Sure but they never *banned* anything. There are still domestic flights and commercial int'l flights to the US/EU. Those that can fly and need to do. Airlines reduced capacity according to the rules/restrictions in place. Instead in Argentina (there are still flights) you have an opaque approval process where airlines have to request authorization for every single special flight in July, August... -- corruption conditions 101. Logic? None.
I have said this many times before. Unlike Australia and NZ, Argentina cannot eradicate the virus it can only suppress it and follow the European example -- Germany's best in this case. Flights in Europea have been on for several months now. Conditions change every day so restrictions are examined daily. For instance Austria allowed all flights within the EU then they banned some EU countries for 2 weeks and eventually allowed the flights back on but asked for a negative PCR test before travel. You see the virus will be around for a year or so, imposing an inflexible illogical one-size fits all bans is counterproductive. I have been a proponent of allowing limited travel with a negative PCR for a long time as it's as good at limiting (not avoiding) bringing in covid-19 as the 14 day quarantine policy currently in place. In Argentina you are NOT tested when you leave quarantine (which you do in your own home) after 14 days and a certain number of people would still be contagious and could spread it. Not to mention many people live with other family members and it's highly doubtful the correct protocols will be observed, family members strictly isolating in their room for 2 weeks, not visiting common spaces etc. In AUS/NZ with their irradiation policy -- you are isolated in a hotel and guarded 24/7 and tested before they let you leave quarantine.