Cheap flights from London to South Korea from £251

The month of November is, on average, the cheapest month to fly to South Korea from London, with most prices found around £429. If you’re not able to fly to South Korea in November, then January is your next best option. Flight prices from London to South Korea during January average around £453.

The cheapest day to depart from London to South Korea is on a Tuesday when prices can be found for as low as £884. On the other hand, Saturday is the most expensive day to depart from London because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £1,049.

Flying to South Korea from London at midday is the least expensive time of day to depart. momondo users have found prices as low as £644 when looking at flights departing at midday. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £958 on average. Flights to South Korea from London in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to South Korea from London when booking weeks ahead of your departure date. In general, you can expect to find flights to South Korea for around £695 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to South Korea from London for as low as £592 on momondo.

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

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

Asiana Airlines, Korean Air and Lufthansa are the top three most popular airlines that fly to South Korea from London according to our data. Asiana Airlines is the first choice among our users, with 35% of people opting to fly with this airline when travelling to South Korea. Keep in mind that there are 16 different airlines that fly to South Korea on a routine basis, so you have a few additional options to choose from.

Historically, on average around 12% of flights between London and South Korea have experienced a delay on any given week. The average delay length over the past 12 months has been 115 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

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

According to our data, Asiana Airlines have had the fewest delays on this route over the last 12 months, with about 10% of their flights experiencing any sort of delay.

As of March 2026, there are 3 flights per day flying from London to South Korea. The most common time of day flights depart is 18:00, with 100% of flights taking off in the evening.

The number of flights available between London and South Korea is 21 per week as of March 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.