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

Return flights

01 Dec - 07 Dec	Indonesia AirAsia
07 Dec - 16 Dec	Indonesia AirAsia
11 Dec - 14 Dec	Indonesia AirAsia
05 Dec - 08 Dec	Indonesia AirAsia
10 Dec - 15 Dec	Indonesia AirAsia
11 Dec - 16 Dec	Indonesia AirAsia
11 Dec - 17 Dec	Indonesia AirAsia
12 Dec - 17 Dec	Indonesia AirAsia
09 Dec - 13 Dec	Indonesia AirAsia
06 Dec - 12 Dec	Malaysia Airlines
16 Dec - 12 Jan	Indonesia AirAsia
27 Dec - 03 Jan	Royal Brunei
17 Dec - 02 Jan	Citilink
16 Dec - 01 Jan	Indonesia AirAsia
29 Dec - 05 Jan	Scoot
28 Dec - 04 Jan	Scoot
27 Dec - 04 Jan	Citilink

Also check the deals for one-way flights from Surabaya 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 Surabaya to Seoul in December from $225

Return flights