How long is the flight from Seoul to London Heathrow Airport?

China Southern, Air China, and Scandinavian Airlines can get you from Seoul to London Heathrow Airport in just under 18h 35m. Your travel time can differ by up to 18h 35m. 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 Asiana Airlines and Korean Air. 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 SWISS, with whom users have recently found tickets for as low as £304. However, be on the lookout for offers from Qatar Airways and Emirates, as they are both options that can get you from Seoul to London Heathrow Airport for a low price.

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

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

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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

Looking at all options, your cheapest flight can be booked for £380. While the most popular route (Incheon Intl - London Heathrow) can be booked for £410 on average, our data indicates £775 when flying from Seoul to London Heathrow Airport.

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: Virgin Atlantic (69%), Korean Air (62%), Asiana Airlines (42%).

What are the most popular airlines that fly from Seoul to London Heathrow Airport?

Korean Air, China Eastern and Asiana Airlines are the most popular airlines 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.

£213+ Cheap Flights from Seoul to London Heathrow Airport

Q: How much does it cost for a return flight from Seoul to London Heathrow Airport?

Airfare is below average for this route at the moment. Seoul to London Heathrow Airport flights typically cost between £623 and £890 in December. The cheapest return flight price found within the last 3 days was £445 on China Southern (16 Dec-3 Jan).

Cheapflights Tip: The best prices from Seoul to London Heathrow are usually found in December or March, booked 67 days in advance, depart on a Thursday or Monday and return on a Tuesday

Cheap flight deals from Seoul to Heathrow

Round-trip from	£445
One-way from	£213
Popular in	October
Cheapest in	December
Average price	£739
Good round-trip deal	£629 or less
Good one-way deal	£387 or less

China Southern
16/12-3/1
2 total stops
67h 05m total
Seoul to London

Search Deals

10/11
2 total stops
54h 00m total
Seoul to London

Search Deals

Highest demand for flights based on searches. 8% potential increase in price (£46 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

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

Find flight deals from Seoul to Heathrow

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 18 September 2025.

Fri 26/1214:25GMP - LHR

1 stop36h 25mAir China

Wed 31/1217:40LHR - GMP

1 stop34h 25mAir China

Deal found 18/9£424

Tue 28/1014:25GMP - LHR

1 stop36h 25mAir China

Sun 2/1120:25LHR - GMP

1 stop31h 40mAir China

Deal found 18/9£425

Thu 16/1013:30GMP - LHR

1 stop36h 35mChina Southern

Thu 23/1021:00LHR - GMP

1 stop31h 25mChina Southern

Deal found 18/9£432

Mon 1/1214:25GMP - LHR

1 stop34h 30mAir China

Sat 6/1217:40LHR - GMP

1 stop34h 25mAir China

Deal found 18/9£432

Thu 23/1014:25GMP - LHR

1 stop14h 05mAir China

Thu 30/1017:40LHR - GMP

1 stop34h 25mAir China

Deal found 16/9£445

Tue 16/1213:45GMP - LHR

1 stop37h 10mChina Southern

Sat 3/121:30LHR - GMP

1 stop29h 55mChina Southern

Deal found 17/9£447

Sat 20/1214:25GMP - LHR

1 stop34h 30mAir China

Fri 9/117:40LHR - GMP

1 stop34h 25mAir China

Deal found 17/9£448

Thu 25/1214:25GMP - LHR

1 stop34h 30mAir China

Sun 4/117:40LHR - GMP

1 stop34h 25mAir China

Deal found 16/9£448

Sun 14/1213:45GMP - LHR

1 stop37h 10mChina Southern

Sun 11/121:30LHR - GMP

1 stop29h 55mChina Southern

Deal found 17/9£449

Sat 15/1114:25GMP - LHR

1 stop36h 25mMultiple Airlines

Wed 19/1121:00LHR - GMP

1 stop29h 00mMultiple Airlines

Deal found 16/9£450

Fri 19/1214:25GMP - LHR

1 stop34h 30mAir China

Thu 1/117:40LHR - GMP

1 stop34h 25mAir China

Deal found 16/9£451

Sun 26/1014:25GMP - LHR

1 stop34h 30mAir China

Fri 31/1017:40LHR - GMP

1 stop34h 25mAir China

Deal found 17/9£453

Best flights from Seoul to Heathrow
Discover carefully curated flight deals from Seoul to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2025.

Thu 18/1213:45GMP - LHR

1 stop37h 10mChina Southern

Sat 17/121:30LHR - GMP

1 stop29h 55mChina Southern

Deal found 17/9£449

Sat 15/1114:25GMP - LHR

1 stop36h 25mMultiple Airlines

Wed 19/1121:00LHR - GMP

1 stop29h 00mMultiple Airlines

Deal found 16/9£450

Fri 19/1214:25GMP - LHR

1 stop34h 30mAir China

Thu 1/117:40LHR - GMP

1 stop34h 25mAir China

Deal found 16/9£451

Sat 11/1020:50GMP - LHR

1 stop29h 50mChina Eastern

Mon 27/1021:00LHR - GMP

1 stop29h 00mChina Eastern

Deal found 16/9£459

Wed 5/1123:45ICN - LHR

1 stop18h 35mScandinavian Airlines

Wed 12/1119:50LHR - ICN

2 stops38h 10mScandinavian Airlines

Deal found 17/9£516

Wed 14/113:30ICN - LHR

1 stop16h 30mLufthansa

Fri 23/106:35LHR - ICN

2 stops19h 15mLufthansa

Deal found 15/9£519

Wed 15/1010:05ICN - LHR

2 stops19h 25mSWISS

Mon 20/1008:55LHR - ICN

2 stops39h 30mSWISS

Deal found 17/9£534

Tue 21/1021:50ICN - LHR

1 stop32h 20mFinnair

Thu 5/318:10LHR - ICN

1 stop33h 15mFinnair

Deal found 16/9£543

Tue 10/212:25ICN - LHR

Nonstop14h 40mAsiana Airlines

Wed 11/320:10LHR - ICN

Nonstop12h 35mAsiana Airlines

Deal found 15/9£548

Tue 16/1213:45GMP - LHR

1 stop37h 10mChina Southern

Sun 11/121:30LHR - GMP

1 stop29h 55mChina Southern

Deal found 17/9£449

Fri 24/1014:25GMP - LHR

1 stop14h 05mAir China

Sat 1/1120:25LHR - GMP

1 stop31h 40mAir China

Deal found 18/9£466

Thu 18/1213:45GMP - LHR

1 stop37h 10mChina Southern

Sun 28/1221:30LHR - GMP

1 stop29h 55mChina Southern

Deal found 15/9£454

Fri 19/1213:45GMP - LHR

1 stop37h 10mMultiple Airlines

Thu 1/117:40LHR - GMP

1 stop34h 25mMultiple Airlines

Deal found 15/9£512

Mon 27/1023:45ICN - LHR

2 stops23h 50mScandinavian Airlines

Sat 8/1115:35LHR - ICN

2 stops42h 25mScandinavian Airlines

Deal found 16/9£517

Tue 17/213:05ICN - LHR

2 stops28h 00mLufthansa

Fri 27/208:45LHR - ICN

1 stop17h 30mLufthansa

Deal found 15/9£525

Sun 14/1214:25GMP - LHR

1 stop36h 25mAir China

Tue 23/1220:25LHR - GMP

1 stop31h 40mAir China

Deal found 17/9£496

Sun 12/1013:30GMP - LHR

1 stop36h 35mChina Southern

Sun 19/1021:00LHR - GMP

1 stop31h 25mChina Southern

Deal found 17/9£459

Wed 24/1213:05ICN - LHR

2 stops28h 00mLufthansa

Sun 28/1208:45LHR - ICN

1 stop17h 30mLufthansa

Deal found 17/9£533

Wed 14/123:45ICN - LHR

1 stop18h 35mScandinavian Airlines

Sun 25/115:35LHR - ICN

2 stops18h 25mScandinavian Airlines

Deal found 17/9£539

Mon 15/1214:25GMP - LHR

1 stop36h 25mAir China

Tue 23/1220:25LHR - GMP

1 stop31h 40mAir China

Deal found 17/9£496

Thu 26/213:05ICN - LHR

2 stops28h 00mLufthansa

Wed 4/307:40LHR - ICN

2 stops18h 10mLufthansa

Deal found 17/9£552

Mon 15/1223:45ICN - LHR

1 stop18h 35mScandinavian Airlines

Wed 14/119:50LHR - ICN

2 stops38h 10mScandinavian Airlines

Deal found 17/9£555

Sat 13/1213:45GMP - LHR

1 stop37h 10mChina Southern

Tue 23/1221:30LHR - GMP

1 stop29h 55mChina Southern

Deal found 17/9£541

Mon 1/1213:05ICN - LHR

2 stops28h 00mLufthansa

Fri 5/1207:40LHR - ICN

1 stop18h 35mLufthansa

Deal found 16/9£556

Direct flights from Seoul to Heathrow
Explore direct flight options from Seoul to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 September 2025.

Tue 21/1012:20ICN - LHR

Nonstop14h 30mAsiana Airlines

Mon 3/1120:10LHR - ICN

Nonstop12h 35mAsiana Airlines

Deal found 15/9£506

Sun 26/1012:25ICN - LHR

Nonstop14h 40mAsiana Airlines

Tue 28/1020:10LHR - ICN

Nonstop12h 35mAsiana Airlines

Deal found 16/9£507

Fri 24/1012:20ICN - LHR

Nonstop14h 30mAsiana Airlines

Thu 30/1020:10LHR - ICN

Nonstop12h 35mAsiana Airlines

Deal found 16/9£508

Mon 20/1012:20ICN - LHR

Nonstop14h 30mAsiana Airlines

Fri 31/1020:10LHR - ICN

Nonstop12h 35mAsiana Airlines

Deal found 16/9£508

Wed 22/1012:20ICN - LHR

Nonstop14h 30mAsiana Airlines

Fri 31/1020:10LHR - ICN

Nonstop12h 35mAsiana Airlines

Deal found 15/9£509

Tue 4/1112:25ICN - LHR

Nonstop14h 40mAsiana Airlines

Tue 18/1120:10LHR - ICN

Nonstop12h 35mAsiana Airlines

Deal found 17/9£512

Tue 18/1112:25ICN - LHR

Nonstop14h 40mAsiana Airlines

Sun 23/1120:10LHR - ICN

Nonstop12h 35mAsiana Airlines

Deal found 17/9£513

Mon 10/1112:25ICN - LHR

Nonstop14h 40mAsiana Airlines

Thu 20/1120:10LHR - ICN

Nonstop12h 35mAsiana Airlines

Deal found 17/9£514

Wed 15/1012:20ICN - LHR

Nonstop14h 30mAsiana Airlines

Tue 21/1020:40LHR - ICN

Nonstop12h 50mAsiana Airlines

Deal found 15/9£514

Mon 15/1212:25ICN - LHR

Nonstop14h 40mAsiana Airlines

Tue 23/1220:10LHR - ICN

Nonstop12h 35mAsiana Airlines

Deal found 17/9£515

Sun 14/1212:25ICN - LHR

Nonstop14h 40mAsiana Airlines

Tue 23/1220:10LHR - ICN

Nonstop12h 35mAsiana Airlines

Deal found 17/9£519

Mon 15/1212:25ICN - LHR

Nonstop14h 40mAsiana Airlines

Tue 30/1220:10LHR - ICN

Nonstop12h 35mAsiana Airlines

Deal found 16/9£522

Last-minute flights from Seoul to Heathrow
Discover last-minute flight deals from Seoul to Heathrow. Data last updated 18 September 2025 and is based on user searches.

Sun 28/920:50GMP - LHR

1 stop29h 50mChina Eastern

Sun 5/1021:20LHR - GMP

1 stop29h 40mChina Eastern

Deal found 17/9£710

Mon 13/1010:05ICN - LHR

1 stop19h 40mSWISS

Sun 19/1017:15LHR - ICN

2 stops55h 10mSWISS

Deal found 15/9£511

Wed 15/1012:20ICN - LHR

Nonstop14h 30mAsiana Airlines

Wed 22/1020:40LHR - ICN

Nonstop12h 50mAsiana Airlines

Deal found 17/9£514

Wed 15/1012:20ICN - LHR

Nonstop14h 30mAsiana Airlines

Tue 21/1020:40LHR - ICN

Nonstop12h 50mAsiana Airlines

Deal found 15/9£514

Thu 16/1020:15ICN - LHR

2 stops30h 25mMultiple Airlines

Wed 22/1021:00LHR - ICN

1 stop17h 10mMultiple Airlines

Deal found 16/9£512

Mon 20/1012:20ICN - LHR

Nonstop14h 30mAsiana Airlines

Fri 31/1020:10LHR - ICN

Nonstop12h 35mAsiana Airlines

Deal found 16/9£508

Tue 21/1012:20ICN - LHR

Nonstop14h 30mAsiana Airlines

Mon 3/1120:10LHR - ICN

Nonstop12h 35mAsiana Airlines

Deal found 15/9£506

Wed 22/1012:20ICN - LHR

Nonstop14h 30mAsiana Airlines

Fri 31/1020:10LHR - ICN

Nonstop12h 35mAsiana Airlines

Deal found 15/9£509

Sat 25/1000:10ICN - LHR

1 stop24h 15mMultiple Airlines

Sat 1/1121:00LHR - ICN

1 stop33h 20mMultiple Airlines

Deal found 16/9£507

Sat 25/1023:45ICN - LHR

1 stop25h 15mScandinavian Airlines

Wed 5/1119:50LHR - ICN

2 stops38h 10mScandinavian Airlines

Deal found 14/9£513

Mon 27/1012:25ICN - LHR

Nonstop14h 40mAsiana Airlines

Sun 2/1120:10LHR - ICN

Nonstop12h 35mAsiana Airlines

Deal found 16/9£508

Mon 27/1023:45ICN - LHR

2 stops23h 50mScandinavian Airlines

Thu 13/1118:40LHR - ICN

1 stop15h 20mScandinavian Airlines

Deal found 15/9£511

One-way flights from Seoul to Heathrow
Search for one-way flight options from Seoul to Heathrow. Find affordable one-way fares based on user searches. Data last updated 18 September 2025.

Mon 10/1120:30GMP - LHR

2 stops54h 00mMultiple Airlines

Deal found 17/9£213

Mon 10/1119:30ICN - LHR

2 stops46h 25mMultiple Airlines

Deal found 17/9£234

Wed 8/1011:00ICN - LHR

1 stop37h 35mMalaysia Airlines

Deal found 17/9£235

Mon 1/1219:50ICN - LHR

2 stops46h 05mMultiple Airlines

Deal found 16/9£237

Thu 11/1218:25ICN - LHR

3 stops29h 20mMultiple Airlines

Deal found 17/9£237

Mon 17/1118:25ICN - LHR

3 stops32h 35mMultiple Airlines

Deal found 15/9£241

Tue 4/1120:50ICN - LHR

2 stops29h 40mChina Eastern

Deal found 15/9£242

Wed 5/1120:50ICN - LHR

2 stops29h 40mChina Eastern

Deal found 15/9£243

Mon 3/1113:45GMP - LHR

1 stop37h 10mChina Southern

Deal found 16/9£243

Wed 10/1220:50ICN - LHR

2 stops29h 40mChina Eastern

Deal found 15/9£243

Wed 26/1120:50ICN - LHR

2 stops29h 40mChina Eastern

Deal found 17/9£244

Thu 16/1020:15ICN - LHR

2 stops30h 25mChina Eastern

Deal found 16/9£245

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seoul to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Thu 18/12

13:45-17:55

1 stop37h 10m

London Heathrow

Sat 17/1

21:30-12:25

1 stop29h 55m

£449

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Tue 16/12

13:45-17:55

1 stop37h 10m

London Heathrow

Sun 11/1

21:30-12:25

1 stop29h 55m

£449

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Sat 15/11

14:25-17:50

1 stop36h 25m

London Heathrow

Wed 19/11

21:00-11:00

1 stop29h 00m

£450

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Fri 19/12

14:25-15:55

1 stop34h 30m

London Heathrow

Thu 1/1

17:40-13:05

1 stop34h 25m

£451

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Thu 18/12

13:45-17:55

1 stop37h 10m

London Heathrow

Sun 28/12

21:30-12:25

1 stop29h 55m

£454

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Sun 12/10

13:30-18:05

1 stop36h 35m

London Heathrow

Sun 19/10

21:00-12:25

1 stop31h 25m

£459

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Sat 11/10

20:50-18:40

1 stop29h 50m

London Heathrow

Mon 27/10

21:00-11:00

1 stop29h 00m

£459

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Fri 24/10

14:25-20:30

1 stop14h 05m

London Heathrow

Sat 1/11

20:25-13:05

1 stop31h 40m

£466

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Sun 14/12

14:25-17:50

1 stop36h 25m

London Heathrow

Tue 23/12

20:25-13:05

1 stop31h 40m

£496

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Mon 15/12

14:25-17:50

1 stop36h 25m

London Heathrow

Tue 23/12

20:25-13:05

1 stop31h 40m

£496

Flights are sorted by cheapest return flights first.

Deals found on 17/9

Showing 1-10 of 44 results

...

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?

Booking 67 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, January is the cheapest month in which you can book a flight from Seoul to London Heathrow Airport (average of £112). Flying from Seoul to London Heathrow Airport in August is currently the most expensive (average of £164). 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?

A simple way to save on the total cost of your ticket is to fly from Seoul to London Heathrow Airport in the evening. If you’re flexible enough to do this you can expect to save up to 39% on your trip compared to booking a flight at midday.

Weekly flight availability from Seoul to London Heathrow Airport

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?

Beijing (PEK) – chosen by Cheapflights users on 27% 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?

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?

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?

Flights via Frankfurt am Main (FRA) offer the fastest connection on this route, with an average stopover time of 1h 28m.

Reviews of airlines servicing Heathrow

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

1,140 reviews

Check prices

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

1,140 reviews

Korean Air

8.4

Very Good

1,140 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

Asiana Airlines

8.2

Very Good

481 reviews

Korean Air

8.4

Very Good

1,140 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

China Eastern

7.2

Good

166 reviews

Korean Air

8.4

Very Good

1,140 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

Related info for your journey

How long is the flight from Seoul to London Heathrow Airport?
China Southern, Air China, and Scandinavian Airlines can get you from Seoul to London Heathrow Airport in just under 18h 35m. Your travel time can differ by up to 18h 35m. 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 Asiana Airlines and Korean Air. 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 SWISS, with whom users have recently found tickets for as low as £304. However, be on the lookout for offers from Qatar Airways and Emirates, 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: Virgin Atlantic (69%), Korean Air (62%), Asiana Airlines (42%).
What are the cheapest flights from Seoul to London Heathrow Airport?
Looking at all options, your cheapest flight can be booked for £380. While the most popular route (Incheon Intl - London Heathrow) can be booked for £410 on average, our data indicates £775 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, January is the cheapest month in which you can book a flight from Seoul to London Heathrow Airport (average of £112). Flying from Seoul to London Heathrow Airport in August is currently the most expensive (average of £164). 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

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Slough

Gatwick

Northampton

Luton

Deal

Wembley

Ilford

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Hayes

Watford

Winchester

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Swindon

Dartford

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Brentford

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Seoul to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
China Eastern	Cheapest£348	Average£676	FlexibilityNo cancel fee	On-time62%	Search China Eastern flights
Asiana Airlines	Cheapest£636	Average£734	FlexibilityNo cancel fee	On-time76%	Search Asiana Airlines flights
Korean Air	Cheapest£660	Average£832	FlexibilityNo cancel fee	On-time81%	Search Korean Air flights

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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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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Seoul to London Heathrow Airport from £213

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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Seoul to London Heathrow are usually found in December or March, booked 67 days in advance, depart on a Thursday or Monday and return on a Tuesday

Cheap flight deals from Seoul to Heathrow

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Find flight deals from Seoul to Heathrow

Cheapest flights from Seoul to HeathrowExplore 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 18 September 2025.

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 18 September 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seoul to London Heathrow Airport that are best for you.

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.

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 12 September 2025.

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

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 18 September 2025.

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 18 September 2025.

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.

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.

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.

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.

Reviews of airlines servicing Heathrow

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?

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

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

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

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

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

How can I find direct flights from Seoul to Heathrow?

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

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

Travelling to a place near London Heathrow Airport?

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.

Alternative routes for Seoul to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Seoul to Heathrow

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?

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

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

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

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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 18 September 2025.