Early last year sanctions began to be lifted between the US and Cuba, following the embargo that was in place for decades. This was huge news for those looking to travel to Cuba, since it created more circumstances under which US tourists could visit (and those travel restrictions have been eased even further since then).
What is far from instant, however, is actually restoring commercial flights between the two countries. Air treaties between countries are complicated matters even under normal circumstances, let alone a situation like this, where they’re making up for decades of non-diplomacy.
As I wrote about in February, the US and Cuba signed an agreement to restore commercial service between the two countries. Under this agreement, US airlines could start bidding on routes between the US and Cuba, for up to 110 flights per day.
Only 20 of those daily frequencies could be commercial flights to Havana, though, while the other frequencies would have to be to other cities in Cuba (where there’s presumably a lot less demand). US airlines had a 15 day window where they could request flights to Cuba, so at the end of that we learned of all the flights US carriers wanted to operate to Cuba, which far exceeded the number of available frequencies.