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Cheap flights from Seoul to London from $236

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 12/20. 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

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Shenzhen Airlines Logo
2:55 pm - 7:10 pmICN-LHR
37h 15m1 stop
Shenzhen Airlines Logo
9:10 pm - 1:55 pmLHR-ICN
31h 45m1 stop
$591Shenzhen Airlines
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Sat, Dec 20 - Fri, Jan 9
Air China Logo
2:55 pm - 7:40 pmICN-LHR
37h 45m1 stop
Air China Logo
5:40 pm - 11:40 amLHR-ICN
33h 00m1 stop
$592Air China
Find Deal
Fri, Jan 16 - Fri, Jan 23
China Southern Logo
9:25 am - 5:55 pmICN-LHR
17h 30m1 stop
China Southern Logo
10:00 pm - 3:15 pmLHR-ICN
32h 15m1 stop
$596China Southern
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Thu, Jan 15 - Thu, Jan 29
Air China Logo
1:10 pm - 3:55 pmICN-LHR
35h 45m1 stop
Air China Logo
5:40 pm - 11:40 amLHR-ICN
33h 00m1 stop
$598Air China
Find Deal
Mon, Nov 17 - Thu, Nov 20
Multiple Airlines Logo
2:55 pm - 7:10 pmICN-LHR
37h 15m1 stop
Multiple Airlines Logo
9:35 pm - 12:55 pmLHR-ICN
30h 20m1 stop
$616Multiple Airlines
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Sat, Dec 20 - Sat, Dec 27
Multiple Airlines Logo
2:55 pm - 7:10 pmICN-LHR
37h 15m1 stop
Multiple Airlines Logo
8:25 pm - 11:40 amLHR-ICN
30h 15m1 stop
$629Multiple Airlines
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Sat, Dec 20 - Fri, Jan 2
Malaysia Airlines Logo
11:05 am - 3:25 pmICN-LHR
37h 20m1 stop
Malaysia Airlines Logo
9:25 pm - 6:30 amLHR-ICN
24h 05m1 stop
$642Malaysia Airlines
Find Deal
Tue, Feb 24 - Mon, Mar 2
Lufthansa Logo
1:30 pm - 10:55 pmICN-LHR
18h 25m1 stop
Lufthansa Logo
7:40 am - 11:15 amLHR-ICN
18h 35m1 stop
$653Lufthansa
Find Deal
Fri, Feb 6 - Thu, Feb 12
Lufthansa Logo
1:30 pm - 9:00 pmICN-LHR
16h 30m1 stop
Lufthansa Logo
8:15 pm - 11:15 amLHR-ICN
30h 00m1 stop
$658Lufthansa
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Wed, Dec 3 - Wed, Dec 10
China Southern Logo
2:50 pm - 6:35 pmICN-LHR
36h 45m1 stop
China Southern Logo
9:30 pm - 10:15 pmLHR-ICN
15h 45m1 stop
$668China Southern
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Thu, Feb 19 - Wed, Feb 25

Air China flights from Seoul to London Heathrow Airport

Our best Air China deals on Seoul to London Heathrow Airport flight tickets
Air China
Nov 13
GMP2:25 pmSeoul Gimpo Intl
34h 30m
1 stop
LHR3:55 pmLondon Heathrow
Nov 23
LHR8:25 pmLondon Heathrow
31h 40m
1 stop
GMP1:05 pmSeoul Gimpo Intl
$549
Find similar
Air China
Jan 16
ICN2:55 pmIncheon Intl
37h 45m
1 stop
LHR7:40 pmLondon Heathrow
Jan 23
LHR5:40 pmLondon Heathrow
33h 00m
1 stop
ICN11:40 amIncheon Intl
$592
Find similar
Air China
Nov 17
ICN1:10 pmIncheon Intl
35h 45m
1 stop
LHR3:55 pmLondon Heathrow
Nov 20
LHR5:40 pmLondon Heathrow
33h 00m
1 stop
ICN11:40 amIncheon Intl
$598
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 16
ICN11:45 pmIncheon Intl
26h 55m
1 stop
LHR5:40 pmLondon Heathrow
Mar 22
LHR6:40 pmLondon Heathrow
15h 20m
1 stop
ICN7:00 pmIncheon Intl
$646
Find similar
Scandinavian Airlines
Feb 27
ICN11:45 pmIncheon Intl
18h 35m
1 stop
LHR9:20 amLondon Heathrow
Mar 3
LHR7:30 pmLondon Heathrow
14h 30m
1 stop
ICN7:00 pmIncheon Intl
$647
Find similar
Scandinavian Airlines
Jan 26
ICN11:45 pmIncheon Intl
26h 55m
1 stop
LHR5:40 pmLondon Heathrow
Feb 4
LHR7:50 pmLondon Heathrow
38h 10m
2 stops
ICN7:00 pmIncheon Intl
$650
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 November 6, 2025.
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

Sat 12/20

2:55 pm-7:10 pm

1 stop37h 15m

London Heathrow

Fri 1/9

9:10 pm-1:55 pm

1 stop31h 45m

$591

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Fri 1/16

2:55 pm-7:40 pm

1 stop37h 45m

London Heathrow

Fri 1/23

5:40 pm-11:40 am

1 stop33h 00m

$592

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Thu 1/15

9:25 am-5:55 pm

1 stop17h 30m

London Heathrow

Thu 1/29

10:00 pm-3:15 pm

1 stop32h 15m

$596

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 11/17

1:10 pm-3:55 pm

1 stop35h 45m

London Heathrow

Thu 11/20

5:40 pm-11:40 am

1 stop33h 00m

$598

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Sat 12/20

2:55 pm-7:10 pm

1 stop37h 15m

London Heathrow

Sat 12/27

9:35 pm-12:55 pm

1 stop30h 20m

$616

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Sat 12/20

2:55 pm-7:10 pm

1 stop37h 15m

London Heathrow

Fri 1/2

8:25 pm-11:40 am

1 stop30h 15m

$629

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 2/24

11:05 am-3:25 pm

1 stop37h 20m

London Heathrow

Mon 3/2

9:25 pm-6:30 am

1 stop24h 05m

$642

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Fri 2/6

1:30 pm-10:55 pm

1 stop18h 25m

London Heathrow

Thu 2/12

7:40 am-11:15 am

1 stop18h 35m

$653

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 12/3

1:30 pm-9:00 pm

1 stop16h 30m

London Heathrow

Wed 12/10

8:15 pm-11:15 am

1 stop30h 00m

$658

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Thu 2/19

2:50 pm-6:35 pm

1 stop36h 45m

London Heathrow

Wed 2/25

9:30 pm-10:15 pm

1 stop15h 45m

$668

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 December is, on average, the cheapest month to fly to London Heathrow Airport from Seoul, with most prices found around $742. If you’re not able to fly to London Heathrow Airport in December, then March is your next best option. Flight prices from Seoul to London Heathrow Airport during March average around $751.

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

Our data shows that Saturday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $961. The most expensive day to fly to London Heathrow Airport is Sunday, with ticket prices averaging around $1,111.

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

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Seoul to London Heathrow Airport in the evening for as low as $977. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $1,017.

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 $858 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 $775 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 November 2025, prices for Seoul to London Heathrow Airport flights are approximately 35% cheaper 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

$526

Fastest flight time

14h 25m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Seoul in the past 72 hours is $526. The best round-trip flight deal from Seoul to London Heathrow Airport found on momondo in the last 72 hours is $679.
The fastest flight from Seoul to London Heathrow Airport takes 14h 25m
Direct flights go from Seoul to London Heathrow Airport every day.
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 40m.

  • 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 $600Free CancellationRating
7.1
122 reviews
Search Air China flights
Asiana AirlinesPriceFrom $629Free CancellationRating
8.2
485 reviews
Search Asiana Airlines flights
LufthansaPriceFrom $754Free CancellationRating
6.8
7,558 reviews
Search Lufthansa flights
Korean AirPriceFrom $847Free CancellationRating
8.4
1,160 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 $890 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. 485 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
Hounslow
Milton Keynes
Dover
Luton
Slough
Guildford
Hayes
Dartford
Stratford-upon-Avon
Crawley
Brentwood
Chelmsford
Salisbury
Wembley
Folkestone
Romford
Ilford
Cobham
Swindon

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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