AirHint found the following cheapest return flights from Islamabad (ISB) to Seoul (ICN) in December 2025 (see full year).

Return flights

14 Dec - 23 Jan	Air China
14 Dec - 22 Jan	Air China
14 Dec - 23 Dec	Air China
15 Dec - 23 Dec	PIA
15 Dec - 22 Dec	PIA
14 Dec - 22 Dec	China Southern
14 Dec - 24 Dec	Air China
13 Dec - 20 Dec	Uzbekistan Airways
21 Dec - 30 Dec	Air China
15 Dec - 24 Dec	China Southern
28 Dec - 04 Jan	China Southern
07 Dec - 14 Dec	China Southern
08 Dec - 15 Dec	Thai Airways
29 Dec - 05 Jan	Thai Airways

Also check the deals for one-way flights from Islamabad to Seoul 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 Islamabad to Seoul in December from 638€

Return flights