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Cheap flights from Seoul to London from £139

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — LON
15 Mar — 22 Mar1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seoul to London are usually found in June or January, booked 63 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap flight deals from Seoul to London

Enter your travel dates to find the best prices.

Cheapest flights from Seoul to London
Explore the most affordable flight options available from Seoul to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 February 2026.

Wed 4/316:10
ICN
-
LGW
1 stop23h 20m
China Eastern
Mon 9/317:00
LGW
-
ICN
1 stop18h 45m
China Eastern
Deal found 9/2£323
Sun 29/316:20
ICN
-
LGW
1 stop30h 50m
China Eastern
Sun 5/419:00
LGW
-
ICN
1 stop17h 45m
China Eastern
Deal found 12/2£325
Tue 3/316:20
ICN
-
LGW
1 stop23h 10m
China Eastern
Mon 9/317:00
LGW
-
ICN
1 stop37h 05m
China Eastern
Deal found 9/2£326
Wed 11/316:20
ICN
-
LGW
1 stop30h 40m
China Eastern
Sun 15/310:30
LGW
-
ICN
1 stop16h 25m
China Eastern
Deal found 9/2£328
Thu 12/318:25
ICN
-
LGW
1 stop28h 35m
China Eastern
Mon 16/310:30
LGW
-
ICN
1 stop19h 35m
China Eastern
Deal found 10/2£329
Thu 12/316:10
ICN
-
LGW
1 stop30h 50m
China Eastern
Tue 17/310:30
LGW
-
ICN
1 stop21h 55m
China Eastern
Deal found 12/2£329
Mon 9/318:25
ICN
-
LGW
1 stop28h 35m
China Eastern
Sun 15/310:30
LGW
-
ICN
1 stop19h 35m
China Eastern
Deal found 10/2£330
Thu 5/316:10
ICN
-
LGW
1 stop30h 50m
China Eastern
Wed 18/310:30
LGW
-
ICN
1 stop21h 55m
China Eastern
Deal found 8/2£331
Tue 3/318:25
ICN
-
LGW
1 stop28h 35m
China Eastern
Sun 8/310:30
LGW
-
ICN
1 stop21h 55m
China Eastern
Deal found 10/2£332
Thu 5/318:25
ICN
-
LGW
1 stop28h 35m
China Eastern
Sun 8/310:30
LGW
-
ICN
1 stop19h 50m
China Eastern
Deal found 9/2£332
Wed 4/316:20
ICN
-
LGW
1 stop30h 40m
China Eastern
Sat 7/310:30
LGW
-
ICN
1 stop18h 00m
China Eastern
Deal found 9/2£335
Wed 11/308:55
ICN
-
LHR
1 stop17h 35m
China Eastern
Sun 15/321:00
LHR
-
ICN
1 stop29h 55m
China Eastern
Deal found 10/2£339

Find flight deals from Seoul to London

Discover tips and strategies to find the most affordable flight options for your journey from Seoul (SEL) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 13 February 2026.

Round-trip from

£325

One-way from

£139

Popular in

October

Cheapest in

June

Average price

£588

Good round-trip deal

£563 or less

Good one-way deal

£416 or less
China Eastern
  • China Eastern
  • 29/3-5/4
  • 2 total stops
  • 48h 35m total
  • Seoul to London
Search Deals
China Southern
  • China Southern
  • 18/3
  • 1 total stop
  • 37h 25m total
  • Seoul to London
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Seoul (SEL) to London (LON).
Search Deals
Price to beat on a one-way flight from Seoul (SEL) to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Seoul to London 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, Cheapflights users made 858,174 searches. Data last updated 13 February 2026.
Use the filters below to find and compare flights from Seoul to London that are best for you.

Fly from

Seoul

Fly to

London

Route

Depart

Return

Price

IncheonLondon

ICN - LGW

ICNLGW

Incheon Intl

Tue 3/3

18:25-14:00

1 stop28h 35m

London Gatwick

Sun 8/3

10:30-15:20

1 stop19h 50m

£334

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Tue 2/6

13:25-18:05

1 stop36h 40m

London Heathrow

Mon 15/6

21:00-12:25

1 stop31h 25m

£380

IncheonLondon

ICN - LGW

ICNLGW

Incheon Intl

Thu 19/3

16:20-06:30

1 stop23h 10m

London Gatwick

Wed 1/4

11:35-11:55

1 stop16h 20m

£385

IncheonLondon

ICN - LGW

ICNLGW

Incheon Intl

Sun 15/3

16:20-14:00

1 stop30h 40m

London Gatwick

Wed 1/4

11:35-11:55

1 stop16h 20m

£387

SeoulLondon

GMP - LGW

GMPLGW

Seoul Gimpo Intl

Wed 11/3

20:50-06:30

1 stop18h 40m

London Gatwick

Sun 15/3

10:30-19:50

1 stop24h 20m

£399

IncheonLondon

ICN - LGW

ICNLGW

Incheon Intl

Thu 19/3

18:25-06:30

1 stop21h 05m

London Gatwick

Tue 31/3

11:35-13:30

1 stop17h 55m

£402

SeoulLondon

GMP - LGW

GMPLGW

Seoul Gimpo Intl

Thu 12/3

20:50-14:00

1 stop26h 10m

London Gatwick

Mon 16/3

10:30-19:50

1 stop24h 20m

£414

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Sun 29/3

13:25-18:05

1 stop36h 40m

London Heathrow

Sun 5/4

21:00-12:25

1 stop31h 25m

£417

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Wed 1/4

13:25-18:05

1 stop36h 40m

London Heathrow

Wed 15/4

21:00-12:25

1 stop31h 25m

£436

SeoulLondon

GMP - LGW

GMPLGW

Seoul Gimpo Intl

Mon 2/3

12:10-14:00

2 stops34h 50m

London Gatwick

Fri 6/3

10:30-17:05

2 stops21h 35m

£436

Flights are sorted by cheapest return flights first.

Deals found on 13/2

Showing 1-10 of 60 results
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Best time to book a flight from Seoul to London

Have a flexible travel schedule? Discover the best time to fly to London from Seoul with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seoul to London

How far ahead should I book a flight from Seoul to London?

Use this chart to determine the optimal time to book a return flight from Seoul to London. Price data was last updated on 6 February 2026.

The price you pay for your flight from Seoul to London may vary depending on when you book. For the best chance of a lower fare, look to book 63 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seoul to London?

Currently, September is the cheapest month in which you can book a flight from Seoul to London (average of £107). Flying from Seoul to London in August is currently the most expensive (average of £540). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEL to LON?

Find hourly flight availability from Seoul to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 February 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seoul to London as you normally would.

Weekly flight availability from Seoul to London

Explore weekly flight availability from Seoul to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 13 February 2026.

The most flights from SEL to LON are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

How much does it cost for a return flight from Seoul to London?

What’s the top stopover airport for flights from Seoul to London?

Share of one-stop return flights from Seoul to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Shanghai (PVG) – chosen by Cheapflights users on 43% of one-stop itineraries from Seoul to London on Cheapflights.

What’s the cheapest stopover airport for flights from Seoul to London?

Average return fare for one-stop flights from Seoul to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Shanghai (PVG) is the most affordable one-stop option, with an average return flight price of £395.

What’s the fastest stopover option from Seoul to London?

Shortest average travel time for one-stop one-way flights from Seoul to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Beijing (PEK) have the shortest average one-way travel time for one-stop routes: 14h 05m.

Which airport typically offers the quickest stopover for flights from Seoul to London?

Average stopover duration for one-stop one-way flights from Seoul to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Abu Dhabi (AUH) offer the fastest connection on this route, with an average stopover time of 1h 15m.

How often are flights from Seoul to London delayed?

About 0% of weekly flights between Seoul and London have experienced delays in the past year, with the average delay time being 0 minutes.

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

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

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

Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 13 February 2026.
Check out reviews from past customers who have flown with Asiana Airlines, China Southern, andChina Eastern from Seoul to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Asiana Airlines
8.1
Very Good
503 reviews
Check prices

Crew

8.5

Entertainment

7.6

Food

8.0

Comfort

8.0

Boarding

8.3

Overall

8.1

Reviews

1 / 20
2.0
Mediocre

Derek,Dec 2025

NRT - ICN

This was a terrible flight. Uncomfortable, incredibly hot in the plane. Will never fly with this airline again.
Asiana Airlines
8.1
Very Good
503 reviews
Asiana Airlines
8.1
Very Good
503 reviews
Check prices

Crew

8.5

Entertainment

7.6

Food

8.0

Comfort

8.0

Boarding

8.3

Overall

8.1

Reviews

1 / 20
2.0
Mediocre

Derek,Dec 2025

NRT - ICN

This was a terrible flight. Uncomfortable, incredibly hot in the plane. Will never fly with this airline again.
China Southern
7.3
Good
137 reviews
Asiana Airlines
8.1
Very Good
503 reviews
Check prices

Crew

8.5

Entertainment

7.6

Food

8.0

Comfort

8.0

Boarding

8.3

Overall

8.1

Reviews

1 / 20
2.0
Mediocre

Derek,Dec 2025

NRT - ICN

This was a terrible flight. Uncomfortable, incredibly hot in the plane. Will never fly with this airline again.
China Eastern
7.2
Good
192 reviews
Asiana Airlines
8.1
Very Good
503 reviews
Check prices

Crew

8.5

Entertainment

7.6

Food

8.0

Comfort

8.0

Boarding

8.3

Overall

8.1

Reviews

1 / 20
2.0
Mediocre

Derek,Dec 2025

NRT - ICN

This was a terrible flight. Uncomfortable, incredibly hot in the plane. Will never fly with this airline again.
Lufthansa
6.8
Okay
7,784 reviews
Asiana Airlines
8.1
Very Good
503 reviews
Check prices

Crew

8.5

Entertainment

7.6

Food

8.0

Comfort

8.0

Boarding

8.3

Overall

8.1

Reviews

1 / 20
2.0
Mediocre

Derek,Dec 2025

NRT - ICN

This was a terrible flight. Uncomfortable, incredibly hot in the plane. Will never fly with this airline again.

Related info for your journey

Find useful and relevant information for your journey from Seoul to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seoul to London?

    China Eastern, China Southern, and Finnair can get you from Seoul to London in just under 19h 20m. Your travel time can differ by up to 17h 20m. The distance between Seoul and London is about 5503 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Seoul to London round-trip?

    Cheapflights users have booked flights from Seoul to London round-trip from £433. Other airlines that can offer you cheap pricing are China Eastern, from £464, and Asiana Airlines, from £476. Air China is priced at 27% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Seoul to London one-way?

    To fly one-way, consider booking your trip with China Southern, which is currently one of the cheapest options available, starting at £118. Air China flights start at £130 while deals on China Eastern start at £146 one-way.

  • What are the most popular routes from Seoul to London?

    The most popular flight routes from Seoul to London are Incheon Intl - London Heathrow, Incheon Intl - London Gatwick and Incheon Intl - London Stansted.

  • What are the most reliable airlines from Seoul to London?

    The top 3 most reliable airlines when flying from Seoul to London are Korean Air (77%), Virgin Atlantic (59%) and Asiana Airlines (33%).

  • What are the cheapest flights from Seoul to London?

    Looking for the cheapest flight from Seoul to London? While on average our users pay £767, our data indicates the cheapest price to be £350. The most popular route (Incheon Intl - London Heathrow), is priced around £357.

  • Can I find deals for flights from Seoul to London that include hotel bookings?

    Yes. In addition to deals on Seoul to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Seoul to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seoul to London.

  • Can I find deals for business class flights from Seoul to London?

    Yes. Cheapflights offers flight deals from Seoul to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seoul to London?

    Currently, September is the cheapest month in which you can book a flight from Seoul to London (average of £107). Flying from Seoul to London in August is currently the most expensive (average of £540). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Milton Keynes
Croydon
Luton
Wembley
Gatwick
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Hounslow
Ilford
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Crawley
Kingston upon Thames
Ipswich
Bedford
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Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Seoul to London

Discover the top 4 airlines that operate flights from Seoul to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 13 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest£433Average£567FlexibilityNo cancel feeOn-time67%
Search Air China flights
China EasternCheapest£464Average£676FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Asiana AirlinesCheapest£476Average£552FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Korean AirCheapest£711Average£808FlexibilityNo cancel feeOn-time81%
Search Korean Air flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seoul to London?

When you search for this flight from Seoul to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Seoul to London?

Millions of users choose and trust Cheapflights to book the best flight deals from Seoul to London for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Seoul to London with no change fees?

Certainly. Search results for flights to London from Seoul shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Seoul to London become cheaper?

Of course! You can now track prices for flights from Seoul to London and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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