Cheap flights from Seoul to London from £166

In general, November is the cheapest month to fly from Seoul to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £518. The month of March is another great option to travel to London Heathrow Airport, with average flight prices from Seoul averaging around £567.

On average, the least expensive day to fly to London Heathrow Airport from Seoul is on a Monday. momondo users have found tickets for Monday departures for as low as £587. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Thursday is £745.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from Seoul to London Heathrow Airport in the morning for as low as £652. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are £692 on average. Flights to London Heathrow Airport from Seoul at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to London Heathrow Airport from Seoul when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £655 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Seoul for as low as £510 on momondo.

There are 2 cabin classes available to choose from on Seoul to London Heathrow Airport 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 32% on your flight if you consider stops on a Seoul to London Heathrow Airport flight.

As of August 2026, prices for Seoul to London Heathrow Airport flights are approximately 9% cheaper when compared to flights at the same time last year.

Vietnam Airlines, Shenzhen Airlines, and Oman Air are the most popular carriers operating from Seoul to London Heathrow

Asiana Airlines, Virgin Atlantic and Air China are the top three most popular airlines that fly to London Heathrow Airport from Seoul according to our data. Asiana Airlines is the first choice among our users, with 46% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 3 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

As of August 2026, there are 5 flights per day flying from Seoul to London Heathrow Airport. The most common time of day flights depart is 10:00, with 63% of flights taking off at midday.

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