Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to London from $389

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 11/3. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize 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 round-trip flights

Multiple Airlines Logo
11:05 am - 12:50 pmSEA-LCY
17h 45m2 stops
Multiple Airlines Logo
9:15 am - 10:16 pmLCY-SEA
20h 01m2 stops
$551Multiple Airlines
Find Deal
Wed, Mar 4 - Tue, Mar 10
Multiple Airlines Logo
8:10 am - 5:05 pmSEA-LCY
24h 55m2 stops
Multiple Airlines Logo
9:15 am - 10:16 pmLCY-SEA
20h 01m2 stops
$557Multiple Airlines
Find Deal
Wed, Mar 4 - Tue, Mar 10
SWISS Logo
3:28 pm - 5:30 pmSEA-LCY
18h 02m2 stops
SWISS Logo
9:25 am - 6:36 pmLCY-SEA
17h 11m2 stops
$562SWISS
Find Deal
Tue, Oct 14 - Tue, Oct 21
SWISS Logo
3:37 pm - 5:05 pmSEA-LCY
17h 28m2 stops
SWISS Logo
7:10 pm - 8:51 pmLCY-SEA
33h 41m2 stops
$564SWISS
Find Deal
Tue, Nov 4 - Mon, Nov 17
Delta Logo
5:40 pm - 4:40 pmSEA-LCY
15h 00m1 stop
Delta Logo
7:45 am - 4:05 pmLCY-SEA
16h 20m1 stop
$568Delta
Find Deal
Sun, Sep 28 - Tue, Oct 14
SWISS Logo
11:05 am - 12:50 pmSEA-LCY
17h 45m2 stops
SWISS Logo
9:25 am - 9:29 pmLCY-SEA
20h 04m2 stops
$569SWISS
Find Deal
Tue, Feb 24 - Fri, Mar 6
Virgin Atlantic Logo
6:00 am - 7:15 amSEA-LCY
17h 15m2 stops
Virgin Atlantic Logo
6:55 pm - 11:45 amLCY-SEA
24h 50m1 stop
$572Virgin Atlantic
Find Deal
Wed, Oct 22 - Mon, Nov 3
Virgin Atlantic Logo
7:20 am - 7:15 amSEA-LCY
15h 55m2 stops
Virgin Atlantic Logo
8:05 pm - 11:45 amLCY-SEA
23h 40m1 stop
$573Virgin Atlantic
Find Deal
Sun, Nov 9 - Wed, Nov 19
KLM Logo
3:05 pm - 4:35 pmSEA-LCY
17h 30m1 stop
KLM Logo
5:50 pm - 12:35 pmLCY-SEA
25h 45m1 stop
$576KLM
Find Deal
Wed, Mar 4 - Tue, Mar 10
Delta Logo
5:40 pm - 4:40 pmSEA-LCY
15h 00m1 stop
Delta Logo
9:20 am - 4:05 pmLCY-SEA
14h 45m1 stop
$618Delta
Find Deal
Thu, Oct 9 - Tue, Oct 21

Virgin Atlantic flights from Seattle to London City Airport

Our best Virgin Atlantic deals on Seattle to London City Airport flight tickets
Virgin Atlantic
Oct 22
SEA6:00 amSeattle/Tacoma Intl
17h 15m
2 stops
LCY7:15 amLondon City
Nov 3
LCY6:55 pmLondon City
24h 50m
1 stop
SEA11:45 amSeattle/Tacoma Intl
$572
Find similar
Virgin Atlantic
Nov 9
SEA7:20 amSeattle/Tacoma Intl
15h 55m
2 stops
LCY7:15 amLondon City
Nov 19
LCY8:05 pmLondon City
23h 40m
1 stop
SEA11:45 amSeattle/Tacoma Intl
$573
Find similar
Virgin Atlantic
Oct 14
SEA2:00 pmSeattle/Tacoma Intl
19h 20m
1 stop
LCY5:20 pmLondon City
Oct 21
LCY9:20 amLondon City
21h 05m
2 stops
SEA10:25 pmSeattle/Tacoma Intl
$578
Find similar

Delta flights from Seattle to London City Airport

Our best Delta deals on Seattle to London City Airport flight tickets
Delta
Sep 28
SEA5:40 pmSeattle/Tacoma Intl
15h 00m
1 stop
LCY4:40 pmLondon City
Oct 14
LCY7:45 amLondon City
16h 20m
1 stop
SEA4:05 pmSeattle/Tacoma Intl
$568
Find similar
Delta
Oct 9
SEA5:40 pmSeattle/Tacoma Intl
15h 00m
1 stop
LCY4:40 pmLondon City
Oct 21
LCY9:20 amLondon City
14h 45m
1 stop
SEA4:05 pmSeattle/Tacoma Intl
$618
Find similar
Delta
Nov 18
SEA3:00 pmSeattle/Tacoma Intl
17h 35m
1 stop
LCY4:35 pmLondon City
Nov 27
LCY8:40 amLondon City
35h 05m
1 stop
SEA11:45 amSeattle/Tacoma Intl
$633
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated September 17, 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 3/4

11:05 am-12:50 pm

2 stops17h 45m

London City

Tue 3/10

9:15 am-10:16 pm

2 stops20h 01m

$551

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 3/4

8:10 am-5:05 pm

2 stops24h 55m

London City

Tue 3/10

9:15 am-10:16 pm

2 stops20h 01m

$557

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 10/14

3:28 pm-5:30 pm

2 stops18h 02m

London City

Tue 10/21

9:25 am-6:36 pm

2 stops17h 11m

$562

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 11/4

3:37 pm-5:05 pm

2 stops17h 28m

London City

Mon 11/17

7:10 pm-8:51 pm

2 stops33h 41m

$564

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Sun 9/28

5:40 pm-4:40 pm

1 stop15h 00m

London City

Tue 10/14

7:45 am-4:05 pm

1 stop16h 20m

$568

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 2/24

11:05 am-12:50 pm

2 stops17h 45m

London City

Fri 3/6

9:25 am-9:29 pm

2 stops20h 04m

$569

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 10/22

6:00 am-7:15 am

2 stops17h 15m

London City

Mon 11/3

6:55 pm-11:45 am

1 stop24h 50m

$572

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Sun 11/9

7:20 am-7:15 am

2 stops15h 55m

London City

Wed 11/19

8:05 pm-11:45 am

1 stop23h 40m

$573

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 3/4

3:05 pm-4:35 pm

1 stop17h 30m

London City

Tue 3/10

5:50 pm-12:35 pm

1 stop25h 45m

$576

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Thu 10/9

5:40 pm-4:40 pm

1 stop15h 00m

London City

Tue 10/21

9:20 am-4:05 pm

1 stop14h 45m

$618

Flights are sorted by cheapest round-trip 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 round-trip 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?

    The distance between Seattle/Tacoma Intl and London City is about 4785.6 mi. In terms of flight time, this usually takes a little over 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 many operators does momondo search for flights from Seattle/Tacoma Intl Airport to London City Airport?

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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.

  • What is the most popular airline from Seattle to London City Airport?

Best airlines flying from Seattle to London City Airport

Compare and see reviews for airlines that fly from Seattle to London City Airport with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $962Free CancellationRating
7.4
1,486 reviews
Search Scandinavian Airlines flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Dover
Luton
Slough
Milton Keynes
Hayes
Guildford
Dartford
Crawley
Stansted
Chelmsford
Brentwood
Ilford
Folkestone
Colchester
Watford
Wembley
Richmond
Croydon

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to London. momondo saves you time and could save you money on your trip.

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 for Seattle to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Seattle to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your London City Airport trip

We make it super easy to schedule, organize 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
Fri 10/17
Fri 10/24
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to London Heathrow Airportfrom $373
Flights to London Gatwick Airportfrom $349
Flights to London Stansted Airportfrom $401
Flights to London Luton Airportfrom $404
Flights to Glasgow Intl Airportfrom $374
Flights to Belfast Intl Airportfrom $464
Flights to London Southend Airportfrom $486
Flights to Belfast City Airportfrom $514