Cheap flights from Incheon Intl Airport to London from $308

The month of November is, on average, the cheapest month to fly to London Heathrow Airport from Incheon Intl Airport, with most prices found around $677. If you’re not able to fly to London Heathrow Airport in November, then March is your next best option. Flight prices from Incheon Intl Airport to London Heathrow Airport during March average around $752.

Our data shows that Saturday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $776. The most expensive day to fly to London Heathrow Airport is Sunday, with ticket prices averaging around $1,258.

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 $888 when searching weeks out. 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 $690 on momondo.

There are 3 cabin classes available to choose from on Incheon Intl Airport to London Heathrow Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Incheon Intl Airport to London Heathrow Airport.

Air China and China Eastern are the most popular carriers operating from Incheon Intl to London Heathrow

Asiana Airlines, Air China and Lufthansa 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 60% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 3 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 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 in the early afternoon have, in the past, seen delays more frequently in comparison.

Thursday is statistically the day of the week which experiences the fewest number of 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 least number of 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: 50% of momondo users choosing 1-stop flights on this route connected there.

Flights via Amsterdam (AMS) offer the lowest average round-trip price of $1,002.

Flights connecting via Beijing (PEK) have the shortest average one-way travel time: 15h 33m.

Frankfurt am Main (FRA) has the shortest average layover time for this route: 1h 25m.

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

As of June 2026, 33 flights take off from Incheon Intl Airport and land in London Heathrow Airport each week. The most common flight departure day for this route is Tue, with 15% of weekly flights taking off on this day.