Cheap flights from Seoul to London from $194

The cheapest month to fly to London from Seoul is in June. Flight prices, which tend to average around $670, are often lower during this time because this is during the off-season. The month of January is another great option to travel to London, with average flight prices from Seoul averaging around $691.

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 $1,111. 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 $895 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 $696 on momondo.

There are 3 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 6% on your flight if you consider stops on a Seoul to London flight.

AirAsia X, Etihad Airways, and China Eastern are the most popular carriers operating from Seoul to London

Asiana Airlines, Korean Air and Lufthansa 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 56% 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.

Historically, on average around 0% of flights between Seoul and London 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 morning tend to experience fewer delays. Flights in the morning have, in the past, seen delays more frequently in comparison.

Shanghai (PVG) was the most common stop: 54% 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.

The number of flights available between Seoul and London is 5 per week as of March 2026. The most frequent departure day is Sat, with 60% of weekly flights leaving on this day.

If you’re flying from a popular airport in Seoul, such as Incheon or Seoul, and flying into London, then you can expect flight times to average 14h 25m and 19h 50m, respectively.