Cheap flights from Seoul to London from $234

The cheapest month to fly to London from Seoul is in April. Flight prices, which tend to average around $178, are often lower during this time because this is during the off-season. The month of December is another great option to travel to London, with average flight prices from Seoul averaging around $227.

The cheapest day to depart from Seoul 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 $1,236. 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 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 $903 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Seoul for as low as $690 on momondo.

You could potentially save up to 3% on your flight if you consider stops on a Seoul to London flight.

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

Asiana Airlines, Lufthansa and Korean Air 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 51% of people opting to fly with this airline when traveling to London. Keep in mind that there are 4 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Shanghai (PVG) was the most common stop: 53% of momondo users choosing 1-stop flights on this route connected there.

Flights via Shanghai (PVG) offer the lowest average round-trip price of $486.

Flights connecting via Beijing (PEK) have the shortest average one-way travel time: 14h 03m.

Abu Dhabi (AUH) has the shortest average layover time for this route: 1h 15m.

As of May 2026, there are 5 flights per day flying from Seoul to London. The most common time of day flights depart is 10:00AM, with 60% of flights taking off at noon.

The number of flights available between Seoul and London is 35 per week as of May 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.