It appears that there are currently no direct flights between any northern Brazilian cities and the US.
Azul has Belem to FLL on their route map, but it's not actually showing up in their search.
https://www.voeazul.com.br/en/about-azul/route-map

I flew Manaus to MIA back in November '19 on AA. I guess that post-covid, there's not enough demand for a direct flight between any cities? Anybody know if any airline has any plans to restore service between Manaus, Belem or even Fortaleza or Recife (even though that's further away) in the near future?

I'm basically looking for a direct flight from the US to Brazilian cities with the shortest flight time (the Manaus - Miami flight was around 5.5 hours).