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Cheap flights from London City Airport to Seattle from £409

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 15/9. 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 London City Airport to Seattle

Cheap return flights

Enter your travel dates to find the best prices.
KLM Logo
09:20 - 16:35
LCY
-
SEA
15h 15m
1 stop
KLM Logo
13:50 - 09:30
SEA
-
LCY
11h 40m
1 stop
£602KLM
Mon, 7 Sep - Wed, 16 Sep
Virgin Atlantic Logo
09:20 - 16:35
LCY
-
SEA
15h 15m
1 stop
Virgin Atlantic Logo
13:50 - 09:30
SEA
-
LCY
11h 40m
1 stop
£609Virgin Atlantic
Thu, 3 Sep - Fri, 18 Sep
KLM Logo
10:00 - 16:35
LCY
-
SEA
14h 35m
1 stop
KLM Logo
13:50 - 09:30
SEA
-
LCY
11h 40m
1 stop
£610KLM
Mon, 7 Sep - Wed, 16 Sep
Virgin Atlantic Logo
09:20 - 16:35
LCY
-
SEA
15h 15m
1 stop
Virgin Atlantic Logo
13:50 - 09:30
SEA
-
LCY
11h 40m
1 stop
£615Virgin Atlantic
Thu, 3 Sep - Fri, 18 Sep
KLM Logo
10:00 - 16:39
LCY
-
SEA
14h 39m
1 stop
KLM Logo
09:30 - 08:50
SEA
-
LCY
15h 20m
2 stops
£616KLM
Thu, 8 Oct - Thu, 15 Oct
Delta Logo
10:00 - 16:30
LCY
-
SEA
14h 30m
1 stop
Delta Logo
17:45 - 16:40
SEA
-
LCY
14h 55m
1 stop
£616Delta
Thu, 28 May - Wed, 10 Jun
Delta Logo
08:25 - 16:30
LCY
-
SEA
16h 05m
1 stop
Delta Logo
17:45 - 16:40
SEA
-
LCY
14h 55m
1 stop
£617Delta
Thu, 28 May - Wed, 10 Jun
Virgin Atlantic Logo
17:50 - 11:52
LCY
-
SEA
26h 02m
1 stop
Virgin Atlantic Logo
07:20 - 09:30
SEA
-
LCY
18h 10m
2 stops
£621Virgin Atlantic
Tue, 13 Oct - Tue, 20 Oct
Virgin Atlantic Logo
08:25 - 16:30
LCY
-
SEA
16h 05m
1 stop
Virgin Atlantic Logo
05:30 - 08:50
SEA
-
LCY
19h 20m
2 stops
£621Virgin Atlantic
Thu, 28 May - Thu, 4 Jun
KLM Logo
12:10 - 16:35
LCY
-
SEA
12h 25m
1 stop
KLM Logo
13:45 - 09:30
SEA
-
LCY
11h 45m
1 stop
£622KLM
Sat, 26 Sep - Thu, 22 Oct

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KLM flights from London City Airport to Seattle

Our best KLM deals on London City Airport to Seattle flight tickets
KLM
7 Sept
LCY09:20London City
15h 15m
1 stop
SEA16:35Seattle/Tacoma Intl
16 Sept
SEA13:50Seattle/Tacoma Intl
11h 40m
1 stop
LCY09:30London City
£602
KLM
7 Sept
LCY10:00London City
14h 35m
1 stop
SEA16:35Seattle/Tacoma Intl
16 Sept
SEA13:50Seattle/Tacoma Intl
11h 40m
1 stop
LCY09:30London City
£610
KLM
8 Oct
LCY10:00London City
14h 39m
1 stop
SEA16:39Seattle/Tacoma Intl
15 Oct
SEA09:30Seattle/Tacoma Intl
15h 20m
2 stops
LCY08:50London City
£616

Delta flights from London City Airport to Seattle

Our best Delta deals on London City Airport to Seattle flight tickets
Delta
28 May
LCY10:00London City
14h 30m
1 stop
SEA16:30Seattle/Tacoma Intl
10 Jun
SEA17:45Seattle/Tacoma Intl
14h 55m
1 stop
LCY16:40London City
£616
Delta
28 May
LCY08:25London City
16h 05m
1 stop
SEA16:30Seattle/Tacoma Intl
10 Jun
SEA17:45Seattle/Tacoma Intl
14h 55m
1 stop
LCY16:40London City
£617
Delta
1 Jun
LCY10:00London City
14h 24m
1 stop
SEA16:24Seattle/Tacoma Intl
11 Jun
SEA17:45Seattle/Tacoma Intl
14h 55m
1 stop
LCY16:40London City
£623

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 3 May 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

Mon 7/9

09:20-16:35

1 stop15h 15m

Seattle/Tacoma Intl

Wed 16/9

13:50-09:30

1 stop11h 40m

£602

LondonSeattle

LCY - SEA

LCYSEA

London City

Thu 3/9

09:20-16:35

1 stop15h 15m

Seattle/Tacoma Intl

Fri 18/9

13:50-09:30

1 stop11h 40m

£609

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 7/9

10:00-16:35

1 stop14h 35m

Seattle/Tacoma Intl

Wed 16/9

13:50-09:30

1 stop11h 40m

£610

LondonSeattle

LCY - SEA

LCYSEA

London City

Thu 3/9

09:20-16:35

1 stop15h 15m

Seattle/Tacoma Intl

Fri 18/9

13:50-09:30

1 stop11h 40m

£615

LondonSeattle

LCY - SEA

LCYSEA

London City

Thu 8/10

10:00-16:39

1 stop14h 39m

Seattle/Tacoma Intl

Thu 15/10

09:30-08:50

2 stops15h 20m

£616

LondonSeattle

LCY - SEA

LCYSEA

London City

Thu 28/5

10:00-16:30

1 stop14h 30m

Seattle/Tacoma Intl

Wed 10/6

17:45-16:40

1 stop14h 55m

£616

LondonSeattle

LCY - SEA

LCYSEA

London City

Thu 28/5

08:25-16:30

1 stop16h 05m

Seattle/Tacoma Intl

Wed 10/6

17:45-16:40

1 stop14h 55m

£617

LondonSeattle

LCY - SEA

LCYSEA

London City

Tue 13/10

17:50-11:52

1 stop26h 02m

Seattle/Tacoma Intl

Tue 20/10

07:20-09:30

2 stops18h 10m

£621

LondonSeattle

LCY - SEA

LCYSEA

London City

Thu 28/5

08:25-16:30

1 stop16h 05m

Seattle/Tacoma Intl

Thu 4/6

05:30-08:50

2 stops19h 20m

£621
Fastest return journey

LondonSeattle

LCY - SEA

LCYSEA

London City

Sat 26/9

12:10-16:35

1 stop12h 25m

Seattle/Tacoma Intl

Thu 22/10

13:45-09:30

1 stop11h 45m

£622

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 £594. 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 £666.

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 at midday. momondo users have found flights departing from London City Airport to Seattle at midday for as low as £600. 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 £628.

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

14h 10m

Direct flights

None
The fastest flight from London City Airport to Seattle takes 14h 10m
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

Frequently asked questions about flying from London City Airport to Seattle

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

    Seattle/Tacoma Intl is 4785.6 mi away from London City. 14h 10m 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
Kirkland
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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