Cheapest return flights from Lisbon to Buenos Aires in September from $992

Best time to book flights for Lisbon (LIS) to Buenos Aires (AEP) flights at AirHint

AirHint found the following cheapest return flights from Lisbon (LIS) to Buenos Aires (AEP) in September 2025 (see full year).

Return flights

17 Sep - 29 Sep LATAM Airlines Group
01 Sep - 30 Sep Iberia
04 Sep - 28 Sep Iberia
20 Sep - 30 Sep LATAM Airlines Group
23 Sep - 01 Oct LATAM Airlines Group
15 Sep - 01 Oct LATAM Airlines Group
15 Sep - 04 Oct Ryanair
07 Sep - 21 Sep LATAM Airlines Group
13 Sep - 20 Sep Ryanair
01 Sep - 15 Sep Ryanair
09 Sep - 15 Sep easyJet
28 Sep - 04 Oct LATAM Airlines Group
12 Sep - 18 Sep LATAM Airlines Group

Also check the deals for one-way flights from Lisbon to Buenos Aires in September.

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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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