יו״ט שני for a בן א״י, assuming it ends in BOS before you land there.
(Though if that’s the answer I’d beg to differ on the usage of no one. You and I wouldn’t, but I think some would.)
ETA: Seeing your other post now, I assume you intended for the answer here to be something to do with צום גדליה…
RSZ held that the airport has the din of an ir without a minhag, and as such, you can do melacha in the airport. I didn't know anyone argues on this. The flights I listed ARE on the second day of Sukkos, the same day. If you land in the airport at 5:30AM, this is the equivalent of a 15 hour layover because you can't leave the airport until tseis. But because of RSZ, there is no problem transferring flights if you don't leave the airport.
When I said no one I meant fun unzere. Maybe I should have been more specific, but it was posted in the halacha thread...
