AirHint found the following cheapest return flights from Copenhagen (CPH) to Singapore (SIN) in September 2025 (see full year).

Return flights

19 Sep - 21 Sep	Air India
09 Sep - 24 Sep	IndiGo
02 Sep - 17 Sep	IndiGo
15 Sep - 22 Sep	IndiGo
11 Sep - 17 Sep	IndiGo
08 Sep - 17 Sep	IndiGo
07 Sep - 17 Sep	IndiGo
19 Sep - 24 Sep	Etihad Airways
20 Sep - 04 Oct	Air India
26 Sep - 12 Oct	Etihad Airways
27 Sep - 12 Oct	IndiGo
02 Sep - 17 Sep	Singapore Airlines	direct
09 Sep - 24 Sep	Singapore Airlines	direct
26 Sep - 12 Oct	Singapore Airlines	direct

Also check the deals for one-way flights from Copenhagen to Singapore in September.

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 Copenhagen to Singapore in September from $591

Return flights