AirHint found the following cheapest return flights from Seoul (GMP) to Shanghai (PVG) in September 2026 (see full year).

Return flights

12 Sep - 14 Sep	Korean Air
10 Sep - 14 Sep	Korean Air
19 Sep - 23 Sep	Korean Air
12 Sep - 15 Sep	Korean Air
12 Sep - 16 Sep	Korean Air
17 Sep - 21 Sep	Korean Air
05 Sep - 07 Sep	Korean Air
19 Sep - 22 Sep	Korean Air
17 Sep - 23 Sep	Korean Air
19 Sep - 21 Sep	Korean Air
11 Sep - 06 Oct	Korean Air
11 Sep - 12 Oct	Korean Air
30 Sep - 04 Oct	ANA
30 Sep - 03 Oct	ANA
29 Sep - 02 Oct	ANA

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

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 September from $349

Return flights