DOT Service Dog Travel Form
Airlines may deny transport to a service dog if the airline requires completed DOT service animal forms and the service animal user does not provide the airline this form.
Onboard the aircraft
Your service animal must be permitted to accompany you in the space under the seat in front of you.
Certain small service animals may be permitted to sit on your lap, if it can be done so safely.
Your service animal cannot block a space that must remain unobstructed for safety reasons (ex. an aisle or access to an emergency exit).
An airline is not required to upgrade you to a different class of service to accommodate your service animal.
Airlines cannot refuse to allow your service animal onboard because it makes other passengers or flight crew uncomfortable.
Your service animal must behave properly. An animal that engages in disruptive behavior (ex. barking or snarling, running around, and/or jumping onto other passengers, etc. without being provoked) will not be accepted as a service animal.
The form can be filled out and downloaded here: DOT Service Dog Travel Form