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Cheap flights from London Heathrow Airport to Seoul from £245

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Seoul departing on 14/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London Heathrow Airport to Seoul

Cheap return flights

Enter your travel dates to find the best prices.
Air China Logo
20:25 - 21:55
LHR
-
ICN
16h 30m
1 stop
Air China Logo
13:05 - 20:25
ICN
-
LHR
15h 20m
1 stop
£354Air China
Thu, 12 Mar - Sun, 29 Mar
China Eastern Logo
21:20 - 11:15
LHR
-
ICN
29h 55m
2 stops
China Eastern Logo
20:15 - 18:40
ICN
-
LHR
30h 25m
2 stops
£356China Eastern
Thu, 23 Apr - Tue, 12 May
China Eastern Logo
21:20 - 11:15
LHR
-
ICN
29h 55m
2 stops
China Eastern Logo
20:15 - 18:40
ICN
-
LHR
30h 25m
2 stops
£358China Eastern
Thu, 23 Apr - Tue, 12 May
China Eastern Logo
21:20 - 15:10
LHR
-
ICN
33h 50m
1 stop
China Eastern Logo
12:55 - 18:40
ICN
-
LHR
37h 45m
1 stop
£362China Eastern
Tue, 12 May - Mon, 25 May
China Eastern Logo
21:20 - 11:55
LHR
-
ICN
30h 35m
1 stop
China Eastern Logo
08:55 - 18:40
ICN
-
LHR
17h 45m
1 stop
£363China Eastern
Sat, 25 Apr - Wed, 13 May
China Eastern Logo
21:20 - 20:45
LHR
-
ICN
15h 25m
1 stop
China Eastern Logo
08:55 - 18:40
ICN
-
LHR
17h 45m
1 stop
£364China Eastern
Sat, 25 Apr - Thu, 7 May
China Eastern Logo
21:20 - 14:50
LHR
-
ICN
33h 30m
2 stops
China Eastern Logo
08:55 - 18:40
ICN
-
LHR
17h 45m
1 stop
£368China Eastern
Fri, 1 May - Tue, 19 May
China Eastern Logo
21:20 - 11:00
LHR
-
ICN
29h 40m
2 stops
China Eastern Logo
08:55 - 18:40
ICN
-
LHR
17h 45m
1 stop
£369China Eastern
Mon, 20 Apr - Wed, 13 May
China Eastern Logo
21:20 - 11:15
LHR
-
ICN
29h 55m
2 stops
China Eastern Logo
20:15 - 18:40
ICN
-
LHR
30h 25m
2 stops
£373China Eastern
Fri, 24 Apr - Wed, 13 May
Air China Logo
20:25 - 13:05
LHR
-
GMP
31h 40m
1 stop
Air China Logo
14:25 - 15:55
GMP
-
LHR
34h 30m
1 stop
£375Air China
Wed, 11 Mar - Mon, 16 Mar

China Eastern flights from London Heathrow Airport to Seoul

Our best China Eastern deals on London Heathrow Airport to Seoul flight tickets
China Eastern
23 Apr
LHR21:20London Heathrow
29h 55m
2 stops
ICN11:15Incheon Intl
12 May
ICN20:15Incheon Intl
30h 25m
2 stops
LHR18:40London Heathrow
£356
China Eastern
23 Apr
LHR21:20London Heathrow
29h 55m
2 stops
ICN11:15Incheon Intl
12 May
ICN20:15Incheon Intl
30h 25m
2 stops
LHR18:40London Heathrow
£358
China Eastern
12 May
LHR21:20London Heathrow
33h 50m
1 stop
ICN15:10Incheon Intl
25 May
ICN12:55Incheon Intl
37h 45m
1 stop
LHR18:40London Heathrow
£362

Air China flights from London Heathrow Airport to Seoul

Our best Air China deals on London Heathrow Airport to Seoul flight tickets
Air China
12 Mar
LHR20:25London Heathrow
16h 30m
1 stop
ICN21:55Incheon Intl
29 Mar
ICN13:05Incheon Intl
15h 20m
1 stop
LHR20:25London Heathrow
£354
Air China
11 Mar
LHR20:25London Heathrow
31h 40m
1 stop
GMP13:05Seoul Gimpo Intl
16 Mar
GMP14:25Seoul Gimpo Intl
34h 30m
1 stop
LHR15:55London Heathrow
£375
Air China
11 Mar
LHR20:25London Heathrow
31h 40m
1 stop
GMP13:05Seoul Gimpo Intl
18 Mar
GMP14:25Seoul Gimpo Intl
34h 30m
1 stop
LHR15:55London Heathrow
£376

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Seoul 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, momondo users made 279,928 searches. Data last updated 29 January 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Seoul that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Thu 12/3

20:25-21:55

1 stop16h 30m

Incheon Intl

Sun 29/3

13:05-20:25

1 stop15h 20m

£354

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Thu 23/4

21:20-11:15

2 stops29h 55m

Incheon Intl

Tue 12/5

20:15-18:40

2 stops30h 25m

£356

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Thu 23/4

21:20-11:15

2 stops29h 55m

Incheon Intl

Tue 12/5

20:15-18:40

2 stops30h 25m

£358

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Tue 12/5

21:20-15:10

1 stop33h 50m

Incheon Intl

Mon 25/5

12:55-18:40

1 stop37h 45m

£362

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Sat 25/4

21:20-11:55

1 stop30h 35m

Incheon Intl

Wed 13/5

08:55-18:40

1 stop17h 45m

£363

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Sat 25/4

21:20-20:45

1 stop15h 25m

Incheon Intl

Thu 7/5

08:55-18:40

1 stop17h 45m

£364

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Fri 1/5

21:20-14:50

2 stops33h 30m

Incheon Intl

Tue 19/5

08:55-18:40

1 stop17h 45m

£368

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Mon 20/4

21:20-11:00

2 stops29h 40m

Incheon Intl

Wed 13/5

08:55-18:40

1 stop17h 45m

£369

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Fri 24/4

21:20-11:15

2 stops29h 55m

Incheon Intl

Wed 13/5

20:15-18:40

2 stops30h 25m

£373

LondonSeoul

LHR - GMP

LHRGMP

London Heathrow

Wed 11/3

20:25-13:05

1 stop31h 40m

Seoul Gimpo Intl

Mon 16/3

14:25-15:55

1 stop34h 30m

£375

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to Seoul from

How to get the cheapest flight ticket from London Heathrow Airport to Seoul

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London Heathrow Airport and Seoul?

What is the cheapest month to fly to Seoul?

The month of November is, on average, the cheapest month to fly to Seoul from London Heathrow Airport, with most prices found around £425. If you are unable to visit Seoul during the month of November, then departing from London Heathrow Airport during the month January is also very affordable. Most momondo users find prices during this month for around £463.

What is the cheapest day to depart on your flight to Seoul?

The cheapest day to depart from London Heathrow Airport to Seoul is on a Tuesday when prices can be found for as low as £858. Flights from London Heathrow Airport to Seoul on a Saturday will generally be more expensive and average around £983. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Seoul?

Our most recent data shows that the best time of day to fly to Seoul is at midday. Flights from London Heathrow Airport to Seoul during this time can be as low as £624. Flights in the afternoon are often more expensive, with an average ticket price of £987.

What is the cheapest London Heathrow to Seoul flight route?

Fly from London Heathrow to Incheon Intl for the best London Heathrow - Seoul flight prices

How far in advance should I book a flight to Seoul?

You are more likely to see cheaper flights to Seoul from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Seoul for around £677 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seoul from London Heathrow Airport for as low as £581 on momondo.

What cabin class options are available on London Heathrow to Seoul flights?

There are 4 cabin classes available to choose from on London Heathrow to Seoul flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London Heathrow Airport to Seoul flights?

You could potentially save up to 9% on your flight if you consider stops on a London Heathrow Airport to Seoul flight.

How have London Heathrow Airport to Seoul flight prices changed over time?

As of January 2026, prices for London Heathrow Airport to Seoul flights are approximately 5% cheaper when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Seoul

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Seoul according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Heathrow Airport to Seoul (LHR to SEL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Seoul

Best price found

£423

Fastest flight time

12h 35m

Direct flights

Every day

Airports in Seoul

2 airports
The best one-way flight to Seoul from London Heathrow Airport in the past 72 hours is £423. The best return flight deal from London Heathrow Airport to Seoul found on momondo in the last 72 hours is £598.
The fastest flight from London Heathrow Airport to Seoul takes 12h 35m
Direct flights go from London Heathrow Airport to Seoul every day.
There are 2 airports in Seoul. From London Heathrow Airport there are direct flights to Incheon Intl (ICN).
Search flight deals

  • How far is London Heathrow to Seoul by plane?

    Seoul is 5512.0 mi away from London Heathrow. In terms of flight time, this usually takes a little over 12h 35m.

  • When did momondo last update prices for flights from London Heathrow Airport to Seoul?

    Prices for flights from London Heathrow Airport to Seoul were last updated today.

  • How many operators does momondo search for flights from London Heathrow Airport to Seoul?

  • How old do you have to be to fly from London Heathrow Airport to Seoul?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Seoul.

  • What documentation or ID do you need to fly to Seoul?

    The travel and health documents required for your trip to Seoul can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seoul. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from London Heathrow Airport to Seoul?

  • What is the most popular airline from London Heathrow Airport to Seoul?

Best airlines flying from London Heathrow Airport to Seoul

Compare and see reviews for airlines that fly from London Heathrow Airport to Seoul with momondo
Airline
Rating
Free Cancellation
Price
China EasternPriceFrom £310Free CancellationRating
7.2
192 reviews
Search China Eastern flights
China SouthernPriceFrom £328Free CancellationRating
7.3
136 reviews
Search China Southern flights
Air ChinaPriceFrom £346Free CancellationRating
7.2
138 reviews
Search Air China flights
LufthansaPriceFrom £412Free CancellationRating
6.8
7,756 reviews
Search Lufthansa flights
Scandinavian AirlinesPriceFrom £444Free CancellationRating
7.3
1,674 reviews
Search Scandinavian Airlines flights
Air FrancePriceFrom £477Free CancellationRating
7.4
1,528 reviews
Search Air France flights
Etihad AirwaysPriceFrom £509Free CancellationRating
7.3
1,375 reviews
Search Etihad Airways flights
KLMPriceFrom £517Free CancellationRating
7.7
1,443 reviews
Search KLM flights
LOTPriceFrom £552Free CancellationRating
7.5
1,174 reviews
Search LOT flights
Turkish AirlinesPriceFrom £559Free CancellationRating
7.3
4,207 reviews
Search Turkish Airlines flights

  • Korean Air Flights From London Heathrow Airport to Seoul

    The lowest priced Korean Air flight from London Heathrow Airport to Seoul from the last 72 hours was £643. Generally, Korean Air has 7 flights on this route every week with an average price of £829. Korean Air is rated 8.4/10 by our users.

  • Asiana Airlines Flights From London Heathrow Airport to Seoul

    Asiana Airlines is also a popular choice for this route. Asiana Airlines flight deals for London Heathrow Airport to Seoul start from as low as £667 round-trip, depending on your selected dates, with average Asiana Airlines deals seen on momondo around £817. Asiana Airlines operates 7 flights to Seoul from London Heathrow Airport in an average week. Users have rated it 8.1/10 across 501 reviews.

Why use momondo?

Why should I use momondo to find a flight deal from London to Seoul?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Seoul . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from London to Seoul with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for London to Seoul flights to just show those with flexible booking policies.

How can momondo help me find flights from London to Seoul?

Once all potential London to Seoul flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from London to Seoul right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Seoul, momondo offers a useful price alert feature which will track prices for flights to Seoul from London and alert you when they change.

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Find better results for your trip to South Korea

Fly into one of these airports located in Seoul

Airports listed have a maximum distance of 30.3 mi from Seoul
Seoul Gimpo Intl Airport
Incheon Intl Airport