AirHint found the following cheapest return flights from Sydney (SYD) to Buenos Aires (AEP) in April 2026 (see full year).

Return flights

20 Apr - 08 May	LATAM Airlines Group
06 Apr - 05 May	LATAM Airlines Group
05 Apr - 04 May	LATAM Airlines Group
05 Apr - 05 May	LATAM Airlines Group
01 Apr - 29 Apr	LATAM Airlines Group
06 Apr - 25 Apr	LATAM Airlines Group
05 Apr - 14 Apr	LATAM Airlines Group
13 Apr - 26 Apr	Qantas

Also check the deals for one-way flights from Sydney to Buenos Aires in April.

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 Sydney to Buenos Aires in April from 1055€

Return flights