AirHint found the following cheapest return flights from Cartagena (CTG) to Buenos Aires (AEP) in September 2025 (see full year).

Return flights

22 Sep - 28 Sep	JetSmart
08 Sep - 28 Sep	JetSmart
14 Sep - 28 Sep	JetSmart
21 Sep - 28 Sep	JetSmart
07 Sep - 11 Sep	JetSmart
08 Sep - 11 Sep	JetSmart
26 Sep - 28 Sep	JetSmart
15 Sep - 28 Sep	JetSmart
07 Sep - 18 Sep	JetSmart
08 Sep - 18 Sep	JetSmart
22 Sep - 01 Oct	JetSmart
22 Sep - 08 Oct	JetSmart
14 Sep - 01 Oct	JetSmart
22 Sep - 02 Oct	JetSmart
14 Sep - 02 Oct	JetSmart
21 Sep - 01 Oct	JetSmart
21 Sep - 08 Oct	JetSmart
26 Sep - 01 Oct	JetSmart
26 Sep - 08 Oct	JetSmart
22 Sep - 09 Oct	JetSmart

Also check the deals for one-way flights from Cartagena to Buenos Aires 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 Cartagena to Buenos Aires in September from 410€

Return flights