Snub-nosed (brachycephalic)
Bulldogs, French Bulldogs, Pugs, Boxers, Boston Terriers, Shih Tzus, Pekingese, Cavalier King Charles. Widely embargoed from aircraft holds for breathing-risk reasons — some airlines year-round, most in summer. Cabin if small enough; otherwise sea or road.
Restricted & banned types
Pit bull-types, Tosa, Dogo Argentino, Fila Brasileiro, and in some countries Amstaffs, Staffies, Rottweilers and Akitas. Bans are morphology-based — pedigree paperwork and DNA results are your friends. Check the destination AND every transit country (Denmark bans transit).
Giant breeds
Great Danes, Mastiffs, Newfoundlands, Irish Wolfhounds. No cabin option anywhere; cargo priced by volumetric weight means the crate — not the dog — sets the bill. Some carriers cap crate sizes below what these dogs need. Get crate dimensions confirmed in writing before booking.
Cabin-sized companions
Chihuahuas, Dachshunds, Yorkies, small terriers and most dogs under ~6.5 kg travel like cats do: soft carrier under the seat, one booking call, minimal drama. Your only enemies are the per-flight pet quota and layover length.
Check your breed against your route
The Dog Travel Planner cross-references breed, weight and destination in one pass — including banned-breed hard stops and summer embargo timing. Individual breed travel guides are generated through the CMS as the site grows.