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

Return flights

21 Aug - 27 Aug	T'way Air
21 Aug - 26 Aug	T'way Air
25 Aug - 27 Aug	Jin Air
21 Aug - 28 Aug	Jeju Air
21 Aug - 24 Aug	T'way Air
20 Aug - 27 Aug	T'way Air
21 Aug - 25 Aug	T'way Air
28 Aug - 30 Aug	Air Busan
18 Aug - 21 Aug	Air Seoul, Inc
18 Aug - 06 Sep	Jin Air
24 Aug - 27 Aug	Eastar Jet
30 Aug - 02 Sep	Korean Air
28 Aug - 04 Sep	Korean Air
30 Aug - 01 Sep	Korean Air
27 Aug - 02 Sep	Korean Air
26 Aug - 09 Sep	Korean Air
29 Aug - 03 Sep	Korean Air
28 Aug - 02 Sep	Korean Air
30 Aug - 04 Sep	Korean Air
30 Aug - 05 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 178€

Return flights