Does Allegiant allow service dogs?

Yes. Like every U.S. airline, Allegiant Air accepts trained service dogs in the cabin at no charge under the Air Carrier Access Act. You complete the federal DOT Service Animal Air Transportation Form and submit it to the airline before your flight.

Can I fly Allegiant with an emotional support animal?

No. Since the 2021 U.S. DOT rule, emotional support animals are no longer accepted in the cabin as service animals on Allegiant Air or any U.S. airline. An ESA travels as a regular pet (carrier plus the airline's pet fee) — or, if the dog is task-trained for a psychiatric disability, it can fly as a psychiatric service dog.

What form do I need to fly Allegiant with a service dog?

The DOT Service Animal Air Transportation Form. It certifies your dog's health, training, and behavior, and it's the same federal form for every U.S. airline. Submit it to Allegiant in advance of your flight.

How far ahead do I submit the form to Allegiant?

The DOT rule lets an airline require the form up to 48 hours before departure (you can still bring it to the gate for bookings made inside that window). Confirm Allegiant's exact deadline and submission method on their official service-animal page.

Travel · Allegiant Air

Flying Allegiant with a service dog

Trained service dogs fly in the Allegiantcabin at no charge under the Air Carrier Access Act — you just complete one federal form. Emotional support animals lost their in-cabin status in the 2021 DOT rule and now travel as pets. Here’s exactly what that means for your Allegiant flight.

The rules that apply on every U.S. airline

Air travel with a service dog is governed by federal law, so the core rules are the same whether you fly Allegiant or any other U.S. carrier:

Your service dog flies free, in the cabin
Under the Air Carrier Access Act, a trained service dog travels in the cabin at your feet at no charge — no pet fee, no cargo hold.
You file one federal form: the DOT Service Animal Air Transportation Form
It certifies your dog’s health, training, and behavior. It’s the same one-page federal form for every U.S. airline, Allegiant included — you submit it to the airline before you fly.
Airlines can ask for it up to 48 hours ahead
The DOT rule lets a carrier require the form up to 48 hours before departure. For flights booked inside that window, you can bring it to the gate.
Behavior + fit rules apply
The dog must be under control and house-trained, and fit at your feet without blocking the aisle or intruding on another passenger’s space. Airlines may limit you to two service dogs.
Emotional support animals are no longer in-cabin service animals
Since the 2021 DOT rule, an ESA is not accepted in the cabin as a service animal on Allegiant or any U.S. airline. It travels as a pet (carrier + pet fee) — unless the dog is task-trained for a psychiatric disability, in which case it flies as a psychiatric service dog.

Flying Allegiant specifically

The federal rules above are what govern your service dog on Allegiant. For Allegiant’s exact submission deadline, the portal to file the DOT form, and any carrier-specific details, check the airline’s own service-animal page — it’s the authoritative, always-current source.

Visit Allegiant’s site →

Flying for a mental-health condition?

A psychiatric service dog flies Allegiantin the cabin — an ESA doesn’t

If a dog is trained to perform tasks for anxiety, PTSD, or another psychiatric disability, it qualifies as a psychiatric service dog and travels in the cabin like any service dog. A therapist-signed PSD letter documents the clinical basis for housing and workplace accommodation.

See the PSD letter →

Flying Allegiant with a service dog — FAQ

Does Allegiant allow service dogs?: Yes. Like every U.S. airline, Allegiant Air accepts trained service dogs in the cabin at no charge under the Air Carrier Access Act. You complete the federal DOT Service Animal Air Transportation Form and submit it to the airline before your flight.
Can I fly Allegiant with an emotional support animal?: No. Since the 2021 U.S. DOT rule, emotional support animals are no longer accepted in the cabin as service animals on Allegiant Air or any U.S. airline. An ESA travels as a regular pet (carrier plus the airline's pet fee) — or, if the dog is task-trained for a psychiatric disability, it can fly as a psychiatric service dog.
What form do I need to fly Allegiant with a service dog?: The DOT Service Animal Air Transportation Form. It certifies your dog's health, training, and behavior, and it's the same federal form for every U.S. airline. Submit it to Allegiant in advance of your flight.
How far ahead do I submit the form to Allegiant?: The DOT rule lets an airline require the form up to 48 hours before departure (you can still bring it to the gate for bookings made inside that window). Confirm Allegiant's exact deadline and submission method on their official service-animal page.

Where to next

All air-travel rights

The ACAA, the 2021 DOT rule, the DOT form, and what every airline can and can't require — in one place.

Sideways

Psychiatric service dog letter

Therapist-signed documentation for a psychiatric service dog — the path that keeps in-cabin travel rights.

Up one level

Know all your rights

Housing, public access, and travel — federal + state, in plain English.

Why trust us

Meet the clinicians

Real, state-licensed mental-health professionals — not a pdf mill.