How can I make sure my dog doesn't poop or pee during a flight? You can't; your dog needs to poop and pee, just like you do. As Carol said, put lots of pee pads on the bottom of the crate so the dog can poop and pee as needed.
What happens if your dog has to go to the bathroom on a plane?
Line the carrier with an absorbent “puppy potty pad” in case your dog needs to urinate or defecate during travel.
How do I stop my dog from pooping on a plane?
Why won’t my dog pee or poop while traveling?
DON'T panic if your pup won't poop. Changes in routine, mild anxiety, or lack of exercise can all affect your pet's elimination habits. DO take your dog with you whenever you leave the car.
How long can dog hold pee and poop?
Adult dogs that are one year or older should be able to hold their pee in for up to 6-8 hours. However, 8 hours is a bit of a stretch, and ideally, you should not expect your dog to hold their urine for longer than 6 hours.