AirHint found the following cheapest return flights from London (LTN) to Seoul (ICN) in September 2026 (see full year).

Return flights

04 Sep - 12 Sep	Wizz Air
03 Sep - 18 Sep	Ryanair
01 Sep - 10 Sep	Ryanair
10 Sep - 25 Sep	Ryanair
17 Sep - 01 Oct	Ryanair
23 Sep - 01 Oct	Wizz Air
08 Sep - 18 Sep	Ryanair
17 Sep - 28 Sep	Ryanair
09 Sep - 18 Sep	Ryanair
14 Sep - 28 Sep	Ryanair
01 Sep - 14 Sep	Ryanair
10 Sep - 17 Sep	Ryanair
30 Sep - 04 Oct	Ryanair
26 Sep - 03 Oct	Ryanair
18 Sep - 03 Oct	Wizz Air Malta
19 Sep - 03 Oct	Wizz Air
21 Sep - 04 Oct	Ryanair
25 Sep - 02 Oct	Wizz Air Malta
22 Sep - 06 Oct	Ryanair
21 Sep - 03 Oct	Wizz Air

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

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

Cheapest return flights from London to Seoul in September from 682€

Return flights