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Cheap flights from Seoul to London Heathrow Airport from £128

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 15/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — LHR
24 Feb — 3 Mar1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seoul to London Heathrow are usually found in November or December, booked 79 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap flight deals from Seoul to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Seoul to Heathrow
Explore the most affordable flight options available from Seoul to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 January 2026.

Sun 8/308:55
ICN
-
LHR
1 stop17h 35m
China Eastern
Sun 15/321:00
LHR
-
ICN
1 stop14h 45m
China Eastern
Deal found 23/1£333
Wed 11/308:55
ICN
-
LHR
1 stop17h 35m
China Eastern
Wed 18/321:00
LHR
-
ICN
1 stop14h 45m
China Eastern
Deal found 25/1£336
Thu 5/308:55
ICN
-
LHR
1 stop17h 35m
China Eastern
Tue 10/321:00
LHR
-
ICN
1 stop14h 45m
China Eastern
Deal found 24/1£337
Mon 9/308:55
ICN
-
LHR
1 stop17h 35m
China Eastern
Mon 16/321:00
LHR
-
ICN
1 stop14h 45m
China Eastern
Deal found 23/1£339
Tue 3/312:55
ICN
-
LHR
1 stop37h 35m
China Eastern
Mon 9/321:00
LHR
-
ICN
1 stop14h 45m
China Eastern
Deal found 24/1£341
Tue 10/308:55
ICN
-
LHR
1 stop17h 35m
China Eastern
Tue 17/321:00
LHR
-
ICN
1 stop29h 55m
China Eastern
Deal found 24/1£341
Tue 10/308:55
ICN
-
LHR
1 stop17h 35m
China Eastern
Wed 18/321:00
LHR
-
ICN
1 stop14h 45m
China Eastern
Deal found 25/1£344
Fri 6/308:55
ICN
-
LHR
1 stop17h 35m
China Eastern
Wed 11/321:00
LHR
-
ICN
1 stop14h 45m
China Eastern
Deal found 23/1£347
Wed 4/308:55
ICN
-
LHR
1 stop17h 35m
China Eastern
Wed 18/321:00
LHR
-
ICN
1 stop31h 30m
China Eastern
Deal found 23/1£349
Mon 9/314:25
GMP
-
LHR
1 stop34h 30m
Air China
Mon 16/320:25
LHR
-
GMP
1 stop31h 40m
Air China
Deal found 23/1£400
Thu 12/313:30
GMP
-
LHR
1 stop37h 25m
China Southern
Mon 16/321:30
LHR
-
GMP
1 stop29h 55m
China Southern
Deal found 22/1£401
Thu 5/314:25
GMP
-
LHR
1 stop34h 30m
Air China
Tue 10/320:25
LHR
-
GMP
1 stop31h 40m
Air China
Deal found 23/1£406

Find flight deals from Seoul to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Seoul (SEL) to Heathrow (LHR). 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 25 January 2026.

Round-trip from

£333

One-way from

£128

Popular in

October

Cheapest in

November

Average price

£569

Good round-trip deal

£873 or less

Good one-way deal

£466 or less
China Eastern
  • China Eastern
  • 8/3-15/3
  • 2 total stops
  • 32h 20m total
  • Seoul to London
Search Deals
China Southern
  • China Southern
  • 15/3
  • 1 total stop
  • 35h 20m total
  • Seoul to London
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£38 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 January 2026
Search Deals
Price to beat on a round-trip flight from Seoul (SEL) to London Heathrow.
Search Deals
Price to beat on a one-way flight from Seoul (SEL) to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Seoul 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 25 January 2026.
Use the filters below to find and compare flights from Seoul to London Heathrow Airport that are best for you.

Fly from

Seoul

Fly to

Heathrow

Route

Depart

Return

Price

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Fri 6/3

08:55-17:30

1 stop17h 35m

London Heathrow

Sat 14/3

21:00-11:55

1 stop29h 55m

£358

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Sat 9/5

08:55-18:40

1 stop17h 45m

London Heathrow

Sat 16/5

21:20-15:20

1 stop34h 00m

£384

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 4/3

08:55-17:30

1 stop17h 35m

London Heathrow

Thu 12/3

21:00-11:55

1 stop29h 55m

£399

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Mon 9/3

14:25-15:55

1 stop34h 30m

London Heathrow

Sun 15/3

17:40-13:05

1 stop34h 25m

£406

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 2/3

08:55-17:30

1 stop17h 35m

London Heathrow

Sun 8/3

21:00-20:45

1 stop14h 45m

£429

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Mon 2/3

14:25-15:55

1 stop34h 30m

London Heathrow

Wed 11/3

17:40-13:05

1 stop34h 25m

£445

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Tue 10/3

14:25-15:55

1 stop34h 30m

London Heathrow

Tue 17/3

20:25-13:05

1 stop31h 40m

£452

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Wed 11/3

14:25-15:55

1 stop34h 30m

London Heathrow

Wed 18/3

20:25-13:05

1 stop31h 40m

£467

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 4/3

14:15-19:10

2 stops61h 55m

London Heathrow

Wed 11/3

21:10-13:15

2 stops31h 05m

£468

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Mon 9/3

14:25-15:55

1 stop34h 30m

London Heathrow

Mon 16/3

17:40-13:05

1 stop34h 25m

£476

Flights are sorted by cheapest return flights first.

Deals found on 25/1

Showing 1-10 of 42 results
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Best time to book a flight from Seoul to Heathrow

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

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

Use this chart to determine the optimal time to book a return flight from Seoul to Heathrow. Price data was last updated on 23 January 2026.

Booking 79 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seoul to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, March is the cheapest month in which you can book a flight from Seoul to London Heathrow Airport (average of £351). Flying from Seoul to London Heathrow Airport in July 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 LHR?

Find hourly flight availability from Seoul 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 25 January 2026.

When flying from Seoul 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 Seoul to London Heathrow Airport

Explore weekly flight availability from Seoul 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 25 January 2026.

The most flights from SEL to LHR 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 Heathrow Airport?

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

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

Beijing (PEK) – chosen by Cheapflights users on 24% of one-stop itineraries from Seoul to London Heathrow Airport on Cheapflights.

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

Average return fare for one-stop flights from Seoul to London Heathrow Airport, 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 £394.

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

Shortest average travel time for one-stop one-way flights from Seoul to London Heathrow Airport, 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 Heathrow Airport?

Average stopover duration for one-stop one-way flights from Seoul to London Heathrow Airport, 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 28m.

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 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 25 January 2026.
Read reviews from past customers who have flown with Korean Air, Asiana Airlines, andChina Eastern from Seoul to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very Good
1,188 reviews
Check prices

Entertainment

8.2

Food

8.1

Boarding

8.5

Comfort

8.3

Crew

8.7

Overall

8.4

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
1,188 reviews
Korean Air
8.4
Very Good
1,188 reviews
Check prices

Entertainment

8.2

Food

8.1

Boarding

8.5

Comfort

8.3

Crew

8.7

Overall

8.4

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
8.1
Very Good
501 reviews
Korean Air
8.4
Very Good
1,188 reviews
Check prices

Entertainment

8.2

Food

8.1

Boarding

8.5

Comfort

8.3

Crew

8.7

Overall

8.4

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!!
China Eastern
7.2
Good
191 reviews
Korean Air
8.4
Very Good
1,188 reviews
Check prices

Entertainment

8.2

Food

8.1

Boarding

8.5

Comfort

8.3

Crew

8.7

Overall

8.4

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
7.2
Good
138 reviews
Korean Air
8.4
Very Good
1,188 reviews
Check prices

Entertainment

8.2

Food

8.1

Boarding

8.5

Comfort

8.3

Crew

8.7

Overall

8.4

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 Seoul 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 Seoul to London Heathrow Airport?

    China Eastern, China Southern, and Air China can get you from Seoul to London Heathrow Airport in just under 17h 35m. Your travel time can differ by up to 19h 50m. Airlines will cover a distance of 5503 mi. This flight may include one or multiple stops.

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

    China Eastern, at £348, was found to be the cheapest airline from Seoul to London Heathrow Airport.Alternate airlines flying return to your destination include Air China and Asiana Airlines. These flights start at 48% lower than the current average price 3 months from now.

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

    The cheapest airline one-way is China Southern, with whom users have recently found tickets for as low as £118. However, be on the lookout for offers from Air China and Etihad Airways, as they are both options that can get you from Seoul to London Heathrow Airport for a low price.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seoul to London Heathrow Airport on time: Korean Air (77%), Virgin Atlantic (67%), Asiana Airlines (48%).

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

    Looking at all options, your cheapest flight can be booked for £427. While the most popular route (Incheon Intl - London Heathrow) can be booked for £327 on average, our data indicates £860 when flying from Seoul to London Heathrow Airport.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Seoul to London Heathrow Airport (average of £351). Flying from Seoul to London Heathrow Airport in July 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 Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Luton
Croydon
Wembley
Northampton
Gatwick
Slough
Hounslow
Ilford
Brentford
Hayes
Watford
Colchester
Guildford
Swindon
Chelmsford
Bedford
Crawley
Kingston upon Thames
Eastbourne

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 Heathrow

Discover the top 4 airlines that operate flights from Seoul 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 25 January 2026.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest£348Average£676FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Air ChinaCheapest£433Average£566FlexibilityNo cancel feeOn-time67%
Search Air China flights
Asiana AirlinesCheapest£476Average£551FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Korean AirCheapest£710Average£807FlexibilityNo 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 Heathrow?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Heathrow from Seoul today with Cheapflights!

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Seoul to Heathrow.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Seoul to Heathrow flexibly with Cheapflights today.

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

Yes! Start tracking prices for Seoul 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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