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

Return flights

20 Sep - 23 Sep	IndiGo
15 Sep - 22 Sep	IndiGo
20 Sep - 27 Sep	IndiGo
18 Sep - 30 Sep	Etihad Airways
27 Sep - 05 Oct	Air India
26 Sep - 05 Oct	Air India
03 Sep - 13 Sep	Air India
21 Sep - 04 Oct	Air India
19 Sep - 30 Sep	IndiGo
18 Sep - 01 Oct	Finnair
19 Sep - 01 Oct	Finnair
08 Sep - 13 Sep	IndiGo
15 Sep - 31 Oct	Air India
13 Sep - 16 Sep	Etihad Airways
13 Sep - 23 Sep	Etihad Airways
01 Sep - 27 Sep	Air India
26 Sep - 05 Oct	Singapore Airlines	direct
15 Sep - 31 Oct	Singapore Airlines	direct
21 Sep - 04 Oct	Singapore Airlines	direct
19 Sep - 01 Oct	Singapore Airlines	direct

Also check the deals for one-way flights from Singapore to Copenhagen 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 Singapore to Copenhagen in September from $646

Return flights