For several years animal rights activists have targeted the airlines which transport animals for medical, veterinary and scientific research. They have had a lot of success, with few companies willing to transport animals. In the words of Nature:

The pressures on primate researchers have taken many forms. In the United States, for example, commercial airlines have effectively ceased all primate shipments by air within the country, making it difficult for researchers to transport animals. Many airlines in Europe have taken similar steps, but Air France continues to provide service.

In March, China Southern Airlines announced it would cease transporting primates. This leaves Air France as one of the few international airlines that continue to transport animals.