Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Seattle to London from £280

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 2/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Seattle to London

Cheap return flights

Logo
11:05 - 12:50SEA-LCY
17h 45m2 stops
Logo
09:15 - 22:16LCY-SEA
20h 01m2 stops
£405
Find Deal
Wed, 4 Mar - Tue, 10 Mar
SWISS Logo
13:00 - 08:50SEA-LCY
35h 50m2 stops
SWISS Logo
09:25 - 18:36LCY-SEA
17h 11m2 stops
£411SWISS
Find Deal
Wed, 1 Oct - Tue, 14 Oct
SWISS Logo
15:37 - 17:05SEA-LCY
17h 28m2 stops
SWISS Logo
09:15 - 23:15LCY-SEA
22h 00m2 stops
£415SWISS
Find Deal
Tue, 4 Nov - Thu, 20 Nov
Delta Logo
17:40 - 16:40SEA-LCY
15h 00m1 stop
Delta Logo
10:00 - 16:05LCY-SEA
14h 05m1 stop
£418Delta
Find Deal
Wed, 1 Oct - Fri, 10 Oct
Virgin Atlantic Logo
06:00 - 07:15SEA-LCY
17h 15m2 stops
Virgin Atlantic Logo
18:55 - 11:45LCY-SEA
24h 50m1 stop
£421Virgin Atlantic
Find Deal
Wed, 22 Oct - Mon, 3 Nov
Virgin Atlantic Logo
15:05 - 16:35SEA-LCY
17h 30m1 stop
Virgin Atlantic Logo
20:05 - 11:40LCY-SEA
23h 35m1 stop
£424Virgin Atlantic
Find Deal
Wed, 11 Feb - Tue, 17 Feb
Virgin Atlantic Logo
14:00 - 17:20SEA-LCY
19h 20m1 stop
Virgin Atlantic Logo
09:20 - 22:25LCY-SEA
21h 05m2 stops
£425Virgin Atlantic
Find Deal
Tue, 14 Oct - Tue, 21 Oct
Lufthansa Logo
15:00 - 16:40SEA-LCY
18h 40m1 stop
Lufthansa Logo
18:10 - 13:10LCY-SEA
26h 00m1 stop
£454Lufthansa
Find Deal
Mon, 9 Mar - Wed, 18 Mar
Delta Logo
17:40 - 16:40SEA-LCY
15h 00m1 stop
Delta Logo
09:20 - 16:05LCY-SEA
14h 45m1 stop
£455Delta
Find Deal
Thu, 2 Oct - Tue, 14 Oct
Lufthansa Logo
14:00 - 16:40SEA-LCY
18h 40m1 stop
Lufthansa Logo
18:15 - 12:10LCY-SEA
25h 55m1 stop
£456Lufthansa
Find Deal
Mon, 3 Nov - Thu, 20 Nov

Delta flights from Seattle to London City Airport

Our best Delta deals on Seattle to London City Airport flight tickets
Delta
1 Oct
SEA17:40Seattle/Tacoma Intl
15h 00m
1 stop
LCY16:40London City
10 Oct
LCY10:00London City
14h 05m
1 stop
SEA16:05Seattle/Tacoma Intl
£418
Find similar
Delta
2 Oct
SEA17:40Seattle/Tacoma Intl
15h 00m
1 stop
LCY16:40London City
14 Oct
LCY09:20London City
14h 45m
1 stop
SEA16:05Seattle/Tacoma Intl
£455
Find similar
Delta
17 Nov
SEA15:00Seattle/Tacoma Intl
17h 35m
1 stop
LCY16:35London City
27 Nov
LCY10:00London City
33h 45m
1 stop
SEA11:45Seattle/Tacoma Intl
£466
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
22 Oct
SEA06:00Seattle/Tacoma Intl
17h 15m
2 stops
LCY07:15London City
3 Nov
LCY18:55London City
24h 50m
1 stop
SEA11:45Seattle/Tacoma Intl
£421
Find similar
Virgin Atlantic
11 Feb
SEA15:05Seattle/Tacoma Intl
17h 30m
1 stop
LCY16:35London City
17 Feb
LCY20:05London City
23h 35m
1 stop
SEA11:40Seattle/Tacoma Intl
£424
Find similar
Virgin Atlantic
14 Oct
SEA14:00Seattle/Tacoma Intl
19h 20m
1 stop
LCY17:20London City
21 Oct
LCY09:20London City
21h 05m
2 stops
SEA22:25Seattle/Tacoma Intl
£425
Find similar

momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 16 September 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

Wed 4/3

11:05-12:50

2 stops17h 45m

London City

Tue 10/3

09:15-22:16

2 stops20h 01m

£405

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 1/10

13:00-08:50

2 stops35h 50m

London City

Tue 14/10

09:25-18:36

2 stops17h 11m

£411

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 4/11

15:37-17:05

2 stops17h 28m

London City

Thu 20/11

09:15-23:15

2 stops22h 00m

£415

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 1/10

17:40-16:40

1 stop15h 00m

London City

Fri 10/10

10:00-16:05

1 stop14h 05m

£418

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 22/10

06:00-07:15

2 stops17h 15m

London City

Mon 3/11

18:55-11:45

1 stop24h 50m

£421

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 11/2

15:05-16:35

1 stop17h 30m

London City

Tue 17/2

20:05-11:40

1 stop23h 35m

£424

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 14/10

14:00-17:20

1 stop19h 20m

London City

Tue 21/10

09:20-22:25

2 stops21h 05m

£425

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 9/3

15:00-16:40

1 stop18h 40m

London City

Wed 18/3

18:10-13:10

1 stop26h 00m

£454

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Thu 2/10

17:40-16:40

1 stop15h 00m

London City

Tue 14/10

09:20-16:05

1 stop14h 45m

£455

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 3/11

14:00-16:40

1 stop18h 40m

London City

Thu 20/11

18:15-12:10

1 stop25h 55m

£456

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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, 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 return 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?

    There are 4785.6 mi between Seattle/Tacoma Intl and London City. A reasonable flight in good conditions will take 15h 00m.

  • 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?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Luton
Milton Keynes
Maidstone
Gatwick
Slough
Canterbury
Southend-on-Sea
Ipswich
Ilford
Guildford
Colchester
Worthing
Chelmsford
Dover
Hayes
Dartford
Winchester
Hounslow
Stansted

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Seattle.

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 in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Seattle.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Seattle and alert you when they change.

An easier way to manage your London City Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 16/10
Thu 23/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London