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Cheap flights from Seoul to London from £125

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 24/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — LON
16 Jan — 23 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Seoul to London are usually found in March or June, 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 17 December 2025.

Wed 24/1216:15ICN - LGW
1 stop23h 10mChina Southern
Tue 13/120:20LGW - ICN
1 stop16h 25mChina Southern
Deal found 14/12£405
Wed 24/1212:55ICN - LHR
1 stop37h 35mMultiple Airlines
Mon 29/1221:00LHR - ICN
2 stops38h 35mMultiple Airlines
Deal found 15/12£407
Thu 18/1216:10ICN - LHR
1 stop34h 20mMultiple Airlines
Sun 4/120:25LHR - ICN
1 stop35h 10mMultiple Airlines
Deal found 15/12£410
Tue 23/1208:55ICN - LHR
1 stop17h 35mMultiple Airlines
Wed 31/1217:40LHR - ICN
1 stop33h 00mMultiple Airlines
Deal found 15/12£417
Sat 27/1212:55ICN - LHR
1 stop37h 35mMultiple Airlines
Sat 3/121:35LHR - ICN
1 stop30h 20mMultiple Airlines
Deal found 15/12£418
Tue 23/1210:55ICN - LHR
1 stop40h 40mChina Southern
Thu 8/121:30LHR - ICN
1 stop15h 45mChina Southern
Deal found 15/12£422
Sun 28/1216:10ICN - LGW
1 stop30h 50mChina Eastern
Thu 1/110:30LGW - ICN
1 stop16h 25mChina Eastern
Deal found 15/12£425
Tue 23/1216:15ICN - LHR
1 stop35h 20mChina Southern
Wed 14/121:30LHR - ICN
1 stop15h 45mChina Southern
Deal found 16/12£426
Tue 23/1216:20ICN - LGW
1 stop30h 40mChina Eastern
Wed 31/1217:00LGW - ICN
1 stop33h 55mChina Eastern
Deal found 15/12£427
Tue 23/1212:55ICN - LHR
1 stop37h 35mChina Eastern
Sun 8/321:00LHR - ICN
2 stops29h 00mChina Eastern
Deal found 14/12£427
Wed 17/1216:10ICN - LHR
1 stop34h 20mChina Eastern
Wed 4/321:00LHR - ICN
2 stops29h 00mChina Eastern
Deal found 14/12£428
Mon 22/1216:20ICN - LHR
1 stop34h 10mChina Eastern
Thu 1/121:00LHR - ICN
1 stop29h 55mChina Eastern
Deal found 16/12£430

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 17 December 2025.

Round-trip from

£395

One-way from

£125

Popular in

October

Cheapest in

March

Average price

£520

Good round-trip deal

£485 or less

Good one-way deal

£374 or less
Air China
  • Air China
  • 3/4-13/4
  • 2 total stops
  • 40h 40m total
  • Seoul to London
Search Deals
China Eastern
  • China Eastern
  • 24/12
  • 1 total stop
  • 37h 35m total
  • Seoul to London
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£60 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 December 2025
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 17 December 2025.
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

SeoulLondon

GMP - LGW

GMPLGW

Seoul Gimpo Intl

Fri 6/3

20:50-14:00

1 stop26h 10m

London Gatwick

Wed 11/3

17:00-19:50

1 stop17h 50m

£396

SeoulLondon

GMP - LGW

GMPLGW

Seoul Gimpo Intl

Wed 14/1

20:50-14:00

1 stop26h 10m

London Gatwick

Wed 21/1

17:00-19:50

1 stop17h 50m

£399

SeoulLondon

GMP - LGW

GMPLGW

Seoul Gimpo Intl

Wed 14/1

20:50-14:00

1 stop26h 10m

London Gatwick

Tue 20/1

17:00-19:50

1 stop17h 50m

£399

SeoulLondon

GMP - LGW

GMPLGW

Seoul Gimpo Intl

Sat 13/6

14:25-06:35

1 stop24h 10m

London Gatwick

Sat 20/6

12:35-13:05

1 stop16h 30m

£401

IncheonLondon

ICN - LGW

ICNLGW

Incheon Intl

Tue 3/3

12:55-14:00

1 stop34h 05m

London Gatwick

Mon 16/3

17:00-20:45

1 stop18h 45m

£406

SeoulLondon

GMP - LGW

GMPLGW

Seoul Gimpo Intl

Wed 10/6

14:25-06:35

1 stop24h 10m

London Gatwick

Thu 18/6

12:35-13:05

1 stop16h 30m

£407

SeoulLondon

GMP - LGW

GMPLGW

Seoul Gimpo Intl

Fri 3/4

14:25-07:00

2 stops24h 35m

London Gatwick

Mon 13/4

12:35-13:05

1 stop16h 30m

£416

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Thu 29/1

14:25-17:50

1 stop36h 25m

London Heathrow

Thu 5/2

17:40-13:05

1 stop34h 25m

£417

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Mon 2/3

14:25-15:55

1 stop34h 30m

London Heathrow

Wed 11/3

20:25-13:05

1 stop31h 40m

£419

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Fri 3/4

14:25-20:25

1 stop14h 00m

London Heathrow

Mon 13/4

20:25-13:05

1 stop32h 40m

£422

Flights are sorted by cheapest return flights first.

Deals found on 14/12

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 12 December 2025.

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 £109). Flying from Seoul to London in August is currently the most expensive (average of £557). 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 17 December 2025.

One of the essential ways to save on airfare from Seoul to London is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 21% on airfare.

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 17 December 2025.

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 38% 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.

Zhengzhou (CGO) is the most affordable one-stop option, with an average return flight price of £370.

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 17 December 2025.
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
8.2
Very Good
493 reviews
Check prices

Entertainment

7.7

Crew

8.6

Overall

8.2

Food

8.1

Boarding

8.4

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

BKK - ICN

We wished that Asiana Airlines website should perform better by itself. Thanks to "Genfly" by Kayak that helped us get the tickets for us. Genfly also follow up with update flights schedule all the way. We gave Asiana Airlines "GOOD", and "Genfly" by Kayak "EXCELLENT" **** BTW...we will do it again nest time. Real passengers.
Asiana Airlines
8.2
Very Good
493 reviews
Asiana Airlines
8.2
Very Good
493 reviews
Check prices

Entertainment

7.7

Crew

8.6

Overall

8.2

Food

8.1

Boarding

8.4

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

BKK - ICN

We wished that Asiana Airlines website should perform better by itself. Thanks to "Genfly" by Kayak that helped us get the tickets for us. Genfly also follow up with update flights schedule all the way. We gave Asiana Airlines "GOOD", and "Genfly" by Kayak "EXCELLENT" **** BTW...we will do it again nest time. Real passengers.
China Southern
7.5
Good
122 reviews
Asiana Airlines
8.2
Very Good
493 reviews
Check prices

Entertainment

7.7

Crew

8.6

Overall

8.2

Food

8.1

Boarding

8.4

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

BKK - ICN

We wished that Asiana Airlines website should perform better by itself. Thanks to "Genfly" by Kayak that helped us get the tickets for us. Genfly also follow up with update flights schedule all the way. We gave Asiana Airlines "GOOD", and "Genfly" by Kayak "EXCELLENT" **** BTW...we will do it again nest time. Real passengers.
China Eastern
7.2
Good
178 reviews
Asiana Airlines
8.2
Very Good
493 reviews
Check prices

Entertainment

7.7

Crew

8.6

Overall

8.2

Food

8.1

Boarding

8.4

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

BKK - ICN

We wished that Asiana Airlines website should perform better by itself. Thanks to "Genfly" by Kayak that helped us get the tickets for us. Genfly also follow up with update flights schedule all the way. We gave Asiana Airlines "GOOD", and "Genfly" by Kayak "EXCELLENT" **** BTW...we will do it again nest time. Real passengers.
Air China
7.1
Good
129 reviews
Asiana Airlines
8.2
Very Good
493 reviews
Check prices

Entertainment

7.7

Crew

8.6

Overall

8.2

Food

8.1

Boarding

8.4

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

BKK - ICN

We wished that Asiana Airlines website should perform better by itself. Thanks to "Genfly" by Kayak that helped us get the tickets for us. Genfly also follow up with update flights schedule all the way. We gave Asiana Airlines "GOOD", and "Genfly" by Kayak "EXCELLENT" **** BTW...we will do it again nest time. Real passengers.
Lufthansa
6.8
Okay
7,632 reviews
Asiana Airlines
8.2
Very Good
493 reviews
Check prices

Entertainment

7.7

Crew

8.6

Overall

8.2

Food

8.1

Boarding

8.4

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

BKK - ICN

We wished that Asiana Airlines website should perform better by itself. Thanks to "Genfly" by Kayak that helped us get the tickets for us. Genfly also follow up with update flights schedule all the way. We gave Asiana Airlines "GOOD", and "Genfly" by Kayak "EXCELLENT" **** BTW...we will do it again nest time. Real passengers.

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, Air China, and Scandinavian Airlines can get you from Seoul to London in just under 24h 10m. Your travel time can differ by up to 2h. The distance between Seoul and London is about 5515 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 £354. Other airlines that can offer you cheap pricing are Air China, from £441, and Asiana Airlines, from £485. China Eastern is priced at 40% 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 £120. Air China flights start at £135 while deals on Etihad Airways start at £245 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 Virgin Atlantic (67%), Korean Air (67%) and Asiana Airlines (48%).

  • What are the cheapest flights from Seoul to London?

    Looking for the cheapest flight from Seoul to London? While on average our users pay £485, our data indicates the cheapest price to be £254. The most popular route (Incheon Intl - London Heathrow), is priced around £373.

  • 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 £109). Flying from Seoul to London in August is currently the most expensive (average of £557). 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
Slough
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Luton
Gatwick
Wembley
Ilford
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Hayes
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Chichester
Eastbourne
Guildford
Ipswich

Browse thousands of different options on Cheapflights for your next trip

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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 17 December 2025.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest£354Average£688FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Air ChinaCheapest£441Average£576FlexibilityNo cancel feeOn-time67%
Search Air China flights
Asiana AirlinesCheapest£485Average£552FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Korean AirCheapest£723Average£822FlexibilityNo 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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