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

Return flights

16 Dec - 23 Dec	Uzbekistan Airways
13 Dec - 05 Jan	Uzbekistan Airways
16 Dec - 28 Dec	Uzbekistan Airways
15 Dec - 27 Dec	China Southern
27 Dec - 02 Jan	Uzbekistan Airways
16 Dec - 26 Dec	Uzbekistan Airways
22 Dec - 26 Dec	Air China
28 Dec - 03 Jan	Air China
17 Dec - 26 Dec	Thai Airways
16 Dec - 27 Dec	Air China
21 Dec - 24 Dec	Air China
15 Dec - 17 Dec	Thai Airways
22 Dec - 25 Dec	Air China
27 Dec - 03 Jan	Thai Airways
28 Dec - 04 Jan	Air China
24 Dec - 04 Jan	Qatar 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 $923

Return flights