AirHint found the following cheapest return flights from Istanbul (IST) to Singapore (SIN) in April 2026 (see full year).

Return flights

13 Apr - 19 Apr	AirAsia X
13 Apr - 20 Apr	AirAsia X
12 Apr - 17 Apr	AirAsia X
14 Apr - 23 Apr	Gulf Air
09 Apr - 12 Apr	Gulf Air
09 Apr - 16 Apr	Gulf Air
13 Apr - 20 Apr	Singapore Airlines	direct
13 Apr - 19 Apr	Singapore Airlines	direct
14 Apr - 23 Apr	Turkish Airlines	direct
09 Apr - 16 Apr	Turkish Airlines	direct

Also check the deals for one-way flights from Istanbul to Singapore 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 Istanbul to Singapore in April from 442€

Return flights