I was playing and then I finally got enough money for a new plane, so I bought the white plane on the British side, after that I played a game and when I was playing I had 2,340 left, the game ended and I played another game and I had - money and I hadn't bought anything. Here's a screenshot.

Nice

Ryan its been a good while since I bought a plane but I think the amount of money you have stays the same until you log out of the game.

Next time you play the difference will show