@yomimono I am also moving Transatlantic with a cat. It is worth noting that you should NOT drug your cats if they don't fly with you in the cabin. If they are in the cargo hold of the plane, they can freeze if they are on relaxing drugs.
If you reach out to your airline AND airport, you can see if it is possible to fly with the cats in the cabin with you. If you fly into the UK, none of the airports will allow cats in the cabin, and your best bet would be to fly into EU and take a ferry.
It’s an adorable little void cat!