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

Return flights

31 Oct - 08 Nov	Delta
14 Oct - 04 Nov	easyJet
29 Oct - 07 Nov	Delta
25 Oct - 07 Nov	Delta
31 Oct - 07 Nov	Delta
30 Oct - 03 Nov	Delta
14 Oct - 24 Oct	easyJet
06 Oct - 26 Oct	LATAM Airlines Group
07 Oct - 14 Oct	LATAM Airlines Group
14 Oct - 21 Oct	Iberia
01 Oct - 19 Oct	Iberia
05 Oct - 28 Oct	Iberia
10 Oct - 15 Nov	Iberia
18 Oct - 22 Oct	TAAG Angola Airlines
21 Oct - 28 Oct	LATAM Airlines Group
22 Oct - 29 Oct	LATAM Airlines Group
01 Oct - 08 Oct	Iberia
18 Oct - 08 Nov	LATAM Airlines Group
24 Oct - 01 Nov	LATAM Airlines Group

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

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 Lisbon to Buenos Aires in October from $988

Return flights