When you need to fly with a dog, cat, or other small pet from Glendale, Arizona, the entire experience hinges on your choice of airline. While most flights depart from nearby Phoenix Sky Harbor International Airport (PHX), not all carriers treat four-legged travelers the same way. Pet policies, fees, and in-cabin accommodation can vary dramatically, and a mismatch may force last-minute changes, unexpected costs, or even denied boarding.

This guide provides a detailed look at the best airlines for pets from Glendale, with clear comparisons, practical pre-flight preparation steps, and advice that helps you avoid the most common travel pitfalls. Whether your pet is a tiny Chihuahua or a 50-pound retriever that must ride in cargo, understanding your options will lead to a safer, calmer journey for everyone.

Why Selecting the Right Airline Matters

A pet-friendly flight policy is more than a fee schedule. For in-cabin travel, the space under the seat dictates the maximum carrier dimensions, and each airline sets its own weight limit—for the pet alone or the combined weight of pet and carrier. Carriers that strictly enforce size rules may turn away an animal if the crate appears too tight, and that decision often happens at the gate with no refund options.

Beyond dimensions, airlines differ in how many pets they accept per flight, whether they require health certificates or specific vaccination records, and how they handle connecting itineraries. Some, like Southwest, do not allow pets at all unless they are trained service dogs. Others, like Alaska Airlines, maintain a consistent reputation for accommodating animals, but even they restrict certain snub-nosed breeds from the cargo hold because of breathing risks. Choosing a carrier that aligns with your pet’s temperament, size, and breed protects both safety and your travel budget.

Comparing In-Cabin Pet Policies from Phoenix Sky Harbor

Most small dogs and cats that fit comfortably in a soft-sided carrier under the seat can fly in the cabin on multiple airlines serving PHX. The table below summarizes current policies for major carriers that passengers from Glendale commonly use. All fees are one-way and subject to change; always confirm directly with the airline before booking.

Airline In-Cabin Fee Max Carrier Size (L x W x H) Pet Weight Limit Cargo/Checked Option Key Notes
Alaska Airlines $100–$125 Soft: 17" x 11" x 9.5"
Hard: 17" x 11" x 7.5"		 Pet + carrier up to 20 lbs Yes (checked and cargo) Highly rated; allows in-cabin on most aircraft; breed restrictions apply to cargo.
Frontier Airlines $75–$125 18" x 14" x 8" Pet + carrier ≤ 20 lbs No Budget-friendly; strict carrier size enforcement; limited number of pets per flight.
Delta Air Lines $95–$125 Soft: 18" x 12" x 9"
Hard: 18" x 12" x 9"		 Pet + carrier ≤ 20 lbs Via Delta Cargo only In-cabin on most domestic flights; advance booking required; no longer offers pets as checked baggage.
United Airlines $125 Soft: 18" x 11" x 11"
Hard: 17.5" x 12" x 7.5"		 Pet + carrier ≤ 20 lbs Via United Cargo (limited) No pets allowed in cabin on transatlantic or transpacific flights; snub-nosed breeds cannot travel in cargo.
American Airlines $125–$150 Soft: 19" x 13" x 9"
Hard: 19" x 13" x 9"		 Pet + carrier ≤ 20 lbs Yes (checked on select flights) Allows up to two pets per flight in first class and main cabin; cargo service has temperature restrictions.
Spirit Airlines $110 18" x 14" x 9" Pet + carrier ≤ 20 lbs No Single pet per carrier; cannot travel as checked baggage; limited to domestic and select Caribbean routes.
Allegiant Air $50 per segment 18" x 14" x 9" (max height 9") Pet + carrier ≤ 20 lbs No Lowest base fee; limit of two pets per passenger; can be combined with medical necessity letter for ESAs (no longer required by DOT).
JSX Varies (contact airline) Must fit under front seat of private-style cabin Small pets only; consult airline No Semi-private jet service from Phoenix to select destinations; fewer passengers, quieter environment, but not all routes serve PHX.
Southwest Airlines N/A No in-cabin pets (except trained service dogs) — No Only trained service animals; emotional support animals no longer accepted as of 2021; good to know if you have a service dog.

Alaska Airlines consistently earns top marks from passengers who travel with pets. Their transparent check-in process and employees who are comfortable handling carriers make the experience smoother. Frontier wins on price for short hops, but you must measure your carrier precisely. Spirit and Allegiant also offer low fees, yet they impose tighter route networks. JSX deserves mention for people willing to pay more for a calmer atmosphere; because the cabin is less crowded and boarding is streamlined, anxious pets often settle faster.

If your animal is too large for the cabin or the carrier cannot be fully stowed under the seat, you will need to look at cargo or checked-baggage options. Always verify whether the airline accepts your specific breed in cargo, especially during summer when Phoenix temperatures can cause heat-related embargoes.

Flying with Pets in the Cargo Hold

For medium and large dogs that cannot travel in the cabin, the cargo hold (often called “checked pet” or “live animal” service) is the primary alternative. Not every airline at PHX offers this, and those that do impose strict seasonal cutoffs. Alaska Airlines and American Airlines remain the two most reliable options for checked pets from Phoenix, though American only accepts pets as checked baggage on certain domestic flights and suspends the service during extremely hot or cold weather. Delta shifted all pet travel outside the cabin to Delta Cargo, a separate logistics arm, which may involve different drop-off locations and earlier cut-off times.

Breed restrictions are especially important. Brachycephalic (short-nosed) dogs and cats—including Bulldogs, Pugs, Boston Terriers, Boxers, Persian cats, and Himalayan cats—are commonly banned from cargo travel because they are susceptible to breathing difficulties and overheating. Airlines that do accept snub-nosed breeds in cargo are rare; most, including Alaska and American, refuse them entirely. Mixed breeds with flat faces may also be rejected. Verify with the airline well in advance if your pet fits any restricted category.

Temperature embargoes are another reality when departing from the Arizona heat. Between May and September, many airlines limit or halt pet cargo acceptance out of PHX when outside temperatures exceed 85°F (29°C) on the tarmac. Even if a flight is scheduled for early morning, the airline may refuse checked pets if the forecast predicts high afternoon heat at the destination or connection point. Always book direct, early-morning flights to minimize these risks.

Airlines That Only Accept Service Animals

A common point of confusion is the difference between service animals, emotional support animals, and regular pets. As of 2021, the U.S. Department of Transportation no longer requires airlines to recognize emotional support animals (ESAs) as service animals. Carriers are free to classify ESAs as pets, meaning they must meet the same size, weight, and fee requirements. Southwest Airlines, for example, has never allowed pets in the cabin and now only permits trained service dogs that perform specific tasks for a person with a disability. If you have a trained service dog, Southwest is an option, but you must provide the required forms and documentation before travel. For everyone else flying with a pet, the airlines listed in the table are your starting point.

How to Prepare Your Pet for Air Travel

Even with the most pet-welcoming airline, a flight can be stressful without proper preparation. Start with a pre-travel vet visit. Many airlines require a health certificate issued within 10 days of travel (for cargo) or within 30 days for in-cabin pets. The certificate confirms your pet is free from infectious diseases and up to date on vaccinations, particularly rabies. Your vet can also advise whether a mild sedative is appropriate, though most airlines and veterinarians discourage sedation because altitude effects on blood pressure can be unpredictable. Instead, focus on crate training and desensitization.

  • Acclimate your pet to the carrier weeks before the trip. Leave the crate open at home with comfortable bedding and treats, gradually increasing the time your pet spends inside with the door closed.
  • Practice car rides in the carrier to simulate movement and reduce anxiety.
  • Adjust feeding schedules so your pet has a light meal 4–6 hours before departure and access to water until you leave for the airport. Avoid large meals right before the flight.
  • Pack a travel kit that includes a collapsible water bowl, absorbent pads, waste bags, a leash, vaccination records, and a recent photo of your pet in case of escape.
  • Label the carrier with your contact information, the pet’s name, and a “Live Animal” sticker if required by the airline.

The American Veterinary Medical Association provides a thorough checklist for calming pets during travel. You can review it on their official pet travel resource page. If your pet shows extreme distress, consider whether the trip is necessary or if a professional pet sitter or boarding facility would be healthier.

Phoenix Sky Harbor International Airport, about 20 minutes east of Glendale, is well equipped for travelers with animals. All three terminals (2, 3, and 4) have designated pet relief areas both before and after security. The post-security spots let you give your dog a bathroom break and a drink of water after check-in, which is especially helpful if you have a layover or a long wait. Look for artificial turf sections with waste bags and disposal bins. The airport website offers updated maps and location details; you can find them by visiting the Phoenix Sky Harbor website and searching for "pet relief areas."

When going through security, you will need to remove your pet from the carrier while TSA screens the carrier itself. A calm, properly harnessed animal makes this process faster. If your pet is prone to bolting, request a private screening room. TSA officers are trained to handle this request discreetly. Once through, keep your pet in the carrier at all times except when using the relief areas. Leash your dog even inside the terminal; cats and small animals should remain enclosed.

Alternatives to Flying: Local Pet Boarding and Relocation Services

Sometimes the logistics or health of your pet make flying impossible. If you live in Glendale and need to travel without your animal, high-quality boarding facilities and in-home pet sitters abound across the northwest Valley. Look for businesses accredited by Pet Care Services Association, or ask your veterinarian for a referral. For moves or extended trips, you can also hire a professional pet relocation company that handles ground transport or arranges air cargo with climate-controlled ground deliveries. These services pick up your animal from your home and manage all paperwork, crate requirements, and airline coordination, which can be especially helpful when navigating import requirements for international moves.

Frequently Asked Questions About Flying from Glendale with a Pet

Can I fly with a large dog from Phoenix Sky Harbor?

Yes, provided the airline offers checked-pet or cargo service and your dog meets health and breed requirements. Large dogs cannot ride in the cabin. Alaska and American accept large dogs as checked baggage on many domestic flights from PHX, while Delta Cargo handles large animals through a separate shipping process. Always check temperature embargoes during the Phoenix summer.

What documents are necessary to fly with a pet?

At minimum, you need a health certificate from a veterinarian (often required within 10-30 days), proof of rabies vaccination, and any additional requirements of your destination state or country. For in-cabin pets, many airlines do not ask for a certificate on domestic flights, but having one is still wise. International travel usually requires an endorsed USDA health certificate, microchip, and possibly an import permit.

Are emotional support animals still allowed in the cabin?

No. U.S. airlines no longer recognize emotional support animals as a separate category. ESAs now travel as regular pets, which means they must fit in an approved carrier under the seat and the owner pays the pet fee. Trained service dogs that perform specific tasks for a person with a disability are still permitted free of charge.

How much do airlines charge for pets in the cabin?

One-way fees usually range from $50 (Allegiant) to $150 (some American routes). Most fall between $100 and $125. Expect to pay this fee each way, and note that layovers of more than a few hours may incur additional charges on some carriers.

Is it safe for a brachycephalic breed to fly in cargo?

Almost all major airlines ban snub-nosed breeds from the cargo hold because of the elevated risk of respiratory distress. These dogs and cats should only fly in the cabin, if they can safely fit in an under-seat carrier. If your pet is too large for the cabin, you may need to explore ground transport or pet relocation services with climate-controlled vehicles.

What if my pet is too anxious to fly?

Talk with your veterinarian about behavior modification, pheromone sprays, or anti-anxiety medications that are safe at altitude. Many professionals advise against sedatives because they can lower blood pressure and impair breathing. Better options include practicing short car trips in the carrier, using calming treats, and booking a direct, off-peak flight when the cabin is quieter.

Choosing the right airline from Glendale comes down to matching your pet’s size, breed, and temperament with a carrier whose policies, fees, and reputation align with your needs. Alaska Airlines remains the standout for in-cabin comfort and cargo reliability, while Frontier and Spirit provide solid options for budget-conscious travelers with small pets. Check each airline’s policy updates directly before booking, secure the required health documentation, and prepare your animal gradually.

When you combine a pet-appropriate airline, a well-prepared carrier, and knowledge of the relief areas and security at Phoenix Sky Harbor, you set the stage for a trip that is safe and far less stressful for both you and your animal companion.