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Cheap flights from London Heathrow Airport to Seoul from $333

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 1/18. 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 round-trip flights

Enter your travel dates to find the best prices.
China Southern Logo
9:30 pm - 12:25 pm
LHR
-
GMP
29h 55m1 stop
China Southern Logo
1:30 pm - 5:55 pm
GMP
-
LHR
37h 25m1 stop
$497China Southern
Sat, Jan 17 - Wed, Feb 4
China Southern Logo
9:30 pm - 10:15 pm
LHR
-
ICN
15h 45m1 stop
China Southern Logo
9:25 am - 6:35 pm
ICN
-
LHR
18h 10m1 stop
$497China Southern
Sat, Jan 17 - Wed, Feb 4
China Southern Logo
9:30 pm - 12:25 pm
LHR
-
GMP
29h 55m1 stop
China Southern Logo
1:30 pm - 5:55 pm
GMP
-
LHR
37h 25m1 stop
$499China Southern
Thu, Jan 29 - Thu, Feb 5
China Southern Logo
10:00 pm - 3:15 pm
LHR
-
ICN
32h 15m1 stop
China Southern Logo
9:25 am - 5:55 pm
ICN
-
LHR
17h 30m1 stop
$499China Southern
Thu, Jan 29 - Thu, Feb 5
Air China Logo
8:25 pm - 1:05 pm
LHR
-
GMP
31h 40m1 stop
Air China Logo
2:25 pm - 5:50 pm
GMP
-
LHR
36h 25m1 stop
$507Air China
Wed, Mar 11 - Mon, Mar 16
Air China Logo
8:25 pm - 11:40 am
LHR
-
ICN
30h 15m1 stop
Air China Logo
1:10 pm - 3:55 pm
ICN
-
LHR
35h 45m1 stop
$507Air China
Tue, Mar 10 - Tue, Mar 17
Air China Logo
8:25 pm - 1:05 pm
LHR
-
GMP
31h 40m1 stop
Air China Logo
2:25 pm - 3:55 pm
GMP
-
LHR
34h 30m1 stop
$508Air China
Wed, Mar 11 - Wed, Mar 18
Multiple Airlines Logo
9:00 pm - 8:45 pm
LHR
-
ICN
14h 45m1 stop
Multiple Airlines Logo
2:50 pm - 5:50 pm
ICN
-
LHR
36h 00m1 stop
$509Multiple Airlines
Mon, Jan 12 - Mon, Jan 19
China Eastern Logo
9:00 pm - 12:15 pm
LHR
-
ICN
30h 15m2 stops
China Eastern Logo
8:55 am - 5:30 pm
ICN
-
LHR
17h 35m1 stop
$516China Eastern
Fri, Jan 23 - Fri, Jan 30
China Eastern Logo
9:00 pm - 8:45 pm
LHR
-
ICN
14h 45m1 stop
China Eastern Logo
6:25 pm - 5:30 pm
ICN
-
LHR
32h 05m1 stop
$519China Eastern
Mon, Jan 12 - Mon, Jan 19

China Southern flights from London Heathrow Airport to Seoul

Our best China Southern deals on London Heathrow Airport to Seoul flight tickets
China Southern
Jan 17
LHR9:30 pmLondon Heathrow
15h 45m
1 stop
ICN10:15 pmIncheon Intl
Feb 4
ICN9:25 amIncheon Intl
18h 10m
1 stop
LHR6:35 pmLondon Heathrow
$497
Find similar
China Southern
Jan 29
LHR10:00 pmLondon Heathrow
32h 15m
1 stop
ICN3:15 pmIncheon Intl
Feb 5
ICN9:25 amIncheon Intl
17h 30m
1 stop
LHR5:55 pmLondon Heathrow
$499
Find similar
China Southern
Mar 11
LHR9:30 pmLondon Heathrow
15h 45m
1 stop
ICN10:15 pmIncheon Intl
Mar 17
ICN2:50 pmIncheon Intl
36h 45m
1 stop
LHR6:35 pmLondon Heathrow
$520
Find similar

Air China flights from London Heathrow Airport to Seoul

Our best Air China deals on London Heathrow Airport to Seoul flight tickets
Air China
Mar 10
LHR8:25 pmLondon Heathrow
30h 15m
1 stop
ICN11:40 amIncheon Intl
Mar 17
ICN1:10 pmIncheon Intl
35h 45m
1 stop
LHR3:55 pmLondon Heathrow
$507
Find similar
Air China
Jan 29
LHR5:40 pmLondon Heathrow
13h 55m
1 stop
ICN4:35 pmIncheon Intl
Feb 5
ICN11:10 amIncheon Intl
15h 40m
1 stop
LHR5:50 pmLondon Heathrow
$508
Find similar
Air China
Jan 12
LHR5:40 pmLondon Heathrow
34h 25m
1 stop
GMP1:05 pmSeoul Gimpo Intl
Jan 19
GMP2:25 pmSeoul Gimpo Intl
36h 25m
1 stop
LHR5:50 pmLondon Heathrow
$523
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated December 15, 2025.
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

LondonSeoul

LHR - GMP

LHRGMP

London Heathrow

Sat 1/17

9:30 pm-12:25 pm

1 stop29h 55m

Seoul Gimpo Intl

Wed 2/4

1:30 pm-5:55 pm

1 stop37h 25m

$497

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Sat 1/17

9:30 pm-10:15 pm

1 stop15h 45m

Incheon Intl

Wed 2/4

9:25 am-6:35 pm

1 stop18h 10m

$497

LondonSeoul

LHR - GMP

LHRGMP

London Heathrow

Thu 1/29

9:30 pm-12:25 pm

1 stop29h 55m

Seoul Gimpo Intl

Thu 2/5

1:30 pm-5:55 pm

1 stop37h 25m

$499

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Thu 1/29

10:00 pm-3:15 pm

1 stop32h 15m

Incheon Intl

Thu 2/5

9:25 am-5:55 pm

1 stop17h 30m

$499

LondonSeoul

LHR - GMP

LHRGMP

London Heathrow

Wed 3/11

8:25 pm-1:05 pm

1 stop31h 40m

Seoul Gimpo Intl

Mon 3/16

2:25 pm-5:50 pm

1 stop36h 25m

$507

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Tue 3/10

8:25 pm-11:40 am

1 stop30h 15m

Incheon Intl

Tue 3/17

1:10 pm-3:55 pm

1 stop35h 45m

$507

LondonSeoul

LHR - GMP

LHRGMP

London Heathrow

Wed 3/11

8:25 pm-1:05 pm

1 stop31h 40m

Seoul Gimpo Intl

Wed 3/18

2:25 pm-3:55 pm

1 stop34h 30m

$508

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Mon 1/12

9:00 pm-8:45 pm

1 stop14h 45m

Incheon Intl

Mon 1/19

2:50 pm-5:50 pm

1 stop36h 00m

$509

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Fri 1/23

9:00 pm-12:15 pm

2 stops30h 15m

Incheon Intl

Fri 1/30

8:55 am-5:30 pm

1 stop17h 35m

$516

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Mon 1/12

9:00 pm-8:45 pm

1 stop14h 45m

Incheon Intl

Mon 1/19

6:25 pm-5:30 pm

1 stop32h 05m

$519

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 January is another great option to travel to Seoul, with average flight prices from London Heathrow Airport averaging around $686.

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

According to our data, Sunday is the cheapest day to fly to Seoul from London Heathrow Airport. The lowest ticket price found for a Sunday departure recently was $1,179. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Seoul is Thursday, with ticket prices averaging around $1,286.

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

Flying to Seoul from London Heathrow Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $735 when looking at flights departing in the morning. In the evening is when there is more demand to fly to Seoul, so prices are often more expensive at around $1,245 per ticket.

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 $937 when searching weeks out. 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 $798 on momondo.

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

There are 3 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 3% 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 December 2025, prices for London Heathrow Airport to Seoul flights are approximately 23% 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 round-trip 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

$649

Fastest flight time

12h 20m

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 $649. The best round-trip flight deal from London Heathrow Airport to Seoul found on momondo in the last 72 hours is $1,068.
The fastest flight from London Heathrow Airport to Seoul takes 12h 20m
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?

    London Heathrow and Seoul are 5512.0 mi apart from one another. A reasonable flight in good conditions will take 12h 20m.

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

    Prices for flights from London Heathrow Airport to Seoul are updated daily.

  • 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 necessary travel and health documents for your Seoul trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • 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
Air ChinaPriceFrom $530Free CancellationRating
7.2
127 reviews
Search Air China flights
LufthansaPriceFrom $620Free CancellationRating
6.8
7,628 reviews
Search Lufthansa flights
Korean AirPriceFrom $821Free CancellationRating
8.4
1,186 reviews
Search Korean Air flights
Asiana AirlinesPriceFrom $947Free CancellationRating
8.2
493 reviews
Search Asiana 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 $821. Generally, Korean Air has 7 flights on this route every week with an average price of $1,182. Korean Air is rated 8.4/10 by our users.

  • Asiana Airlines Flights From London Heathrow Airport to Seoul

    The best Asiana Airlines deal for London Heathrow Airport to Seoul flight tickets found on momondo in the last 72 hours was $947, round-trip. It should be noted that an average Asiana Airlines flight deal for this route in this time was higher, at $1,294 round-trip. Asiana Airlines operates 7 flights out of London Heathrow Airport into Seoul in an average week, so prices vary by time and availability. 493 Asiana Airlines reviews by users on momondo have scored the airline at 8.2/10.

Why use momondo?

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

It is quick and easy to find London to Seoul flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seoul that suits you.

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

All flight searches from London to Seoul on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seoul from London.

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

Yes. momondo can track prices for London to Seoul flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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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