Flying with Kattens

So I am flying with my cats on Monday, they are both going in one 'kennel' that is big enough for the two of them, they are flying 'cargo' or whatever you call it.

They have done it before, when they were younger, going for a visit and couldn't find anyone to sit, so had to take them with.

My question is should i go find some 'homopathetic' medicine to help calm their nerves... (bought something at a pet store on their last trip that we gave them, no idea if it helped or not, or if was more for 'our minds benefit' lol) AND, when should they last be fed?

I usually feed them twice once in the morning and once in the evening a mix of wet and dry food.

Thanks for the move had no idea where this should go lol....

Thanks for the help

You can give them Rescue Remedy if you like to help calm.

Mine were all flown to me from another state, they were given dinner as normal the night before and no meal the day of flying. Then I fed them once they arrived to me.

Well, I had my dog flown from Indianapolis to Mexico City to live with me.
I didn't do it myself, but as far as I know my dad fed her the night before and did not feed her before the flight.
As far as the relaxers I cannot help you. We didn't use them with my dog.