There's no way that wind damaged your oil pan. The most common reason for oil pan damage is high centering the car and banging it on something. If it's just leaking slightly and you don't think you've hit anything you could just need a new gasket.
If your car is fairly common is you should be able to find a used oil pan for next to nothing from a wrecking yard or you can usually buy a new one for under $50, you'll need a new gasket for it too and depending on whether it's a paper, cork, or rubber gasket it can be another $10-30
"I'd marry skiing, but it's playing hard to get"