AirHint found the following cheapest return flights from Santiago (SCL) to Buenos Aires (AEP) in May 2026 (see full year).

Return flights

01 May - 06 May	JetSmart
26 May - 02 Jun	Sky Airline
14 May - 21 May	JetSmart
22 May - 01 Jun	JetSmart
01 May - 04 May	JetSmart
30 May - 08 Jun	JetSmart
04 May - 08 May	JetSmart
14 May - 17 May	JetSmart
15 May - 17 May	JetSmart
21 May - 25 May	JetSmart
08 May - 15 May	Sky Airline
26 May - 02 Jun	Sky Airline	direct
22 May - 26 May	JetSmart
21 May - 23 May	JetSmart
19 May - 25 Jun	JetSmart
19 May - 25 Jun	JetSmart	direct
26 May - 19 Jun	JetSmart	direct
21 May - 05 Jun	JetSmart
21 May - 01 Jun	JetSmart
19 May - 05 Jun	JetSmart	direct

Also check the deals for one-way flights from Santiago to Buenos Aires in May.

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 Buenos Aires in May from $145

Return flights