I'm the traveler that was asking about Norwegian Air a few weeks ago :-). I decided to look at other airlines and have been watching fares on round-trip flights from SFO-Rome and back. I'm looking at a return flight on Delta that departs Rome (FCO) and stops at JFK for about 2.5 hours before our final destination (SFO). Would we be going through passport control in JFK or SFO? My underlying question is whether this layover time is cutting it too close if we would need to get our luggage and go through security and passport control at JFK. I realize that if the first flight is late and we miss the connecting flight to SFO, Delta would need to try to get us on another flight to SFO, but just trying to assess the likelihood of this (with a tired family/kids in tow).
Thank you for any insight!