We're planning to go CLE/CAK-FLL Sep 1-6 on UA. I'm thinking about nesting a jaunt to NAS on UP Sep 2-6. On the return, how many hours should I allow to connect from the NAS-FLL UP flight and the FLL-XXX-CLE UA flight? Does US Immigration and Customs take place at NAS or FLL? Any other qualms I should have about this plan?
The MCT appears to be 1:30, as it seems there's a change of terminal involved. On separate tickets, I'd pad that for safety.
There is a preclearance facility at NAS, so you should go through customs & immigration there, but I'd check with the UP forum to make sure there's not a caveat somewhere.