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

Return flights

26 Aug - 31 Aug	Jeju Air
26 Aug - 26 Aug	Eastar Jet
25 Aug - 30 Aug	T'way Air
27 Aug - 01 Sep	T'way Air
19 Aug - 26 Aug	Air Busan
22 Aug - 25 Aug	Jin Air
18 Aug - 19 Aug	Jin Air
17 Aug - 22 Aug	Jin Air
15 Aug - 17 Aug	T'way Air
24 Aug - 29 Aug	Jeju Air
13 Aug - 17 Aug	Jin Air
30 Aug - 06 Sep	Korean Air
30 Aug - 01 Sep	Korean Air
30 Aug - 03 Sep	Korean Air
29 Aug - 01 Sep	Korean Air
28 Aug - 04 Sep	Korean Air
28 Aug - 01 Sep	Korean Air
31 Aug - 02 Sep	Korean Air
26 Aug - 05 Sep	Korean Air
13 Aug - 14 Sep	Korean Air

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

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 August from $227

Return flights