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

Return flights

14 Sep - 30 Sep	Etihad Airways
09 Sep - 17 Sep	Etihad Airways
16 Sep - 01 Oct	Etihad Airways
29 Sep - 29 Oct	Air India
18 Sep - 01 Oct	Etihad Airways
05 Sep - 27 Sep	Air India
30 Sep - 29 Oct	Pegasus Airlines
04 Sep - 20 Sep	Etihad Airways
05 Sep - 22 Sep	Etihad Airways
30 Sep - 30 Oct	AJet
26 Sep - 08 Oct	Etihad Airways
05 Sep - 21 Sep	Air China
28 Sep - 06 Oct	Air India
19 Sep - 26 Sep	Air India
06 Sep - 21 Sep	Air China
27 Sep - 04 Oct	IndiGo
27 Sep - 28 Oct	Norwegian Air Sweden AOC
06 Sep - 07 Sep	IndiGo
09 Sep - 17 Sep	Singapore Airlines	direct
30 Sep - 29 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 533€

Return flights