You try to avoid motion sickness by upgrading to first class
While a last-minute upgrade might seem like a good idea—especially if you often find yourself falling ill on flights—the seats in the middle of the plane are best for those with motion sickness. “A plane is like a seesaw. If you’re in the middle, you don’t move as much,” Patrick Smith, pilot, and author of Cockpit Confidential told Reader’s Digest.
More worried about safety than nausea? Here’s How To Survive a Plane Crash, According to Science.