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

Return flights

25 Apr - 10 May	LATAM Airlines Group
06 Apr - 22 Apr	Air Canada
20 Apr - 08 May	Air Canada
16 Apr - 06 May	Air Canada
16 Apr - 01 May	Air Canada
02 Apr - 19 Apr	Air Canada
23 Apr - 08 May	Air Canada
04 Apr - 17 Apr	Air Canada
01 Apr - 15 Apr	Air Canada
22 Apr - 07 May	Avianca
29 Apr - 19 May	Air Canada
13 Apr - 26 Apr	Avianca
28 Apr - 12 May	Avianca
19 Apr - 05 May	Avianca
10 Apr - 24 Apr	Avianca
18 Apr - 02 May	Avianca
15 Apr - 25 Apr	Avianca
09 Apr - 25 Apr	Avianca
14 Apr - 25 Apr	Avianca
14 Apr - 24 Apr	Avianca

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 $1010

Return flights