Cheapest return flights from London to Seoul in September from 737€

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

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

Return flights

09 Sep - 24 Sep SWISS
03 Sep - 18 Sep KLM
04 Sep - 11 Sep ITA Airways
11 Sep - 17 Sep ITA Airways
04 Sep - 25 Sep ITA Airways
08 Sep - 17 Sep KLM
03 Sep - 16 Sep KLM
10 Sep - 24 Sep Lufthansa
08 Sep - 24 Sep Lufthansa
03 Sep - 17 Sep KLM
22 Sep - 22 Oct Lufthansa
20 Sep - 19 Oct KLM
26 Sep - 10 Oct KLM
13 Sep - 12 Oct KLM
03 Sep - 01 Oct KLM
06 Sep - 05 Oct KLM
02 Sep - 01 Oct KLM
26 Sep - 05 Oct KLM
27 Sep - 05 Oct KLM
26 Sep - 03 Oct KLM

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