Written by Dr. Nicole Cummings
A recent study shows that it may be more dangerous for certain breeds of dogs to fly than others. Since May 2005, 122 dog deaths have been reported by US airlines, and 1/2 of these have been brachycephalic breeds (breeds with pushed in faces) such as English Bulldogs, Pugs, French Bulldogs, and American Staffordshire Terriers.
In a press release the Deptartment of Transportation advised owners of brachycephalic breeds to consult their veterinarians about the medical condition of their dogs before deciding to transport the animals as air cargo. (September 1, 2010 JAVMA vol 23)
Check out the article: https://airconsumer.ost.dot.gov/whatsnew.htm