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

Return flights

16 Oct - 20 Oct	T'way Air
13 Oct - 23 Oct	T'way Air
23 Oct - 27 Oct	Jin Air
14 Oct - 23 Oct	Jin Air
23 Oct - 26 Oct	Jeju Air
23 Oct - 30 Oct	Jin Air
22 Oct - 23 Oct	Air Busan
18 Oct - 20 Oct	Jin Air
22 Oct - 25 Oct	T'way Air
15 Oct - 18 Oct	Jin Air
31 Oct - 04 Nov	Eastar Jet
22 Oct - 26 Nov	Korean Air
11 Oct - 03 Nov	Korean Air
30 Oct - 03 Nov	Air China
21 Oct - 27 Nov	Korean Air
31 Oct - 02 Nov	Korean Air
28 Oct - 04 Nov	Air China
29 Oct - 02 Nov	Air China
31 Oct - 17 Nov	Air China
29 Oct - 01 Nov	ANA

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 158€

Return flights