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Cheap flights from Seoul to London from $315

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 8/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seoul to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
China Southern Logo
1:30 pm - 6:05 pmGMP  Seoul Gimpo Intl-LHR London Heathrow
36h 35m1 stop Beijing Daxing Intl
China Southern Logo
9:00 pm - 12:25 pmLHR  London Heathrow-GMP Seoul Gimpo Intl
31h 25m1 stop Beijing Daxing Intl
$689China Southern
Fri, Aug 28 - Sat, Sep 5
Air China Logo
2:25 pm - 5:50 pmGMP  Seoul Gimpo Intl-LHR London Heathrow
36h 25m1 stop Beijing Capital
Air China Logo
5:40 pm - 1:05 pmLHR  London Heathrow-GMP Seoul Gimpo Intl
34h 25m1 stop Beijing Capital
$708Air China
Mon, Nov 9 - Mon, Nov 16
Air China Logo
2:25 pm - 3:55 pmGMP  Seoul Gimpo Intl-LHR London Heathrow
34h 30m1 stop Beijing Capital
Air China Logo
8:25 pm - 1:05 pmLHR  London Heathrow-GMP Seoul Gimpo Intl
31h 40m1 stop Beijing Capital
$709Air China
Mon, Nov 9 - Mon, Nov 16
Air China Logo
2:25 pm - 5:50 pmGMP  Seoul Gimpo Intl-LHR London Heathrow
36h 25m1 stop Beijing Capital
Air China Logo
5:40 pm - 1:05 pmLHR  London Heathrow-GMP Seoul Gimpo Intl
34h 25m1 stop Beijing Capital
$709Air China
Mon, Nov 9 - Mon, Nov 16
China Eastern Logo
8:50 pm - 6:40 pmGMP  Seoul Gimpo Intl-LHR London Heathrow
29h 50m1 stop Shanghai Hongqiao Intl
China Eastern Logo
9:20 pm - 11:00 amLHR  London Heathrow-GMP Seoul Gimpo Intl
29h 40m1 stop Shanghai Pu Dong
$712China Eastern
Mon, Aug 17 - Tue, Aug 25
China Eastern Logo
8:50 pm - 6:40 pmGMP  Seoul Gimpo Intl-LHR London Heathrow
29h 50m1 stop Shanghai Hongqiao Intl
China Eastern Logo
9:20 pm - 11:00 amLHR  London Heathrow-GMP Seoul Gimpo Intl
29h 40m1 stop Shanghai Pu Dong
$712China Eastern
Sun, Aug 16 - Tue, Aug 25
Lufthansa Logo
12:55 pm - 10:20 pmICN  Incheon Intl-LHR London Heathrow
18h 25m1 stop Frankfurt am Main
Lufthansa Logo
6:30 am - 11:00 amLHR  London Heathrow-ICN Incheon Intl
19h 30m1 stop Frankfurt am Main
$764Lufthansa
Mon, Dec 28 - Thu, Dec 31
Lufthansa Logo
12:55 pm - 8:05 amICN  Incheon Intl-LHR London Heathrow
28h 10m2 stops Frankfurt am Main Munich Franz Josef Strauss
Lufthansa Logo
9:30 am - 11:00 amLHR  London Heathrow-ICN Incheon Intl
16h 30m1 stop Frankfurt am Main
$764Lufthansa
Mon, Jan 25 - Fri, Feb 26
Asiana Airlines Logo
8:40 am - 2:20 pmICN  Incheon Intl-LHR London Heathrow
14h 40mnonstop
Asiana Airlines Logo
4:35 pm - 2:10 pmLHR  London Heathrow-ICN Incheon Intl
12h 35mnonstop
$978Asiana Airlines
Mon, Dec 28 - Sun, Jan 10
Asiana Airlines Logo
8:40 am - 2:20 pmICN  Incheon Intl-LHR London Heathrow
14h 40mnonstop
Asiana Airlines Logo
4:35 pm - 2:10 pmLHR  London Heathrow-ICN Incheon Intl
12h 35mnonstop
$978Asiana Airlines
Tue, Dec 29 - Thu, Jan 14

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China Eastern flights from Seoul to London Heathrow Airport

Our best China Eastern deals on Seoul to London Heathrow Airport flight tickets
China Eastern
Aug 16
GMP8:50 pmSeoul Gimpo Intl
29h 50m
1 stop
LHR6:40 pmLondon Heathrow
Aug 25
LHR9:20 pmLondon Heathrow
29h 40m
1 stop
GMP11:00 amSeoul Gimpo Intl
$712
China Eastern
Aug 15
GMP8:50 pmSeoul Gimpo Intl
29h 50m
1 stop
LHR6:40 pmLondon Heathrow
Aug 25
LHR9:20 pmLondon Heathrow
29h 40m
1 stop
GMP11:00 amSeoul Gimpo Intl
$734
China Eastern
Aug 14
GMP8:50 pmSeoul Gimpo Intl
29h 50m
1 stop
LHR6:40 pmLondon Heathrow
Aug 25
LHR9:20 pmLondon Heathrow
29h 40m
1 stop
GMP11:00 amSeoul Gimpo Intl
$742

Scandinavian Airlines flights from Seoul to London Heathrow Airport

Our best Scandinavian Airlines deals on Seoul to London Heathrow Airport flight tickets
Scandinavian Airlines
Dec 31
ICN11:45 pmIncheon Intl
18h 35m
1 stop
LHR9:20 amLondon Heathrow
Jan 11
LHR7:30 pmLondon Heathrow
14h 30m
1 stop
ICN7:00 pmIncheon Intl
$752
Scandinavian Airlines
Nov 5
ICN11:45 pmIncheon Intl
23h 50m
2 stops
LHR2:35 pmLondon Heathrow
Nov 9
LHR7:30 pmLondon Heathrow
14h 30m
1 stop
ICN7:00 pmIncheon Intl
$753
Scandinavian Airlines
Nov 4
ICN11:45 pmIncheon Intl
18h 35m
1 stop
LHR9:20 amLondon Heathrow
Nov 18
LHR7:05 amLondon Heathrow
26h 55m
2 stops
ICN7:00 pmIncheon Intl
$754

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 August 5, 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

SeoulLondon

GMP Seoul Gimpo Intl - LHR London Heathrow

GMPLHR

Seoul Gimpo Intl

Fri 8/28

1:30 pm-6:05 pm

1 stop36h 35m

London Heathrow

Sat 9/5

9:00 pm-12:25 pm

1 stop31h 25m

$689

SeoulLondon

GMP Seoul Gimpo Intl - LHR London Heathrow

GMPLHR

Seoul Gimpo Intl

Mon 11/9

2:25 pm-5:50 pm

1 stop36h 25m

London Heathrow

Mon 11/16

5:40 pm-1:05 pm

1 stop34h 25m

$708

SeoulLondon

GMP Seoul Gimpo Intl - LHR London Heathrow

GMPLHR

Seoul Gimpo Intl

Mon 11/9

2:25 pm-3:55 pm

1 stop34h 30m

London Heathrow

Mon 11/16

8:25 pm-1:05 pm

1 stop31h 40m

$709

SeoulLondon

GMP Seoul Gimpo Intl - LHR London Heathrow

GMPLHR

Seoul Gimpo Intl

Mon 11/9

2:25 pm-5:50 pm

1 stop36h 25m

London Heathrow

Mon 11/16

5:40 pm-1:05 pm

1 stop34h 25m

$709

SeoulLondon

GMP Seoul Gimpo Intl - LHR London Heathrow

GMPLHR

Seoul Gimpo Intl

Mon 8/17

8:50 pm-6:40 pm

1 stop29h 50m

London Heathrow

Tue 8/25

9:20 pm-11:00 am

1 stop29h 40m

$712

SeoulLondon

GMP Seoul Gimpo Intl - LHR London Heathrow

GMPLHR

Seoul Gimpo Intl

Sun 8/16

8:50 pm-6:40 pm

1 stop29h 50m

London Heathrow

Tue 8/25

9:20 pm-11:00 am

1 stop29h 40m

$712

IncheonLondon

ICN Incheon Intl - LHR London Heathrow

ICNLHR

Incheon Intl

Mon 12/28

12:55 pm-10:20 pm

1 stop18h 25m

London Heathrow

Thu 12/31

6:30 am-11:00 am

1 stop19h 30m

$764

IncheonLondon

ICN Incheon Intl - LHR London Heathrow

ICNLHR

Incheon Intl

Mon 1/25

12:55 pm-8:05 am

2 stops28h 10m

London Heathrow

Fri 2/26

9:30 am-11:00 am

1 stop16h 30m

$764
Quickest round-trip

IncheonLondon

ICN Incheon Intl - LHR London Heathrow

ICNLHR

Incheon Intl

Mon 12/28

8:40 am-2:20 pm

Nonstop14h 40m

London Heathrow

Sun 1/10

4:35 pm-2:10 pm

Nonstop12h 35m

$978

IncheonLondon

ICN Incheon Intl - LHR London Heathrow

ICNLHR

Incheon Intl

Tue 12/29

8:40 am-2:20 pm

Nonstop14h 40m

London Heathrow

Thu 1/14

4:35 pm-2:10 pm

Nonstop12h 35m

$978

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?

Prices are currently low for flights on this route.

Typical prices usually range from $841 to $1,277.
The lowest price recently found on this route was $689.

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 $697. If you’re not able to fly to London Heathrow Airport in November, then March is your next best option. Flight prices from Seoul to London Heathrow Airport during March average around $763.

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

Our data shows that Friday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $845. The most expensive day to fly to London Heathrow Airport is Sunday, with ticket prices averaging around $1,293.

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 $880 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 $686 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?

No. A direct flight is the cheapest option for a flight between Seoul to London Heathrow Airport.

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

As of August 2026, prices for Seoul to London Heathrow Airport flights are approximately 9% 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

$715

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 $715. The best round-trip flight deal from Seoul to London Heathrow Airport found on momondo in the last 72 hours is $897.
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
553 reviews
Search Asiana Airlines flights
Air ChinaPriceFrom $600Free CancellationRating
7.4
160 reviews
Search Air China flights
LufthansaPriceFrom $715Free CancellationRating
6.8
8,176 reviews
Search Lufthansa flights

  • Asiana Airlines Flights From Seoul to London Heathrow Airport

    The lowest priced Asiana Airlines flight from Seoul to London Heathrow Airport from the last 72 hours was $566. Generally, Asiana Airlines has 6 flights on this route every week with an average price of $834. Asiana Airlines is rated 8.1/10 by our users.

Traveling to a place near London?

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Slough
Harrow
Watford
Cobham
Richmond
Uxbridge
Worthing
Romford
Ilford

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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