Cheap flights from South Korea to London from £136

In general, November is the cheapest month to fly from South Korea to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £529. The month of March is another great option to travel to London Heathrow Airport, with average flight prices from South Korea averaging around £549.

On average, the least expensive day to fly to London Heathrow Airport from South Korea is on a Friday. momondo users have found tickets for Friday departures for as low as £505. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Wednesday is £750.

Fly from Incheon Intl to London Heathrow for the best South Korea - London Heathrow flight prices

You are more likely to see cheaper flights to London Heathrow Airport from South Korea when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £668 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from South Korea for as low as £552 on momondo.

China Eastern, Shenzhen Airlines, and Vietnam Airlines are the most popular carriers operating from South Korea to London Heathrow

Asiana Airlines, Air China and Korean Air are the top three most popular airlines that fly to London Heathrow Airport from South Korea according to our data. Asiana Airlines is the first choice among our users, with 58% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 5 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 30% of flights between South Korea and London have experienced a delay on any given week. The average delay length over the past 12 months has been 97 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Thursday is statistically the day of the week that experiences the fewest delays on this flight route. Monday has historically seen more delays on average compared to the rest of the week.

According to our data, Korean Air have had the fewest delays on this route over the last 12 months, with about 22% of their flights experiencing any sort of delay.

3 flights are operational daily from South Korea to London Heathrow Airport as of March 2026. The most popular departure time for this route is 10:00, with 66% of flights per day taking off at midday.

As of March 2026, there are 21 flights per week flying from South Korea to London Heathrow Airport. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.