Cheap flights from Incheon Intl Airport to London from $306

The cheapest month to fly to London from Incheon Intl Airport is in September. Flight prices, which tend to average around $137, 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 $164.

The cheapest day to depart from Incheon Intl Airport to London is on a Saturday. Travelers who choose to depart for London on a Saturday will often find tickets for as low as $776. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $1,258. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

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 $884 when searching weeks out. 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 $690 on momondo.

There are 3 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 1% on your flight if you consider stops on a Incheon Intl Airport to London flight.

Etihad Airways, Lufthansa, and Oman Air are the most popular carriers operating from Incheon Intl to London

Asiana Airlines, Lufthansa 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 61% of people opting to fly with this airline when traveling to London. Keep in mind that there are 3 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 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: 44% of momondo users choosing 1-stop flights on this route connected there.

Flights via Beijing (PEK) offer the lowest average round-trip price of $813.

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, 4 flights take off from Incheon Intl Airport and land in London each day. The most common flight departure time for this route is 10:00AM, with 63% of daily flights taking off at noon.

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