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

Return flights

30 Dec - 06 Jan	Eastar Jet
31 Dec - 07 Jan	T'way Air
30 Dec - 02 Jan	Jin Air
31 Dec - 02 Jan	T'way Air
29 Dec - 06 Jan	Korean Air
31 Dec - 03 Jan	Air Busan
30 Dec - 04 Jan	Eastar Jet
29 Dec - 03 Jan	T'way Air
27 Dec - 03 Jan	Asiana Airlines
29 Dec - 01 Jan	Eastar Jet
27 Dec - 29 Dec	Asiana Airlines
27 Dec - 30 Dec	Jeju Air
30 Dec - 31 Dec	Air Busan
28 Dec - 30 Dec	Jin Air
28 Dec - 31 Dec	Eastar Jet

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

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 December from 172€

Return flights