Some of the Central American airports should be rather grouped as shown:
N°1: David and Flores. The demand of passengers through these airports is likely focused for the VFR visiting friends and relatives traffic. They don't get scheduled flights from the United States by now. The business component is basically domestic.
N°2: Belize, Roatan and Liberia. They're essentially oriented for the leisure traffic, especially from the United States.
IMHO, perhaps even for Thanksgiving 2021 to Easter 2022 - with B738, DAV might have somewhat of a potential market (leisure, VFR) to woo CM to stop in DAV en-route to/from MIA Mondays and Fridays.
Also, there may be some (fresh) cargo demand.
However, if DAV do already meet (or might meet) FAA and Homeland Security requirements for non-stop flights to US airports, that's another thing.
Twice/thrice weekly AA MIA-DAV, be with Embraer RJ or E175, range-wise, might be doable, but if AA has eyes on DAV, it's a guess.