Cheap flights from London to Seoul from C$ 518

The cheapest month to fly to Seoul from London is in November. Flight prices, which tend to average around C$ 792, are often lower during this time because this is during the off-season. If you’re not able to fly to Seoul in November, then January is your next best option. Flight prices from London to Seoul during January average around C$ 829.

Our data shows that Saturday is the least expensive day to fly to Seoul. Tickets to fly out on this day can be as low as C$ 1,386. The most expensive day to fly to Seoul is Monday, with ticket prices averaging around C$ 1,987.

The cheapest time of day to fly to Seoul is in the afternoon when flights can be purchased for as low as C$ 1,386. In the evening is when there is more demand to fly to Seoul, so prices are often more expensive at around C$ 1,952 per ticket.

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 C$ 1,268 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seoul from London for as low as C$ 1,146 on momondo.

There is only 1 cabin class 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 65% on your flight if you consider stops on a London to Seoul flight.

As of February 2026, prices for London to Seoul flights are approximately 19% cheaper when compared to flights at the same time last year.

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.

As of February 2026, 3 flights take off from London and land in Seoul each day. The most common flight departure time for this route is 6:00p.m., with 100% of daily flights taking off in the evening.

21 flights are operational weekly from London to Seoul as of February 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.