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Cheap flights from Seattle to London from $320

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 11/24. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Seattle to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
SWISS Logo
1:16 pm - 12:50 pm
SEA
-
LCY
39h 34m
2 stops
SWISS Logo
9:15 am - 10:59 pm
LCY
-
SEA
21h 44m
2 stops
$787SWISS
Mon, Nov 2 - Thu, Nov 5
Virgin Atlantic Logo
2:35 pm - 7:35 pm
SEA
-
LCY
21h 00m
1 stop
Virgin Atlantic Logo
5:05 pm - 11:47 am
LCY
-
SEA
26h 42m
1 stop
$876Virgin Atlantic
Sun, Nov 1 - Mon, Nov 9
Virgin Atlantic Logo
2:35 pm - 4:35 pm
SEA
-
LCY
18h 00m
1 stop
Virgin Atlantic Logo
8:05 pm - 11:47 am
LCY
-
SEA
23h 42m
1 stop
$876Virgin Atlantic
Tue, Nov 10 - Wed, Nov 18
Virgin Atlantic Logo
2:35 pm - 4:35 pm
SEA
-
LCY
18h 00m
1 stop
Virgin Atlantic Logo
8:05 pm - 11:47 am
LCY
-
SEA
23h 42m
1 stop
$877Virgin Atlantic
Wed, Nov 4 - Wed, Nov 18
Virgin Atlantic Logo
2:35 pm - 7:35 pm
SEA
-
LCY
21h 00m
1 stop
Virgin Atlantic Logo
5:50 pm - 11:47 am
LCY
-
SEA
25h 57m
1 stop
$877Virgin Atlantic
Sun, Nov 1 - Wed, Nov 11
Virgin Atlantic Logo
2:35 pm - 5:20 pm
SEA
-
LCY
18h 45m
1 stop
Virgin Atlantic Logo
5:05 pm - 11:47 am
LCY
-
SEA
26h 42m
1 stop
$877Virgin Atlantic
Wed, Nov 11 - Wed, Nov 25
Virgin Atlantic Logo
2:35 pm - 5:20 pm
SEA
-
LCY
18h 45m
1 stop
Virgin Atlantic Logo
8:05 pm - 11:47 am
LCY
-
SEA
23h 42m
1 stop
$877Virgin Atlantic
Wed, Nov 4 - Mon, Nov 9
Virgin Atlantic Logo
2:35 pm - 4:35 pm
SEA
-
LCY
18h 00m
1 stop
Virgin Atlantic Logo
8:05 pm - 11:50 am
LCY
-
SEA
23h 45m
1 stop
$877Virgin Atlantic
Tue, Dec 1 - Wed, Dec 9
Virgin Atlantic Logo
2:35 pm - 6:25 pm
SEA
-
LCY
19h 50m
1 stop
Virgin Atlantic Logo
5:50 pm - 11:50 am
LCY
-
SEA
26h 00m
1 stop
$877Virgin Atlantic
Tue, Nov 24 - Wed, Dec 2
Virgin Atlantic Logo
2:35 pm - 7:35 pm
SEA
-
LCY
21h 00m
1 stop
Virgin Atlantic Logo
8:05 pm - 11:47 am
LCY
-
SEA
23h 42m
1 stop
$877Virgin Atlantic
Mon, Nov 9 - Wed, Nov 18

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Lufthansa flights from Seattle to London City Airport

Our best Lufthansa deals on Seattle to London City Airport flight tickets
Lufthansa
Oct 11
SEA7:20 pmSeattle/Tacoma Intl
38h 35m
2 stops
LCY5:55 pmLondon City
Oct 14
LCY9:15 amLondon City
35h 05m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$853
Lufthansa
Nov 15
SEA1:50 pmSeattle/Tacoma Intl
19h 50m
1 stop
LCY5:40 pmLondon City
Nov 23
LCY6:15 pmLondon City
47h 12m
2 stops
SEA9:27 amSeattle/Tacoma Intl
$924
Lufthansa
Nov 15
SEA2:50 pmSeattle/Tacoma Intl
18h 50m
2 stops
LCY5:40 pmLondon City
Nov 23
LCY6:15 pmLondon City
47h 12m
2 stops
SEA9:27 amSeattle/Tacoma Intl
$945

SWISS flights from Seattle to London City Airport

Our best SWISS deals on Seattle to London City Airport flight tickets
SWISS
Nov 2
SEA1:16 pmSeattle/Tacoma Intl
39h 34m
2 stops
LCY12:50 pmLondon City
Nov 5
LCY9:15 amLondon City
21h 44m
2 stops
SEA10:59 pmSeattle/Tacoma Intl
$787
SWISS
Oct 12
SEA7:00 amSeattle/Tacoma Intl
26h 30m
2 stops
LCY5:30 pmLondon City
Oct 14
LCY1:10 pmLondon City
37h 22m
2 stops
SEA6:32 pmSeattle/Tacoma Intl
$825
SWISS
Nov 1
SEA1:16 pmSeattle/Tacoma Intl
21h 14m
2 stops
LCY6:30 pmLondon City
Nov 11
LCY9:15 amLondon City
21h 52m
2 stops
SEA11:07 pmSeattle/Tacoma Intl
$899

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 July 30, 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

Mon 11/2

1:16 pm-12:50 pm

2 stops39h 34m

London City

Thu 11/5

9:15 am-10:59 pm

2 stops21h 44m

$787

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Sun 11/1

2:35 pm-7:35 pm

1 stop21h 00m

London City

Mon 11/9

5:05 pm-11:47 am

1 stop26h 42m

$876
Quickest round-trip

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 11/10

2:35 pm-4:35 pm

1 stop18h 00m

London City

Wed 11/18

8:05 pm-11:47 am

1 stop23h 42m

$876

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 11/4

2:35 pm-4:35 pm

1 stop18h 00m

London City

Wed 11/18

8:05 pm-11:47 am

1 stop23h 42m

$877

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Sun 11/1

2:35 pm-7:35 pm

1 stop21h 00m

London City

Wed 11/11

5:50 pm-11:47 am

1 stop25h 57m

$877

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 11/11

2:35 pm-5:20 pm

1 stop18h 45m

London City

Wed 11/25

5:05 pm-11:47 am

1 stop26h 42m

$877

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 11/4

2:35 pm-5:20 pm

1 stop18h 45m

London City

Mon 11/9

8:05 pm-11:47 am

1 stop23h 42m

$877

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 12/1

2:35 pm-4:35 pm

1 stop18h 00m

London City

Wed 12/9

8:05 pm-11:50 am

1 stop23h 45m

$877

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 11/24

2:35 pm-6:25 pm

1 stop19h 50m

London City

Wed 12/2

5:50 pm-11:50 am

1 stop26h 00m

$877

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 11/9

2:35 pm-7:35 pm

1 stop21h 00m

London City

Wed 11/18

8:05 pm-11:47 am

1 stop23h 42m

$877

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 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 40m

Direct flights

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

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 40m.

  • 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
Luton
Hayes
Dover
Croydon
Wembley
Stansted
Kingston upon Thames
Watford
Slough
Harrow
Cobham
Richmond
Uxbridge
Guildford
Worthing
Romford
Ilford

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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