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

Return flights

11 Sep - 25 Sep	Finnair
08 Sep - 18 Sep	Finnair
02 Sep - 16 Sep	Finnair
07 Sep - 24 Sep	Finnair
15 Sep - 26 Sep	Finnair
25 Sep - 09 Oct	Finnair
01 Sep - 24 Sep	Finnair
12 Sep - 03 Oct	AJet
22 Sep - 29 Sep	Finnair
10 Sep - 19 Sep	Finnair
01 Sep - 14 Sep	Finnair
08 Sep - 14 Sep	Finnair
23 Sep - 14 Oct	Finnair
22 Sep - 13 Oct	Finnair
16 Sep - 07 Oct	Finnair
17 Sep - 07 Oct	Finnair
15 Sep - 06 Oct	Finnair
25 Sep - 15 Oct	Finnair
18 Sep - 01 Oct	Finnair
22 Sep - 12 Oct	Finnair

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.

Book a cheap hotel in Singapore

Cheap car rent in Singapore

Cheapest return flights from Frankfurt to Singapore in September from 515€

Return flights