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Cheap flights from South Korea to London Heathrow Airport from £149

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 18/5. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — LHR
21 May — 28 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from South Korea to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from South Korea to Heathrow
Explore the most affordable flight options available from South Korea to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 April 2026.

Mon 18/516:20
ICN
-
LHR
1 stop34h 20m
China Eastern
Mon 25/521:20
LHR
-
ICN
1 stop15h 25m
China Eastern
Deal found 20/4£423
Tue 2/617:50
PUS
-
LHR
1 stop32h 50m
China Eastern
Wed 10/621:20
LHR
-
PUS
1 stop30h 15m
China Eastern
Deal found 20/4£429
Tue 19/516:15
ICN
-
LHR
1 stop34h 25m
China Eastern
Tue 26/521:20
LHR
-
ICN
1 stop34h 00m
China Eastern
Deal found 16/4£431
Sun 7/616:20
ICN
-
LHR
1 stop34h 20m
China Eastern
Sun 13/921:20
LHR
-
ICN
1 stop15h 25m
China Eastern
Deal found 18/4£445
Tue 19/516:15
ICN
-
LHR
1 stop34h 25m
China Eastern
Mon 25/521:20
LHR
-
ICN
1 stop36h 05m
China Eastern
Deal found 20/4£457
Fri 4/1223:45
ICN
-
LHR
2 stops27h 45m
Scandinavian Airlines
Sun 6/1209:55
LHR
-
ICN
2 stops24h 05m
Scandinavian Airlines
Deal found 17/4£483
Tue 5/511:40
ICN
-
LHR
1 stop17h 45m
Air France
Mon 11/506:15
LHR
-
ICN
1 stop19h 20m
Air France
Deal found 21/4£496
Fri 4/1212:40
ICN
-
LHR
1 stop17h 45m
Air France
Sun 6/1206:20
LHR
-
ICN
1 stop19h 10m
Air France
Deal found 17/4£497
Tue 22/1223:45
ICN
-
LHR
1 stop18h 35m
Scandinavian Airlines
Wed 6/119:30
LHR
-
ICN
1 stop14h 30m
Scandinavian Airlines
Deal found 18/4£520
Wed 10/613:05
ICN
-
LHR
1 stop36h 35m
Multiple Airlines
Wed 24/622:05
LHR
-
ICN
1 stop34h 40m
Multiple Airlines
Deal found 20/4£522
Tue 2/617:45
ICN
-
LHR
1 stop21h 15m
Etihad Airways
Tue 9/621:45
LHR
-
ICN
1 stop29h 05m
Etihad Airways
Deal found 18/4£522
Sat 20/612:35
PUS
-
LHR
1 stop38h 05m
China Eastern
Sun 20/921:20
LHR
-
PUS
1 stop35h 30m
China Eastern
Deal found 17/4£543

Find flight deals from South Korea to Heathrow

Keep the following information in mind while searching for South Korea to Heathrow flight deals. Data was last updated 21 April 2026.

Round-trip from

£423

One-way from

£149

Popular in

October

Cheapest in

January

Average price

£571

Good round-trip deal

£585 or less

Good one-way deal

£294 or less
China Eastern
  • China Eastern
  • 18/5-25/5
  • 2 total stops
  • 49h 45m total
  • South Korea to London
Search Deals
China Eastern
  • China Eastern
  • 18/5
  • 1 total stop
  • 34h 20m total
  • South Korea to London
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£57 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from South Korea to London Heathrow.
Search Deals
Price to beat on a one-way flight from South Korea to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from South Korea to Heathrow 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 April 2026.
Use the filters below to find and compare flights from South Korea to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BusanLondon

PUS - LHR

PUSLHR

Busan Gimhae

Wed 3/6

17:50-18:40

1 stop32h 50m

London Heathrow

Wed 10/6

21:20-11:35

1 stop30h 15m

£559

BusanLondon

PUS - LHR

PUSLHR

Busan Gimhae

Tue 2/6

17:50-18:40

1 stop32h 50m

London Heathrow

Mon 15/6

21:20-11:35

1 stop30h 15m

£581

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 5/10

23:35-09:20

1 stop17h 45m

London Heathrow

Mon 26/10

10:35-19:00

2 stops23h 25m

£583

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Fri 8/5

11:40-22:10

2 stops18h 30m

London Heathrow

Mon 18/5

06:55-09:55

1 stop19h 00m

£592

Jeju CityLondon

CJU - LHR

CJULHR

Jeju City

Fri 22/5

16:00-18:40

1 stop34h 40m

London Heathrow

Wed 27/5

21:20-15:00

1 stop33h 40m

£596

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Sat 5/9

17:45-07:00

1 stop21h 15m

London Heathrow

Mon 11/1

20:55-10:45

1 stop28h 50m

£609

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 7/10

23:35-14:35

2 stops23h 00m

London Heathrow

Mon 19/10

10:35-18:35

2 stops24h 00m

£621

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 3/8

01:35-18:45

1 stop25h 10m

London Heathrow

Wed 12/8

21:45-10:50

1 stop29h 05m

£622

Jeju CityLondon

CJU - LHR

CJULHR

Jeju City

Sun 31/5

22:05-20:25

1 stop30h 20m

London Heathrow

Sun 7/6

22:05-13:55

1 stop31h 50m

£674

BusanLondon

PUS - LHR

PUSLHR

Busan Gimhae

Sun 31/5

12:45-17:40

1 stop36h 55m

London Heathrow

Sun 7/6

22:40-11:45

1 stop29h 05m

£693

Flights are sorted by cheapest return flights first.

Deals found on 19/4

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from South Korea to Heathrow

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

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

Currently, November is the cheapest month in which you can book a flight from South Korea to London Heathrow Airport (average of £314). Flying from South Korea to London Heathrow Airport in August is currently the most expensive (average of £451). 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 KR to LHR?

Find hourly flight availability from South Korea to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 April 2026.

When flying from South Korea to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from South Korea to London Heathrow Airport

Explore weekly flight availability from South Korea to Heathrow. 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 April 2026.

The most flights from KR0 to LHR are scheduled on a Monday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).

How often are flights from South Korea to London delayed?

About 30% of weekly flights between South Korea and London have experienced delays in the past year, with the average delay time being 94 minutes.

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

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

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

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

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

Over the past year, Korean Air have had the lowest number of delays on this route, with just 21% of flights being delayed.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 21 April 2026.
Get a feel of what it's like to fly with Korean Air,Asiana Airlines, andVirgin Atlantic from South Korea to London Heathrow Airport 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
1,212 reviews
Check prices

Comfort

8.3

Entertainment

8.2

Crew

8.7

Overall

8.4

Food

8.1

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very Good
1,212 reviews
Korean Air
8.4
Very Good
1,212 reviews
Check prices

Comfort

8.3

Entertainment

8.2

Crew

8.7

Overall

8.4

Food

8.1

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Asiana Airlines
8.0
Very Good
519 reviews
Korean Air
8.4
Very Good
1,212 reviews
Check prices

Comfort

8.3

Entertainment

8.2

Crew

8.7

Overall

8.4

Food

8.1

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Virgin Atlantic
7.5
Good
687 reviews
Korean Air
8.4
Very Good
1,212 reviews
Check prices

Comfort

8.3

Entertainment

8.2

Crew

8.7

Overall

8.4

Food

8.1

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Air China
7.3
Good
148 reviews
Korean Air
8.4
Very Good
1,212 reviews
Check prices

Comfort

8.3

Entertainment

8.2

Crew

8.7

Overall

8.4

Food

8.1

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Related info for your journey

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

    There are many flights that can get you from South Korea to London Heathrow Airport in 17h 45m. Fly via China Eastern, Scandinavian Airlines, or Lufthansa to get the fastest option. The distance between South Korea and London Heathrow Airport is about 5503 mi. This flight may include one or multiple stops.

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

    £119 is the cheapest one-way deal found within the past few days, from China Eastern. You may also be able to find cheap deals on Air China and Etihad Airways, with prices starting from £131 and £212, respectively.

  • What are the most popular routes from South Korea to London Heathrow Airport?

    When deciding which route to take from South Korea to London Heathrow Airport consider Incheon Intl - London Heathrow, Seoul Gimpo Intl - London Heathrow or Busan Gimhae - London Heathrow as they are the most popular.

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

    No one likes to see their flight delayed. When booking a flight from South Korea to London Heathrow Airport consider choosing Virgin Atlantic (86%), Korean Air (83%) or Asiana Airlines (77%) as they are the most reliable in getting you off to your destination on time.

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

    Looking at all options, your cheapest flight can be booked for £266. While the most popular route (Incheon Intl - London Heathrow) can be booked for £423 on average, our data indicates £833 when flying from South Korea to London Heathrow Airport.

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

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

  • How can I find direct flights from South Korea to Heathrow?

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

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

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

    Currently, November is the cheapest month in which you can book a flight from South Korea to London Heathrow Airport (average of £314). Flying from South Korea to London Heathrow Airport in August is currently the most expensive (average of £451). 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 Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Wembley
Croydon
Hounslow
Northampton
Luton
Gatwick
Ilford
Slough
Hayes
Brentford
Colchester
Watford
Kingston upon Thames
Romford
Eastbourne
Swindon
Ipswich
Southend-on-Sea
Guildford

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 South Korea to Heathrow

Discover the top 4 airlines that operate flights from South Korea to Heathrow. 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 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest£437Average£572FlexibilityNo cancel feeOn-time67%
Search Air China flights
Asiana AirlinesCheapest£477Average£557FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Virgin AtlanticCheapest£489Average£689FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Korean AirCheapest£613Average£815FlexibilityNo 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 South Korea to Heathrow?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from South Korea to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from South Korea to Heathrow?

Cheapflights helps you find that perfect flight to Heathrow from South Korea by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Need flexible booking options for your flight to Heathrow from South Korea? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes! Start tracking prices for South Korea to Heathrow 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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