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Cheap flights from Seattle to London from C$ 526

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to London departing on 21/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Cheap round-trip flights

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Icelandair Logo
2:35 p.m. - 10:55 a.m.
SEA
-
LGW
12h 20m
1 stop
Icelandair Logo
11:55 a.m. - 6:00 p.m.
LGW
-
SEA
13h 05m
1 stop
C$ 746Icelandair
śr., 25 lut - pon., 16 mar
Icelandair Logo
7:00 p.m. - 2:40 p.m.
SEA
-
LGW
11h 40m
1 stop
Icelandair Logo
1:00 p.m. - 5:55 p.m.
LGW
-
SEA
12h 55m
1 stop
C$ 777Icelandair
śr., 15 kwi - wt., 28 kwi
Icelandair Logo
7:00 p.m. - 2:40 p.m.
SEA
-
LGW
11h 40m
1 stop
Icelandair Logo
3:40 p.m. - 8:40 p.m.
LGW
-
SEA
13h 00m
1 stop
C$ 780Icelandair
pon., 13 kwi - pt., 24 kwi
Icelandair Logo
7:00 p.m. - 2:40 p.m.
SEA
-
LGW
11h 40m
1 stop
Icelandair Logo
3:40 p.m. - 8:40 p.m.
LGW
-
SEA
13h 00m
1 stop
C$ 788Icelandair
ndz., 26 kwi - pt., 8 maj
Icelandair Logo
7:00 p.m. - 2:40 p.m.
SEA
-
LGW
11h 40m
1 stop
Icelandair Logo
3:40 p.m. - 8:40 p.m.
LGW
-
SEA
13h 00m
1 stop
C$ 791Icelandair
ndz., 26 kwi - sob., 9 maj
Multiple Airlines Logo
3:00 p.m. - 7:30 p.m.
SEA
-
LGW
21h 30m
2 stops
Multiple Airlines Logo
9:40 p.m. - 1:10 p.m.
LGW
-
SEA
22h 30m
2 stops
C$ 792Multiple Airlines
wt., 10 mar - śr., 18 mar
Icelandair Logo
7:00 p.m. - 2:40 p.m.
SEA
-
LGW
11h 40m
1 stop
Icelandair Logo
3:40 p.m. - 8:40 p.m.
LGW
-
SEA
13h 00m
1 stop
C$ 799Icelandair
sob., 2 maj - śr., 13 maj
Icelandair Logo
7:00 p.m. - 2:40 p.m.
SEA
-
LGW
11h 40m
1 stop
Icelandair Logo
3:40 p.m. - 8:40 p.m.
LGW
-
SEA
13h 00m
1 stop
C$ 802Icelandair
sob., 2 maj - pt., 15 maj
Icelandair Logo
3:35 p.m. - 10:55 a.m.
SEA
-
LGW
12h 20m
1 stop
Icelandair Logo
3:40 p.m. - 8:40 p.m.
LGW
-
SEA
13h 00m
1 stop
C$ 803Icelandair
śr., 25 mar - czw., 16 kwi
Icelandair Logo
7:00 p.m. - 11:45 a.m.
SEA
-
LGW
32h 45m
1 stop
Icelandair Logo
3:40 p.m. - 8:40 p.m.
LGW
-
SEA
13h 00m
1 stop
C$ 804Icelandair
czw., 30 kwi - śr., 6 maj

Icelandair flights from Seattle to London Gatwick Airport

Our best Icelandair deals on Seattle to London Gatwick Airport flight tickets
Icelandair
25 Feb
SEA2:35 p.m.Seattle/Tacoma Intl
12h 20m
1 stop
LGW10:55 a.m.London Gatwick
16 Mar
LGW11:55 a.m.London Gatwick
13h 05m
1 stop
SEA6:00 p.m.Seattle/Tacoma Intl
C$ 746
Icelandair
15 Apr
SEA7:00 p.m.Seattle/Tacoma Intl
11h 40m
1 stop
LGW2:40 p.m.London Gatwick
25 Apr
LGW3:40 p.m.London Gatwick
13h 00m
1 stop
SEA8:40 p.m.Seattle/Tacoma Intl
C$ 777
Icelandair
13 Apr
SEA7:00 p.m.Seattle/Tacoma Intl
11h 40m
1 stop
LGW2:40 p.m.London Gatwick
22 Apr
LGW3:40 p.m.London Gatwick
13h 00m
1 stop
SEA8:40 p.m.Seattle/Tacoma Intl
C$ 780

Turkish Airlines flights from Seattle to London Gatwick Airport

Our best Turkish Airlines deals on Seattle to London Gatwick Airport flight tickets
Turkish Airlines
11 Mar
SEA8:00 p.m.Seattle/Tacoma Intl
19h 35m
1 stop
LGW10:35 p.m.London Gatwick
25 Mar
LGW6:25 a.m.London Gatwick
18h 40m
1 stop
SEA6:05 p.m.Seattle/Tacoma Intl
C$ 1,019
Turkish Airlines
9 Mar
SEA8:00 p.m.Seattle/Tacoma Intl
19h 30m
1 stop
LGW10:30 p.m.London Gatwick
23 Mar
LGW6:20 a.m.London Gatwick
18h 45m
1 stop
SEA6:05 p.m.Seattle/Tacoma Intl
C$ 1,049
Turkish Airlines
8 Mar
SEA8:00 p.m.Seattle/Tacoma Intl
19h 35m
1 stop
LGW10:35 p.m.London Gatwick
23 Mar
LGW6:20 a.m.London Gatwick
18h 45m
1 stop
SEA6:05 p.m.Seattle/Tacoma Intl
C$ 1,054

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to London Gatwick Airport 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, momondo users made 96,600 searches. Data last updated 4 lutego 2026.
Use the filters below to find and compare flights from Seattle to London Gatwick Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

śr. 25/2

2:35 p.m.-10:55 a.m.

1 stop12h 20m

London Gatwick

pon. 16/3

11:55 a.m.-6:00 p.m.

1 stop13h 05m

C$ 746

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

śr. 15/4

7:00 p.m.-2:40 p.m.

1 stop11h 40m

London Gatwick

wt. 28/4

1:00 p.m.-5:55 p.m.

1 stop12h 55m

C$ 777

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

pon. 13/4

7:00 p.m.-2:40 p.m.

1 stop11h 40m

London Gatwick

pt. 24/4

3:40 p.m.-8:40 p.m.

1 stop13h 00m

C$ 780

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

ndz. 26/4

7:00 p.m.-2:40 p.m.

1 stop11h 40m

London Gatwick

pt. 8/5

3:40 p.m.-8:40 p.m.

1 stop13h 00m

C$ 788

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

ndz. 26/4

7:00 p.m.-2:40 p.m.

1 stop11h 40m

London Gatwick

sob. 9/5

3:40 p.m.-8:40 p.m.

1 stop13h 00m

C$ 791

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

wt. 10/3

3:00 p.m.-7:30 p.m.

2 stops21h 30m

London Gatwick

śr. 18/3

9:40 p.m.-1:10 p.m.

2 stops22h 30m

C$ 792

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

sob. 2/5

7:00 p.m.-2:40 p.m.

1 stop11h 40m

London Gatwick

śr. 13/5

3:40 p.m.-8:40 p.m.

1 stop13h 00m

C$ 799

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

sob. 2/5

7:00 p.m.-2:40 p.m.

1 stop11h 40m

London Gatwick

pt. 15/5

3:40 p.m.-8:40 p.m.

1 stop13h 00m

C$ 802

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

śr. 25/3

3:35 p.m.-10:55 a.m.

1 stop12h 20m

London Gatwick

czw. 16/4

3:40 p.m.-8:40 p.m.

1 stop13h 00m

C$ 803

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

czw. 30/4

7:00 p.m.-11:45 a.m.

1 stop32h 45m

London Gatwick

śr. 6/5

3:40 p.m.-8:40 p.m.

1 stop13h 00m

C$ 804

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

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

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 typical price of a round-trip flight between Seattle and London Gatwick Airport?

What is the cheapest month to fly to London Gatwick Airport?

If you are unable to visit London Gatwick Airport during the month of November, then departing from Seattle during the month January is also very affordable. Most momondo users find prices during this month for around C$ 739.

When to book flights from Seattle to London Gatwick Airport

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

Cheap Seattle to London Gatwick Airport (SEA to LGW) flight deals and tips

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

Fastest flight time

11h 40m

Direct flights

None
The fastest flight from Seattle to London Gatwick Airport takes 11h 40m
There are no direct flights from Seattle to London Gatwick Airport. There are no popular flight routes from Seattle to London Gatwick Airport.
Search flight deals

  • How far is Seattle/Tacoma Intl to London Gatwick by plane?

    Seattle/Tacoma Intl and London Gatwick are 7722.7 km apart from one another. A reasonable flight in good conditions will take 11h 40m.

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

    Prices for flights from Seattle/Tacoma Intl Airport to London Gatwick Airport are updated daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to London Gatwick 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 Seattle/Tacoma Intl Airport to London Gatwick Airport.

  • What documentation or ID do you need to fly to London Gatwick Airport?

    The travel and health documents you'll need for your trip to London Gatwick Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Gatwick Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Ilford
Gatwick
Wokingham
Slough
Feltham
Hayes
Richmond
Uxbridge
Wembley
Waterlooville
Newport
Chelmsford
Basingstoke
Milton Keynes
Dover
Worthing
Guildford
Ipswich
Maidstone

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to London for you.

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

All flight searches from Seattle to London on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Seattle to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Seattle and alert you when they change.

An easier way to manage your London Gatwick Airport trip

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