Aerolineas Argentinas restarted regular domestic flights (as opposed to "special" flights) on 22Oct20 with about a half dozen roundtrip flights from Buenos Aires Ezeiza (EZE) to interior points.
Those flights have since increased to about 12-15 daily roundtrips, including daily early morning departures to Mendoza (MDZ) and Cordoba (COR).
The rest of the flights are distributed to several destinations around Argentina, with many important cities receiving flights on at least an every-other-day basis, including Bariloche (BRC), Corrientes (CNQ), Jujuy (JUJ), Neuquen (NQN), Puerto Iguazu (IGR), Rio Gallegos (RGL), Salta (SLA), Tucuman (TUC) and Ushuaia (USH).
Aircraft used include both Aerolineas Argentinas 737-800's and Austral E-190's.
Internationally, American Airlines has been flying a 1x/daily Buenos Aires Ezeiza (EZE) - Miami (MIA) rotation with Aerolineas Argentinas flying the route several times per week too. Both of the latter appear to be "regular" flights and not "special" flights.
Air France, British Airways, Iberia, KLM, Lufthansa (including pure freighters), and Turkish have been flying approx. every-other-day with even Ethiopian and United flying occasionally too. It is not clear if these are "regular" or "special flights.
LATAM Brazil, LATAM Chile, LATAM Peru have also been flying every day with some of them reportedly being freight flights operated with passenger aircraft.
Interestingly, through most of the last 6-7 months, Qatar Airways has been flying and EZE - Quito (UIO) - Doha (DOH) freighter flight almost every day with a 777-200F.