Cheap flights from South Korea to London from £135

The cheapest month to fly to London from South Korea is in June. Flight prices, which tend to average around £481, are often lower during this time because this is during the off-season. The month of January is another great option to travel to London, with average flight prices from South Korea averaging around £517.

Our data shows that Friday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £505. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from South Korea to London for around £750.

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

You are more likely to see cheaper flights to London from South Korea when booking weeks ahead of your departure date. In general, you can expect to find flights to London 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 from South Korea for as low as £552 on momondo.

There are 4 cabin classes available to choose from on South Korea to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 1% on your flight if you consider stops on a South Korea to London flight.

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

Asiana Airlines, Air China and Korean Air are the top three most popular airlines that fly to London 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. Keep in mind that there are 5 different airlines that fly to London 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 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. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.