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Cheap flights from Seattle to London City Airport from £310

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LCY
21 May — 28 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to London City

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to London City
Explore the most affordable flight options available from Seattle to London City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 April 2026.

Tue 25/807:00
SEA
-
LCY
2 stops27h 40m
SWISS
Thu 27/809:15
LCY
-
SEA
2 stops22h 09m
SWISS
Deal found 18/4£617
Mon 24/815:33
SEA
-
LCY
2 stops19h 07m
SWISS
Wed 26/818:00
LCY
-
SEA
2 stops32h 59m
SWISS
Deal found 18/4£654
Tue 25/814:10
SEA
-
LCY
1 stop19h 45m
Lufthansa
Thu 27/809:15
LCY
-
SEA
2 stops18h 48m
Lufthansa
Deal found 18/4£665
Mon 24/815:33
SEA
-
LCY
2 stops37h 02m
SWISS
Thu 27/809:15
LCY
-
SEA
2 stops21h 27m
SWISS
Deal found 18/4£678
Tue 25/813:50
SEA
-
LCY
1 stop19h 30m
Virgin Atlantic
Mon 31/820:15
LCY
-
SEA
1 stop23h 32m
Virgin Atlantic
Deal found 16/4£689
Tue 18/813:50
SEA
-
LCY
1 stop11h 40m
Delta
Wed 30/908:25
LCY
-
SEA
1 stop16h 10m
Delta
Deal found 20/4£689
Tue 18/813:50
SEA
-
LCY
1 stop20h 40m
Virgin Atlantic
Thu 27/809:20
LCY
-
SEA
2 stops19h 28m
Virgin Atlantic
Deal found 17/4£690
Mon 5/1010:30
SEA
-
LCY
2 stops18h 05m
SWISS
Wed 14/1009:15
LCY
-
SEA
2 stops17h 17m
SWISS
Deal found 17/4£691
Mon 14/914:10
SEA
-
LCY
1 stop19h 45m
Lufthansa
Tue 22/909:15
LCY
-
SEA
2 stops17h 17m
Lufthansa
Deal found 20/4£693
Tue 15/913:19
SEA
-
LCY
2 stops20h 06m
SWISS
Wed 23/909:15
LCY
-
SEA
2 stops17h 17m
SWISS
Deal found 19/4£694
Tue 18/810:45
SEA
-
LCY
2 stops22h 40m
SWISS
Tue 25/809:15
LCY
-
SEA
2 stops17h 17m
SWISS
Deal found 16/4£695
Sun 30/810:45
SEA
-
LCY
2 stops22h 40m
SWISS
Wed 16/909:15
LCY
-
SEA
2 stops17h 17m
SWISS
Deal found 18/4£697

Find flight deals from Seattle to London City

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to London City (LCY). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 21 April 2026.

Round-trip from

£617

One-way from

£310

Popular in

June

Cheapest in

January

Average price

£524
SWISS
  • SWISS
  • 25/8-27/8
  • 4 total stops
  • 49h 49m total
  • Seattle to London
Search Deals
2/10
  • 2/10
  • 3 total stops
  • 34h 10m total
  • Seattle to London
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£91 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Seattle to London City 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, Cheapflights users made 858,174 searches. Data last updated 21 April 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 return flight
Fastest return journey

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 4/8

13:50-09:30

1 stop11h 40m

London City

Wed 19/8

10:00-16:27

1 stop14h 27m

£691

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 4/5

13:45-09:30

1 stop11h 45m

London City

Tue 19/5

10:00-16:30

1 stop14h 30m

£762

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 11/5

10:52-12:35

2 stops17h 43m

London City

Wed 21/10

09:15-18:32

2 stops17h 17m

£768

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 4/5

07:00-12:35

2 stops21h 35m

London City

Tue 19/5

09:15-22:47

2 stops21h 32m

£775

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 17/8

07:00-12:35

2 stops21h 35m

London City

Wed 2/9

09:15-18:32

2 stops17h 17m

£815

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Sun 16/8

13:50-09:30

1 stop11h 40m

London City

Tue 1/9

10:00-16:35

1 stop14h 35m

£848

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 13/5

13:45-09:30

1 stop11h 45m

London City

Wed 20/5

10:00-16:30

1 stop14h 30m

£856

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 18/5

13:45-17:20

1 stop19h 35m

London City

Tue 2/6

09:20-20:28

2 stops19h 08m

£858

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Thu 10/9

13:50-09:30

1 stop11h 40m

London City

Sat 19/9

10:00-16:35

1 stop14h 35m

£886

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 17/8

13:50-09:30

1 stop11h 40m

London City

Tue 25/8

09:20-16:27

1 stop15h 07m

£892

Flights are sorted by cheapest return flights first.

Deals found on 16/4

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from Seattle to London City

Have a flexible travel schedule? Discover the best time to fly to London City from Seattle with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Seattle to London City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to London City?

    For a flight from Seattle to London City, you will be flying from Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 0 outbound flights to London City per day. 0 airlines have flights to London City from Seattle/Tacoma Intl on a regular basis.

  • How long is the flight from Seattle to London City Airport?

    For as low as £691, Delta can have you in London City Airport from Seattle in 11h 40m. The distance from Seattle to London City Airport is about 4794 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from Seattle to London City that include hotel bookings?

    Yes. In addition to deals on Seattle to London City flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Seattle to London City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to London City.

  • Can I find deals for business class flights from Seattle to London City?

    Yes. Cheapflights offers flight deals from Seattle to London City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near London City Airport?

Book flights to London City Airport if you plan to visit one of these locations
Milton Keynes
Wembley
Croydon
Hounslow
Luton
Gatwick
Ilford
Slough
Hayes
Brentford
Colchester
Watford
Kingston upon Thames
Romford
Eastbourne
Ipswich
Southend-on-Sea
Guildford
Bishop's Stortford
Chelmsford

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How does Cheapflights help users find flights from Seattle to London City?

When you search for this flight from Seattle to London City, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Seattle to London City?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Seattle to London City for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Seattle to London City with no change fees?

Certainly. Search results for flights to London City from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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