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Cheap flights from Seattle to London from $378

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 8/10. 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.
Virgin Atlantic Logo
4:05 pm - 6:25 pm
SEA
-
LCY
19h 20m
1 stop
Virgin Atlantic Logo
6:55 pm - 12:35 pm
LCY
-
SEA
24h 40m
1 stop
$654Virgin Atlantic
Mon, Mar 9 - Mon, Mar 16
Multiple Airlines Logo
8:00 pm - 5:55 pm
SEA
-
LCY
37h 55m
2 stops
Multiple Airlines Logo
9:15 am - 6:30 pm
LCY
-
SEA
17h 15m
2 stops
$659Multiple Airlines
Tue, Apr 7 - Thu, May 7
Virgin Atlantic Logo
4:05 pm - 6:25 pm
SEA
-
LCY
19h 20m
1 stop
Virgin Atlantic Logo
7:45 am - 10:10 pm
LCY
-
SEA
21h 25m
2 stops
$664Virgin Atlantic
Mon, Mar 9 - Mon, Mar 16
Virgin Atlantic Logo
4:05 pm - 5:20 pm
SEA
-
LCY
18h 15m
1 stop
Virgin Atlantic Logo
8:40 am - 10:22 pm
LCY
-
SEA
20h 42m
2 stops
$665Virgin Atlantic
Tue, Mar 10 - Tue, Mar 17
Virgin Atlantic Logo
5:30 pm - 5:20 pm
SEA
-
LCY
15h 50m
1 stop
Virgin Atlantic Logo
10:00 am - 4:30 pm
LCY
-
SEA
14h 30m
1 stop
$668Virgin Atlantic
Mon, Apr 6 - Wed, Apr 29
Delta Logo
4:05 pm - 4:35 pm
SEA
-
LCY
17h 30m
1 stop
Delta Logo
9:40 am - 4:30 pm
LCY
-
SEA
14h 50m
1 stop
$669Delta
Wed, Mar 25 - Fri, Apr 3
Multiple Airlines Logo
7:00 am - 5:55 pm
SEA
-
LCY
26h 55m
2 stops
Multiple Airlines Logo
7:15 pm - 6:30 pm
LCY
-
SEA
31h 15m
2 stops
$671Multiple Airlines
Wed, Apr 22 - Mon, May 4
Multiple Airlines Logo
2:10 pm - 5:55 pm
SEA
-
LCY
19h 45m
1 stop
Multiple Airlines Logo
7:15 pm - 6:30 pm
LCY
-
SEA
31h 15m
2 stops
$672Multiple Airlines
Wed, Apr 22 - Mon, May 4
Virgin Atlantic Logo
1:45 pm - 7:45 pm
SEA
-
LCY
22h 00m
1 stop
Virgin Atlantic Logo
10:00 am - 10:39 pm
LCY
-
SEA
20h 39m
2 stops
$678Virgin Atlantic
Sun, May 10 - Tue, May 19
Virgin Atlantic Logo
4:05 pm - 5:20 pm
SEA
-
LCY
18h 15m
1 stop
Virgin Atlantic Logo
9:20 am - 10:10 pm
LCY
-
SEA
20h 50m
2 stops
$679Virgin Atlantic
Wed, Mar 25 - Wed, Apr 1

Virgin Atlantic flights from Seattle to London City Airport

Our best Virgin Atlantic deals on Seattle to London City Airport flight tickets
Virgin Atlantic
Mar 9
SEA4:05 pmSeattle/Tacoma Intl
19h 20m
1 stop
LCY6:25 pmLondon City
Mar 16
LCY6:55 pmLondon City
24h 40m
1 stop
SEA12:35 pmSeattle/Tacoma Intl
$654
Virgin Atlantic
Mar 9
SEA4:05 pmSeattle/Tacoma Intl
19h 20m
1 stop
LCY6:25 pmLondon City
Mar 16
LCY7:45 amLondon City
21h 25m
2 stops
SEA10:10 pmSeattle/Tacoma Intl
$664
Virgin Atlantic
Mar 10
SEA4:05 pmSeattle/Tacoma Intl
18h 15m
1 stop
LCY5:20 pmLondon City
Mar 17
LCY8:40 amLondon City
20h 42m
2 stops
SEA10:22 pmSeattle/Tacoma Intl
$665

Delta flights from Seattle to London City Airport

Our best Delta deals on Seattle to London City Airport flight tickets
Delta
Mar 25
SEA4:05 pmSeattle/Tacoma Intl
17h 30m
1 stop
LCY4:35 pmLondon City
Apr 3
LCY9:40 amLondon City
14h 50m
1 stop
SEA4:30 pmSeattle/Tacoma Intl
$669
Delta
Feb 25
SEA3:05 pmSeattle/Tacoma Intl
17h 30m
1 stop
LCY4:35 pmLondon City
Mar 2
LCY8:40 amLondon City
34h 55m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$754
Delta
Mar 2
SEA3:05 pmSeattle/Tacoma Intl
17h 30m
1 stop
LCY4:35 pmLondon City
Apr 1
LCY8:25 amLondon City
16h 05m
1 stop
SEA4:30 pmSeattle/Tacoma Intl
$770

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 February 11, 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

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 3/9

4:05 pm-6:25 pm

1 stop19h 20m

London City

Mon 3/16

6:55 pm-12:35 pm

1 stop24h 40m

$654

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 4/7

8:00 pm-5:55 pm

2 stops37h 55m

London City

Thu 5/7

9:15 am-6:30 pm

2 stops17h 15m

$659

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 3/9

4:05 pm-6:25 pm

1 stop19h 20m

London City

Mon 3/16

7:45 am-10:10 pm

2 stops21h 25m

$664

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 3/10

4:05 pm-5:20 pm

1 stop18h 15m

London City

Tue 3/17

8:40 am-10:22 pm

2 stops20h 42m

$665

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 4/6

5:30 pm-5:20 pm

1 stop15h 50m

London City

Wed 4/29

10:00 am-4:30 pm

1 stop14h 30m

$668

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 3/25

4:05 pm-4:35 pm

1 stop17h 30m

London City

Fri 4/3

9:40 am-4:30 pm

1 stop14h 50m

$669

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 4/22

7:00 am-5:55 pm

2 stops26h 55m

London City

Mon 5/4

7:15 pm-6:30 pm

2 stops31h 15m

$671

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 4/22

2:10 pm-5:55 pm

1 stop19h 45m

London City

Mon 5/4

7:15 pm-6:30 pm

2 stops31h 15m

$672

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Sun 5/10

1:45 pm-7:45 pm

1 stop22h 00m

London City

Tue 5/19

10:00 am-10:39 pm

2 stops20h 39m

$678

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 3/25

4:05 pm-5:20 pm

1 stop18h 15m

London City

Wed 4/1

9:20 am-10:10 pm

2 stops20h 50m

$679

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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2

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?

SWISS, Lufthansa, and United Airlines 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

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

  • 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.

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

Best airlines flying from Seattle to London City Airport

Compare and see reviews for airlines that fly from Seattle to London City Airport with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $962Free CancellationRating
7.3
1,679 reviews
Search Scandinavian Airlines flights

Traveling to a place near London?

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

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.

An easier way to manage your London City Airport trip

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