Let’s talk about air circulation
If you have traveled by plane, you know the feeling you get being in the air for so long, especially if you are claustrophobic. You feel trapped, and unlike with cars, you can’t open the window on an airplane.
To help you get through the flight, keep the air conditioning on. Leaving your vent on will keeping the air circulating and stay fresh. This also helps keep the germs on the plane away; circulating the air prevents you from getting sick from the other passengers.