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

Return flights

14 Sep - 09 Oct	Lufthansa
14 Sep - 19 Sep	Lufthansa
03 Sep - 17 Sep	Lufthansa
11 Sep - 15 Sep	Lufthansa
09 Sep - 19 Sep	Lufthansa
18 Sep - 06 Oct	Lufthansa
24 Sep - 14 Oct	Lufthansa
05 Sep - 19 Sep	Lufthansa
07 Sep - 19 Sep	Lufthansa
15 Sep - 29 Sep	Lufthansa
20 Sep - 30 Sep	Lufthansa
08 Sep - 06 Oct	Lufthansa
06 Sep - 13 Sep	Oman Air
02 Sep - 12 Sep	Oman Air
24 Sep - 05 Oct	Lufthansa
18 Sep - 05 Oct	Lufthansa
17 Sep - 05 Oct	Lufthansa
24 Sep - 12 Oct	Lufthansa
27 Sep - 12 Oct	Lufthansa
30 Sep - 05 Oct	Lufthansa

Also check the deals for one-way flights from Amsterdam 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 Amsterdam to Singapore in September from $674

Return flights