My puppy flew to me when she was 8.5 weeks old and she was fine. The breeder and I worried the whole time mind you
We then flew again twice when she was a year old and again there was no issue.
Just be ready with food, water, fresh blankets, and baby wet wipes to clean your puppy if she has an accident on route.
Call the airline before you make the reservation and again after the reservation is made. Each airline and country has various requirements such as vet certificate to consider. If shipping from another country you may also need to pay duty before you can pickup your puppy from the airline shipper.
Here is a thread that discussed flying dogs if you are interested: Flying with your Doberman