General Airline Pet Policies and Entry Rules
Most major carriers classify pets as either carry-on animals or checked cargo. United Airlines, Delta Air Lines, American Airlines, Alaska Airlines, and Southwest Airlines publish current pet policies on their official sites, with United and Alaska often cited as the most pet-friendly for in-cabin travel Forbes. In-cabin pets must stay in an approved soft carrier that fits under the seat, typically limited to one pet per passenger with a combined weight limit of 20 to 25 pounds including the carrier. Checked pets travel in the pressurized and temperature-controlled cargo hold, and many airlines restrict certain breeds, especially snub-nosed dogs and cats, due to respiratory risks.
Documentation requirements usually include a current health certificate issued within 10 days of travel and proof of up-to-date vaccinations, particularly rabies. Some countries, such as the United Kingdom, Japan, Australia, and New Zealand, require additional import permits, microchip identification, and quarantine periods that can last from several days to months. Airlines may also require advance reservations for pets because space is limited, and fees range from 95 to 200 USD per pet for in-cabin travel and 200 to 500 USD or more for checked cargo, depending on the carrier and route.
In-Cabin and Cargo Requirements by Carrier
In-cabin pet policies vary by airline and fare type. Alaska Airlines allows cats and small dogs in the cabin on most domestic and select international flights, with a pet fee of around 100 USD each way. JetBlue, Delta, and United also permit in-cabin pets on most domestic routes, with fees typically between 95 and 125 USD per flight segment, while Southwest Airlines allows only cats and dogs in the cabin for a fee of 95 USD per pet SEC. Cargo policies are stricter for large dogs and certain breeds; for example, Delta and American restrict snub-nosed breeds from cargo travel during hot weather months, and United Express Cargo operates a dedicated PetSafe program with temperature-controlled holding areas.
Crate and Carrier Specifications
Airlines generally require hard-sided or soft-sided crates that meet International Air Transport Association standards, with ventilation on at least three sides, a secure locking mechanism, and absorbent bedding. The crate must allow the pet to stand, turn around, and lie down naturally. For checked pets, labels indicating live animal status and arrows indicating upright position are mandatory, and some carriers require a second external label with the owner contact details and destination address.
Fees, Booking Procedures, and Travel Preparation
Pet fees are usually charged per segment or per direction and are non-refundable. Most airlines require pet reservations to be made in advance, either during booking or by calling customer service, because in-cabin pet spots are limited per flight. Some carriers, such as United, allow pre-booking of cargo pet space through its PetSafe desk, and customers should arrive at the airport early to complete check-in and present health documentation at the airline counter.
Preparation steps include familiarizing the pet with the carrier, labeling all documents, and confirming the destination country's import rules through the relevant embassy or agriculture department website. Airlines update policies seasonally, and changes to temperature embargoes, breed restrictions, and fee structures can occur with little notice, so checking the airline's official pet policy page before booking is essential Forbes. Using a vet-approved travel crate, labeling the carrier with food and water instructions, and attaching a recent photo of the pet can help reduce delays at check-in and during customs inspections.