AirHint found the following cheapest return flights from Surabaya (SUB) to Seoul (ICN) in April 2026 (see full year).

Return flights

09 Apr - 21 Apr	Singapore Airlines
10 Apr - 22 Apr	Singapore Airlines
06 Apr - 15 Apr	Singapore Airlines
07 Apr - 21 Apr	Indonesia AirAsia
07 Apr - 16 Apr	Scoot
08 Apr - 21 Apr	Indonesia AirAsia
10 Apr - 21 Apr	Indonesia AirAsia
08 Apr - 17 Apr	Malaysia Airlines
06 Apr - 21 Apr	Indonesia AirAsia
09 Apr - 16 Apr	Indonesia AirAsia

Also check the deals for one-way flights from Surabaya to Seoul in April.

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 April from $346

Return flights