You know it's actually not all that bad. Last time I flew (domestic of course), I was tripping on two hits of some excellent Czech needlepoint acid, drugs all in my toiletries bag… boarded the plane and surreptitiously took bumps of ketamine while listening to the latest Run The Jewels album, RTJ4. I flew with, all carry-on, nothing checked, 2 grams of DMT, 2 grams of K, .5g 3-HO-PCE, .5g 3-HO-PCP, a few capsule of 3-CL-CP, about a half ounce of cannabis, 3 g of shatter, 2 g of wax, 2.5 g of crystal meth, 1 g of α-PVP, 300 mg Epracetin, 20 capsules of Colour @ 30 mg/each, about 8 or so capsules of 2C-B-FLY and about 5 or 6 capsules of 5-MeO-MiPT. I didn't try to hide any of it beyond keeping it neatly contained in my toiletries bag and keeping powders in small, neat little wide-and-flat round glass containers that do not look unlike make-up containers, something x-ray technicians see a lot of every day without giving it two thoughts so long as it doesn't appear to be a weapon and you're not obviously muling a metric fuck ton of drugs.
But that's not the point. Tripping on an airplane is an adventure I highly recommended checking out with a backup, safety xanny bar in your pocket for a just-in-case you panic kinda thing. It's very comforting to have that on hand, I've found. Whether you take it is up to you to decide in the moment, but having the option is always nice and gives me more confidence to trip.