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Cheap flights from Seoul to London from $250

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seoul to London departing on 11/8. 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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Cheap round-trip flights

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Air China Logo
2:25 pm - 5:50 pmGMP-LHR
36h 25m1 stop
Air China Logo
8:25 pm - 1:05 pmLHR-GMP
31h 40m1 stop
$555Air China
Find Deal
Wed, Nov 19 - Tue, Nov 25
Air China Logo
2:25 pm - 3:55 pmGMP-LHR
34h 30m1 stop
Air China Logo
5:40 pm - 1:05 pmLHR-GMP
34h 25m1 stop
$576Air China
Find Deal
Tue, Dec 2 - Tue, Dec 9
Malaysia Airlines Logo
12:10 am - 3:25 pmICN-LHR
24h 15m1 stop
Malaysia Airlines Logo
10:25 am - 6:30 amLHR-ICN
35h 05m1 stop
$652Malaysia Airlines
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Wed, Nov 26 - Tue, Dec 2
Asiana Airlines Logo
12:25 pm - 6:05 pmICN-LHR
14h 40mnonstop
Asiana Airlines Logo
8:10 pm - 5:50 pmLHR-ICN
12h 40mnonstop
$667Asiana Airlines
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Thu, Nov 27 - Wed, Dec 3
Asiana Airlines Logo
12:25 pm - 6:05 pmICN-LHR
14h 40mnonstop
Asiana Airlines Logo
8:10 pm - 5:50 pmLHR-ICN
12h 40mnonstop
$676Asiana Airlines
Find Deal
Tue, Dec 2 - Tue, Dec 9
Malaysia Airlines Logo
12:10 am - 3:25 pmICN-LHR
24h 15m1 stop
Malaysia Airlines Logo
9:25 pm - 6:30 amLHR-ICN
24h 05m1 stop
$677Malaysia Airlines
Find Deal
Wed, Feb 25 - Thu, Feb 26
Lufthansa Logo
1:30 pm - 9:00 pmICN-LHR
16h 30m1 stop
Lufthansa Logo
7:40 am - 10:50 amLHR-ICN
18h 10m2 stops
$702Lufthansa
Find Deal
Wed, Dec 3 - Wed, Dec 10
Lufthansa Logo
1:30 pm - 9:00 pmICN-LHR
16h 30m1 stop
Lufthansa Logo
6:35 am - 10:50 amLHR-ICN
19h 15m2 stops
$705Lufthansa
Find Deal
Sun, Jan 18 - Fri, Jan 23
Etihad Airways Logo
5:50 pm - 2:30 pmICN-LHR
29h 40m1 stop
Etihad Airways Logo
8:55 pm - 9:55 pmLHR-ICN
16h 00m1 stop
$726Etihad Airways
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Tue, Feb 24 - Sun, Mar 1
Etihad Airways Logo
5:50 pm - 2:30 pmICN-LHR
29h 40m1 stop
Etihad Airways Logo
8:55 pm - 9:55 pmLHR-ICN
16h 00m1 stop
$727Etihad Airways
Find Deal
Tue, Feb 24 - Thu, Mar 5

Air China flights from Seoul to London Heathrow Airport

Our best Air China deals on Seoul to London Heathrow Airport flight tickets
Air China
Nov 19
GMP2:25 pmSeoul Gimpo Intl
36h 25m
1 stop
LHR5:50 pmLondon Heathrow
Nov 25
LHR8:25 pmLondon Heathrow
31h 40m
1 stop
GMP1:05 pmSeoul Gimpo Intl
$555
Find similar
Air China
Dec 2
GMP2:25 pmSeoul Gimpo Intl
34h 30m
1 stop
LHR3:55 pmLondon Heathrow
Dec 9
LHR5:40 pmLondon Heathrow
34h 25m
1 stop
GMP1:05 pmSeoul Gimpo Intl
$576
Find similar
Air China
Nov 16
GMP2:25 pmSeoul Gimpo Intl
34h 30m
1 stop
LHR3:55 pmLondon Heathrow
Nov 20
LHR5:40 pmLondon Heathrow
34h 25m
1 stop
GMP1:05 pmSeoul Gimpo Intl
$577
Find similar

Malaysia Airlines flights from Seoul to London Heathrow Airport

Our best Malaysia Airlines deals on Seoul to London Heathrow Airport flight tickets
Malaysia Airlines
Nov 26
ICN12:10 amIncheon Intl
24h 15m
1 stop
LHR3:25 pmLondon Heathrow
Dec 2
LHR10:25 amLondon Heathrow
35h 05m
1 stop
ICN6:30 amIncheon Intl
$652
Find similar
Malaysia Airlines
Feb 25
ICN12:10 amIncheon Intl
24h 15m
1 stop
LHR3:25 pmLondon Heathrow
Feb 26
LHR9:25 pmLondon Heathrow
24h 05m
1 stop
ICN6:30 amIncheon Intl
$677
Find similar
Malaysia Airlines
Oct 23
ICN12:10 amIncheon Intl
24h 25m
1 stop
LHR4:35 pmLondon Heathrow
Nov 1
LHR10:25 amLondon Heathrow
35h 05m
1 stop
ICN6:30 amIncheon Intl
$954
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seoul to London Heathrow Airport 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 October 20, 2025.
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

Wed 11/19

2:25 pm-5:50 pm

1 stop36h 25m

London Heathrow

Tue 11/25

8:25 pm-1:05 pm

1 stop31h 40m

$555

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Tue 12/2

2:25 pm-3:55 pm

1 stop34h 30m

London Heathrow

Tue 12/9

5:40 pm-1:05 pm

1 stop34h 25m

$576

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 11/26

12:10 am-3:25 pm

1 stop24h 15m

London Heathrow

Tue 12/2

10:25 am-6:30 am

1 stop35h 05m

$652

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Thu 11/27

12:25 pm-6:05 pm

Nonstop14h 40m

London Heathrow

Wed 12/3

8:10 pm-5:50 pm

Nonstop12h 40m

$667

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 12/2

12:25 pm-6:05 pm

Nonstop14h 40m

London Heathrow

Tue 12/9

8:10 pm-5:50 pm

Nonstop12h 40m

$676

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 2/25

12:10 am-3:25 pm

1 stop24h 15m

London Heathrow

Thu 2/26

9:25 pm-6:30 am

1 stop24h 05m

$677

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 12/3

1:30 pm-9:00 pm

1 stop16h 30m

London Heathrow

Wed 12/10

7:40 am-10:50 am

2 stops18h 10m

$702

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Sun 1/18

1:30 pm-9:00 pm

1 stop16h 30m

London Heathrow

Fri 1/23

6:35 am-10:50 am

2 stops19h 15m

$705

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 2/24

5:50 pm-2:30 pm

1 stop29h 40m

London Heathrow

Sun 3/1

8:55 pm-9:55 pm

1 stop16h 00m

$726

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 2/24

5:50 pm-2:30 pm

1 stop29h 40m

London Heathrow

Thu 3/5

8:55 pm-9:55 pm

1 stop16h 00m

$727

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 London from

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

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 Seoul and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

The month of March is, on average, the cheapest month to fly to London Heathrow Airport from Seoul, with most prices found around $728. If you’re not able to fly to London Heathrow Airport in March, then December is your next best option. Flight prices from Seoul to London Heathrow Airport during December average around $741.

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Saturday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $960. The most expensive day to fly to London Heathrow Airport is Sunday, with ticket prices averaging around $1,111.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Seoul to London Heathrow Airport in the evening for as low as $977. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $1,069.

What is the cheapest Seoul to London Heathrow flight route?

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

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Seoul when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $858 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Seoul for as low as $772 on momondo.

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

There are 2 cabin classes available to choose from on Seoul to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of October 2025, prices for Seoul to London Heathrow Airport flights are approximately 10% cheaper when compared to flights at the same time last year.

When to book flights from Seoul to London Heathrow Airport

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

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

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

Best Price Found

$705

Fastest flight time

11h 30m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Seoul in the past 72 hours is $705. The best round-trip flight deal from Seoul to London Heathrow Airport found on momondo in the last 72 hours is $680.
The fastest flight from Seoul to London Heathrow Airport takes 11h 30m
Direct flights go from Seoul to London Heathrow Airport every day.
Search flight deals

  • How far is Seoul to London Heathrow by plane?

    A flight from Seoul to London Heathrow will travel around 5512.0 mi. In terms of flight time, this usually takes a little over 14h 40m.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seoul to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The required travel and health documents for your London Heathrow Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

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

Best airlines flying from Seoul to London Heathrow Airport

Compare and see reviews for airlines that fly from Seoul to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
Air ChinaPriceFrom $580Free CancellationRating
7.2
115 reviews
Search Air China flights
Asiana AirlinesPriceFrom $629Free CancellationRating
8.2
485 reviews
Search Asiana Airlines flights
LufthansaPriceFrom $734Free CancellationRating
6.8
7,508 reviews
Search Lufthansa flights
Korean AirPriceFrom $847Free CancellationRating
8.4
1,153 reviews
Search Korean Air flights

  • Korean Air Flights From Seoul to London Heathrow Airport

    The lowest priced Korean Air flight from Seoul to London Heathrow Airport from the last 72 hours was $847. Generally, Korean Air has 7 flights on this route every week with an average price of $1,216. Korean Air is rated 8.4/10 by our users.

  • Asiana Airlines Flights From Seoul to London Heathrow Airport

    The best Asiana Airlines deal for Seoul to London Heathrow Airport flight tickets found on momondo in the last 72 hours was $629, round-trip. It should be noted that an average Asiana Airlines flight deal for this route in this time was higher, at $892 round-trip. Asiana Airlines operates 7 flights out of Seoul into London Heathrow Airport in an average week, so prices vary by time and availability. 485 Asiana Airlines reviews by users on momondo have scored the airline at 8.2/10.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Luton
Dover
Slough
Guildford
Dartford
Crawley
Hayes
Stratford-upon-Avon
Brentwood
Salisbury
Chelmsford
Colchester
Folkestone
Romford
Ilford
Swindon
Cobham

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Seoul.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seoul to London.

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

If you are not ready to book a flight from Seoul to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

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