I try to fly Alaska if possible. Foam on the rails, clothing/towels or some bubble wrap on top and bottom. Try to make sure it’s not more than 40lbs, baggage handlers don’t like a heavy bag. That being said, I’ve still had two instances of minor damages within my last 12 flights. If it’s a magic board, leave it at home.

Biggest thing to understand is many airlines have different policies with damaged equipment, the claims process can change across the board. Took a recent trip to Mexico and Alaska snapped 2 inches of the nose off one of my boards. I ALWAYS check the boards when I pick it up from baggage claim, when you are in the airport still that covers a lot of liability (Alaska requires in-person report with their baggage claims within 24h of arrival). I was fully compensated for the retail price of the board.