Cheap flights from London Heathrow Airport to Seoul from $279

The cheapest month to fly to Incheon Intl Airport from London Heathrow Airport is in January. Flight prices, which tend to average around $623, 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 January, then departing from London Heathrow Airport during the month November is also very affordable. Most momondo users find prices during this month for around $818.

The cheapest day to depart from London Heathrow Airport to Incheon Intl Airport is on a Monday 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 $1,339. These prices are subject to change though, so be sure to set up a Price Alert for flights to Incheon Intl Airport.

In the afternoon is the cheapest time of day to fly from London Heathrow Airport to Incheon Intl Airport when you can find flight prices for as low as $1,192. Flying to Incheon Intl Airport in the afternoon 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 $1,285 on average. Flights to Incheon Intl Airport from London Heathrow Airport 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 Heathrow - Incheon Intl flight prices

You are more likely to see cheaper flights to Incheon Intl Airport from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Incheon Intl Airport for around $942 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 Heathrow Airport for as low as $755 on momondo.

There are 4 cabin classes available to choose from on London Heathrow Airport to Incheon Intl Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Shenzhen Airlines, Finnair, and China Eastern are the most popular carriers operating from London Heathrow to Incheon Intl

Lufthansa, Asiana Airlines and Korean Air are the top three most popular airlines that fly to Incheon Intl Airport from London Heathrow Airport according to our data. Lufthansa is the first choice among our users, with 33% 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 10% 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 130 minutes.

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

Monday 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 8% of their flights experiencing any sort of delay.

As of June 2026, 4 flights take off from London Heathrow Airport and land in Incheon Intl Airport each day. The most common flight departure time for this route is 7:00PM, with 59% of daily flights taking off in the afternoon.

As of June 2026, 32 flights take off from London Heathrow Airport and land in Incheon Intl Airport each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.