If you're looking to fly from London Heathrow to Seoul, you might like to know that 23 / Sep / 2025 currently has the cheapest flights. At the moment, there are 16 airlines flying to Seoul. Go through the results to find the right flights for you – you can adjust the filters to see find even more flights to Seoul.
Emirates is the most popular airline that flies from London Heathrow to Seoul. But it's still worth looking at other options, as there are 11,992 flights to Seoul every week. If you want to broaden your search, look at flights departing from other airports.
The distance between London Heathrow to Seoul is 8868 km. Normally, it takes about 19 hrs 40 mins to fly, and you can definitely expect the journey to be at least 14 hrs 25 mins. You can see the various flight times in the results.
November is normally the cheapest month to fly to Seoul, but it’s important to try different options when you search. Searching by month, for instance, will show you the best time of the week to fly. September is always the most expensive time to fly but, if you check regularly and book early, you have a better chance of getting a good deal.
