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

Return flights

27 Apr - 17 May	GOL Linhas Aéreas
12 Apr - 28 Apr	GOL Linhas Aéreas
24 Apr - 16 May	LATAM Airlines Group
13 Apr - 23 Apr	Avianca
13 Apr - 11 May	Avianca
22 Apr - 12 May	Avianca
28 Apr - 12 May	Avianca
18 Apr - 28 Apr	Avianca
19 Apr - 14 May	Avianca
22 Apr - 09 May	Avianca
13 Apr - 30 Apr	Avianca
28 Apr - 14 May	Avianca
18 Apr - 06 May	Avianca
24 Apr - 05 May	Avianca
07 Apr - 14 Apr	GOL Linhas Aéreas
03 Apr - 20 Apr	GOL Linhas Aéreas
06 Apr - 18 Apr	GOL Linhas Aéreas
08 Apr - 18 Apr	Avianca
11 Apr - 24 Apr	GOL Linhas Aéreas
07 Apr - 25 Apr	GOL Linhas Aéreas

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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Cheapest return flights from Buenos Aires to Lisbon in April from $951

Return flights