Compliance with applicable laws by both sides is mandatory. Compare animal transport policies among airlines. Each has its own guidelines. Some will allow small animals in the passenger cabin, provided their carriers fit under the seat. Fees vary according to airline and whether the pet is traveling in the cabin or as cargo.
Some carriers charge a special fee or excess baggage charge.
If your pet is traveling as cargo, it may be possible to reserve space on a specific flight by paying extra for priority or special delivery service. Air travel can involve delays, exposing animals to temperature-related hazards. At this time of year, for example, airlines may refuse cargo transport of animals due to extreme cold. Great Britain, for example, requires a six-month quarantine period before you can reclaim your pet. A knowledgeable travel agency or the appropriate embassy can tell you applicable international laws.