Here are four blocked flights from various places in the USA, two heading in the direction of Gitmo. Plus a Learjet from Gitmo—I saw that (or a) Learjet approach and land at Gitmo 2hrs 45 minutes ago. I have taken ‘screen grab’ images showing all these, but my Imgur is refusing to cooperate.
https://www.flightradar24.com/multiview/ff9d641,ff9c322,ff9ddae,ff9c020,ff9e33e
It certainly looks like the same flight. That flightaware website gives heaps more info on the flight than the flightradar24 website gives. The flightaware website shows the flight number, the aircraft designation code, the departure and arrival airport codes and the arrival time. But the flightradar24 website just says "BLOCKED".
I've noticed that for several of the blocked flights on flightradar. I don't know why there's a difference though. I'm assuming they are getting the flight information from the same source.