Cheap flights from London to Seoul from $348

The cheapest month to fly to Incheon Intl Airport from London is in November. Flight prices, which tend to average around $533, are often lower during this time because this is during the off-season. If you are unable to visit Incheon Intl Airport during the month of November, then departing from London during the month January is also very affordable. Most momondo users find prices during this month for around $589.

The cheapest day to depart from London to Incheon Intl Airport is on a Wednesday when prices can be found for as low as $1,171. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around $1,298. These prices are subject to change though, so be sure to set up a Price Alert for flights to Incheon Intl Airport.

At noon is the cheapest time of day to fly from London to Incheon Intl Airport when you can find flight prices for as low as $978. Flying to Incheon Intl Airport at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $1,277 on average. Flights to Incheon Intl Airport from London in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Incheon Intl Airport from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Incheon Intl Airport for around $926 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Incheon Intl Airport from London for as low as $838 on momondo.

There are 3 cabin classes available to choose from on London to Incheon Intl 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 9% on your flight if you consider stops on a London to Incheon Intl Airport flight.

As of March 2026, prices for London to Incheon Intl Airport flights are approximately 10% cheaper when compared to flights at the same time last year.

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

Lufthansa, Asiana Airlines and Korean Air are the top three most popular airlines that fly to Incheon Intl Airport from London according to our data. Lufthansa is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Incheon Intl Airport. Keep in mind that there are 4 different airlines that fly to Incheon Intl Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 13% of flights between London and Incheon have experienced a delay on any given week. The average delay length over the past 12 months has been 113 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

According to our data, Asiana Airlines have had the least number of delays on this route over the last 12 months; with about 11% of their flights experiencing any sort of delay.

Munich (MUC) was the most common stop: 56% of momondo users choosing 1-stop flights on this route connected there.

Flights via Shanghai (PVG) offer the lowest average round-trip price of $1,070.

Flights connecting via Shanghai (PVG) have the shortest average one-way travel time: 15h 00m.

Munich (MUC) has the shortest average layover time for this route: 1h 43m.

As of March 2026, there are 3 flights per day flying from London to Incheon Intl Airport. The most common time of day flights depart is 6:00PM, with 100% of flights taking off in the evening.

21 flights are operational weekly from London to Incheon Intl 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.