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Cheap flights from Seoul to London Heathrow Airport from £147

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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — LHR
19 dez — 26 dez1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Seoul to London Heathrow are usually found in January or December, booked 83 days in advance, depart on a Thursday or Sunday and return on a Tuesday

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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 19 novembro 2025.

sex 19/1214:25GMP - LHR
1 stop36h 25mAir China
ter 13/120:25LHR - GMP
1 stop31h 40mAir China
Deal found 18/11£397
qua 17/1214:25GMP - LHR
1 stop36h 25mAir China
seg 5/120:25LHR - GMP
1 stop31h 40mAir China
Deal found 17/11£398
ter 18/1120:50GMP - LHR
1 stop29h 40mMultiple Airlines
seg 24/1120:25LHR - GMP
1 stop31h 40mMultiple Airlines
Deal found 17/11£401
ter 18/1120:50GMP - LHR
1 stop29h 40mChina Eastern
ter 25/1121:00LHR - GMP
1 stop29h 00mChina Eastern
Deal found 16/11£404
qui 27/1114:25GMP - LHR
1 stop36h 25mMultiple Airlines
ter 2/1221:30LHR - GMP
1 stop29h 55mMultiple Airlines
Deal found 17/11£408
qui 18/1213:30GMP - LHR
1 stop37h 25mChina Southern
sáb 10/121:30LHR - GMP
1 stop29h 55mChina Southern
Deal found 16/11£411
ter 23/1214:25GMP - LHR
1 stop36h 25mAir China
seg 5/120:25LHR - GMP
1 stop31h 40mAir China
Deal found 18/11£411
ter 16/1214:25GMP - LHR
1 stop34h 30mAir China
sáb 3/120:25LHR - GMP
1 stop31h 40mAir China
Deal found 17/11£413
ter 23/1214:25GMP - LHR
1 stop36h 25mAir China
qui 15/117:40LHR - GMP
1 stop34h 25mAir China
Deal found 16/11£417
qua 19/1114:25GMP - LHR
1 stop36h 25mAir China
seg 24/1117:40LHR - GMP
1 stop34h 25mAir China
Deal found 17/11£417
ter 18/1116:20ICN - LHR
1 stop34h 10mChina Eastern
qui 27/1121:00LHR - ICN
1 stop33h 05mChina Eastern
Deal found 18/11£436
ter 18/1116:10ICN - LHR
1 stop34h 20mChina Eastern
sáb 22/1121:00LHR - ICN
1 stop35h 25mChina Eastern
Deal found 17/11£436

Cheap 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 19 novembro 2025.

Round-trip from

£397

One-way from

£147

Popular in

October

Cheapest in

January

Average price

£569

Good round-trip deal

£531 or less

Good one-way deal

£288 or less
Air China
  • Air China
  • 19/12-13/1
  • 2 total stops
  • 68h 05m total
  • Seoul to London
Search Deals
Air China
  • Air China
  • 11/1
  • 1 total stop
  • 34h 05m total
  • Seoul to London
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£42 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 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 19 novembro 2025.
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

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

sex 19/12

14:25-17:50

1 stop36h 25m

London Heathrow

ter 13/1

20:25-13:05

1 stop31h 40m

£404

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

ter 23/12

14:25-17:50

1 stop36h 25m

London Heathrow

sáb 3/1

20:25-13:05

1 stop31h 40m

£436

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

qui 22/1

14:25-15:55

1 stop34h 30m

London Heathrow

sáb 31/1

20:25-13:05

1 stop31h 40m

£444

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

seg 26/1

14:25-15:55

1 stop34h 30m

London Heathrow

sáb 7/2

20:25-13:05

1 stop31h 40m

£448

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

qua 14/1

14:25-15:55

1 stop34h 30m

London Heathrow

dom 25/1

21:30-12:25

1 stop29h 55m

£450

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

dom 18/1

14:25-15:55

1 stop34h 30m

London Heathrow

seg 26/1

20:25-13:05

1 stop31h 40m

£451

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

dom 21/12

23:45-12:05

1 stop21h 20m

London Heathrow

sáb 10/1

13:55-21:55

1 stop23h 00m

£474

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

ter 23/12

14:25-17:50

1 stop36h 25m

London Heathrow

qua 31/12

17:40-13:05

1 stop34h 25m

£481

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

qua 17/12

14:15-19:10

2 stops61h 55m

London Heathrow

qua 7/1

21:10-13:15

2 stops31h 05m

£482

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

seg 26/1

23:45-16:25

2 stops25h 40m

London Heathrow

qua 11/2

19:50-19:00

2 stops38h 10m

£489

Flights are sorted by cheapest return flights first.

Deals found on 18/11

Showing 1-10 of 43 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 14 November 2025.

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, November is the cheapest month in which you can book a flight from Seoul to London Heathrow Airport (average of £357). Flying from Seoul to London Heathrow Airport in July is currently the most expensive (average of £579). 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 19 novembro 2025.

A simple way to save on the total cost of your ticket is to fly from Seoul to London Heathrow Airport in the afternoon. If you’re flexible enough to do this you can expect to save up to 33% on your trip compared to booking a flight at midday.

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 19 novembro 2025.

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 20% 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 £409.

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.

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

Over the past year, Korean Air have had the lowest number of delays on this route, with no flights being classified as 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 19 novembro 2025.
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
1,167 reviews
Check prices

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

Crew

8.7

Food

8.1

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
1,167 reviews
Korean Air
8.4
Very Good
1,167 reviews
Check prices

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

Crew

8.7

Food

8.1

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
8.2
Very Good
487 reviews
Korean Air
8.4
Very Good
1,167 reviews
Check prices

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

Crew

8.7

Food

8.1

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
178 reviews
Korean Air
8.4
Very Good
1,167 reviews
Check prices

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

Crew

8.7

Food

8.1

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?

    Air China, Etihad Airways, and Shenzhen Airlines can get you from Seoul to London Heathrow Airport in just under 21h 20m. Your travel time can differ by up to 40h 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 £361, 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 47% 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 Air China, with whom users have recently found tickets for as low as £148. However, be on the lookout for offers from China Southern and Malaysia Airlines, 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 (51%), Korean Air (49%), Asiana Airlines (34%).

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

    Looking at all options, your cheapest flight can be booked for £286. While the most popular route (Incheon Intl - London Heathrow) can be booked for £350 on average, our data indicates £752 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, November is the cheapest month in which you can book a flight from Seoul to London Heathrow Airport (average of £357). Flying from Seoul to London Heathrow Airport in July is currently the most expensive (average of £579). 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
Croydon
Slough
Gatwick
Hounslow
Northampton
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Swindon
Crawley
Brentford
Romford
Chichester
Ipswich

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Seoul to Heathrow

Discover the top 3 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 19 novembro 2025.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest£361Average£690FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Asiana AirlinesCheapest£513Average£749FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Korean AirCheapest£737Average£838FlexibilityNo 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?

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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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