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Cheap flights from Seattle to London from $367

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 1/16. 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
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.
Iberia Logo
10:45 am - 2:35 pmSEA-LCY
19h 50m2 stops
Iberia Logo
7:15 pm - 9:37 amLCY-SEA
22h 22m2 stops
$614Iberia
Find Deal
Mon, Feb 2 - Mon, Feb 9
Delta Logo
3:05 pm - 4:35 pmSEA-LCY
17h 30m1 stop
Delta Logo
8:40 am - 11:50 amLCY-SEA
35h 10m1 stop
$632Delta
Find Deal
Mon, Dec 1 - Tue, Dec 9
Delta Logo
5:25 am - 8:10 amSEA-LCY
42h 45m2 stops
Delta Logo
9:20 am - 11:50 amLCY-SEA
34h 30m1 stop
$636Delta
Find Deal
Tue, Dec 2 - Wed, Dec 10
Virgin Atlantic Logo
3:10 pm - 5:20 pmSEA-LCY
18h 10m1 stop
Virgin Atlantic Logo
8:05 pm - 11:50 amLCY-SEA
23h 45m1 stop
$640Virgin Atlantic
Find Deal
Tue, Jan 13 - Wed, Jan 28
Delta Logo
3:05 pm - 4:35 pmSEA-LCY
17h 30m1 stop
Delta Logo
7:45 am - 2:59 pmLCY-SEA
39h 14m2 stops
$642Delta
Find Deal
Mon, Dec 1 - Wed, Dec 10
Virgin Atlantic Logo
3:10 pm - 5:20 pmSEA-LCY
18h 10m1 stop
Virgin Atlantic Logo
8:05 pm - 11:50 amLCY-SEA
23h 45m1 stop
$643Virgin Atlantic
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Wed, Jan 21 - Sun, Jan 25
Virgin Atlantic Logo
7:10 am - 8:10 amSEA-LCY
17h 00m2 stops
Virgin Atlantic Logo
5:50 pm - 11:50 amLCY-SEA
26h 00m1 stop
$644Virgin Atlantic
Find Deal
Tue, Jan 13 - Wed, Jan 28
Virgin Atlantic Logo
3:05 pm - 4:35 pmSEA-LCY
17h 30m1 stop
Virgin Atlantic Logo
8:40 am - 10:25 pmLCY-SEA
21h 45m2 stops
$645Virgin Atlantic
Find Deal
Tue, Dec 9 - Sat, Feb 28
Virgin Atlantic Logo
7:10 am - 9:30 amSEA-LCY
18h 20m2 stops
Virgin Atlantic Logo
8:05 pm - 11:40 amLCY-SEA
23h 35m1 stop
$647Virgin Atlantic
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Thu, Jan 29 - Tue, Feb 3
Virgin Atlantic Logo
7:10 am - 7:15 amSEA-LCY
16h 05m2 stops
Virgin Atlantic Logo
8:05 pm - 11:50 amLCY-SEA
23h 45m1 stop
$648Virgin Atlantic
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Wed, Jan 21 - Sun, Jan 25

Lufthansa flights from Seattle to London City Airport

Our best Lufthansa deals on Seattle to London City Airport flight tickets
Lufthansa
Apr 29
SEA2:10 pmSeattle/Tacoma Intl
20h 25m
1 stop
LCY6:35 pmLondon City
May 13
LCY9:15 amLondon City
21h 01m
2 stops
SEA10:16 pmSeattle/Tacoma Intl
$665
Find similar
Lufthansa
Jan 8
SEA2:00 pmSeattle/Tacoma Intl
19h 40m
1 stop
LCY5:40 pmLondon City
Jan 16
LCY6:15 pmLondon City
25h 55m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$706
Find similar
Lufthansa
Jan 7
SEA3:10 pmSeattle/Tacoma Intl
18h 30m
2 stops
LCY5:40 pmLondon City
Jan 14
LCY9:50 amLondon City
34h 20m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$712
Find similar

Virgin Atlantic flights from Seattle to London City Airport

Our best Virgin Atlantic deals on Seattle to London City Airport flight tickets
Virgin Atlantic
Jan 13
SEA3:10 pmSeattle/Tacoma Intl
18h 10m
1 stop
LCY5:20 pmLondon City
Jan 28
LCY8:05 pmLondon City
23h 45m
1 stop
SEA11:50 amSeattle/Tacoma Intl
$640
Find similar
Virgin Atlantic
Jan 21
SEA3:10 pmSeattle/Tacoma Intl
18h 10m
1 stop
LCY5:20 pmLondon City
Jan 25
LCY8:05 pmLondon City
23h 45m
1 stop
SEA11:50 amSeattle/Tacoma Intl
$643
Find similar
Virgin Atlantic
Jan 13
SEA7:10 amSeattle/Tacoma Intl
17h 00m
2 stops
LCY8:10 amLondon City
Jan 28
LCY5:50 pmLondon City
26h 00m
1 stop
SEA11:50 amSeattle/Tacoma Intl
$644
Find similar

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 November 14, 2025.
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 2/2

10:45 am-2:35 pm

2 stops19h 50m

London City

Mon 2/9

7:15 pm-9:37 am

2 stops22h 22m

$614

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 12/1

3:05 pm-4:35 pm

1 stop17h 30m

London City

Tue 12/9

8:40 am-11:50 am

1 stop35h 10m

$632

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 12/2

5:25 am-8:10 am

2 stops42h 45m

London City

Wed 12/10

9:20 am-11:50 am

1 stop34h 30m

$636

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 1/13

3:10 pm-5:20 pm

1 stop18h 10m

London City

Wed 1/28

8:05 pm-11:50 am

1 stop23h 45m

$640

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 12/1

3:05 pm-4:35 pm

1 stop17h 30m

London City

Wed 12/10

7:45 am-2:59 pm

2 stops39h 14m

$642

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 1/21

3:10 pm-5:20 pm

1 stop18h 10m

London City

Sun 1/25

8:05 pm-11:50 am

1 stop23h 45m

$643

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 1/13

7:10 am-8:10 am

2 stops17h 00m

London City

Wed 1/28

5:50 pm-11:50 am

1 stop26h 00m

$644

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 12/9

3:05 pm-4:35 pm

1 stop17h 30m

London City

Sat 2/28

8:40 am-10:25 pm

2 stops21h 45m

$645

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Thu 1/29

7:10 am-9:30 am

2 stops18h 20m

London City

Tue 2/3

8:05 pm-11:40 am

1 stop23h 35m

$647

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 1/21

7:10 am-7:15 am

2 stops16h 05m

London City

Sun 1/25

8:05 pm-11:50 am

1 stop23h 45m

$648

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?

SWISS, United Airlines, and Lufthansa 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

Direct flights

None
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 15h 45m.

  • 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
7.4
1,575 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
Dover
Luton
Slough
Guildford
Hayes
Dartford
Crawley
Brentwood
Chelmsford
Wembley
Folkestone
Romford
Ilford
Cobham
Stansted
Harrow
Watford

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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