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

Return flights

01 Sep - 07 Sep	Oman Air
16 Sep - 23 Sep	KLM
01 Sep - 17 Sep	Air France
18 Sep - 10 Oct	Air France
16 Sep - 07 Oct	KLM
30 Sep - 14 Oct	Air France
15 Sep - 19 Sep	Air France
15 Sep - 23 Sep	Air France
21 Sep - 17 Oct	Air France
11 Sep - 02 Oct	Air France
09 Sep - 26 Sep	Air France
09 Sep - 10 Oct	Air France
04 Sep - 22 Oct	Turkish Airlines
21 Sep - 06 Oct	Air France
08 Sep - 30 Sep	Air India
14 Sep - 25 Sep	Air France
11 Sep - 18 Sep	Air France
01 Sep - 28 Sep	Air France
01 Sep - 01 Oct	Air France
28 Sep - 20 Oct	Air France

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 489€

Return flights