The air in the plane is extremely dry and it removes any moisture in your skin and hair. Dry hair is more prone to static electricity, which is a result of electrons in the hair moving from one atom to another, and when this happens, your hair gets electronically charged.
So, if you want to look your best right after you get off the plane, here’s how you can:
The day before your flight, shampoo and condition your hair really well. Leave the conditioner on for at least 5 minutes and rinse it off with cold water (read this article for more on the cold rinse). Dry your hair with medium heat, or let it dry naturally, and then use a bit serum or oil on the ends.