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Cheap flights from Seoul 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 14/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — LHR
2 May — 9 May1
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 83 days in advance, depart on a Friday or Thursday and return on a Wednesday

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 2 April 2026.

Thu 14/517:50
ICN
-
LHR
1 stop29h 15m
Etihad Airways
Sat 23/520:45
LHR
-
ICN
1 stop17h 15m
Etihad Airways
Deal found 30/3£388
Thu 14/517:50
ICN
-
LHR
1 stop29h 15m
Etihad Airways
Thu 21/509:30
LHR
-
ICN
1 stop28h 30m
Etihad Airways
Deal found 29/3£400
Tue 12/513:30
GMP
-
LHR
1 stop36h 35m
China Southern
Thu 11/621:00
LHR
-
GMP
1 stop31h 25m
China Southern
Deal found 31/3£402
Fri 18/1223:45
ICN
-
LHR
1 stop39h 55m
Etihad Airways
Thu 4/213:55
LHR
-
ICN
1 stop35h 50m
Etihad Airways
Deal found 30/3£403
Fri 25/1223:45
ICN
-
LHR
1 stop39h 55m
Etihad Airways
Thu 4/213:55
LHR
-
ICN
1 stop35h 50m
Etihad Airways
Deal found 30/3£404
Thu 14/517:50
ICN
-
LHR
1 stop29h 15m
Etihad Airways
Thu 28/509:30
LHR
-
ICN
1 stop28h 30m
Etihad Airways
Deal found 29/3£406
Thu 7/517:50
ICN
-
LHR
1 stop21h 10m
Etihad Airways
Wed 20/521:45
LHR
-
ICN
1 stop29h 05m
Etihad Airways
Deal found 29/3£409
Thu 17/1217:50
ICN
-
LHR
1 stop33h 20m
Etihad Airways
Thu 4/213:55
LHR
-
ICN
1 stop35h 50m
Etihad Airways
Deal found 30/3£411
Thu 14/518:25
ICN
-
LHR
1 stop32h 15m
China Eastern
Sun 24/521:20
LHR
-
ICN
1 stop30h 35m
China Eastern
Deal found 28/3£413
Fri 5/617:45
ICN
-
LHR
1 stop29h 20m
Etihad Airways
Sun 14/620:50
LHR
-
ICN
1 stop17h 15m
Etihad Airways
Deal found 29/3£415
Thu 11/617:45
ICN
-
LHR
1 stop29h 20m
Etihad Airways
Sun 21/620:50
LHR
-
ICN
1 stop17h 15m
Etihad Airways
Deal found 29/3£417
Thu 4/613:30
GMP
-
LHR
1 stop36h 35m
China Southern
Thu 11/621:00
LHR
-
GMP
1 stop31h 25m
China Southern
Deal found 31/3£476

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 2 April 2026.

Round-trip from

£388

One-way from

£149

Popular in

October

Cheapest in

November

Average price

£693

Good round-trip deal

£549 or less

Good one-way deal

£299 or less
Etihad Airways
  • Etihad Airways
  • 14/5-23/5
  • 2 total stops
  • 46h 30m total
  • Seoul to London
Search Deals
China Eastern
  • China Eastern
  • 14/6
  • 1 total stop
  • 36h 10m 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 (£19 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 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 2 April 2026.
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

Cheapest return flight
Fastest return journey

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 22/6

17:45-07:00

1 stop21h 15m

London Heathrow

Sun 5/7

21:45-22:05

1 stop16h 20m

£448

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Tue 12/5

13:30-18:05

1 stop36h 35m

London Heathrow

Tue 19/5

21:00-12:25

1 stop31h 25m

£586

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 8/7

01:35-12:45

1 stop19h 10m

London Heathrow

Sat 18/7

14:45-22:05

1 stop23h 20m

£655

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Sun 30/8

15:15-19:50

1 stop36h 35m

London Heathrow

Sat 12/9

22:05-16:45

1 stop34h 40m

£658

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Fri 25/9

23:35-18:30

2 stops26h 55m

London Heathrow

Sat 24/10

17:30-19:00

2 stops41h 30m

£688

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Thu 30/4

23:55-12:25

1 stop20h 30m

London Heathrow

Sat 9/5

19:50-17:00

1 stop37h 10m

£693

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Thu 7/5

13:30-18:05

1 stop36h 35m

London Heathrow

Wed 20/5

21:00-12:25

1 stop31h 25m

£725

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 20/4

00:15-20:25

1 stop28h 10m

London Heathrow

Thu 23/4

12:00-18:05

2 stops22h 05m

£762

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Thu 16/4

23:45-13:55

1 stop22h 10m

London Heathrow

Wed 6/5

10:50-17:30

2 stops22h 40m

£780

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 9/9

23:35-18:30

1 stop26h 55m

London Heathrow

Tue 22/9

10:35-18:35

2 stops24h 00m

£780

Flights are sorted by cheapest return flights first.

Deals found on 28/3

Showing 1-10 of 46 resultsSorted by cheapest first
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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 13 March 2026.

Booking 83 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, February is the cheapest month in which you can book a flight from Seoul to London Heathrow Airport (average of £345). Flying from Seoul to London Heathrow Airport in August is currently the most expensive (average of £552). 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 2 April 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 2 April 2026.

The most flights from SEL 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 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 21% 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 £405.

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 2 April 2026.
Read reviews from past customers who have flown with Korean Air,Asiana Airlines, andVirgin Atlantic 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
1,203 reviews
Check prices

Boarding

8.5

Comfort

8.3

Food

8.1

Crew

8.7

Overall

8.4

Entertainment

8.2

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
1,203 reviews
Korean Air
8.4
Very Good
1,203 reviews
Check prices

Boarding

8.5

Comfort

8.3

Food

8.1

Crew

8.7

Overall

8.4

Entertainment

8.2

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
509 reviews
Korean Air
8.4
Very Good
1,203 reviews
Check prices

Boarding

8.5

Comfort

8.3

Food

8.1

Crew

8.7

Overall

8.4

Entertainment

8.2

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
685 reviews
Korean Air
8.4
Very Good
1,203 reviews
Check prices

Boarding

8.5

Comfort

8.3

Food

8.1

Crew

8.7

Overall

8.4

Entertainment

8.2

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
145 reviews
Korean Air
8.4
Very Good
1,203 reviews
Check prices

Boarding

8.5

Comfort

8.3

Food

8.1

Crew

8.7

Overall

8.4

Entertainment

8.2

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?

    Etihad Airways, China Southern, and Shenzhen Airlines can get you from Seoul to London Heathrow Airport in just under 21h 15m. Your travel time can differ by up to 15h 20m. 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?

    Air China, at £444, was found to be the cheapest airline from Seoul to London Heathrow Airport.Alternate airlines flying return to your destination include Asiana Airlines and Virgin Atlantic. These flights start at 34% 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 Eastern, with whom users have recently found tickets for as low as £121. However, be on the lookout for offers from Air China and Virgin Atlantic, 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 (90%), Korean Air (88%), Asiana Airlines (72%).

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

    Looking at all options, your cheapest flight can be booked for £134. While the most popular route (Incheon Intl - London Heathrow) can be booked for £385 on average, our data indicates £727 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, February is the cheapest month in which you can book a flight from Seoul to London Heathrow Airport (average of £345). Flying from Seoul to London Heathrow Airport in August is currently the most expensive (average of £552). 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
Northampton
Hounslow
Gatwick
Slough
Ilford
Luton
Hayes
Brentford
Colchester
Guildford
Watford
Kingston upon Thames
Romford
Eastbourne
Swindon
Bedford
Chelmsford

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 2 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest£444Average£581FlexibilityNo cancel feeOn-time67%
Search Air China flights
Asiana AirlinesCheapest£485Average£566FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Virgin AtlanticCheapest£497Average£700FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Korean AirCheapest£623Average£829FlexibilityNo 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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