Cheap flights from London to Seoul from £251

The month of November is, on average, the cheapest month to fly to Seoul from London, with most prices found around £430. If you are unable to visit Seoul 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 £453.

The cheapest day to depart from London to Seoul is on a Tuesday when prices can be found for as low as £884. Flights from London to Seoul on a Saturday will generally be more expensive and average around £1,051. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our most recent data shows that the best time of day to fly to Seoul is at midday. Flights from London to Seoul during this time can be as low as £644. Flights in the evening are often more expensive, with an average ticket price of £958.

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

You are more likely to see cheaper flights to Seoul from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Seoul for around £696 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seoul from London for as low as £592 on momondo.

There are 4 cabin classes available to choose from on London to Seoul 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 12% on your flight if you consider stops on a London to Seoul flight.

As of March 2026, prices for London to Seoul flights are approximately 7% cheaper when compared to flights at the same time last year.

China Eastern, Air China, and Tianjin Airlines are the most popular carriers operating from London to Seoul

Asiana Airlines, Korean Air and Lufthansa are the top three most popular airlines that fly to Seoul from London according to our data. Asiana Airlines is the first choice among our users, with 35% of people opting to fly with this airline when travelling to Seoul. Keep in mind that there are 16 different airlines that fly to Seoul on a routine basis, so you have a few additional options to choose from.

Historically, on average around 0% of flights between London and Seoul have experienced a delay on any given week. The average delay length over the past 12 months has been 0 minutes.

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

Beijing (PEK) was the most common stop: 23% of momondo users choosing one-stop flights on this route connected there.

Flights via Shanghai (PVG) offer the lowest average return price of £362.

Flights connecting via Copenhagen (CPH) have the shortest average one-way travel time: 14h 45m.

Zurich (ZRH) has the shortest average stopover time for this route: 1h 40m.

The number of flights available between London and Seoul is 3 per day as of March 2026. The most frequent departure time is 18:00, with 100% of daily flights leaving in the evening.

The number of flights available between London and Seoul is 21 per week as of March 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.