AirHint found the following cheapest return flights from Buenos Aires (AEP) to Lisbon (LIS) in April 2026 (see full year).

Return flights

21 Apr - 06 May	Avianca
03 Apr - 23 Apr	Avianca
03 Apr - 16 Apr	Avianca
04 Apr - 15 Apr	Avianca
19 Apr - 05 May	Avianca
20 Apr - 08 May	Avianca
07 Apr - 05 May	Avianca
16 Apr - 04 May	Avianca
04 Apr - 23 Apr	Avianca
22 Apr - 03 May	Avianca
28 Apr - 09 May	Avianca
23 Apr - 03 May	Avianca
24 Apr - 09 May	LATAM Airlines Group
13 Apr - 03 May	Avianca
08 Apr - 15 Apr	LATAM Airlines Group
02 Apr - 19 Apr	Avianca
12 Apr - 28 Apr	GOL Linhas Aéreas
06 Apr - 27 Apr	LATAM Airlines Group
12 Apr - 23 Apr	Aerolíneas Argentinas
08 Apr - 23 Apr	Aerolíneas Argentinas

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

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 Buenos Aires to Lisbon in April from 789€

Return flights