£203 Find Cheap Flights from South Korea to London Heathrow Airport – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Heathrow departing on 21/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Cheap Flights from South Korea to Heathrow

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from South Korea to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from South Korea to Heathrow

Mon, 19 Oct - Sun, 25 Oct
China Southern Logo
13:30 - 18:05
GMP
-
LHR
36h 35m
1 stop
China Southern Logo
21:30 - 12:25
LHR
-
GMP
29h 55m
1 stop
£503China Southern
Thu, 3 Dec - Wed, 9 Dec
China Eastern Logo
20:50 - 17:30
GMP
-
LHR
29h 40m
1 stop
China Eastern Logo
21:00 - 11:00
LHR
-
GMP
29h 00m
1 stop
£511China Eastern
Sun, 18 Oct - Tue, 27 Oct
Air China Logo
14:25 - 17:40
GMP
-
LHR
35h 15m
1 stop
Air China Logo
17:40 - 13:05
LHR
-
GMP
34h 25m
1 stop
£512Air China
Fri, 23 Oct - Fri, 30 Oct
China Southern Logo
13:30 - 18:05
GMP
-
LHR
36h 35m
1 stop
China Southern Logo
21:30 - 12:25
LHR
-
GMP
29h 55m
1 stop
£516China Southern
Mon, 9 Nov - Mon, 16 Nov
Air China Logo
14:25 - 17:50
GMP
-
LHR
36h 25m
1 stop
Air China Logo
17:40 - 13:05
LHR
-
GMP
34h 25m
1 stop
£520Air China
Tue, 1 Dec - Thu, 10 Dec
Air France Logo
07:55 - 21:25
PUS
-
LHR
22h 30m
2 stops
Air France Logo
11:30 - 15:10
LHR
-
PUS
18h 40m
2 stops
£529Air France
Sat, 5 Sep - Sat, 12 Sep
Shenzhen Airlines Logo
15:00 - 20:00
CJU
-
LHR
37h 00m
1 stop
Shenzhen Airlines Logo
22:05 - 13:55
LHR
-
CJU
31h 50m
1 stop
£554Shenzhen Airlines
Thu, 10 Sep - Fri, 18 Sep
Shenzhen Airlines Logo
15:00 - 20:00
CJU
-
LHR
37h 00m
1 stop
Shenzhen Airlines Logo
22:05 - 12:55
LHR
-
CJU
30h 50m
1 stop
£558Shenzhen Airlines
Wed, 20 Jan - Wed, 27 Jan
Lufthansa Logo
12:55 - 20:50
ICN
-
LHR
16h 55m
1 stop
Lufthansa Logo
07:40 - 11:00
LHR
-
ICN
18h 20m
2 stops
£558Lufthansa
Wed, 9 Dec - Mon, 14 Dec
Lufthansa Logo
13:30 - 21:00
ICN
-
LHR
16h 30m
1 stop
Lufthansa Logo
07:40 - 11:00
LHR
-
ICN
18h 20m
2 stops
£561Lufthansa
Booking Insights

KAYAK's insights & trends for flights to Heathrow

Get data-powered insights and trends into flights to Heathrow to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to London Heathrow Airport?

These are the best return prices found by users searching on KAYAK in the last 5 days.

In the last 5 days, the cheapest flight deal to London Heathrow Airport was found on the route from Busan, at £503 return. The most popular connection is from Incheon to London Heathrow Airport, while KAYAK users have found return deals for as low as £558 in the last 5 days.

What is the cheapest day to fly to London?

The average price of all round-trip flights to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to London is Thursday where round-trip tickets can be as cheap as £569. On the other hand, the most expensive day to fly is Tuesday, where round-trip prices are £708 on average.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to London Heathrow Airport is November, where tickets cost £510 on average for return flights. On the other hand, the most expensive months are October and September, where the average cost of tickets from South Korea is £927 and £763 respectively. For one-way flights, the best month to travel is November with an average price of £242.

What is the cheapest time of day to fly to London Heathrow Airport?

The average price for all round-trip flights to London Heathrow Airport depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to London Heathrow Airport is generally in the morning, when round-trip flights cost £663 on average. The most expensive time of day to fly to London Heathrow Airport is generally in the afternoon, which is peak travel time and where the average cost of a ticket is £699.

What is a good deal for flights to London Heathrow Airport?

If you’re looking for cheap airfare to London Heathrow Airport, 25% of our users found tickets to London Heathrow Airport for the following prices or less: From Incheon Intl Airport £713 return.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 4 weeks before departure, which saves you about 7% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know - Cheap tickets from South Korea to London Heathrow Airport

Low season

February

Cheapest flight

£203
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly (9% more expensive on average)
Flight from Busan to London Heathrow Airport

FAQs - booking London Heathrow Airport flights

  • What is the cheapest flight to London Heathrow Airport?

    In the last 5 days, the cheapest flight deal to London Heathrow Airport was found on the route from Busan, at £503 return. The most popular connection is from Incheon to London Heathrow Airport, while KAYAK users have found return deals for as low as £558 in the last 5 days.

  • How far is London Heathrow Airport from central London?

    The city centre of London is 14 miles from London.

  • How much is a flight to London?

    On average, a flight to London costs £587. The cheapest price found on KAYAK in the last 2 weeks cost £242 and departed from Incheon Intl Airport.

  • How does KAYAK find such low prices on flights to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to London Heathrow Airport

  • Looking for a cheap flight from London Heathrow Airport to South Korea? 25% of our users found flights on this route for £416 or less one-way and £713 or less round-trip.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London Heathrow Airport flight deals.

Reviews of the top 4 airlines flying from South Korea to Heathrow

 
See real verified KAYAK customer reviews for airlines flying to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from South Korea to London. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Heathrow? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Korean AirOverall score based on 1221 reviews
8.7Crew
8.5Boarding
8.1Food
8.3Comfort
8.2Entertainment
Airline reviews

Very long flight time. Still better than a connection flight. Staff is very good at service. Vegetarian food is not very good.

8.0 ExcellentGary, Apr 2026
ICN - YYZ
Read more Korean Air reviews

Very long flight time. Still better than a connection flight. Staff is very good at service. Vegetarian food is not very good.

The business class is excellent. I loved the food, and the crew was very attentive and professional. From boarding to arrival, everything felt smooth and well-organised.

Lousy entertainment system. Crews are excellent. Meal is just mediocre.

Aircraft is pretty old. Seat is not comfortable. Meal quality is disappointing. Entertainment system is not impressive at all.

Great service and comfort level. You can have more of vegetarian food options.

It’s great, long flight and arrive safe at destination

Everything was excellent as I expected. They also had a very caring crew. I had a headache and asked a Tylenol. The crew members kept checking with me how I was doing.

I can't believe they put my wife and I in the two middle seats! It is a very long flight and we had single flyers on either side of us blocking the way to the bathroom! There's no reason to not give one of us the isle seat so we could have managed bathroom needs and snacks with convenience. So I think very poorly of Korean air to put us both in the middle, I've never had that happen before and will probably avoid this airline in the future because of this. We tried to have them change it but they didn't so you pretty much lost a customer because of it.

There could have been better spacing of the passengers, it was crowded in some parts of the plane then other while rows were empty

Plane took off on time and I had the whole row to myself!

Smooth sailing trip, pilots are good. Less amount of food offered but the quality is okey.

Kayak uses scammer sites to steal money from their victims.

When one asks for water because they are dehydrated, bring more then a sip or two in a small cup. Bring them a whole bottle.

Food could be better it was okay. Entertainment seems dated it was something but in this day and age could be a lot better.

I am thankful that I was able to fly using Asiana

The customer service was excellent. They noticed that our connecting flight was scheduled too closely for us to complete customs, so they changed the flight. Our initial flight was delayed, and they were able to get us on another flight, all without charging us any additional fees. I would fly them again anytime!

Very clean ,flight attendants very professional,nice , Boarding was very easy

The aircraft was massive (A-380) and became crowded with 400+ passengers on board.

Coming back to America was a peaceful flight everyone and everything was perfect

The crew was amazing and really nice. The OS on the entertainment system could use an update, though. It felt old and outdated but had anything you'd need to keep busy. I usually never use it anyways, but that did stand out.

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

Great crew - old style upper class seats on the older fleet now feels dated

Following a paid seat upgrade for enhanced comfort, I encountered an unacceptable odor in my assigned area. It took three hours for the crew to relocate me, and the replacement seat was unacceptably close to the lavatory, offering no improvement.

Good overall. Cannot fault the airlines. I have had better entertainment systems before ie ice in Emirates but it was not too bad. Food was decent and staff were friendly.

Miami airport needs more thorough signage. It was a long walk from my transport point to the check in desk,

Flight took off an hour late. Had to stay on the tarmac for half an hour after landing. Both annoying.

We’ve used VA before many times the experience is always been good they have lovely staff and the food is always delicious.

Weren’t even given earphones to use the entertainment system

Very friendly and attentive flight attendants, good food service. Seat was comfortable. However, the in flight electronics were poor. The screen froze repeatedly; the controller died; the headphones are a hit or miss; the wifi wasn't usable. Very scarce communication before the flight (no email reminder). Almost impossible to understand in-flight communications (audio was very poor).

The meals were not the greatest and lacking of appetite but everything else was spot on

Your staff was exceptional. Could teach the other airlines-rules on etiquette, and service. Excellent landings on flights, carried out by your pilots. Only complaint is long delay on return flight in Beijing, onto Vancouver.

cannot get seat information for LAX to IAH when check in in XI,AN

Food and service are good. Bathroom was lack of lotions and cleaning. That should be improved.

Chinese flight attendants didn't speak english well. They didn't care enough to remember that I (east asian who isn't Chinese) wasn't Chinese and spoke English. Announcement in english on board was poor and I find it very difficult to understand what was announced. Also, a cabin bag allows only 5kg!

Everything was not satisfactory - the flight was delayed, staffs were ok but they didn't speak English well. I am from east Asia (not Chinese) and they didn't care enough to remember that I wasn't Chinese but persistently spoke chinese to me. The flight announcement in english wasn't clear to understand.

I wish I had been able to choose a vegetarian meal. Crew friendly and helpful. Seat was ok. All quite efficient and pleasant. Would recommend for inner China travel for sure.

It was simply bad and on top of that my luggage hasn't been delivered until now. They can't even localize it which is just unacceptable when they are supposed to scan the bar code they put when we check in

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Everything you need to know for your flight to Heathrow

Information on the airport you'll fly into in London