In Cabin/Carry-On Pet Fee: $125 one-way (flights within or between the U.S., Canada, Caribbean, Mexico, Central America)
Maximum Weight Allowed: No weight restriction.
Cargo Area/Checked Baggage Pet Fee: The cost to ship your pet depends on the combined weight of your pet plus the weight of your kennel. For more information, go to the PetSafe section of the United Airlines website.
Carrier Guidelines: Pets traveling in cabin/carry-on must be tranported in either a hard-sided or soft-sided pet travel carrier. Pet must be able to stand up, turn around and lie down comfortably in the carrier. Pet carriers must be ventilated on at least two sides, plus the door. United Airlines may not be able to accommodate pets on some aircraft or routes, or in many United First and United Business cabins. To be brought on board, kennels may not exceed any of the following dimensions: hard-sided - 17" L x 12" W x 8" H; soft-sided - 17" L x 10" W x 10" H.
Pets traveling in the cargo area as checked baggage may be transported in a pet travel kennel where maximum height cannot exceed 34". The #400 series is the largest crate size accepted on any United Express aircraft that are able to accommodate pet crates. The pet travel kennel's construction must meet USDA regulation requirements (no wheels; no wire kennels; no collapsible kennels); must have leakproof bottom and absorbent material. The kennel must be sturdy allow your pet to stand up, turn around and lie down comfortably.