I had a 10 week old puppy shipped from a breeder in Vancouver, Washington, to Detroit (I’m in Cleveland and it was the closest direct flight).
My experience was not a good one - the cargo heater broke in the plane, and the puppy was rerouted. He went from Portland OR, through Atlanta and then Chicago, before finally arriving in Detroit 17 hours later than scheduled.
He is now 3 years old. We’ve been seeing a veterinary behaviorist for terrible separation anxiety and claustrophobia since he was 5 months old, and we probably should have started seeing her earlier. At age 3, he’s finally weaned off of medication and able to be left home alone… but OH MAN what a road we have traveled.
The dog is from an absolutely top notch breeder with many generations of stellar temperament behind him. He has 8 littermates, 6 of whom were flown to new homes, who have no issues whatsoever. Our behaviorist attributes his issues to the 20 hours he spent in cargo during a critical fear period.
The odds were low that something bad would happen on his flight.
But, having now dealt with the impact a bad flight in cargo can have on a puppy’s developing psyche, I would not do it again.
If I were to get another puppy from far away, I would absolutely fly out to pick them up and fly back with the puppy in cargo with me.
YMMV. 