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

Return flights

10 Sep - 18 Sep	JetSmart
10 Sep - 16 Sep	JetSmart
05 Sep - 18 Sep	JetSmart
05 Sep - 16 Sep	JetSmart
02 Sep - 18 Sep	JetSmart
02 Sep - 16 Sep	JetSmart
28 Sep - 06 Oct	JetSmart
28 Sep - 09 Oct	JetSmart
28 Sep - 10 Oct	JetSmart
23 Sep - 06 Oct	JetSmart
23 Sep - 09 Oct	JetSmart
23 Sep - 10 Oct	JetSmart
24 Sep - 06 Oct	JetSmart
24 Sep - 09 Oct	JetSmart
24 Sep - 10 Oct	JetSmart
28 Sep - 03 Oct	JetSmart
10 Sep - 30 Sep	JetSmart
28 Sep - 30 Sep	JetSmart
11 Sep - 19 Sep	JetSmart
04 Sep - 16 Sep	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 193€

Return flights