AirHint found the following cheapest return flights from Seoul (GMP) to Shanghai (PVG) in October 2025 (see full year).

Return flights

22 Oct - 29 Oct	T'way Air
22 Oct - 25 Oct	T'way Air
13 Oct - 15 Oct	Eastar Jet
15 Oct - 19 Oct	T'way Air
30 Oct - 06 Nov	Jeju Air
10 Oct - 14 Oct	T'way Air
24 Oct - 27 Oct	Jin Air
21 Oct - 23 Oct	Jin Air
18 Oct - 21 Oct	Air China
23 Oct - 28 Oct	Air China
19 Oct - 21 Oct	Air China
30 Oct - 02 Nov	Jeju Air
31 Oct - 02 Nov	T'way Air
31 Oct - 03 Nov	Eastar Jet
13 Oct - 25 Nov	Korean Air
25 Oct - 01 Nov	Korean Air
23 Oct - 08 Nov	Korean Air
25 Oct - 04 Nov	Korean Air
30 Oct - 13 Nov	Jeju Air
22 Oct - 05 Nov	Korean Air

Also check the deals for one-way flights from Seoul to Shanghai in October.

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 Seoul to Shanghai in October from $171

Return flights