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Cheap flights from Seoul to London from $184

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seoul to London departing on 3/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:10 pm - 5:30 pm
ICN
-
LHR
34h 20m1 stop
Multiple Airlines Logo
9:30 pm - 10:15 pm
LHR
-
ICN
15h 45m1 stop
$516Multiple Airlines
Tue, Jan 20 - Fri, Jan 23
China Eastern Logo
2:30 pm - 5:30 pm
ICN
-
LHR
36h 00m1 stop
China Eastern Logo
9:00 pm - 3:20 pm
LHR
-
ICN
33h 20m1 stop
$525China Eastern
Sun, Mar 1 - Thu, Mar 5
China Southern Logo
4:15 pm - 5:00 pm
ICN
-
LHR
33h 45m1 stop
China Southern Logo
10:00 pm - 1:50 pm
LHR
-
ICN
30h 50m1 stop
$528China Southern
Sun, Mar 8 - Sat, Mar 14
Scandinavian Airlines Logo
11:45 pm - 8:55 am
ICN
-
LHR
42h 10m2 stops
Scandinavian Airlines Logo
6:40 am - 7:00 pm
LHR
-
ICN
27h 20m1 stop
$538Scandinavian Airlines
Mon, Mar 2 - Thu, Mar 5
China Eastern Logo
8:55 am - 5:30 pm
ICN
-
LHR
17h 35m1 stop
China Eastern Logo
9:00 pm - 3:05 pm
LHR
-
ICN
33h 05m1 stop
$568China Eastern
Sun, Mar 1 - Fri, Mar 6
Scandinavian Airlines Logo
11:45 pm - 5:40 pm
ICN
-
LHR
26h 55m1 stop
Scandinavian Airlines Logo
5:00 pm - 7:00 pm
LHR
-
ICN
17h 00m1 stop
$571Scandinavian Airlines
Wed, Mar 4 - Thu, Mar 12
Air China Logo
2:25 pm - 8:25 pm
GMP
-
LHR
14h 00m1 stop
Air China Logo
8:25 pm - 1:05 pm
LHR
-
GMP
32h 40m1 stop
$639Air China
Tue, Jun 2 - Mon, Jun 15
Air China Logo
2:25 pm - 8:25 pm
GMP
-
LHR
14h 00m1 stop
Air China Logo
10:40 pm - 1:05 pm
LHR
-
GMP
30h 25m1 stop
$657Air China
Sun, May 31 - Wed, Jun 3
China Southern Logo
1:30 pm - 5:55 pm
GMP
-
LHR
37h 25m1 stop
China Southern Logo
9:30 pm - 12:25 pm
LHR
-
GMP
29h 55m1 stop
$950China Southern
Thu, Feb 19 - Thu, Feb 26
Japan Airlines Logo
7:40 pm - 8:40 pm
GMP
-
LHR
34h 00m2 stops
Japan Airlines Logo
8:35 am - 6:20 pm
LHR
-
GMP
24h 45m1 stop
$1,179Japan Airlines
Thu, Jan 22 - Mon, Jan 26

China Eastern flights from Seoul to London Heathrow Airport

Our best China Eastern deals on Seoul to London Heathrow Airport flight tickets
China Eastern
Mar 1
ICN2:30 pmIncheon Intl
36h 00m
1 stop
LHR5:30 pmLondon Heathrow
Mar 5
LHR9:00 pmLondon Heathrow
33h 20m
1 stop
ICN3:20 pmIncheon Intl
$525
Find similar
China Eastern
Mar 1
ICN8:55 amIncheon Intl
17h 35m
1 stop
LHR5:30 pmLondon Heathrow
Mar 6
LHR9:00 pmLondon Heathrow
33h 05m
1 stop
ICN3:05 pmIncheon Intl
$568
Find similar
China Eastern
Mar 2
ICN8:55 amIncheon Intl
17h 35m
1 stop
LHR5:30 pmLondon Heathrow
Mar 6
LHR9:00 pmLondon Heathrow
14h 45m
1 stop
ICN8:45 pmIncheon Intl
$664
Find similar

Scandinavian Airlines flights from Seoul to London Heathrow Airport

Our best Scandinavian Airlines deals on Seoul to London Heathrow Airport flight tickets
Scandinavian Airlines
Mar 2
ICN11:45 pmIncheon Intl
42h 10m
2 stops
LHR8:55 amLondon Heathrow
Mar 5
LHR6:40 amLondon Heathrow
27h 20m
1 stop
ICN7:00 pmIncheon Intl
$538
Find similar
Scandinavian Airlines
Mar 4
ICN11:45 pmIncheon Intl
26h 55m
1 stop
LHR5:40 pmLondon Heathrow
Mar 12
LHR5:00 pmLondon Heathrow
17h 00m
1 stop
ICN7:00 pmIncheon Intl
$571
Find similar
Scandinavian Airlines
Mar 2
ICN11:45 pmIncheon Intl
27h 45m
1 stop
LHR6:30 pmLondon Heathrow
Mar 5
LHR6:40 pmLondon Heathrow
15h 20m
1 stop
ICN7:00 pmIncheon Intl
$572
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seoul to London Heathrow 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 January 6, 2026.
Use the filters below to find and compare flights from Seoul to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 1/20

4:10 pm-5:30 pm

1 stop34h 20m

London Heathrow

Fri 1/23

9:30 pm-10:15 pm

1 stop15h 45m

$516

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Sun 3/1

2:30 pm-5:30 pm

1 stop36h 00m

London Heathrow

Thu 3/5

9:00 pm-3:20 pm

1 stop33h 20m

$525

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Sun 3/8

4:15 pm-5:00 pm

1 stop33h 45m

London Heathrow

Sat 3/14

10:00 pm-1:50 pm

1 stop30h 50m

$528

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 3/2

11:45 pm-8:55 am

2 stops42h 10m

London Heathrow

Thu 3/5

6:40 am-7:00 pm

1 stop27h 20m

$538

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Sun 3/1

8:55 am-5:30 pm

1 stop17h 35m

London Heathrow

Fri 3/6

9:00 pm-3:05 pm

1 stop33h 05m

$568

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 3/4

11:45 pm-5:40 pm

1 stop26h 55m

London Heathrow

Thu 3/12

5:00 pm-7:00 pm

1 stop17h 00m

$571

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Tue 6/2

2:25 pm-8:25 pm

1 stop14h 00m

London Heathrow

Mon 6/15

8:25 pm-1:05 pm

1 stop32h 40m

$639

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Sun 5/31

2:25 pm-8:25 pm

1 stop14h 00m

London Heathrow

Wed 6/3

10:40 pm-1:05 pm

1 stop30h 25m

$657

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Thu 2/19

1:30 pm-5:55 pm

1 stop37h 25m

London Heathrow

Thu 2/26

9:30 pm-12:25 pm

1 stop29h 55m

$950

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Thu 1/22

7:40 pm-8:40 pm

2 stops34h 00m

London Heathrow

Mon 1/26

8:35 am-6:20 pm

1 stop24h 45m

$1,179

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Seoul to London Heathrow 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 typical price of a round-trip flight between Seoul and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

The month of November is, on average, the cheapest month to fly to London Heathrow Airport from Seoul, with most prices found around $706. If you’re not able to fly to London Heathrow Airport in November, then January is your next best option. Flight prices from Seoul to London Heathrow Airport during January average around $716.

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Tuesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $895. The most expensive day to fly to London Heathrow Airport is Sunday, with ticket prices averaging around $1,105.

What is the cheapest Seoul to London Heathrow flight route?

Fly from Incheon Intl to London Heathrow for the best Seoul - London Heathrow flight prices

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Seoul when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $890 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Seoul for as low as $752 on momondo.

What cabin class options are available on Seoul to London Heathrow flights?

There are 2 cabin classes available to choose from on Seoul to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Seoul to London Heathrow Airport flight prices changed over time?

As of January 2026, prices for Seoul to London Heathrow Airport flights are approximately 32% more expensive when compared to flights at the same time last year.

When to book flights from Seoul to London Heathrow Airport

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

Cheap Seoul to London Heathrow Airport (SEL to LHR) flight deals and tips

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

Best Price Found

$626

Fastest flight time

14h 00m

Direct flights

Mon, Tue, Wed, Thu, Fri and Sun
The best one-way flight to London Heathrow Airport from Seoul in the past 72 hours is $626. The best round-trip flight deal from Seoul to London Heathrow Airport found on momondo in the last 72 hours is $672.
The fastest flight from Seoul to London Heathrow Airport takes 14h 00m
Direct flights go from Seoul to London Heathrow Airport on Monday, Tuesday, Wednesday, Thursday, Friday and Sunday. There are no airlines offering direct flights.
Search flight deals

  • How far is Seoul to London Heathrow by plane?

    A flight from Seoul to London Heathrow will travel around 5512.0 mi. In terms of flight time, this usually takes a little over 14h 00m.

  • When did momondo last update prices for flights from Seoul to London Heathrow Airport?

    Prices for flights from Seoul to London Heathrow Airport were last updated today.

  • How many operators does momondo search for flights from Seoul to London Heathrow Airport?

  • How old do you have to be to fly from Seoul to London Heathrow Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seoul to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The required travel and health documents for your London Heathrow Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Seoul to London Heathrow Airport?

  • What is the most popular airline from Seoul to London Heathrow Airport?

Best airlines flying from Seoul to London Heathrow Airport

Compare and see reviews for airlines that fly from Seoul to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
Air ChinaPriceFrom $552Free CancellationRating
7.2
136 reviews
Search Air China flights
Asiana AirlinesPriceFrom $629Free CancellationRating
8.2
500 reviews
Search Asiana Airlines flights
LufthansaPriceFrom $754Free CancellationRating
6.8
7,690 reviews
Search Lufthansa flights
Korean AirPriceFrom $847Free CancellationRating
8.4
1,188 reviews
Search Korean Air flights

  • Korean Air Flights From Seoul to London Heathrow Airport

    The lowest priced Korean Air flight from Seoul to London Heathrow Airport from the last 72 hours was $847. Generally, Korean Air has 7 flights on this route every week with an average price of $1,103. Korean Air is rated 8.4/10 by our users.

  • Asiana Airlines Flights From Seoul to London Heathrow Airport

    The best Asiana Airlines deal for Seoul to London Heathrow Airport flight tickets found on momondo in the last 72 hours was $629, round-trip. It should be noted that an average Asiana Airlines flight deal for this route in this time was higher, at $850 round-trip. Asiana Airlines operates 7 flights out of Seoul into London Heathrow Airport in an average week, so prices vary by time and availability. 500 Asiana Airlines reviews by users on momondo have scored the airline at 8.2/10.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Luton
Hounslow
Milton Keynes
Dover
Slough
Guildford
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Dartford
Stratford-upon-Avon
Brentwood
Salisbury
Watford
Wembley
Cobham
Folkestone
Romford
Richmond
Uxbridge

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Seoul.

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

Yes. momondo allows you to filter the results for Seoul to London flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seoul to London.

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

If you are not ready to book a flight from Seoul to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

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