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

Return flights

14 Dec - 17 Dec	Korean Air
08 Dec - 15 Dec	Korean Air
25 Dec - 28 Dec	Asiana Airlines
22 Dec - 26 Dec	Air China
26 Dec - 30 Dec	Air China
06 Dec - 09 Dec	ANA
20 Dec - 24 Dec	ANA
08 Dec - 12 Dec	ANA
02 Dec - 05 Dec	ANA
08 Dec - 11 Dec	ANA
30 Dec - 02 Jan	ANA
31 Dec - 07 Jan	ANA
24 Dec - 02 Jan	ANA
30 Dec - 04 Jan	ANA
30 Dec - 03 Jan	ANA
29 Dec - 01 Jan	ANA
25 Dec - 02 Jan	ANA
31 Dec - 05 Jan	ANA
24 Dec - 04 Jan	ANA
24 Dec - 01 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 $348

Return flights