Factual error: The title of the scene says "Idlewild Airport 1963" but they are leaning against the trunk of a 1965 Chevrolet.
Continuity mistake: At the beginning of the movie they pull to the side of the road and stab and shoot the not yet dead man in the trunk. In this scene Jimmy shoots him 4 times. Later, when they get to this scene in the story and show it again in slow mo, Jimmy fires the gun 5 times. (01:00:34)
Continuity mistake: After Henry gives Paulie a share of the money he took from the air port, Paulie tells him to say that he got the rest of the money playing Craps in Vegas. Paulie's left hand is around Henry's back with his hand flat out on his shoulder. When it cuts to a close up as Paulie is playfully slapping his cheek with his other hand, his left hand is now suddenly balled up in a different position on Henry's shoulder. (00:35:30)