I respect the commitment to finishing Uncharted.
But realistically… no. The seat outlets on most planes won’t handle 250w. They’re usually capped somewhere around 75 to maybe 150 watts max, and even then they can cut out if you pull too much. A PS5 Pro would almost definitely trip it.
Best case, it flickers on and shuts off. Worst case, the outlet just refuses to power it at all.
Also worth remembering those outlets aren’t the most stable power sources. Consoles don’t love inconsistent power.
If you really want to game, something like a Steam Deck, Switch, or gaming laptop is way more flight friendly.
As funny as it would be to boot up a PS5 at 35,000 feet, the plane probably isn’t going to support that kind of draw.