 pm - 3:25 pm

SEA

LTN

12h 15m

1 stop

$752Multiple Airlines

Mon, Jun 8 - Wed, Jun 24

8:35 pm - 3:40 pm

LTN

SEA

27h 05m

2 stops

6:05 pm - 7:55 pm

SEA

LTN

17h 50m

2 stops

$753Multiple Airlines

Tue, Sep 8 - Tue, Sep 15

6:20 am - 5:10 pm

LTN

SEA

18h 50m

1 stop

7:10 pm - 9:55 pm

SEA

LTN

18h 45m

1 stop

$788Multiple Airlines

Fri, Jun 19 - Sat, Jun 27

5:45 pm - 3:40 pm

LTN

SEA

29h 55m

2 stops

6:05 pm - 12:50 am

SEA

LTN

22h 45m

2 stops

$794Multiple Airlines

Tue, Sep 1 - Thu, Sep 10

6:15 am - 5:10 pm

LTN

SEA

18h 55m

1 stop

7:10 pm - 4:45 pm

SEA

LTN

13h 35m

1 stop

$796Multiple Airlines

Wed, Jun 10 - Thu, Jun 25

9:15 am - 10:40 pm

LTN

SEA

21h 25m

3 stops

5:45 am - 10:55 pm

SEA

LTN

33h 10m

3 stops

$831Multiple Airlines

Tue, Jun 2 - Sun, Jun 7

9:15 am - 9:40 am

LTN

SEA

32h 25m

2 stops

5:45 am - 10:55 pm

SEA

LTN

33h 10m

3 stops

$839Multiple Airlines

Tue, Jun 2 - Sun, Jun 7

6:20 am - 9:40 am

LTN

SEA

35h 20m

3 stops

7:00 pm - 10:10 pm

SEA

LTN

19h 10m

2 stops

$846Multiple Airlines

Fri, Jun 19 - Thu, Oct 1

9:00 am - 9:40 am

LTN

SEA

32h 40m

3 stops

7:00 am - 10:50 pm

SEA

LTN

31h 50m

3 stops

$854Multiple Airlines

Sun, Jun 21 - Tue, Jun 30

momondo Fare Finder

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 round-trip

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 6/9

9:40 am-5:10 pm

1 stop15h 30m

Seattle/Tacoma Intl

Sun 6/21

7:10 pm-9:40 pm

1 stop18h 30m

$728

Quickest round-trip

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Mon 6/8

8:15 am-5:10 pm

1 stop16h 55m

Seattle/Tacoma Intl

Wed 6/24

7:10 pm-3:25 pm

1 stop12h 15m

$752

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 9/8

8:35 pm-3:40 pm

2 stops27h 05m

Seattle/Tacoma Intl

Tue 9/15

6:05 pm-7:55 pm

2 stops17h 50m

$753

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 6/19

6:20 am-5:10 pm

1 stop18h 50m

Seattle/Tacoma Intl

Sat 6/27

7:10 pm-9:55 pm

1 stop18h 45m

$788

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 9/1

5:45 pm-3:40 pm

2 stops29h 55m

Seattle/Tacoma Intl

Thu 9/10

6:05 pm-12:50 am

2 stops22h 45m

$794

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 6/10

6:15 am-5:10 pm

1 stop18h 55m

Seattle/Tacoma Intl

Thu 6/25

7:10 pm-4:45 pm

1 stop13h 35m

$796

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 6/2

9:15 am-10:40 pm

3 stops21h 25m

Seattle/Tacoma Intl

Sun 6/7

5:45 am-10:55 pm

3 stops33h 10m

$831

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Tue 6/2

9:15 am-9:40 am

2 stops32h 25m

Seattle/Tacoma Intl

Sun 6/7

5:45 am-10:55 pm

3 stops33h 10m

$839

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 6/19

6:20 am-9:40 am

3 stops35h 20m

Seattle/Tacoma Intl

Thu 10/1

7:00 pm-10:10 pm

2 stops19h 10m

$846

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Sun 6/21

9:00 am-9:40 am

3 stops32h 40m

Seattle/Tacoma Intl

Tue 6/30

7:00 am-10:50 pm

3 stops31h 50m

$854

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London Luton Airport to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from London Luton Airport is on a Monday. momondo users have found tickets for Monday departures for as low as $812. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from London Luton Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $947.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from London Luton Airport at noon is the least expensive time of day to depart. momondo users have found prices as low as $854 when looking at flights departing at noon. Flights to Seattle are more costly in the morning, with an average ticket price of $904. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from London Luton Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from London Luton Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap London Luton Airport to Seattle (LTN to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Luton Airport to Seattle

Fastest flight time	14h 10m
Direct flights	None

The fastest flight from London Luton Airport to Seattle takes 14h 10m

There are no direct flights from London Luton Airport to Seattle. There are no popular flight routes from London Luton Airport to Seattle.

Search flight deals

Frequently asked questions about flying from London Luton Airport to Seattle

How far is London Luton to Seattle/Tacoma Intl by plane?
The straight-line distance from London Luton to Seattle/Tacoma Intl is 4754.4 mi. 14h 10m is a normal flight duration for this route.
When did momondo last update prices for flights from London Luton Airport to Seattle/Tacoma Intl Airport?
Prices for flights from London Luton Airport to Seattle/Tacoma Intl Airport refresh daily.
How old do you have to be to fly from London Luton Airport to Seattle/Tacoma Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Luton Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Redmond

Kent

Tukwila

Puyallup

Marysville

Lakewood

Cle Elum

Federal Way

Centralia

Fife

Westport

Shoreline

Tumwater

Why use momondo?

Why should I use momondo to find a flight deal from London to Seattle?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Seattle. momondo saves you time and could save you money on your trip.

Can I find flights from London to Seattle with flexible booking policies on momondo?

momondo does allow users to show only those flights to Seattle from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Seattle?

momondo helps you find the best flight between London and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from London to Seattle right now. Can momondo alert me if prices change?

Price alerts on flights to Seattle from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.