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

Return flights

09 Sep - 09 Oct	China Southern
09 Sep - 10 Oct	China Southern
14 Sep - 10 Oct	KLM
01 Sep - 14 Sep	Ryanair
15 Sep - 10 Oct	KLM
24 Sep - 09 Oct	Ryanair
13 Sep - 18 Sep	Air France
04 Sep - 19 Sep	easyJet
27 Sep - 11 Oct	Ryanair
03 Sep - 19 Sep	KLM
02 Sep - 12 Sep	KLM
26 Sep - 13 Oct	Lufthansa
08 Sep - 18 Sep	KLM
14 Sep - 21 Sep	Ryanair
11 Sep - 21 Sep	Finnair
04 Sep - 14 Sep	Finnair
08 Sep - 14 Sep	Finnair
26 Sep - 18 Oct	Air France
24 Sep - 07 Oct	KLM
24 Sep - 01 Oct	Ryanair

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 $757

Return flights