According to Nolan, the big advantage of having your own plane is that you can modify the thing. Since all other NFL teams charter a plane from a major airline, they're not allowed to make any modifications. On the other hand, the Patriots are now able to make the inside of the plane as comfortable as possible.
"The players historically have sat on coach seats on a domestic aircraft, so what we did with these seats, was first, we got the widest and largest seat that you can put on this plane," Nolan said. "Most importantly, from a player perspective, we've added five-inches of legroom beyond what a typical first-class seat has."
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The big advantage for the Patriots here is that they don't have to deal with chartering a plane anymore. Trying to get a charter has turned into a nightmare for NFL teams. Going into the 2017 season, at
least eight teams were dumped by the commercial airline that they had been chartering with, which means they were all stuck looking for a last minute replacement.
https://www.cbssports.com/nfl/news/...e-of-their-new-team-plane-for-the-first-time/