Are there nonstop flights from Lisbon (LIS) to Buenos Aires (AEP)?

No. The fastest connection is via Fortaleza, about 12h 18m of total flying time.

What is the fastest connection from Lisbon (LIS) to Buenos Aires (AEP)?

via Fortaleza ≈ 12h 18m, via Curitiba ≈ 12h 19m, via Brasília ≈ 12h 19m (estimated flying time, excluding layovers).

Lisbon Humberto Delgado Airport (LIS) to Aeroparque Jorge Newbery (AEP)・9,603 km

No nonstop flights. The fastest connection is via Fortaleza (FOR), about 12h 18m of flying time (layover not included).

None.

11 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.