Cheap flights from Seoul to London from £166

The cheapest month to fly to London from Seoul is in November. Flight prices, which tend to average around £496, are often lower during this time because this is during the off-season. The month of March is another great option to travel to London, with average flight prices from Seoul averaging around £506.

Our data shows that Monday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £579. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Seoul to London for around £735.

The cheapest time of day to fly to London is in the morning when flights can be purchased for as low as £647. Flights at midday are often more expensive, with an average ticket price of £683.

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

You are more likely to see cheaper flights to London from Seoul when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £640 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Seoul for as low as £503 on momondo.

There are 2 cabin classes available to choose from on Seoul 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 44% on your flight if you consider stops on a Seoul to London flight.

As of August 2026, prices for Seoul to London flights are approximately 23% cheaper when compared to flights at the same time last year.

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

Asiana Airlines, Virgin Atlantic and Air China are the top three most popular airlines that fly to London from Seoul according to our data. Asiana Airlines is the first choice among our users, with 44% of people opting to fly with this airline when travelling 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.

Beijing (PEK) was the most common stop: 29% of momondo users choosing one-stop flights on this route connected there.

Flights via Beijing (PEK) offer the lowest average return price of £463.

Flights connecting via Beijing (PEK) have the shortest average one-way travel time: 15h 25m.

Warsaw (WAW) has the shortest average stopover time for this route: 1h 45m.

As of August 2026, there are 3 flights per day flying from Seoul to London. The most common time of day flights depart is 12:00, with 51% of flights taking off at midday.

The number of flights available between Seoul and London is 27 per week as of August 2026. The most frequent departure day is Mon, with 19% of weekly flights leaving on this day.