How often are flights from Seoul to London delayed?

Historically, on average around 0% of flights between Seoul and London have experienced a delay on any given week. The average delay length over the past 12 months has been 0 minutes.

Which airport is the most popular for stopovers for flights between Seoul and London?

Beijing (PEK) was the most common stop: 20% of momondo users choosing one-stop flights on this route connected there.

What is the cheapest airline that flies from Seoul to London?

China Southern, Air China, and China Eastern are the most popular carriers operating from Seoul to London

What is the most punctual flight time for Seoul to London flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the morning have, in the past, seen delays more frequently in comparison.

Which stopover airport has the shortest connection time from Seoul to London?

Munich (MUC) has the shortest average stopover time for this route: 1h 33m.

How many flights depart from Seoul to London on average per day?

As of November 2025, there are 3 flights per day flying from Seoul to London. The most common time of day flights depart is 10:00, with 69% of flights taking off at midday.

How long does it take to fly to London?

Flight times from Seoul to London vary, but if you’re flying out of Incheon and flying into London Heathrow Airport (one of the most popular routes), then the duration is 14h 30m on average. Another popular route from Seoul to London is flying from Seoul to London Heathrow Airport, which will take roughly 19h 45m. Keep in mind that layovers or delays could extend your travel time.

What day of the week experiences the fewest flight delays on this route?

Monday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

Which stopover airport offers the lowest fares from Seoul to London?

Flights via Guangzhou (CAN) offer the lowest average return price of £364.

Which airlines fly to London?

Asiana Airlines, China Eastern and Korean Air are the top three most popular airlines that fly to London from Seoul according to our data. Asiana Airlines is the first choice among our users, with 44% of people opting to fly with this airline when travelling to London. Keep in mind that there are 3 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Which airline has the best punctuality record on Seoul to London flights?

According to our data, Korean Air have had the fewest delays on this route over the last 12 months, with no flights being classified as delayed.

Which stopover airport has the shortest travel time from Seoul to London?

Flights connecting via Beijing (PEK) have the shortest average one-way travel time: 15h 25m.

How many flights depart from Seoul to London on average per week?

The number of flights available between Seoul and London is 21 per week as of November 2025. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.

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

Prices for flights from Seoul to London refresh daily.

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

The number of operators available for flights from Seoul to London is 3 as of November 2025.

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

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 Seoul to London.

What documentation or ID do you need to fly to London?

The travel and health documents you'll need for your trip to London 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. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£148 Cheap Flights from Seoul to London in 2025/26

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20:50 - 06:30GMP-LGW

18h 40m1 stop

10:30 - 19:50LGW-GMP

24h 20m1 stop

£390China Eastern

Find Deal

Mon, 1 Dec - Tue, 2 Dec

20:50 - 06:30GMP-LGW

18h 40m1 stop

17:00 - 19:50LGW-GMP

17h 50m1 stop

£392China Eastern

Find Deal

Thu, 18 Dec - Sun, 4 Jan

14:25 - 05:35GMP-LGW

24h 10m1 stop

11:05 - 13:05LGW-GMP

41h 00m2 stops

£396Air China

Find Deal

Tue, 16 Dec - Tue, 6 Jan

14:25 - 05:35GMP-LGW

24h 10m1 stop

11:35 - 13:05LGW-GMP

16h 30m1 stop

£397Air China

Find Deal

Tue, 16 Dec - Wed, 7 Jan

13:30 - 17:55GMP-LHR

37h 25m1 stop

21:30 - 12:25LHR-GMP

29h 55m1 stop

£397China Southern

Find Deal

Thu, 18 Dec - Tue, 6 Jan

14:25 - 14:40GMP-LGW

33h 15m3 stops

06:45 - 13:05LGW-GMP

21h 20m2 stops

£403Multiple Airlines

Find Deal

Sun, 18 Jan - Thu, 22 Jan

13:30 - 17:55GMP-LHR

37h 25m1 stop

21:30 - 12:25LHR-GMP

29h 55m1 stop

£412China Southern

Find Deal

Thu, 18 Dec - Thu, 8 Jan

20:50 - 17:30GMP-LHR

29h 40m1 stop

17:40 - 13:05LHR-GMP

34h 25m1 stop

£419Multiple Airlines

Find Deal

Mon, 22 Dec - Wed, 31 Dec

13:30 - 07:45ICN-LHR

27h 15m2 stops

10:30 - 10:50LHR-ICN

15h 20m1 stop

£438Lufthansa

Find Deal

Mon, 1 Dec - Fri, 5 Dec

13:30 - 09:05ICN-LCY

28h 35m2 stops

18:10 - 11:15LCY-ICN

32h 05m2 stops

£546Lufthansa

Find Deal

Wed, 21 Jan - Wed, 28 Jan

China Southern flights from Seoul to London

Our best China Southern deals on Seoul to London flight tickets

China Southern

18 Dec

GMP13:30Seoul Gimpo Intl

37h 25m

1 stop

LHR17:55London Heathrow

6 Jan

LHR21:30London Heathrow

29h 55m

1 stop

GMP12:25Seoul Gimpo Intl

£397

Find similar

China Southern

18 Dec

GMP13:30Seoul Gimpo Intl

37h 25m

1 stop

LHR17:55London Heathrow

8 Jan

LHR21:30London Heathrow

29h 55m

1 stop

GMP12:25Seoul Gimpo Intl

£412

Find similar

China Southern

18 Dec

GMP13:30Seoul Gimpo Intl

37h 25m

1 stop

LHR17:55London Heathrow

6 Jan

LHR21:30London Heathrow

29h 55m

1 stop

GMP12:25Seoul Gimpo Intl

£413

Find similar

Lufthansa flights from Seoul to London

Our best Lufthansa deals on Seoul to London flight tickets

Lufthansa

1 Dec

ICN13:30Incheon Intl

27h 15m

2 stops

LHR07:45London Heathrow

5 Dec

LHR10:30London Heathrow

15h 20m

1 stop

ICN10:50Incheon Intl

£438

Find similar

Lufthansa

6 Dec

ICN13:30Incheon Intl

27h 15m

2 stops

LHR07:45London Heathrow

11 Dec

LHR07:30London Heathrow

18h 20m

1 stop

ICN10:50Incheon Intl

£438

Find similar

Lufthansa

1 Dec

ICN13:30Incheon Intl

27h 15m

2 stops

LHR07:45London Heathrow

10 Dec

LHR07:40London Heathrow

18h 10m

2 stops

ICN10:50Incheon Intl

£444

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeoulLondon

GMP - LGW

GMPLGW

Seoul Gimpo Intl

Mon 1/12

20:50-06:30

1 stop18h 40m

London Gatwick

Tue 2/12

10:30-19:50

1 stop24h 20m

£390

SeoulLondon

GMP - LGW

GMPLGW

Seoul Gimpo Intl

Thu 18/12

20:50-06:30

1 stop18h 40m

London Gatwick

Sun 4/1

17:00-19:50

1 stop17h 50m

£392

SeoulLondon

GMP - LGW

GMPLGW

Seoul Gimpo Intl

Tue 16/12

14:25-05:35

1 stop24h 10m

London Gatwick

Tue 6/1

11:05-13:05

2 stops41h 00m

£396

SeoulLondon

GMP - LGW

GMPLGW

Seoul Gimpo Intl

Tue 16/12

14:25-05:35

1 stop24h 10m

London Gatwick

Wed 7/1

11:35-13:05

1 stop16h 30m

£397

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Thu 18/12

13:30-17:55

1 stop37h 25m

London Heathrow

Tue 6/1

21:30-12:25

1 stop29h 55m

£397

SeoulLondon

GMP - LGW

GMPLGW

Seoul Gimpo Intl

Sun 18/1

14:25-14:40

3 stops33h 15m

London Gatwick

Thu 22/1

06:45-13:05

2 stops21h 20m

£403

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Thu 18/12

13:30-17:55

1 stop37h 25m

London Heathrow

Thu 8/1

21:30-12:25

1 stop29h 55m

£412

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Mon 22/12

20:50-17:30

1 stop29h 40m

London Heathrow

Wed 31/12

17:40-13:05

1 stop34h 25m

£419

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 1/12

13:30-07:45

2 stops27h 15m

London Heathrow

Fri 5/12

10:30-10:50

1 stop15h 20m

£438

IncheonLondon

ICN - LCY

ICNLCY

Incheon Intl

Wed 21/1

13:30-09:05

2 stops28h 35m

London City

Wed 28/1

18:10-11:15

2 stops32h 05m

£546

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How to get the cheapest flight ticket from Seoul to London

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

Prices

Airlines

Delays

Stopovers

Other information

What is the typical price of a round-trip flight between Seoul and London?

What is the cheapest month to fly to London?

The cheapest month to fly to London from Seoul is in March. Flight prices, which tend to average around £487, are often lower during this time because this is during the off-season. The month of June is another great option to travel to London, with average flight prices from Seoul averaging around £493.

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

Our data shows that Thursday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £579. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Seoul to London for around £807.

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

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £554. Flights in the morning are often more expensive, with an average ticket price of £739.

What is the cheapest Seoul to London flight route?

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

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

You are more likely to see cheaper flights to London from Seoul when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £663 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Seoul for as low as £597 on momondo.

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

There are 4 cabin classes available to choose from on Seoul to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seoul to London flights?

You could potentially save up to 16% on your flight if you consider stops on a Seoul to London flight.

How have Seoul to London flight prices changed over time?

As of November 2025, prices for Seoul to London flights are approximately 38% cheaper when compared to flights at the same time last year.

When to book flights from Seoul to London

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

Estimated return price

Cheap Seoul to London (SEL to LON) flight deals and tips

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

Best price found	£289
Fastest flight time	14h 30m
Direct flights	Every day
Airports in London	1 airport

The best one-way flight to London from Seoul in the past 72 hours is £289. The best return flight deal from Seoul to London found on momondo in the last 72 hours is £535.

The fastest flight from Seoul to London takes 14h 30m

Direct flights go from Seoul to London every day.

There is 1 airport near London: London Heathrow (LHR)

Search flight deals

How far is Seoul to London by plane?
Seoul and London are 5501.4 mi apart from one another. Flights usually cover this in 14h 40m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Seoul to London?
Prices for flights from Seoul to London refresh daily.
How many operators does momondo search for flights from Seoul to London?
The number of operators available for flights from Seoul to London is 3 as of November 2025.
How old do you have to be to fly from Seoul to London?
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 Seoul to London.
What documentation or ID do you need to fly to London?
The travel and health documents you'll need for your trip to London 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. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Seoul to London?
Based on momondo bookings for flights between Seoul and London, the leading plane model is Airbus A350-900, making up 53.10% of the total bookings. Other popular models include Boeing 777-300ER with 37.34%, Boeing 747-8 with 9.06%, and Embraer 190 with 0.25%.
What is the most popular airline from Seoul to London?
Based on momondo bookings for flights between Seoul and London, the leading airline is Air China, making up 33% of the total bookings. Other popular airlines include China Eastern with 29%, Lufthansa with 15%, and Asiana Airlines with 14%.

Best airlines flying from Seoul to London

Compare and see reviews for airlines that fly from Seoul to London with momondo

Airline	Rating	Free Cancellation	Price
China Eastern	PriceFrom £363	Free Cancellation	Rating 7.2 178 reviews	Search China Eastern flights
Asiana Airlines	PriceFrom £516	Free Cancellation	Rating 8.2 488 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom £742	Free Cancellation	Rating 8.4 1,170 reviews	Search Korean Air flights

Korean Air Flights From Seoul to London
Korean Air is one of the most popular airlines flying from Seoul to London, operating 7 flights/week on average for this route. A good Korean Air flight deal for Seoul to London starts from £742 round-trip, up to an average price of £843. Our users have rated Korean Air at 8.4/10.
Asiana Airlines Flights From Seoul to London
Another popular option for Seoul to London flights is Asiana Airlines (8.2/10, 488 ratings). Asiana Airlines flies from Seoul to London around 7 times per week, with deals starting from £516 round-trip and rising to an average price of around £754.

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Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seoul to London . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to London from Seoul on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Seoul to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for Seoul to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Seoul to London from £148

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 11/1. 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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How to get the cheapest flight ticket from Seoul to London

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?

What is the cheapest month to fly to London?

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

Our data shows that Thursday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £579. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Seoul to London for around £807.

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

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £554. Flights in the morning are often more expensive, with an average ticket price of £739.

What is the cheapest Seoul to London flight route?

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

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

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

There are 4 cabin classes available to choose from on Seoul to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seoul to London flights?

You could potentially save up to 16% on your flight if you consider stops on a Seoul to London flight.

How have Seoul to London flight prices changed over time?

As of November 2025, prices for Seoul to London flights are approximately 38% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Seoul to London?

China Southern, Air China, and China Eastern are the most popular carriers operating from Seoul to London

Which airlines fly to London?

How often are flights from Seoul to London delayed?

Historically, on average around 0% of flights between Seoul and London have experienced a delay on any given week. The average delay length over the past 12 months has been 0 minutes.

What is the most punctual flight time for Seoul to London flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the morning have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Monday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Seoul to London flights?

According to our data, Korean Air have had the fewest delays on this route over the last 12 months, with no flights being classified as delayed.

Which airport is the most popular for stopovers for flights between Seoul and London?

Beijing (PEK) was the most common stop: 20% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport offers the lowest fares from Seoul to London?

Flights via Guangzhou (CAN) offer the lowest average return price of £364.

Which stopover airport has the shortest travel time from Seoul to London?

Flights connecting via Beijing (PEK) have the shortest average one-way travel time: 15h 25m.

Which stopover airport has the shortest connection time from Seoul to London?

Munich (MUC) has the shortest average stopover time for this route: 1h 33m.

How many flights depart from Seoul to London on average per day?

As of November 2025, there are 3 flights per day flying from Seoul to London. The most common time of day flights depart is 10:00, with 69% of flights taking off at midday.

How many flights depart from Seoul to London on average per week?

The number of flights available between Seoul and London is 21 per week as of November 2025. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.

How long does it take to fly to London?

When to book flights from Seoul to London

Cheap Seoul to London (SEL to LON) flight deals and tips

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

Best price found

Fastest flight time

Direct flights

Airports in London

How far is Seoul to London by plane?

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

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

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

What documentation or ID do you need to fly to London?

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

What is the most popular airline from Seoul to London?

Best airlines flying from Seoul to London

Compare and see reviews for airlines that fly from Seoul to London with momondo

Korean Air Flights From Seoul to London