American Airlines PPS What is P.P.S. ? PPS "priority" service, (not cargo), is the preferred method of delivering live animals. There are less expensive methods to transport live animals available elsewhere such as “cargo“. We do not recommend cargo when shipping small animals mainly because of the length of the flights. Cargo flights include a 3 ½ hour minimum layover. Long flight times can cause undue stress to your pet, especially in adverse weather conditions. With AA PPS, your pet will travel in a climate controlled, pressurized environment on the most direct flight available. Our longest flight plans average 5 to 6 hours with a back up flight usually available in case of delays. C0ST $250 TO MOST LOCATIONS. Canada is a bit more expensive.