Airline Pet and PSD Policies Compared: Every Major US Carrier, 2026

Since ESAs became pets in airlines' eyes, the practical question is which carrier treats your animal best. This comparison covers the major US airlines' pet-in-cabin fees, carrier requirements, and PSD procedures as they stand in 2026.

Key Takeaways

• Pet-in-cabin fees cluster between $95 and $150 each way across major carriers
• Carrier size limits are the real constraint: under-seat dimensions vary by aircraft
• Pet spots per flight are capped; book the animal at the same time as your ticket
• PSDs fly free on all US carriers with the DOT attestation form submitted in advance
• Policies shift; confirm directly with the airline inside two weeks of travel

The Full Picture

The fee spread is narrower than the experience spread: carriers differ meaningfully in pets-per-cabin caps, connection handling, and how early the pet reservation must be made. Travelers with small animals fare best booking the pet spot the moment they book the seat, because caps of four to six animals per flight fill on popular routes.

For PSD handlers the 2026 process is genuinely standardized: one DOT form attesting to training and behavior, submitted through the airline's accessibility desk before travel, no fee, cabin access. Airlines may ask the two permitted questions and observe behavior, and a trained dog sails through. The form is where honesty matters; false attestations carry federal penalties.

The Practical Travel Kit

Structure trips so the animal-dependent segments fall inside covered housing, plan the transit days as logistics, and keep documentation current for the moments that matter. For disabling travel anxiety, the PSD path restores access an ESA cannot.