Cheap flights from Incheon Intl Airport to London from £225

The cheapest month to fly to London from Incheon Intl Airport is in September. Flight prices, which tend to average around £102, 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 £122.

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 £540. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Incheon Intl Airport to London for around £722.

The cheapest time of day to fly to London is in the morning when flights can be purchased for as low as £647. Flights at midday are often more expensive, with an average ticket price of £694.

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 £661 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 £514 on momondo.

There are 4 cabin classes available to choose from on Incheon Intl Airport 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 49% on your flight if you consider stops on a Incheon Intl Airport to London flight.

As of June 2026, prices for Incheon Intl Airport to London flights are approximately 19% cheaper when compared to flights at the same time last year.

AirAsia X, Air China, and China Eastern 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 44% 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 27% 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 95 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. Friday 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 21% of their flights experiencing any sort of delay.

Beijing (PEK) was the most common stop: 25% of momondo users choosing one-stop flights on this route connected there.

Flights via Beijing (PEK) offer the lowest average return price of £470.

Flights connecting via Beijing (PEK) have the shortest average one-way travel time: 15h 27m.

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

As of June 2026, there are 4 flights per day flying from Incheon Intl Airport to London. The most common time of day flights depart is 10:00, with 63% of flights taking off at midday.

33 flights are operational weekly from Incheon Intl Airport to London as of June 2026. The most popular departure day for this route is Tue, with 15% of flights per week taking off on this day.