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

Return flights

14 Apr - 23 Apr	Indonesia AirAsia
26 Apr - 06 May	Scoot
23 Apr - 28 Apr	Indonesia AirAsia
12 Apr - 22 Apr	Scoot
30 Apr - 09 May	Indonesia AirAsia
12 Apr - 17 Apr	Scoot
11 Apr - 21 Apr	China Southern
09 Apr - 13 Apr	China Southern
05 Apr - 12 Apr	China Southern
05 Apr - 10 Apr	China Southern
25 Apr - 01 May	Scoot
09 Apr - 18 Apr	China Southern
28 Apr - 02 May	Scoot
29 Apr - 04 May	Scoot
25 Apr - 30 Apr	Scoot
30 Apr - 03 May	Indonesia AirAsia
24 Apr - 01 May	Scoot

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 $284

Return flights