AirHint found the following cheapest return flights from Sao Paulo (GRU) to Buenos Aires (AEP) in March 2026 (see full year).

Return flights

22 Mar - 28 Mar	Flybondi	direct
28 Mar - 31 Mar	Flybondi	direct
26 Mar - 29 Mar	Flybondi	direct
15 Mar - 23 Mar	Flybondi	direct
28 Mar - 06 Apr	Flybondi	direct
06 Mar - 13 Mar	Flybondi	direct
07 Mar - 14 Mar	Flybondi	direct
26 Mar - 31 Mar	Flybondi	direct
26 Mar - 30 Mar	Flybondi	direct
16 Mar - 23 Mar	Flybondi	direct
23 Mar - 30 Mar	Flybondi	direct
26 Mar - 07 Apr	Flybondi	direct
25 Mar - 06 Apr	GOL Linhas Aéreas	direct

Also check the deals for one-way flights from Sao Paulo to Buenos Aires in March.

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 Sao Paulo to Buenos Aires in March from 149€

Return flights