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Cheap flights from Seattle to London from $449

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 10/19. 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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Find the cheapest flights from Seattle to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
1:50 pm - 7:45 pm
SEA
-
LCY
21h 55m
1 stop
Virgin Atlantic Logo
5:50 pm - 11:37 am
LCY
-
SEA
25h 47m
1 stop
$932Virgin Atlantic
Tue, Aug 18 - Tue, Aug 25
Delta Logo
1:50 pm - 9:30 am
SEA
-
LCY
11h 40m
1 stop
Delta Logo
10:00 am - 4:35 pm
LCY
-
SEA
14h 35m
1 stop
$933Delta
Mon, Sep 14 - Thu, Sep 24
Virgin Atlantic Logo
5:40 pm - 6:30 pm
SEA
-
LCY
16h 50m
1 stop
Virgin Atlantic Logo
8:25 am - 8:47 pm
LCY
-
SEA
20h 22m
2 stops
$934Virgin Atlantic
Wed, Oct 14 - Wed, Oct 21
Lufthansa Logo
2:10 pm - 5:55 pm
SEA
-
LCY
19h 45m
1 stop
Lufthansa Logo
9:15 am - 6:32 pm
LCY
-
SEA
17h 17m
2 stops
$936Lufthansa
Tue, Aug 25 - Wed, Sep 9
Virgin Atlantic Logo
5:10 am - 9:30 am
SEA
-
LCY
20h 20m
2 stops
Virgin Atlantic Logo
5:50 pm - 11:37 am
LCY
-
SEA
25h 47m
1 stop
$937Virgin Atlantic
Wed, Aug 12 - Wed, Aug 19
Delta Logo
1:45 pm - 4:40 pm
SEA
-
LCY
18h 55m
2 stops
Delta Logo
10:00 am - 11:52 am
LCY
-
SEA
33h 52m
1 stop
$938Delta
Wed, Oct 7 - Wed, Oct 14
SWISS Logo
1:19 pm - 5:25 pm
SEA
-
LCY
20h 06m
2 stops
SWISS Logo
9:15 am - 6:32 pm
LCY
-
SEA
17h 17m
2 stops
$939SWISS
Tue, Sep 15 - Wed, Sep 23
Virgin Atlantic Logo
2:35 pm - 5:20 pm
SEA
-
LCY
18h 45m
1 stop
Virgin Atlantic Logo
8:40 am - 8:27 pm
LCY
-
SEA
19h 47m
2 stops
$942Virgin Atlantic
Tue, Nov 10 - Wed, Nov 18
Virgin Atlantic Logo
1:45 pm - 5:20 pm
SEA
-
LCY
19h 35m
1 stop
Virgin Atlantic Logo
8:05 pm - 4:53 pm
LCY
-
SEA
27h 48m
2 stops
$943Virgin Atlantic
Tue, Oct 20 - Mon, Oct 26
Virgin Atlantic Logo
5:10 am - 7:15 am
SEA
-
LCY
18h 05m
2 stops
Virgin Atlantic Logo
9:20 am - 8:33 pm
LCY
-
SEA
19h 13m
2 stops
$947Virgin Atlantic
Wed, Aug 12 - Fri, Aug 21

Virgin Atlantic flights from Seattle to London City Airport

Our best Virgin Atlantic deals on Seattle to London City Airport flight tickets
Virgin Atlantic
Oct 14
SEA5:40 pmSeattle/Tacoma Intl
16h 50m
1 stop
LCY6:30 pmLondon City
Oct 21
LCY8:25 amLondon City
20h 22m
2 stops
SEA8:47 pmSeattle/Tacoma Intl
$934
Virgin Atlantic
Aug 12
SEA5:10 amSeattle/Tacoma Intl
20h 20m
2 stops
LCY9:30 amLondon City
Aug 19
LCY5:50 pmLondon City
25h 47m
1 stop
SEA11:37 amSeattle/Tacoma Intl
$937
Virgin Atlantic
Nov 10
SEA2:35 pmSeattle/Tacoma Intl
18h 45m
1 stop
LCY5:20 pmLondon City
Nov 18
LCY8:40 amLondon City
19h 47m
2 stops
SEA8:27 pmSeattle/Tacoma Intl
$942

KLM flights from Seattle to London City Airport

Our best KLM deals on Seattle to London City Airport flight tickets
KLM
Oct 9
SEA1:45 pmSeattle/Tacoma Intl
11h 45m
1 stop
LCY9:30 amLondon City
Oct 20
LCY10:00 amLondon City
14h 39m
1 stop
SEA4:39 pmSeattle/Tacoma Intl
$983
KLM
Jul 19
SEA1:45 pmSeattle/Tacoma Intl
11h 45m
1 stop
LCY9:30 amLondon City
Aug 22
LCY10:00 amLondon City
14h 27m
1 stop
SEA4:27 pmSeattle/Tacoma Intl
$1,006
KLM
Aug 27
SEA1:50 pmSeattle/Tacoma Intl
11h 40m
1 stop
LCY9:30 amLondon City
Sep 11
LCY10:00 amLondon City
14h 35m
1 stop
SEA4:35 pmSeattle/Tacoma Intl
$1,007

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to London City 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 15, 2026.
Use the filters below to find and compare flights from Seattle to London City Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 8/18

1:50 pm-7:45 pm

1 stop21h 55m

London City

Tue 8/25

5:50 pm-11:37 am

1 stop25h 47m

$932
Quickest round-trip

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 9/14

1:50 pm-9:30 am

1 stop11h 40m

London City

Thu 9/24

10:00 am-4:35 pm

1 stop14h 35m

$933

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 10/14

5:40 pm-6:30 pm

1 stop16h 50m

London City

Wed 10/21

8:25 am-8:47 pm

2 stops20h 22m

$934

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 8/25

2:10 pm-5:55 pm

1 stop19h 45m

London City

Wed 9/9

9:15 am-6:32 pm

2 stops17h 17m

$936

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 8/12

5:10 am-9:30 am

2 stops20h 20m

London City

Wed 8/19

5:50 pm-11:37 am

1 stop25h 47m

$937

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 10/7

1:45 pm-4:40 pm

2 stops18h 55m

London City

Wed 10/14

10:00 am-11:52 am

1 stop33h 52m

$938

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 9/15

1:19 pm-5:25 pm

2 stops20h 06m

London City

Wed 9/23

9:15 am-6:32 pm

2 stops17h 17m

$939

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 11/10

2:35 pm-5:20 pm

1 stop18h 45m

London City

Wed 11/18

8:40 am-8:27 pm

2 stops19h 47m

$942

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 10/20

1:45 pm-5:20 pm

1 stop19h 35m

London City

Mon 10/26

8:05 pm-4:53 pm

2 stops27h 48m

$943

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 8/12

5:10 am-7:15 am

2 stops18h 05m

London City

Fri 8/21

9:20 am-8:33 pm

2 stops19h 13m

$947

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 City 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 cheapest airline that flies from Seattle/Tacoma Intl to London City?

Virgin Atlantic, KLM, and Delta are the most popular carriers operating from Seattle/Tacoma Intl to London City

When to book flights from Seattle to London City Airport

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

Cheap Seattle to London City Airport (SEA to LCY) flight deals and tips

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

Fastest flight time

11h 35m

Direct flights

None
The fastest flight from Seattle to London City Airport takes 11h 35m
There are no direct flights from Seattle to London City Airport. There are no popular flight routes from Seattle to London City Airport.
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Frequently asked questions about flying from Seattle to London City Airport

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

    The distance between Seattle/Tacoma Intl and London City is about 4785.6 mi. In terms of flight time, this usually takes a little over 11h 35m.

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

    Prices for flights from Seattle/Tacoma Intl Airport to London City Airport are refreshed on a daily basis.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to London City Airport.

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

    The travel and health documents you'll need for your trip to London City 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 City Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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
Wembley
Slough
Croydon
Stansted
Watford
Harrow
Brentwood
Dartford
Cobham
Folkestone
Romford
Uxbridge
Guildford

Why use momondo?

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

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

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

Yes. All flights to London from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

Of course. momondo tracks the price of Seattle to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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