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Cheap flights from Seoul to London 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 Seoul to London departing on 6/9. 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.
China Eastern Logo
4:20 pm - 5:30 pm
ICN
-
LHR
34h 10m
1 stop
China Eastern Logo
9:00 pm - 3:05 pm
LHR
-
ICN
33h 05m
1 stop
$666China Eastern
Sun, Oct 25 - Sat, Nov 7
Air China Logo
1:10 pm - 3:55 pm
ICN
-
LHR
35h 45m
1 stop
Air China Logo
8:25 pm - 9:55 pm
LHR
-
ICN
16h 30m
1 stop
$688Air China
Wed, Nov 4 - Sat, Nov 14
Air China Logo
1:05 pm - 5:40 pm
ICN
-
LHR
36h 35m
1 stop
Air China Logo
9:35 pm - 12:55 pm
LHR
-
ICN
30h 20m
1 stop
$697Air China
Thu, Oct 22 - Thu, Nov 5
Lufthansa Logo
11:40 am - 7:40 pm
ICN
-
LHR
16h 00m
1 stop
Lufthansa Logo
9:00 am - 9:55 am
LHR
-
ICN
16h 55m
1 stop
$703Lufthansa
Mon, Jun 15 - Wed, Jun 17
Multiple Airlines Logo
1:10 pm - 3:55 pm
ICN
-
LHR
35h 45m
1 stop
Multiple Airlines Logo
9:10 pm - 3:45 pm
LHR
-
ICN
33h 35m
1 stop
$708Multiple Airlines
Wed, Nov 4 - Sat, Nov 14
Multiple Airlines Logo
1:10 pm - 3:55 pm
ICN
-
LHR
35h 45m
1 stop
Multiple Airlines Logo
9:10 pm - 1:55 pm
LHR
-
ICN
31h 45m
1 stop
$712Multiple Airlines
Wed, Nov 4 - Sat, Nov 14
Lufthansa Logo
12:20 pm - 10:10 pm
ICN
-
LHR
17h 50m
1 stop
Lufthansa Logo
7:25 am - 9:55 am
LHR
-
ICN
18h 30m
1 stop
$713Lufthansa
Wed, Jun 10 - Wed, Jun 17
Multiple Airlines Logo
11:40 am - 9:10 am
ICN
-
LHR
29h 30m
2 stops
Multiple Airlines Logo
8:50 pm - 9:55 am
LHR
-
ICN
29h 05m
2 stops
$717Multiple Airlines
Tue, Jul 7 - Tue, Jul 14
Multiple Airlines Logo
11:40 am - 9:10 am
ICN
-
LHR
29h 30m
2 stops
Multiple Airlines Logo
8:50 pm - 9:55 am
LHR
-
ICN
29h 05m
3 stops
$718Multiple Airlines
Tue, Jun 23 - Tue, Jul 7
China Southern Logo
1:30 pm - 5:55 pm
GMP
-
LHR
37h 25m
1 stop
China Southern Logo
9:30 pm - 12:25 pm
LHR
-
GMP
29h 55m
1 stop
$759China Southern
Wed, Nov 4 - Sat, Nov 14

Lufthansa flights from Seoul to London Heathrow Airport

Our best Lufthansa deals on Seoul to London Heathrow Airport flight tickets
Lufthansa
Jun 15
ICN11:40 amIncheon Intl
16h 00m
1 stop
LHR7:40 pmLondon Heathrow
Jun 17
LHR9:00 amLondon Heathrow
16h 55m
1 stop
ICN9:55 amIncheon Intl
$703
Lufthansa
Jun 10
ICN12:20 pmIncheon Intl
17h 50m
1 stop
LHR10:10 pmLondon Heathrow
Jun 17
LHR7:25 amLondon Heathrow
18h 30m
1 stop
ICN9:55 amIncheon Intl
$713
Lufthansa
Jun 11
ICN11:40 amIncheon Intl
19h 00m
1 stop
LHR10:40 pmLondon Heathrow
Jun 17
LHR6:55 amLondon Heathrow
19h 00m
1 stop
ICN9:55 amIncheon Intl
$723

SWISS flights from Seoul to London Heathrow Airport

Our best SWISS deals on Seoul to London Heathrow Airport flight tickets
SWISS
May 25
ICN9:30 amIncheon Intl
16h 20m
1 stop
LHR5:50 pmLondon Heathrow
May 31
LHR7:15 pmLondon Heathrow
52h 15m
2 stops
ICN7:30 amIncheon Intl
$804
SWISS
May 27
ICN9:30 amIncheon Intl
20h 00m
2 stops
LHR9:30 pmLondon Heathrow
Jun 1
LHR6:40 pmLondon Heathrow
28h 50m
1 stop
ICN7:30 amIncheon Intl
$855
SWISS
May 27
ICN9:30 amIncheon Intl
16h 20m
1 stop
LHR5:50 pmLondon Heathrow
Jun 5
LHR7:00 amLondon Heathrow
16h 30m
2 stops
ICN7:30 amIncheon Intl
$859

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 May 20, 2026.
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

Cheapest round-trip

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Sun 10/25

4:20 pm-5:30 pm

1 stop34h 10m

London Heathrow

Sat 11/7

9:00 pm-3:05 pm

1 stop33h 05m

$666

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 11/4

1:10 pm-3:55 pm

1 stop35h 45m

London Heathrow

Sat 11/14

8:25 pm-9:55 pm

1 stop16h 30m

$688

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Thu 10/22

1:05 pm-5:40 pm

1 stop36h 35m

London Heathrow

Thu 11/5

9:35 pm-12:55 pm

1 stop30h 20m

$697
Quickest round-trip

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 6/15

11:40 am-7:40 pm

1 stop16h 00m

London Heathrow

Wed 6/17

9:00 am-9:55 am

1 stop16h 55m

$703

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 11/4

1:10 pm-3:55 pm

1 stop35h 45m

London Heathrow

Sat 11/14

9:10 pm-3:45 pm

1 stop33h 35m

$708

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 11/4

1:10 pm-3:55 pm

1 stop35h 45m

London Heathrow

Sat 11/14

9:10 pm-1:55 pm

1 stop31h 45m

$712

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 6/10

12:20 pm-10:10 pm

1 stop17h 50m

London Heathrow

Wed 6/17

7:25 am-9:55 am

1 stop18h 30m

$713

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 7/7

11:40 am-9:10 am

2 stops29h 30m

London Heathrow

Tue 7/14

8:50 pm-9:55 am

2 stops29h 05m

$717

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 6/23

11:40 am-9:10 am

2 stops29h 30m

London Heathrow

Tue 7/7

8:50 pm-9:55 am

3 stops29h 05m

$718

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Wed 11/4

1:30 pm-5:55 pm

1 stop37h 25m

London Heathrow

Sat 11/14

9:30 pm-12:25 pm

1 stop29h 55m

$759

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 $424. If you’re not able to fly to London Heathrow Airport in November, then February is your next best option. Flight prices from Seoul to London Heathrow Airport during February average around $433.

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 $776. The most expensive day to fly to London Heathrow Airport is Sunday, with ticket prices averaging around $1,236.

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 from Seoul 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 $903 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 $690 on momondo.

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

There are 3 cabin classes available to choose from on Seoul to London Heathrow Airport 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 Seoul to London Heathrow Airport flights?

You could potentially save up to 1% on your flight if you consider stops on a Seoul to London Heathrow Airport flight.

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

As of May 2026, prices for Seoul to London Heathrow Airport flights are approximately 30% more expensive 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

$609

Fastest flight time

14h 25m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Seoul in the past 72 hours is $609. The best round-trip flight deal from Seoul to London Heathrow Airport found on momondo in the last 72 hours is $943.
The fastest flight from Seoul to London Heathrow Airport takes 14h 25m
Direct flights go from Seoul to London Heathrow Airport every day.
Search flight deals

Frequently asked questions about flying from Seoul to London Heathrow Airport

  • 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 25m.

  • 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
Asiana AirlinesPriceFrom $566Free CancellationRating
8.1
534 reviews
Search Asiana Airlines flights
Air ChinaPriceFrom $600Free CancellationRating
7.3
151 reviews
Search Air China flights
LufthansaPriceFrom $754Free CancellationRating
6.8
8,015 reviews
Search Lufthansa flights
Korean AirPriceFrom $852Free CancellationRating
8.4
1,218 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 $852. Generally, Korean Air has 14 flights on this route every week with an average price of $1,184. 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 $566, round-trip. It should be noted that an average Asiana Airlines flight deal for this route in this time was higher, at $865 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. 534 Asiana Airlines reviews by users on momondo have scored the airline at 8.1/10.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Dover
Luton
Hayes
Crawley
Wembley
Stratford-upon-Avon
Slough
Croydon
Stansted
Watford
Harrow
Brentwood
Dartford
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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