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Cheap flights from London City Airport to Seattle from £368

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London City Airport to Seattle departing on 11/5. 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
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Find the cheapest flights from London City Airport to Seattle

Cheap return flights

Enter your travel dates to find the best prices.
SWISS Logo
09:15 - 22:42
LCY
-
SEA
21h 27m
2 stops
SWISS Logo
13:21 - 17:30
SEA
-
LCY
20h 09m
2 stops
£581SWISS
Wed, 15 Apr - Thu, 30 Apr
SWISS Logo
09:15 - 23:27
LCY
-
SEA
22h 12m
2 stops
SWISS Logo
07:00 - 12:35
SEA
-
LCY
21h 35m
2 stops
£583SWISS
Mon, 20 Apr - Mon, 4 May
SWISS Logo
09:15 - 23:27
LCY
-
SEA
22h 12m
2 stops
SWISS Logo
13:21 - 17:30
SEA
-
LCY
20h 09m
2 stops
£584SWISS
Mon, 20 Apr - Mon, 4 May
Multiple Airlines Logo
09:15 - 21:53
LCY
-
SEA
44h 38m
2 stops
Multiple Airlines Logo
10:30 - 17:55
SEA
-
LCY
23h 25m
2 stops
£589Multiple Airlines
Mon, 20 Apr - Mon, 4 May
SWISS Logo
09:15 - 23:27
LCY
-
SEA
22h 12m
2 stops
SWISS Logo
07:00 - 12:35
SEA
-
LCY
21h 35m
2 stops
£592SWISS
Mon, 20 Apr - Mon, 4 May
SWISS Logo
09:15 - 23:27
LCY
-
SEA
22h 12m
2 stops
SWISS Logo
13:21 - 17:30
SEA
-
LCY
20h 09m
2 stops
£593SWISS
Mon, 20 Apr - Mon, 4 May
SWISS Logo
19:15 - 22:42
LCY
-
SEA
35h 27m
2 stops
SWISS Logo
07:00 - 12:35
SEA
-
LCY
21h 35m
2 stops
£594SWISS
Mon, 13 Apr - Mon, 27 Apr
SWISS Logo
09:15 - 22:42
LCY
-
SEA
21h 27m
2 stops
SWISS Logo
10:48 - 12:35
SEA
-
LCY
17h 47m
2 stops
£595SWISS
Tue, 14 Apr - Tue, 28 Apr
SWISS Logo
19:15 - 19:00
LCY
-
SEA
31h 45m
2 stops
SWISS Logo
10:48 - 12:35
SEA
-
LCY
17h 47m
2 stops
£600SWISS
Tue, 14 Apr - Tue, 21 Apr
SWISS Logo
09:15 - 22:42
LCY
-
SEA
21h 27m
2 stops
SWISS Logo
07:00 - 12:35
SEA
-
LCY
21h 35m
2 stops
£600SWISS
Mon, 13 Apr - Mon, 27 Apr

SWISS flights from London City Airport to Seattle

Our best SWISS deals on London City Airport to Seattle flight tickets
SWISS
15 Apr
LCY09:15London City
21h 27m
2 stops
SEA22:42Seattle/Tacoma Intl
30 Apr
SEA13:21Seattle/Tacoma Intl
20h 09m
2 stops
LCY17:30London City
£581
SWISS
20 Apr
LCY09:15London City
22h 12m
2 stops
SEA23:27Seattle/Tacoma Intl
4 May
SEA07:00Seattle/Tacoma Intl
21h 35m
2 stops
LCY12:35London City
£583
SWISS
20 Apr
LCY09:15London City
22h 12m
2 stops
SEA23:27Seattle/Tacoma Intl
4 May
SEA13:21Seattle/Tacoma Intl
20h 09m
2 stops
LCY17:30London City
£584

Lufthansa flights from London City Airport to Seattle

Our best Lufthansa deals on London City Airport to Seattle flight tickets
Lufthansa
14 Apr
LCY18:30London City
25h 50m
1 stop
SEA12:20Seattle/Tacoma Intl
21 Apr
SEA14:10Seattle/Tacoma Intl
19h 45m
1 stop
LCY17:55London City
£639
Lufthansa
20 Apr
LCY18:30London City
25h 50m
1 stop
SEA12:20Seattle/Tacoma Intl
4 May
SEA14:10Seattle/Tacoma Intl
19h 45m
1 stop
LCY17:55London City
£641
Lufthansa
20 Apr
LCY18:30London City
25h 50m
1 stop
SEA12:20Seattle/Tacoma Intl
4 May
SEA14:10Seattle/Tacoma Intl
19h 45m
1 stop
LCY17:55London City
£642

momondo Fare Finder

 
Customise your flight search to find flights from London City Airport to Seattle 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 11 March 2026.
Use the filters below to find and compare flights from London City Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSeattle

LCY - SEA

LCYSEA

London City

Wed 15/4

09:15-22:42

2 stops21h 27m

Seattle/Tacoma Intl

Thu 30/4

13:21-17:30

2 stops20h 09m

£581

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 20/4

09:15-23:27

2 stops22h 12m

Seattle/Tacoma Intl

Mon 4/5

07:00-12:35

2 stops21h 35m

£583

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 20/4

09:15-23:27

2 stops22h 12m

Seattle/Tacoma Intl

Mon 4/5

13:21-17:30

2 stops20h 09m

£584

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 20/4

09:15-21:53

2 stops44h 38m

Seattle/Tacoma Intl

Mon 4/5

10:30-17:55

2 stops23h 25m

£589

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 20/4

09:15-23:27

2 stops22h 12m

Seattle/Tacoma Intl

Mon 4/5

07:00-12:35

2 stops21h 35m

£592

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 20/4

09:15-23:27

2 stops22h 12m

Seattle/Tacoma Intl

Mon 4/5

13:21-17:30

2 stops20h 09m

£593

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 13/4

19:15-22:42

2 stops35h 27m

Seattle/Tacoma Intl

Mon 27/4

07:00-12:35

2 stops21h 35m

£594
Fastest return journey

LondonSeattle

LCY - SEA

LCYSEA

London City

Tue 14/4

09:15-22:42

2 stops21h 27m

Seattle/Tacoma Intl

Tue 28/4

10:48-12:35

2 stops17h 47m

£595

LondonSeattle

LCY - SEA

LCYSEA

London City

Tue 14/4

19:15-19:00

2 stops31h 45m

Seattle/Tacoma Intl

Tue 21/4

10:48-12:35

2 stops17h 47m

£600

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 13/4

09:15-22:42

2 stops21h 27m

Seattle/Tacoma Intl

Mon 27/4

07:00-12:35

2 stops21h 35m

£600

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Seattle from

How to get the cheapest flight ticket from London City Airport to Seattle

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 day to depart on your flight to Seattle?

According to our data, Wednesday is the cheapest day to fly to Seattle from London City Airport. The lowest ticket price found for a Wednesday departure recently was £587. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Seattle on Sunday is £658.

What is the cheapest time of day to depart on your flight to Seattle?

According to our data, the cheapest time of day to fly to Seattle is in the morning. momondo users have found flights departing from London City Airport to Seattle in the morning for as low as £613. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive, with an average ticket price of £620.

When to book flights from London City Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from London City Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London City Airport to Seattle (LCY to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London City Airport to Seattle

Fastest flight time

13h 35m

Direct flights

None
The fastest flight from London City Airport to Seattle takes 13h 35m
There are no direct flights from London City Airport to Seattle. There are no popular flight routes from London City Airport to Seattle.
Search flight deals

  • How far is London City to Seattle/Tacoma Intl by plane?

    Seattle/Tacoma Intl is 4785.6 mi away from London City. 13h 35m is a normal flight duration for this route.

  • When did momondo last update prices for flights from London City Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from London City Airport to Seattle/Tacoma Intl Airport were last updated today.

  • How old do you have to be to fly from London City Airport to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London City Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl 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 Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Fife
SeaTac
Tukwila

Why use momondo?

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

It is quick and easy to find London to Seattle flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seattle that suits you.

Can I find flights from London to Seattle with flexible booking policies on momondo?

Flights from London to Seattle with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from London to Seattle?

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 Seattle from London.

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

Price alerts on flights to Seattle from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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