Even though I am an EU-citizen, I can’t fly directly from the US to Cuba for just tourism – I have learned from other FF-forums and from a private message from American Airlines.

BUT: What about the other direction? If I travel legally to Cuba from a third country?

It seems straight forward to book online a ticket with a US carrier o/w from Cuba to a US city.

Could I get into trouble with a) Cuban authorities at departure? b) with the US airline? and/or c) with US immigration?