Cheapest return flights from London to Seoul in September from $579

Best time to book flights for London (LON) to Seoul (ICN) flights at AirHint

AirHint found the following cheapest return flights from London (LON) to Seoul (ICN) in September 2025 (see full year).

Return flights

01 Sep - 06 Oct Air China
18 Sep - 25 Oct Air China
24 Sep - 10 Oct Air China
01 Sep - 12 Oct Air China
05 Sep - 20 Oct Air China
03 Sep - 24 Oct Air China
03 Sep - 16 Sep Etihad Airways
01 Sep - 16 Sep Etihad Airways
22 Sep - 29 Sep Air China
04 Sep - 19 Sep Etihad Airways
16 Sep - 23 Sep Etihad Airways
08 Sep - 20 Sep Etihad Airways
08 Sep - 18 Sep Etihad Airways
15 Sep - 22 Sep Etihad Airways
08 Sep - 21 Sep Etihad Airways
22 Sep - 07 Oct Etihad Airways
25 Sep - 13 Oct Etihad Airways
25 Sep - 10 Oct Etihad Airways
01 Sep - 15 Sep Etihad Airways
25 Sep - 07 Oct Etihad Airways

Also check the deals for one-way flights from London to Seoul in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Seoul

Cheap car rent in Seoul