Short answer
Each airline sets its own process. Expect to need a recent ESA letter, advance notice, and often the airline's own form. Check with the airline before booking. If an airline form needs something from the professional who signed your letter, email [email protected] and we'll see what we can do.
What to expect
U.S. airlines may treat an ESA as a pet. For an airline that still accepts ESAs, each airline sets its own process. Expect to need:
- a recent ESA letter;
- advance notice before your flight;
- often, the airline's own form.
Check before you book
Check the airline's current policy before you book, and before you buy a travel letter: a travel letter is non-refundable once signed, including if an airline doesn't accept it.
If an airline form needs the professional
If an airline form needs something from the professional who signed your letter, email [email protected] and we'll see what we can do.
General information, not legal advice. Last reviewed: November 13, 2026.
