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Cheap flights from Seoul to London from $160

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 1/30. 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:10 am - 5:50 pm
ICN
-
LHR
15h 40m1 stop
Multiple Airlines Logo
9:00 pm - 11:00 am
LHR
-
ICN
29h 00m2 stops
$547Multiple Airlines
Mon, Jan 26 - Sat, Jan 31
Air China Logo
2:55 pm - 8:15 pm
ICN
-
LHR
38h 20m1 stop
Air China Logo
5:40 pm - 4:35 pm
LHR
-
ICN
13h 55m1 stop
$548Air China
Mon, Jan 19 - Thu, Jan 29
Multiple Airlines Logo
8:55 am - 5:30 pm
ICN
-
LHR
17h 35m1 stop
Multiple Airlines Logo
9:00 pm - 8:35 pm
LHR
-
ICN
38h 35m2 stops
$550Multiple Airlines
Mon, Dec 22 - Mon, Dec 29
Multiple Airlines Logo
4:20 pm - 5:30 pm
ICN
-
LHR
34h 10m1 stop
Multiple Airlines Logo
9:30 pm - 10:15 pm
LHR
-
ICN
15h 45m1 stop
$552Multiple Airlines
Mon, Dec 22 - Thu, Jan 29
China Eastern Logo
4:20 pm - 5:30 pm
ICN
-
LHR
34h 10m1 stop
China Eastern Logo
9:00 pm - 3:20 pm
LHR
-
ICN
33h 20m1 stop
$573China Eastern
Mon, Dec 22 - Mon, Dec 29
Air China Logo
10:50 am - 8:30 pm
ICN
-
LHR
17h 40m1 stop
Air China Logo
8:25 pm - 11:35 am
LHR
-
ICN
31h 10m1 stop
$578Air China
Tue, Jun 2 - Mon, Jun 15
China Southern Logo
9:25 am - 5:55 pm
ICN
-
LHR
17h 30m1 stop
China Southern Logo
9:30 pm - 10:15 pm
LHR
-
ICN
15h 45m1 stop
$582China Southern
Fri, Dec 19 - Sun, Feb 1
China Southern Logo
1:25 pm - 6:05 pm
GMP
-
LHR
36h 40m1 stop
China Southern Logo
9:00 pm - 12:25 pm
LHR
-
GMP
31h 25m1 stop
$653China Southern
Tue, Jun 2 - Mon, Jun 15
EVA Air Logo
8:15 pm - 7:05 pm
GMP
-
LHR
31h 50m2 stops
EVA Air Logo
9:20 pm - 7:15 pm
LHR
-
GMP
36h 55m2 stops
$912EVA Air
Wed, Mar 11 - Mon, Mar 16
EVA Air Logo
8:15 pm - 7:05 pm
GMP
-
LHR
31h 50m2 stops
EVA Air Logo
9:20 pm - 6:00 pm
LHR
-
GMP
35h 40m2 stops
$932EVA Air
Wed, Mar 11 - Sun, Mar 15

Air China flights from Seoul to London Heathrow Airport

Our best Air China deals on Seoul to London Heathrow Airport flight tickets
Air China
Jan 19
ICN2:55 pmIncheon Intl
38h 20m
1 stop
LHR8:15 pmLondon Heathrow
Jan 29
LHR5:40 pmLondon Heathrow
13h 55m
1 stop
ICN4:35 pmIncheon Intl
$548
Find similar
Air China
Dec 15
ICN2:50 pmIncheon Intl
34h 05m
1 stop
LHR3:55 pmLondon Heathrow
Dec 23
LHR10:10 pmLondon Heathrow
29h 45m
1 stop
ICN12:55 pmIncheon Intl
$564
Find similar
Air China
Jun 2
ICN10:50 amIncheon Intl
17h 40m
1 stop
LHR8:30 pmLondon Heathrow
Jun 15
LHR8:25 pmLondon Heathrow
31h 10m
1 stop
ICN11:35 amIncheon Intl
$578
Find similar

Etihad Airways flights from Seoul to London Heathrow Airport

Our best Etihad Airways deals on Seoul to London Heathrow Airport flight tickets
Etihad Airways
Dec 17
ICN5:50 pmIncheon Intl
33h 20m
1 stop
LHR6:10 pmLondon Heathrow
Jan 7
LHR8:50 amLondon Heathrow
16h 55m
1 stop
ICN10:45 amIncheon Intl
$620
Find similar
Etihad Airways
Dec 17
ICN5:50 pmIncheon Intl
33h 20m
1 stop
LHR6:10 pmLondon Heathrow
Jan 7
LHR8:50 amLondon Heathrow
16h 55m
1 stop
ICN10:45 amIncheon Intl
$621
Find similar
Etihad Airways
Feb 25
ICN11:45 pmIncheon Intl
23h 45m
1 stop
LHR2:30 pmLondon Heathrow
Mar 5
LHR8:55 pmLondon Heathrow
16h 00m
1 stop
ICN9:55 pmIncheon Intl
$622
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 December 9, 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

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 1/26

11:10 am-5:50 pm

1 stop15h 40m

London Heathrow

Sat 1/31

9:00 pm-11:00 am

2 stops29h 00m

$547

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 1/19

2:55 pm-8:15 pm

1 stop38h 20m

London Heathrow

Thu 1/29

5:40 pm-4:35 pm

1 stop13h 55m

$548

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 12/22

8:55 am-5:30 pm

1 stop17h 35m

London Heathrow

Mon 12/29

9:00 pm-8:35 pm

2 stops38h 35m

$550

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 12/22

4:20 pm-5:30 pm

1 stop34h 10m

London Heathrow

Thu 1/29

9:30 pm-10:15 pm

1 stop15h 45m

$552

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 12/22

4:20 pm-5:30 pm

1 stop34h 10m

London Heathrow

Mon 12/29

9:00 pm-3:20 pm

1 stop33h 20m

$573

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 6/2

10:50 am-8:30 pm

1 stop17h 40m

London Heathrow

Mon 6/15

8:25 pm-11:35 am

1 stop31h 10m

$578

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Fri 12/19

9:25 am-5:55 pm

1 stop17h 30m

London Heathrow

Sun 2/1

9:30 pm-10:15 pm

1 stop15h 45m

$582

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Tue 6/2

1:25 pm-6:05 pm

1 stop36h 40m

London Heathrow

Mon 6/15

9:00 pm-12:25 pm

1 stop31h 25m

$653

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Wed 3/11

8:15 pm-7:05 pm

2 stops31h 50m

London Heathrow

Mon 3/16

9:20 pm-7:15 pm

2 stops36h 55m

$912

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Wed 3/11

8:15 pm-7:05 pm

2 stops31h 50m

London Heathrow

Sun 3/15

9:20 pm-6:00 pm

2 stops35h 40m

$932

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 November is, on average, the cheapest month to fly to London Heathrow Airport from Seoul, with most prices found around $706. If you’re not able to fly to London Heathrow Airport in November, then January is your next best option. Flight prices from Seoul to London Heathrow Airport during January average around $735.

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

Our data shows that Monday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $976. 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 $1,017.

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 $865 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 $748 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 December 2025, prices for Seoul to London Heathrow Airport flights are approximately 37% 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

$346

Fastest flight time

14h 30m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Seoul in the past 72 hours is $346. The best round-trip flight deal from Seoul to London Heathrow Airport found on momondo in the last 72 hours is $672.
The fastest flight from Seoul to London Heathrow Airport takes 14h 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 $552Free CancellationRating
7.2
127 reviews
Search Air China flights
Asiana AirlinesPriceFrom $629Free CancellationRating
8.2
490 reviews
Search Asiana Airlines flights
LufthansaPriceFrom $754Free CancellationRating
6.8
7,618 reviews
Search Lufthansa flights
Korean AirPriceFrom $847Free CancellationRating
8.4
1,183 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 $1,103. 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 $853 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. 490 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
Dover
Luton
Slough
Guildford
Hayes
Dartford
Stratford-upon-Avon
Crawley
Brentwood
Salisbury
Wembley
Romford
Watford
Ilford
Cobham
Folkestone
Uxbridge

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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