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Cheap flights from London Heathrow Airport to Seoul from £248

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 30/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SEL
21 Dec — 28 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London Heathrow to Seoul are usually found in November or January, booked 77 days in advance, depart on a Tuesday or Monday and return on a Thursday

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Cheapest flights from Heathrow to Seoul
Explore the most affordable flight options available from Heathrow to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 November 2025.

Tue 2/1221:00LHR - GMP
1 stop29h 00mChina Eastern
Tue 9/1220:50GMP - LHR
1 stop29h 40mChina Eastern
Deal found 18/11£347
Tue 25/1121:30LHR - ICN
1 stop15h 45mChina Southern
Tue 9/1209:25ICN - LHR
1 stop18h 10mChina Southern
Deal found 20/11£373
Mon 24/1117:40LHR - ICN
1 stop35h 05mAir China
Thu 27/1114:50ICN - LHR
1 stop36h 00mAir China
Deal found 19/11£375
Sun 30/1120:25LHR - GMP
1 stop31h 40mAir China
Thu 4/1214:25GMP - LHR
1 stop34h 30mAir China
Deal found 20/11£376
Wed 26/1121:30LHR - ICN
1 stop15h 45mMultiple Airlines
Mon 1/1216:20ICN - LHR
1 stop34h 10mMultiple Airlines
Deal found 20/11£376
Sat 22/1121:00LHR - ICN
2 stops30h 15mChina Eastern
Wed 26/1114:30ICN - LHR
1 stop36h 00mChina Eastern
Deal found 20/11£377
Thu 27/1121:00LHR - ICN
1 stop33h 20mChina Eastern
Sat 6/1216:20ICN - LHR
1 stop34h 10mChina Eastern
Deal found 20/11£379
Sun 23/1121:00LHR - ICN
1 stop29h 55mChina Eastern
Tue 25/1116:10ICN - LHR
1 stop34h 20mChina Eastern
Deal found 19/11£379
Sun 30/1120:25LHR - GMP
1 stop31h 40mAir China
Fri 5/1214:25GMP - LHR
1 stop36h 25mAir China
Deal found 20/11£380
Mon 24/1120:25LHR - ICN
1 stop35h 10mAir China
Fri 28/1114:55ICN - LHR
1 stop37h 45mAir China
Deal found 18/11£381
Mon 1/1220:25LHR - ICN
1 stop35h 10mAir China
Sat 6/1211:10ICN - LHR
1 stop15h 40mAir China
Deal found 21/11£383
Fri 28/1121:00LHR - ICN
2 stops29h 00mChina Eastern
Sat 6/1208:55ICN - LHR
1 stop17h 35mChina Eastern
Deal found 19/11£384

Cheap flight deals from Heathrow to Seoul

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Seoul (SEL). 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 21 November 2025.

Round-trip from

£347

One-way from

£248

Popular in

July

Cheapest in

November

Average price

£451

Good round-trip deal

£865 or less

Good one-way deal

£505 or less
China Eastern
  • China Eastern
  • 2/12-9/12
  • 2 total stops
  • 58h 40m total
  • London to Seoul
Search Deals
China Eastern
  • China Eastern
  • 30/11
  • 1 total stop
  • 29h 00m total
  • London to Seoul
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£79 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from London Heathrow to Seoul (SEL).
Search Deals
Price to beat on a one-way flight from London Heathrow to Seoul (SEL).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Seoul 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 21 November 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Seoul that are best for you.

Fly from

Heathrow

Fly to

Seoul

Route

Depart

Return

Price

LondonSeoul

LHR - GMP

LHRGMP

London Heathrow

Wed 11/3

20:25-13:05

1 stop31h 40m

Seoul Gimpo Intl

Mon 16/3

14:25-17:50

1 stop36h 25m

£379

LondonSeoul

LHR - GMP

LHRGMP

London Heathrow

Tue 10/2

20:25-13:05

1 stop31h 40m

Seoul Gimpo Intl

Tue 17/3

14:25-15:55

1 stop34h 30m

£431

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Fri 20/2

21:10-15:45

1 stop33h 35m

Incheon Intl

Sat 7/3

16:45-19:10

1 stop35h 25m

£462

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Sat 28/2

21:10-15:45

1 stop33h 35m

Incheon Intl

Thu 5/3

16:45-19:10

1 stop35h 25m

£462

LondonSeoul

LHR - GMP

LHRGMP

London Heathrow

Wed 3/12

17:40-13:05

1 stop34h 25m

Seoul Gimpo Intl

Thu 11/12

14:25-17:50

1 stop36h 25m

£483

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Sat 31/1

06:40-19:00

2 stops51h 20m

Incheon Intl

Wed 25/2

23:45-21:35

2 stops30h 50m

£502

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Mon 12/1

21:05-19:00

2 stops36h 55m

Incheon Intl

Wed 21/1

23:45-16:25

2 stops25h 40m

£506

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Sun 1/2

07:30-10:50

1 stop18h 20m

Incheon Intl

Sun 22/2

13:05-08:05

2 stops28h 00m

£514

LondonSeoul

LHR - GMP

LHRGMP

London Heathrow

Mon 8/12

07:00-13:05

2 stops21h 05m

Seoul Gimpo Intl

Thu 11/12

14:25-17:50

1 stop36h 25m

£524

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Wed 11/3

19:50-19:00

2 stops38h 10m

Incheon Intl

Mon 16/3

23:45-16:25

2 stops25h 40m

£525

Flights are sorted by cheapest return flights first.

Deals found on 20/11

Showing 1-10 of 46 results
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Best time to book a flight from Heathrow to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul from Heathrow 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 London Heathrow Airport to Seoul

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

Use this chart to determine the optimal time to book a return flight from Heathrow to Seoul. Price data was last updated on 14 November 2025.

The best time to book flights from London Heathrow Airport to Seoul is 77 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to Seoul (average of £341). Flying from London Heathrow Airport to Seoul in July is currently the most expensive (average of £645). 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 LHR to SEL?

Find hourly flight availability from Heathrow to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 November 2025.

When flying from London Heathrow Airport to Seoul, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 17% versus a flight in the morning.

What is the cheapest day to fly from London Heathrow Airport to Seoul?

Use this chart to determine the cheapest time to fly return from Heathrow to Seoul. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London Heathrow Airport to Seoul flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from London Heathrow Airport to Seoul

Explore weekly flight availability from Heathrow to Seoul. 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 21 November 2025.

The most flights from LHR to SEL 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 London Heathrow Airport to Seoul?

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

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

Beijing (PEK) – chosen by Cheapflights users on 29% of one-stop itineraries from London Heathrow Airport to Seoul on Cheapflights.

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

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

Chengdu (TFU) is the most affordable one-stop option, with an average return flight price of £432.

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

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

Flights via Frankfurt am Main (FRA) have the shortest average one-way travel time for one-stop routes: 14h 54m.

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

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

Flights via Frankfurt am Main (FRA) offer the fastest connection on this route, with an average stopover time of 1h 57m.

Reviews of airlines servicing Seoul

Get insights into the airlines that provide service to Seoul. 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 Seoul. Reviews last updated 21 November 2025.
Get a feel of what it's like to fly with Korean Air, Asiana Airlines, andChina Southern from London Heathrow Airport to Seoul by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very Good
1,170 reviews
Check prices

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very Good
1,170 reviews
Korean Air
8.4
Very Good
1,170 reviews
Check prices

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Asiana Airlines
8.2
Very Good
488 reviews
Korean Air
8.4
Very Good
1,170 reviews
Check prices

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
China Southern
7.5
Good
119 reviews
Korean Air
8.4
Very Good
1,170 reviews
Check prices

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Air China
7.2
Good
126 reviews
Korean Air
8.4
Very Good
1,170 reviews
Check prices

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Lufthansa
6.8
Okay
7,579 reviews
Korean Air
8.4
Very Good
1,170 reviews
Check prices

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Seoul. 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 London Heathrow Airport to Seoul?

    Airlines like Air China, Shenzhen Airlines, and Scandinavian Airlines fly from London Heathrow Airport to Seoul in about 31h 40m. The time it takes to get you to your destination can typically vary by up to 19h 40m. The distance between London Heathrow Airport and Seoul is about 5506 mi. This flight may include one or multiple stops.

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

    China Eastern, at £338, was found to be the cheapest airline from London Heathrow Airport to Seoul.Alternate airlines flying return to your destination include China Southern and Air China. China Eastern is priced at 49% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with China Eastern, which is currently one of the cheapest options available, starting at £253. Air China flights start at £286 while deals on China Southern start at £286 one-way.

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

    Before booking your flight to Seoul from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: Korean Air (97%), Virgin Atlantic (97%), Asiana Airlines( 87%).

  • What are the cheapest flights from London Heathrow Airport to Seoul?

    On average you can expect to pay £2,138 for a flight from London Heathrow Airport to Seoul. The cheapest flight overall is £479 while the most popular route, (London Heathrow - Incheon Intl) is currently priced at £334.

  • Where are the most common stopover locations when flying from London Heathrow Airport to Seoul?

    Flights departing from London Heathrow Airport and landing in Seoul stopover in Beijing most frequently.

  • What are some popular things to do or see while on a stopover in Beijing?

    If you're on a stopover in Beijing and looking for things to do, consider visiting Summer Palace, The Antiquarium of the Palace Museum, or Zhengyangmen. Those on a stopover in Beijing interested in visiting Summer Palace, The Antiquarium of the Palace Museum, or Zhengyangmen can do so by traveling 17.3 mi, 14.9 mi, and 15.9 mi, respectively from Beijing Capital.

  • Where are the least popular stopover locations for London Heathrow Airport to Seoul flights?

    London Heathrow Airport to Seoul flights have a stopover in Beijing least often.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow to Seoul 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 London Heathrow Airport to Seoul?

    Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to Seoul (average of £341). Flying from London Heathrow Airport to Seoul in July is currently the most expensive (average of £645). 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

Browse thousands of different options on Cheapflights for your next trip

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Fly from Heathrow to Seoul on these airlines

Choose from the following airlines for your flight from Heathrow to Seoul. Flights are based on user searches made on Cheapflights and were last updated on 21 November 2025.
Asiana Airlines flights from London Heathrow to Seoul
Korean Air flights from London Heathrow to Seoul
China Southern flights from London Heathrow to Seoul

Top 10 airlines flying from Heathrow to Seoul

Discover the top 10 airlines that operate flights from Heathrow to Seoul. 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 21 November 2025.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest£338Average£422FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
China SouthernCheapest£339Average£455FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest£366Average£598FlexibilityNo cancel feeOn-time67%
Search Air China flights
Shenzhen AirlinesCheapest£434Average£477FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
LufthansaCheapest£438Average£638FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
LOTCheapest£538Average£755FlexibilityNo cancel feeOn-time81%
Search LOT flights
Etihad AirwaysCheapest£553Average£695FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Turkish AirlinesCheapest£563Average£615FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
Air FranceCheapest£564Average£715FlexibilityNo cancel feeOn-time77%
Search Air France flights
FinnairCheapest£570Average£769FlexibilityNo cancel feeOn-time76%
Search Finnair 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 Heathrow to Seoul?

When you search for this flight from Heathrow to Seoul, 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 Heathrow to Seoul?

Cheapflights simply makes it quick and affordable to book flights from Heathrow to Seoul by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Yes, we can. To see specific flights from Heathrow to Seoul with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes! Start tracking prices for Heathrow to Seoul flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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