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

Return flights

30 Oct - 12 Nov	Delta
25 Oct - 07 Nov	Delta
31 Oct - 07 Nov	Delta
31 Oct - 21 Nov	Delta
01 Oct - 19 Oct	LATAM Airlines Group
01 Oct - 17 Oct	LATAM Airlines Group
01 Oct - 08 Oct	LATAM Airlines Group
02 Oct - 18 Oct	TAP
07 Oct - 19 Oct	LATAM Airlines Group
24 Oct - 01 Nov	LATAM Airlines Group
24 Oct - 07 Nov	LATAM Airlines Group
01 Oct - 14 Oct	easyJet
05 Oct - 19 Oct	TAAG Angola Airlines
03 Oct - 19 Oct	TAP
04 Oct - 14 Oct	LATAM Airlines Group
03 Oct - 17 Oct	SWISS
22 Oct - 18 Nov	Iberia

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 833€

Return flights