£135 Find Cheap Flights from South Korea to London Heathrow Airport

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 22/1. 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.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
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Flight Deals

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

Sun, 23 Nov - Sun, 30 Nov
China Eastern Logo
13:50 - 17:30CJU-LHR
36h 40m1 stop
China Eastern Logo
21:00 - 17:55LHR-CJU
35h 55m1 stop
£399China Eastern
Find Deal
Thu, 4 Dec - Mon, 8 Dec
China Eastern Logo
13:50 - 17:30CJU-LHR
36h 40m1 stop
China Eastern Logo
21:00 - 12:50LHR-CJU
30h 50m1 stop
£400China Eastern
Find Deal
Wed, 19 Nov - Sun, 30 Nov
China Eastern Logo
17:50 - 17:30PUS-LHR
32h 40m1 stop
China Eastern Logo
21:00 - 16:50LHR-PUS
34h 50m1 stop
£400China Eastern
Find Deal
Tue, 11 Nov - Sun, 16 Nov
Multiple Airlines Logo
14:25 - 15:55GMP-LHR
34h 30m1 stop
Multiple Airlines Logo
21:00 - 11:00LHR-GMP
29h 00m1 stop
£408Multiple Airlines
Find Deal
Tue, 11 Nov - Tue, 18 Nov
Air China Logo
14:25 - 15:55GMP-LHR
34h 30m1 stop
Air China Logo
20:25 - 13:05LHR-GMP
31h 40m1 stop
£410Air China
Find Deal
Wed, 12 Nov - Mon, 17 Nov
Air China Logo
14:25 - 15:55GMP-LHR
34h 30m1 stop
Air China Logo
20:25 - 13:05LHR-GMP
31h 40m1 stop
£415Air China
Find Deal
Tue, 25 Nov - Fri, 28 Nov
Multiple Airlines Logo
14:25 - 17:50GMP-LHR
36h 25m1 stop
Multiple Airlines Logo
21:30 - 12:25LHR-GMP
29h 55m1 stop
£417Multiple Airlines
Find Deal
Mon, 2 Feb - Wed, 4 Feb
Korean Air Logo
07:40 - 16:30TAE-LHR
17h 50m1 stop
Korean Air Logo
18:50 - 19:45LHR-TAE
15h 55m1 stop
£693Korean Air
Find Deal
Mon, 2 Feb - Wed, 4 Feb
Korean Air Logo
17:15 - 16:30TAE-LHR
32h 15m2 stops
Korean Air Logo
18:50 - 19:45LHR-TAE
15h 55m1 stop
£737Korean Air
Find Deal
Sat, 21 Feb - Tue, 3 Mar
Asiana Airlines Logo
09:00 - 18:05CJU-LHR
18h 05m1 stop
Asiana Airlines Logo
20:10 - 22:15LHR-CJU
17h 05m1 stop
£2,563Asiana Airlines
Find Deal

Everything you should know

Top airlines
Korean Air
Most flights • 7 per week
Korean Air
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
PUS-LHR
Cheapest
ICN-LHR
Most popular
Insights
Insights
Insights
Insights
When to travel
March
Cheapest • 21% price drop
January
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
£399
China Eastern
Sun 23/11Sun 30/11
CJU - LHR • 1 stop
Cheapest direct flights
£520
Typical prices: £646-£740
Asiana Airlines
Wed 12/11Mon 17/11
ICN - LHR • Direct
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Heathrow!
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 round-trip prices found by users searching on KAYAK in the last 72 hours.

The flight route Incheon to London Heathrow Airport was the most popular route on KAYAK over the last 3 days. A return flight could be found for £435. Also in the last 3 days, Busan was the most budget-friendly place to find a flight to London Heathrow Airport with one-way tickets at £135 and £399 return.

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 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 June, where tickets cost £439 on average for one-way flights. On the other hand, the most expensive months are October and July, where the average cost of tickets from South Korea is £1,391 and £915 respectively. For return trips, the best month to travel is March with an average price of £550.

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 £287 one-way - £510 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 0 weeks before departure. For the absolute cheapest price, our data suggests you should book 69 days before departure.

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

Low seasonMarch
Cheapest flight£135
Best time to beat the crowds (12% less expensive on average)
Most popular time to fly and prices are also 8% lower on average.
Flight from Busan to London Heathrow Airport

FAQs - booking London Heathrow Airport flights

  • What is the cheapest flight to London Heathrow Airport?

    The flight route Incheon to London Heathrow Airport was the most popular route on KAYAK over the last 3 days. A return flight could be found for £435. Also in the last 3 days, Busan was the most budget-friendly place to find a flight to London Heathrow Airport with one-way tickets at £135 and £399 return.

  • 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 £510. The cheapest price found on KAYAK in the last 2 weeks cost £285 and departed from Incheon Intl Airport.

  • What is the cheapest day to fly to London?

    Based on KAYAK data, the cheapest day to fly to London is Monday where tickets can be as cheap as £623. On the other hand, the most expensive day to fly is Sunday, where prices are £793 on average.

  • 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.

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

    The cheapest time of day to fly to London Heathrow Airport is generally at night, when flights cost £513 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 £865.

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 £287 or less one-way and £510 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 3 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 1155 reviews
8.3Comfort
8.5Boarding
8.2Entertainment
8.1Food
8.7Crew
Airline reviews

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

10.0 ExcellentAye, Oct 2025ICN - MSP
Read more Korean Air reviews

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

I normally love Korean Air, but this trip was not great. We boarded the plan and were settling into our seats. My son and I use these leg swings and we used it on the trip over to Cambodia, but on the way back the flight attendant very rudely told us we could not use it and that it was against regulations. I asked to see the regulation, but never saw it. The food on this trip was horrible as well, Even my son's kids meal was disgusting so we didn't eat anything on the flight. Thankfully we brought snacks. Entertainment - what happened to the games?

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

One of the flight attendants stepped on my foot. I was on the aisle seat. A lady inside needed to get out. So Instood. Just then, a flight attentendant came wuicklybtheoughbthe aisle and stepprd on my sock covered toes. I let out a small sound. She stopped momentarily, but didn’t ask how I was just took off of the aisle. Never came back to see how I was. Fortunately, I was not really hurt other than a slight soreness in my toes. But I found that to be very negligent.

This flight was a superior flight in all regards. Extremely pleasant experience.

Korean Air is unlike any other major airline I have flown with. The grace and respect that the staff has from check in to de-boarding is unmatched. The flight attendants this time were especially wonderful to my five little children. They helped us rearrange to more suitable seating, brought our children’s meals, and patiently waited for them in the aisles when they had to use the bathroom. We felt so welcome and comfortable. I really appreciate the meal voucher when our flight was delayed. I am grateful to have had such an stress-free experience.

It's good overall. Flight was packed. Inflight entertainment choices were lacking.

Better screens, it would have been nice to have more comfortable seats.

It was great, but my bag was not loaded onto the connecting flight. I'm currently getting it resolved. If this isn't a problem, everything else was excellent.

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.

My luggage didn’t arrive with my flight. Flight was delayed by nearly 2 hours while we sat on the plane and I almost missed my connecting flight and subsequently missed the last train from the airport so it took me another 2 hours to get to my destination after arriving, Crew skipped me several times when offering beverages, and I couldn’t get their attention at times because they wouldn’t even make eye contact with me. They didn’t give me a form for disembarking so I had to go to the back of the line after waiting an eternity for immigration. Paid for on flight wi- fi that didn’t work for most of the flight.

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

The beefsteak on the lunch menu was excellent! I usually do not eat airplane food. I loved it.

Flight was too cold. I wore a regular cotton tee and it wasn’t enough. It was a night time flight so I would have thought a blanket would be provided to passengers. A 4 hour flight and no options for a meal? I flew Asiana the next day from Seoul to Manilla. Same duration, 4 hours. They give everyone a pillow and blanket and serve a meal. Why is United so cheap and holding back meals and amenities? Also, they promote too much gay stuff and DEI in their advertisements. Please be mindful of other beliefs and don’t shove your gay ideology down my throat.

Staff always with a smile and very helpful with my mom who has mobility issues.

It was all perfect and very pleasant for such long flights

Small plane with only two lavatories at the back. You must have a good plan to use it before or after the meal, if you make a bad decision, you will end up with standing in front of the toilet for a while till the food carts empty. The good thing is even there’s a slightly delayed, the plane is still arriving on time which is superb!!

The only personel that smiled at all were the flights attendants. Desk agents, lounge people none of them had a smile or even a hello. They were like dealing with dead fish. Again flight attendants were good. All other personnel looked like they didn’t want to be there or help.

good flight. food is only so so. I actually did not eat the snack. it does not look too good on the passenger next to me.

Food no variations only beef of chicken no veggie meals

Super surprised with the entire experience. Business class is incredible. Flight attendants around the world could learn customer service from these people. Simply fabulous experience all the way around.

Pillow and blanket are dirty. My son got multiple bites during the flight

Flight was on time. My group paid for seat’s so that us four can be seated next to each other. We all got separated. We all got middle seats, which made it more difficult to be able to get up and stretch or use the restroom. We tried talking to the employees at China Eastern and they were of no help. We will not be taking this flight or recommend this route to others in the future. Also I will be contacting customer service on how I can get our money back for paying for assigned seats.

China eastern was fantastic. I had read so many bad reviews that had made me nervous. However, I found that the flight attendant’s, and customer service check in etc. etc. was excellent. I had no problems. I would fly with them again!

Excellent! I had read some negative reviews but I found out that it was not all was not true! The staff was courteous and helpful. The flight take off and landing was nice & easy. The food was good! I asked for a second and I got it easily and without an attitude! All was wonderful!

Excellent experience however older aeroplanes used by China Eastern Airlines.

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