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

Return flights

15 Sep - 21 Sep	Air China
04 Sep - 22 Sep	Air China
09 Sep - 16 Sep	Air China
08 Sep - 22 Sep	Air China
16 Sep - 23 Sep	Air China
10 Sep - 23 Sep	Air China
06 Sep - 14 Sep	Air China
17 Sep - 24 Sep	Air China
06 Sep - 20 Sep	Air China
08 Sep - 24 Sep	Air China
25 Sep - 02 Oct	Etihad Airways
25 Sep - 13 Oct	Etihad Airways
07 Sep - 11 Oct	Etihad Airways
04 Sep - 02 Oct	Etihad Airways
25 Sep - 14 Oct	Etihad Airways
22 Sep - 05 Oct	Etihad Airways
22 Sep - 06 Oct	Finnair
19 Sep - 05 Oct	Etihad Airways
12 Sep - 03 Oct	Etihad Airways
16 Sep - 01 Oct	Etihad Airways

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Singapore in September from $658

Return flights