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

Return flights

02 Dec - 09 Dec	T'way Air
03 Dec - 10 Dec	T'way Air
14 Dec - 17 Dec	Korean Air
17 Dec - 24 Dec	Korean Air
07 Dec - 10 Dec	Korean Air
06 Dec - 10 Dec	Korean Air
08 Dec - 11 Dec	Air China
13 Dec - 16 Dec	Air China
06 Dec - 09 Dec	Air China
25 Dec - 28 Dec	Jeju Air
29 Dec - 02 Jan	Air China
30 Dec - 03 Jan	Korean Air
31 Dec - 03 Jan	Korean Air
27 Dec - 01 Jan	Korean Air
28 Dec - 01 Jan	Air China
23 Dec - 06 Jan	ANA
26 Dec - 05 Jan	ANA
24 Dec - 04 Jan	ANA
30 Dec - 04 Jan	ANA
30 Dec - 07 Jan	ANA

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 $158

Return flights