Travel restrictions to Cuba
 

Question re the travel restriction to Cuba on OW tix with AA sectors - does this apply to AA metal, AA codes, or both? EG, could I travel on an LONE4 from HAV-MIA on LA, then MIA-LAX on QF codeshare with AA? Ta.

No. From the rules:

This is one time that a codeshare may actually be useful! AA is prohibited by the US govt from accepting any IATA issued ticket that has any segment for Cuba ... but QF is not, and AA acting as QF's agent is allowed (I think). Thus you cannot have AA flight number MIA-LAX but can have QF flight number MIA-LAX (but note that you can only do this, even on a OWE ticket, if you are flying out of LAX on QF metal as the next segment -- so it isn't much of a loophole!). Pretty sure QF will not sell you any of the US codeshares except as continuation of a trans-pacific QF flight (they probably lose money on MIA-LAX).

Seems pretty hard to coordinate all this in.

Cuba Access
 

If you want to go to Cuba, might be best to fly to places such as Cancun, Jamaica or even Canada. Then purchase separate ticket for Havana travel. That's what Miami "locals" have done for years to discretely circumvent the law.

Just dont transit in Canada if you happen to do this -- exit customs after arriving from Cuba. Otherwise a transit Cuba-US will catch the attention of the INS and customs service and you will have a long and extensive inspection (or so I've read on the web). The US restrictions against cuba have recently become high profile and tightened quite a bit, so judge your actions accordingly.