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

Return flights

19 Sep - 21 Sep	Air Serbia
21 Sep - 05 Oct	Air Serbia
21 Sep - 25 Sep	Air Serbia
29 Sep - 03 Oct	Air Serbia
19 Sep - 26 Sep	Air Serbia
25 Sep - 30 Sep	Air Serbia
25 Sep - 28 Sep	Air Serbia
24 Sep - 29 Sep	KLM
18 Sep - 23 Sep	Transavia France
23 Sep - 05 Oct	Air Serbia
18 Sep - 21 Sep	Air Serbia
24 Sep - 28 Sep	KLM
28 Sep - 30 Sep	Wizz Air
30 Sep - 04 Oct	Air Serbia
28 Sep - 01 Oct	Air Serbia
23 Sep - 05 Oct	transavia	direct
21 Sep - 05 Oct	transavia	direct
27 Sep - 01 Oct	Air Serbia

Also check the deals for one-way flights from Ljubljana to Amsterdam 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 Ljubljana to Amsterdam in September from 198€

Return flights