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

Return flights

23 Sep - 12 Oct	Ryanair
22 Sep - 12 Oct	Hainan Airlines
22 Sep - 16 Oct	Hainan Airlines
23 Sep - 16 Oct	Hainan Airlines
24 Sep - 16 Oct	Hainan Airlines
24 Sep - 09 Oct	Air France
20 Sep - 28 Oct	Ryanair
20 Sep - 16 Oct	Ryanair
13 Sep - 10 Oct	Ryanair
29 Sep - 15 Oct	KLM
22 Sep - 29 Sep	Ryanair
24 Sep - 29 Sep	Ryanair
22 Sep - 27 Sep	Ryanair
08 Sep - 17 Sep	Ryanair
26 Sep - 29 Sep	Ryanair
23 Sep - 27 Sep	Ryanair
12 Sep - 23 Sep	Ryanair
08 Sep - 13 Sep	Ryanair
09 Sep - 21 Sep	Ryanair
17 Sep - 22 Sep	easyJet

Also check the deals for one-way flights from Manchester 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.

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Cheapest return flights from Manchester to Seoul in September from 610€

Return flights