After 30 min of flying, I get dry, bloodshot eyes. Don't wear contact lenses on flight. I use refresh dry eye drops but the redness stays. Any ideas?

Dry air. Most airline cabins are pressurized to feel as if they're about 8000 feet in altitude. As such, the air is very, very dry. Keep using your drops, and consider closing your eyes (maybe using a sleep mask) and sleeping while you listen to some music. There is a moistening ointment, I believe, which might last longer than the drops while you're flying.