AirHint found the following cheapest return flights from Santiago (SCL) to Asuncion (ASU) in September 2025 (see full year).

Return flights

08 Sep - 11 Sep	JetSmart
10 Sep - 11 Sep	JetSmart
07 Sep - 11 Sep	JetSmart
04 Sep - 11 Sep	JetSmart
05 Sep - 11 Sep	JetSmart
04 Sep - 07 Sep	JetSmart
05 Sep - 07 Sep	JetSmart
30 Sep - 02 Oct	JetSmart
25 Sep - 02 Oct	JetSmart
26 Sep - 02 Oct	JetSmart
01 Sep - 11 Sep	JetSmart
02 Sep - 11 Sep	JetSmart
08 Sep - 16 Sep	JetSmart
30 Sep - 17 Oct	JetSmart
30 Sep - 18 Oct	JetSmart
16 Sep - 02 Oct	JetSmart
21 Sep - 02 Oct	JetSmart
29 Sep - 02 Oct	JetSmart
30 Sep - 19 Oct	JetSmart
17 Sep - 02 Oct	JetSmart

Also check the deals for one-way flights from Santiago to Asuncion 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 Santiago to Asuncion in September from 194€

Return flights