[header] How to prepare a dog for air travel [title] Check to make sure your dog should be flying. [step] Not all dogs are considered safe to fly. In general, airlines do not recommend that puppies under 8 weeks, elderly dogs, or sick dogs fly either in-cabin or as cargo. 
Short-nosed dogs, such as bulldogs and pugs, are not good candidates for being checked as they run the risk of overheating. Do not risk your dog's health and safety by having it fly when it is not fit to do so.