Cheap flights from Incheon Intl Airport to London from £144

The cheapest month to fly to London from Incheon Intl Airport is in March. Flight prices, which tend to average around £397, are often lower during this time because this is during the off-season. The month of May is another great option to travel to London, with average flight prices from Incheon Intl Airport averaging around £425.

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 £508. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Incheon Intl Airport to London for around £702.

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 £674 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 £524 on momondo.

There are 4 cabin classes available to choose from on Incheon Intl 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 13% on your flight if you consider stops on a Incheon Intl Airport to London flight.

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

Asiana Airlines, Air China and Korean Air 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 57% 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 96 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: 43% of momondo users choosing one-stop flights on this route connected there.

Flights via Istanbul (IST) offer the lowest average return price of £525.

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 March 2026, there are 3 flights per day flying from Incheon Intl Airport to London. The most common time of day flights depart is 10:00, with 66% of flights taking off at midday.

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