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Cheap flights from Seattle to London from $480

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 6/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Seattle to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
7:00 pm - 2:40 pm
SEA
-
LGW
11h 40m
1 stop
Icelandair Logo
3:40 pm - 5:55 pm
LGW
-
SEA
34h 15m
1 stop
$796Icelandair
Wed, Sep 30 - Mon, Oct 5
Multiple Airlines Logo
7:00 pm - 8:00 pm
SEA
-
LGW
17h 00m
2 stops
Multiple Airlines Logo
5:50 pm - 11:45 am
LGW
-
SEA
25h 55m
2 stops
$799Multiple Airlines
Thu, Jun 4 - Tue, Jun 9
Condor Logo
6:35 pm - 6:50 pm
SEA
-
LGW
17h 15m
1 stop
Condor Logo
9:55 am - 4:35 pm
LGW
-
SEA
13h 40m
1 stop
$801Condor
Sat, Oct 24 - Sat, Oct 31
Multiple Airlines Logo
3:40 pm - 7:15 pm
SEA
-
LGW
19h 35m
2 stops
Multiple Airlines Logo
11:00 am - 11:45 am
LGW
-
SEA
32h 45m
2 stops
$802Multiple Airlines
Tue, Aug 11 - Thu, Aug 20
Multiple Airlines Logo
3:40 pm - 8:35 pm
SEA
-
LGW
20h 55m
3 stops
Multiple Airlines Logo
9:20 am - 11:45 am
LGW
-
SEA
34h 25m
2 stops
$804Multiple Airlines
Mon, Jun 1 - Mon, Jun 8
Condor Logo
6:10 pm - 6:50 pm
SEA
-
LGW
16h 40m
1 stop
Condor Logo
10:20 am - 4:00 pm
LGW
-
SEA
13h 40m
1 stop
$805Condor
Mon, May 18 - Fri, Jun 5
Icelandair Logo
7:00 pm - 2:40 pm
SEA
-
LGW
11h 40m
1 stop
Icelandair Logo
3:40 pm - 5:55 pm
LGW
-
SEA
34h 15m
1 stop
$806Icelandair
Thu, Sep 10 - Wed, Sep 30
Icelandair Logo
3:40 pm - 2:40 pm
SEA
-
LGW
15h 00m
1 stop
Icelandair Logo
3:40 pm - 8:40 pm
LGW
-
SEA
13h 00m
1 stop
$807Icelandair
Fri, Sep 25 - Mon, Oct 5
Icelandair Logo
11:25 pm - 2:40 pm
SEA
-
LGW
31h 15m
1 stop
Icelandair Logo
3:40 pm - 8:40 pm
LGW
-
SEA
13h 00m
1 stop
$810Icelandair
Thu, Sep 3 - Fri, Sep 18
Condor Logo
6:05 pm - 6:50 pm
SEA
-
LGW
16h 45m
1 stop
Condor Logo
9:55 am - 4:35 pm
LGW
-
SEA
13h 40m
1 stop
$812Condor
Thu, Oct 1 - Sat, Oct 31

Condor flights from Seattle to London Gatwick Airport

Our best Condor deals on Seattle to London Gatwick Airport flight tickets
Condor
Oct 24
SEA6:35 pmSeattle/Tacoma Intl
17h 15m
1 stop
LGW6:50 pmLondon Gatwick
Oct 31
LGW9:55 amLondon Gatwick
13h 40m
1 stop
SEA4:35 pmSeattle/Tacoma Intl
$801
Condor
May 18
SEA6:10 pmSeattle/Tacoma Intl
16h 40m
1 stop
LGW6:50 pmLondon Gatwick
Jun 5
LGW10:20 amLondon Gatwick
13h 40m
1 stop
SEA4:00 pmSeattle/Tacoma Intl
$805
Condor
Oct 1
SEA6:05 pmSeattle/Tacoma Intl
16h 45m
1 stop
LGW6:50 pmLondon Gatwick
Oct 31
LGW9:55 amLondon Gatwick
13h 40m
1 stop
SEA4:35 pmSeattle/Tacoma Intl
$812

Icelandair flights from Seattle to London Gatwick Airport

Our best Icelandair deals on Seattle to London Gatwick Airport flight tickets
Icelandair
Sep 30
SEA7:00 pmSeattle/Tacoma Intl
11h 40m
1 stop
LGW2:40 pmLondon Gatwick
Oct 5
LGW3:40 pmLondon Gatwick
34h 15m
1 stop
SEA5:55 pmSeattle/Tacoma Intl
$796
Icelandair
Sep 10
SEA7:00 pmSeattle/Tacoma Intl
11h 40m
1 stop
LGW2:40 pmLondon Gatwick
Sep 30
LGW3:40 pmLondon Gatwick
34h 15m
1 stop
SEA5:55 pmSeattle/Tacoma Intl
$806
Icelandair
Sep 25
SEA3:40 pmSeattle/Tacoma Intl
15h 00m
1 stop
LGW2:40 pmLondon Gatwick
Oct 5
LGW3:40 pmLondon Gatwick
13h 00m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
$807

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 832,500 searches. Data last updated May 6, 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

Cheapest round-trip

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 9/30

7:00 pm-2:40 pm

1 stop11h 40m

London Gatwick

Mon 10/5

3:40 pm-5:55 pm

1 stop34h 15m

$796

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 6/4

7:00 pm-8:00 pm

2 stops17h 00m

London Gatwick

Tue 6/9

5:50 pm-11:45 am

2 stops25h 55m

$799

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 10/24

6:35 pm-6:50 pm

1 stop17h 15m

London Gatwick

Sat 10/31

9:55 am-4:35 pm

1 stop13h 40m

$801

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 8/11

3:40 pm-7:15 pm

2 stops19h 35m

London Gatwick

Thu 8/20

11:00 am-11:45 am

2 stops32h 45m

$802

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 6/1

3:40 pm-8:35 pm

3 stops20h 55m

London Gatwick

Mon 6/8

9:20 am-11:45 am

2 stops34h 25m

$804

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 5/18

6:10 pm-6:50 pm

1 stop16h 40m

London Gatwick

Fri 6/5

10:20 am-4:00 pm

1 stop13h 40m

$805

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 9/10

7:00 pm-2:40 pm

1 stop11h 40m

London Gatwick

Wed 9/30

3:40 pm-5:55 pm

1 stop34h 15m

$806
Quickest round-trip

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 9/25

3:40 pm-2:40 pm

1 stop15h 00m

London Gatwick

Mon 10/5

3:40 pm-8:40 pm

1 stop13h 00m

$807

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 9/3

11:25 pm-2:40 pm

1 stop31h 15m

London Gatwick

Fri 9/18

3:40 pm-8:40 pm

1 stop13h 00m

$810

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 10/1

6:05 pm-6:50 pm

1 stop16h 45m

London Gatwick

Sat 10/31

9:55 am-4:35 pm

1 stop13h 40m

$812

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?

In general, November is the cheapest month to fly from Seattle to London Gatwick Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $519. 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 $541.

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

Frequently asked questions about flying from Seattle to London Gatwick Airport

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

    Seattle/Tacoma Intl and London Gatwick are 4798.7 mi apart from one another. In terms of flight time, this usually takes a little over 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 refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to London Gatwick Airport?

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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.

  • What is the most popular airline from Seattle to London Gatwick Airport?

Best airlines flying from Seattle to London Gatwick Airport

Compare and see reviews for airlines that fly from Seattle to London Gatwick Airport with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $503Free CancellationRating
7.0
650 reviews
Search Icelandair flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Dover
Luton
Hayes
Crawley
Slough
Wembley
Stansted
Watford
Croydon
Uxbridge
Brentwood
Dartford
Cobham
Folkestone
Romford
Harrow
Guildford

Why use momondo?

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

It is quick and easy to find Seattle to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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

Yes. momondo enables you to select and highlight flights to London from Seattle with this policy.

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

Once you have performed a search for Seattle to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to London from Seattle 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.

An easier way to manage your London Gatwick Airport trip

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