Southwest Airlines Pet Travel Policy
WN • United States • None
Complete guide to flying with your pet on Southwest Airlines. Cabin and cargo rules, crate requirements, breed restrictions, and required documents. Last verified: 2026.
Cabin Travel
Cargo / Hold Travel
Cargo pet transport information not available or restricted.
Crate Requirements (IATA Compliant)
⚠️ Common Rejection Reasons
- • Carrier size
- • Vaccination documentation
Don't Risk Rejection
Get your crate checked by AI before you get to the airport. Know in minutes if you'll pass Southwest Airlines's inspection.
Documents Required
- Health certificate recommended for travel
Official Policy
Always verify with Southwest Airlines directly before travel.
Southwest Airlines Pet PolicyLast verified: 2026
Flying with Your Pet on Southwest Airlines
Southwest Airlines (WN) is an American carrier and member of the None alliance.The airline allows small pets to travel in the cabin under your seat, as well as offering cargo transport for larger animals.
Understanding Southwest Airlines's Pet Policy
Southwest Airlines's pet travel policy follows IATA (International Air Transport Association) Live Animals Regulations, with some airline-specific additions. All crates must be IATA-compliant with rigid construction, adequate ventilation, secure metal door, and proper labeling. Pets must have current health certificates and rabies vaccinations.
How to Avoid Rejection at Check-In
The most common reasons for pet crate rejection at Southwest Airlines check-in include: incorrect crate sizing, plastic clips instead of metal bolts, insufficient ventilation, missing or expired health certificates, and attempting to fly restricted breeds in cargo. Using our AI pre-check service can identify these issues before you arrive at the airport, giving you time to make corrections.