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

Return flights

22 May - 25 May	Jeju Air
14 May - 16 May	Korean Air
09 May - 16 May	Korean Air
28 May - 30 May	Korean Air
16 May - 18 May	Korean Air
09 May - 11 May	Korean Air
28 May - 01 Jun	Korean Air
30 May - 01 Jun	Korean Air
14 May - 27 May	Korean Air
07 May - 09 May	Korean Air
16 May - 27 May	Korean Air
07 May - 12 May	Korean Air
14 May - 06 Jun	Korean Air
14 May - 11 Jun	Korean Air
30 May - 02 Jun	Korean Air
09 May - 02 Jun	Korean Air
28 May - 03 Jun	Korean Air
30 May - 06 Jun	Korean Air
30 May - 05 Jun	Korean Air
31 May - 04 Jun	Korean Air

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

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 May from $288

Return flights