Cheap flights from Incheon Intl Airport to London from £144

In general, November is the cheapest month to fly from Incheon Intl Airport to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £506. The month of March is another great option to travel to London Heathrow Airport, with average flight prices from Incheon Intl Airport averaging around £556.

On average, the least expensive day to fly to London Heathrow Airport from Incheon Intl Airport is on a Friday. momondo users have found tickets for Friday departures for as low as £504. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £702.

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

You are more likely to see cheaper flights to London Heathrow Airport from Incheon Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £676 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Incheon Intl Airport for as low as £551 on momondo.

There are 4 cabin classes available to choose from on Incheon Intl to London Heathrow 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 Incheon Intl Airport to London Heathrow Airport flight.

China Eastern is the most popular carrier operating from Incheon Intl to London Heathrow

Asiana Airlines, Air China and Korean Air are the top three most popular airlines that fly to London Heathrow Airport 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 Heathrow Airport. Keep in mind that there are 4 different airlines that fly to London Heathrow Airport 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.

As of March 2026, there are 3 flights per day flying from Incheon Intl Airport to London Heathrow Airport. 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 Heathrow Airport 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.