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Cheap flights from London City Airport to Seattle from £400

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 18/11. 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

Find the cheapest flights from London City Airport to Seattle

Cheap return flights

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
09:20 - 16:35
LCY
-
SEA
15h 15m
1 stop
Virgin Atlantic Logo
06:00 - 08:10
SEA
-
LCY
19h 10m
2 stops
£517Virgin Atlantic
Wed, 14 Oct - Wed, 28 Oct
Virgin Atlantic Logo
09:20 - 16:35
LCY
-
SEA
15h 15m
1 stop
Virgin Atlantic Logo
06:00 - 07:15
SEA
-
LCY
18h 15m
2 stops
£517Virgin Atlantic
Wed, 14 Oct - Wed, 28 Oct
Virgin Atlantic Logo
20:05 - 20:27
LCY
-
SEA
31h 22m
2 stops
Virgin Atlantic Logo
06:00 - 08:10
SEA
-
LCY
18h 10m
2 stops
£524Virgin Atlantic
Wed, 28 Oct - Thu, 5 Nov
Virgin Atlantic Logo
09:20 - 23:59
LCY
-
SEA
22h 39m
2 stops
Virgin Atlantic Logo
06:00 - 07:15
SEA
-
LCY
18h 15m
2 stops
£525Virgin Atlantic
Wed, 14 Oct - Wed, 28 Oct
Delta Logo
09:20 - 11:50
LCY
-
SEA
34h 30m
1 stop
Delta Logo
06:05 - 08:10
SEA
-
LCY
18h 05m
2 stops
£528Delta
Wed, 23 Dec - Fri, 1 Jan
Delta Logo
10:30 - 11:50
LCY
-
SEA
33h 20m
1 stop
Delta Logo
14:25 - 16:35
SEA
-
LCY
18h 10m
1 stop
£528Delta
Mon, 28 Dec - Thu, 7 Jan
Delta Logo
10:00 - 11:50
LCY
-
SEA
33h 50m
1 stop
Delta Logo
14:25 - 16:35
SEA
-
LCY
18h 10m
1 stop
£528Delta
Tue, 29 Dec - Thu, 7 Jan
Delta Logo
09:20 - 11:50
LCY
-
SEA
34h 30m
1 stop
Delta Logo
14:25 - 16:35
SEA
-
LCY
18h 10m
1 stop
£528Delta
Wed, 23 Dec - Tue, 5 Jan
Delta Logo
09:20 - 11:50
LCY
-
SEA
34h 30m
1 stop
Delta Logo
14:25 - 16:35
SEA
-
LCY
18h 10m
1 stop
£528Delta
Wed, 23 Dec - Thu, 7 Jan
Delta Logo
10:30 - 11:50
LCY
-
SEA
33h 20m
1 stop
Delta Logo
14:25 - 16:35
SEA
-
LCY
18h 10m
1 stop
£528Delta
Mon, 28 Dec - Wed, 6 Jan

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Virgin Atlantic flights from London City Airport to Seattle

Our best Virgin Atlantic deals on London City Airport to Seattle flight tickets
Virgin Atlantic
14 Oct
LCY09:20London City
15h 15m
1 stop
SEA16:35Seattle/Tacoma Intl
28 Oct
SEA06:00Seattle/Tacoma Intl
19h 10m
2 stops
LCY08:10London City
£517
Virgin Atlantic
28 Oct
LCY20:05London City
31h 22m
2 stops
SEA20:27Seattle/Tacoma Intl
5 Nov
SEA06:00Seattle/Tacoma Intl
18h 10m
2 stops
LCY08:10London City
£524
Virgin Atlantic
14 Oct
LCY09:20London City
22h 39m
2 stops
SEA23:59Seattle/Tacoma Intl
28 Oct
SEA06:00Seattle/Tacoma Intl
18h 15m
2 stops
LCY07:15London City
£525

SWISS flights from London City Airport to Seattle

Our best SWISS deals on London City Airport to Seattle flight tickets
SWISS
4 Sept
LCY19:15London City
31h 52m
2 stops
SEA19:07Seattle/Tacoma Intl
6 Sept
SEA15:30Seattle/Tacoma Intl
42h 00m
2 stops
LCY17:30London City
£568
SWISS
13 Aug
LCY09:15London City
17h 17m
2 stops
SEA18:32Seattle/Tacoma Intl
25 Aug
SEA10:40Seattle/Tacoma Intl
22h 45m
2 stops
LCY17:25London City
£747
SWISS
5 Aug
LCY09:15London City
17h 17m
2 stops
SEA18:32Seattle/Tacoma Intl
19 Aug
SEA10:40Seattle/Tacoma Intl
22h 45m
2 stops
LCY17:25London City
£830

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 2 August 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 14/10

09:20-16:35

1 stop15h 15m

Seattle/Tacoma Intl

Wed 28/10

06:00-08:10

2 stops19h 10m

£517
Fastest return journey

LondonSeattle

LCY - SEA

LCYSEA

London City

Wed 14/10

09:20-16:35

1 stop15h 15m

Seattle/Tacoma Intl

Wed 28/10

06:00-07:15

2 stops18h 15m

£517

LondonSeattle

LCY - SEA

LCYSEA

London City

Wed 28/10

20:05-20:27

2 stops31h 22m

Seattle/Tacoma Intl

Thu 5/11

06:00-08:10

2 stops18h 10m

£524

LondonSeattle

LCY - SEA

LCYSEA

London City

Wed 14/10

09:20-23:59

2 stops22h 39m

Seattle/Tacoma Intl

Wed 28/10

06:00-07:15

2 stops18h 15m

£525

LondonSeattle

LCY - SEA

LCYSEA

London City

Wed 23/12

09:20-11:50

1 stop34h 30m

Seattle/Tacoma Intl

Fri 1/1

06:05-08:10

2 stops18h 05m

£528

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 28/12

10:30-11:50

1 stop33h 20m

Seattle/Tacoma Intl

Thu 7/1

14:25-16:35

1 stop18h 10m

£528

LondonSeattle

LCY - SEA

LCYSEA

London City

Tue 29/12

10:00-11:50

1 stop33h 50m

Seattle/Tacoma Intl

Thu 7/1

14:25-16:35

1 stop18h 10m

£528

LondonSeattle

LCY - SEA

LCYSEA

London City

Wed 23/12

09:20-11:50

1 stop34h 30m

Seattle/Tacoma Intl

Tue 5/1

14:25-16:35

1 stop18h 10m

£528

LondonSeattle

LCY - SEA

LCYSEA

London City

Wed 23/12

09:20-11:50

1 stop34h 30m

Seattle/Tacoma Intl

Thu 7/1

14:25-16:35

1 stop18h 10m

£528

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 28/12

10:30-11:50

1 stop33h 20m

Seattle/Tacoma Intl

Wed 6/1

14:25-16:35

1 stop18h 10m

£528

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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, Thursday is the cheapest day to fly to Seattle from London City Airport. The lowest ticket price found for a Thursday 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 £670.

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 £589. 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 morning are often more expensive, with an average ticket price of £633.

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

12h 25m

Direct flights

None
The fastest flight from London City Airport to Seattle takes 12h 25m
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. 12h 25m 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
Westport
Kirkland
Ashford
Tacoma
SeaTac
Tukwila
Fife

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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