Cheap flights from Incheon Intl Airport to London from £146

The cheapest month to fly to London from Incheon Intl Airport is in September. Flight prices, which tend to average around £101, 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 Incheon Intl Airport averaging around £121.

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 £518. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Incheon Intl Airport to London for around £713.

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

You are more likely to see cheaper flights to London from Incheon Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £672 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 Incheon Intl Airport for as low as £528 on momondo.

You could potentially save up to 49% on your flight if you consider stops on a Incheon Intl Airport to London flight.

Shenzhen Airlines, China Eastern, and Etihad Airways are the most popular carriers operating from Incheon Intl to London

Asiana Airlines, Virgin Atlantic and Air China are the top three most popular airlines that fly to London from Incheon Intl Airport according to our data. Asiana Airlines is the first choice among our users, with 51% of people opting to fly with this airline when travelling to London. Keep in mind that there are 4 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 Incheon and London have experienced a delay on any given week. The average delay length over the past 12 months has been 93 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.

Copenhagen (CPH) was the most common stop: 50% of momondo users choosing one-stop flights on this route connected there.

Flights via Istanbul (IST) offer the lowest average return price of £516.

Flights connecting via Warsaw (WAW) have the shortest average one-way travel time: 17h 30m.

Warsaw (WAW) has the shortest average stopover time for this route: 1h 45m.

As of May 2026, there are 5 flights per day flying from Incheon Intl Airport to London. The most common time of day flights depart is 10:00, with 60% of flights taking off at midday.

35 flights are operational weekly from Incheon Intl Airport to London as of May 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.