Flying out of Miami with a dog, cat, or other small animal doesn’t have to be a nerve-racking experience. The right airline choice, paired with a solid understanding of paperwork and carrier rules, can turn a potentially chaotic trip into a predictable routine. Many carriers now offer clear pet policies, temperature-controlled environments, and helpful pre-travel checklists—but the catch is that not all airlines handle pets the same way, and fees can vary by hundreds of dollars.

Top Airlines for Pets Departing from Miami

When you’re planning a departure from Miami International Airport (MIA) or nearby airports, you’ll want to zero in on carriers that have straightforward pet travel programs, reasonable fees, and strong safety records. The following airlines consistently rank as reliable choices for in-cabin and cargo pet transport, each with distinct rules that suit different travel scenarios.

Alaska Airlines: A Flexible Perk-Rich Option

Alaska Airlines is a favorite among pet owners because it allows dogs, cats, rabbits, and household birds in the cabin on most domestic and international flights, as long as the pet and carrier together stay under the seat in front of you. The cabin pet fee is $100 each way, which is competitive. For larger animals that can’t fit under the seat, Alaska offers its Pet Connect cargo service, where pets travel in pressurized, climate-controlled compartments with dedicated handling. Reservations for both options are required in advance, and Alaska limits the number of pets per flight, so early booking is essential. You’ll also want to review the airline’s breed restrictions, especially for snub-nosed dogs and cats during summer months when heat can pose a risk.

Frontier Airlines: Low-Cost Cabin Travel for Small Pets

Frontier Airlines keeps things simple—pets travel in the cabin only, and the airline does not offer a cargo or checked baggage option for animals. This makes it a go-to for passengers with small dogs, cats, rabbits, and household birds that fit comfortably in a soft-sided carrier under the seat. The pet fee is typically $99 per direction, which is one of the lowest in the industry. Because space is limited, Frontier allows only a set number of pets per flight, so booking your pet’s spot at the same time you buy your ticket is crucial. Make sure your carrier meets Frontier’s exact dimensions (18" L x 14" W x 8" H or smaller), and be aware that international flights may have additional paperwork requirements beyond the airline’s policy.

Delta Air Lines: Full-Service Pet Transport with Broad Coverage

Delta has one of the most comprehensive pet travel programs from Miami, serving both domestic and international routes. Small pets can ride in the cabin for a fee (generally $125 each way to U.S. destinations, with variations for international flights). The carrier must fit under the seat and stay there for the entire flight. For medium and large pets, Delta offers two paths: checked baggage for eligible animals on certain flights, and Delta Cargo—a separate, temperature-controlled service with its own booking process. Delta’s website includes a helpful tool that lets you check if your route accepts pets, and you can call to confirm availability. Health certificates are mandatory, and some snub-nosed breeds are embargoed during warm months. Always confirm breed policies and seasonal restrictions before you finalize your plans.

JetBlue Airways: Cabin-Only Travel with JetPaws Perks

JetBlue is a cabin-only pet airline, meaning it doesn’t transport animals as checked luggage or cargo. That can be a plus if you prefer to keep your pet close. The fee is $125 each way, and your pet must remain in an approved carrier tucked under the seat. JetBlue’s JetPaws program provides a free pet carrier tag, a list of pet-friendly hotels and destinations, and early boarding for you and your furry companion. The JetBlue pet policy clearly outlines size limits and breed restrictions, and the airline encourages you to add the pet to your reservation early because spots are limited. International flights may require additional health documents beyond what JetBlue checks, so coordinate with your veterinarian well ahead of time.

Air Europa: A Strong Bridge for Transatlantic Journeys

For travelers heading from Miami to Spain or other European destinations, Air Europa is a practical choice because it accepts pets both in the cabin and in the cargo hold, depending on size. In-cabin pets must fit under the seat, while larger animals travel in a pressurized, ventilated cargo section. Fees vary by route and weight, so you’ll need to contact the airline or your booking agent for a specific quote. Because Air Europa often operates long-haul flights, IATA-compliant crates are required for cargo pets, and the airline demands a health certificate issued within 10 days of travel. Always verify the latest pet acceptance rules on Air Europa’s website before booking, as policies can shift with the season.

Essential Health and Documentation Requirements

Pets departing from Miami need more than just a plane ticket. Airlines and destination countries require a clear paper trail to prove your animal is healthy, properly vaccinated, and correctly identified. Missing a single document can result in denied boarding or quarantine, so give yourself at least a month to pull everything together.

Veterinary Health Certificate and Pet Passports

Nearly every airline requires an animal health certificate issued by a licensed veterinarian within 10 days of travel. This certificate confirms your pet is free from infectious diseases and fit to fly. For international trips, a pet passport that bundles vaccination history, microchip number, and health checks is often mandatory. The European Union, for example, requires an EU pet passport for long-term stays, while other countries may accept an equivalent government-issued document. Always check the destination’s embassy or consulate website for the most current import rules.

Rabies Vaccination and Microchip Compliance

A current rabies vaccination is the single most important health requirement. Most countries, including Spain, require that the vaccine be given at least 21 days before travel but not more than one year (or three years, depending on the vaccine type). The microchip must be an ISO 11784/11785 compliant 15-digit chip implanted before the rabies shot; otherwise, the vaccination may not be recognized. Keep all original vaccination records and microchip registration paperwork together and take multiple photocopies for your travel folder.

CDC Dog Import Form for U.S. Entry

If you’re returning to the United States with a dog, you may need to complete the CDC Dog Import Form. Recent rule changes have made this requirement more prominent—dogs that have been in high-risk rabies countries need specific paperwork and, in some cases, pre-arrival testing. Even dogs that have only been in rabies-free areas may need a written statement from the owner. Fill out the form online ahead of time, print the receipt, and keep it with your other travel documents to avoid delays at U.S. Customs.

Airline-Specific Pet Reservation and Forms

Beyond government paperwork, each airline has its own pet booking form or liability release. Alaska Airlines, for example, requires a Pet Agreement for in-cabin travel. Delta Cargo has a Live Animal Checklist that you’ll need to submit at drop-off. These forms are typically available on the airline’s website. Since some carriers limit the total number of pets per flight, confirming your pet’s space at the time of booking—not days later—is the safest bet.

Understanding Pet Travel Options and Baggage Policies

How your pet travels—under the seat, as checked baggage, or in a separate cargo shipment—affects cost, comfort, and eligibility. Understanding these categories will help you pick the right option long before you arrive at the airport.

In-Cabin Pet Travel: What You Need to Know

In-cabin travel is limited to small pets and requires a soft-sided or hard-sided carrier that fits entirely under the seat. Maximum dimensions vary by airline but often fall around 17 to 19 inches long, 10 to 11 inches wide, and 7 to 9 inches tall. Your pet must be able to stand up and turn around inside. Airlines typically charge a one-way fee between $95 and $125, and you’re allowed only one pet per passenger. Reserve your spot early, because carriers like JetBlue and Frontier often sell out of pet slots during peak travel times.

Checked Baggage and Cargo Transport for Larger Pets

If your pet is too large for the cabin, checked baggage or cargo are your options. Checked baggage means your pet travels in a ventilated compartment below the passenger deck, which is heated and pressurized. You check the pet at the ticket counter and retrieve it at baggage claim. This service is not available on all aircraft, and some airlines prohibit it during extreme temperatures. Cargo is a separate logistics service, often used for larger kennels, international shipments, or unaccompanied pets. It offers more control over scheduling and climate conditions, but requires drop-off and pick-up at cargo facilities, sometimes in a different terminal. Delta Cargo and Alaska’s Pet Connect are examples of dedicated pet cargo programs. Fees for these options are higher, sometimes several hundred dollars, so check with the airline’s cargo desk directly.

Layovers add complexity. If you’re traveling in-cabin, you’ll carry your pet through the terminal and can use pet relief areas during longer connections. For pets traveling in cargo or as checked baggage, you must confirm that the airline will transfer the animal directly between planes and does not require you to reclaim and re-check it at the connecting city. Whenever possible, book direct flights to reduce stress and avoid tight connections. If a layover is unavoidable, ask the airline how pets are handled during the transfer and whether the connecting airport has temperature-controlled holding areas.

International Pet Travel from Miami to Spain

Spain is a popular destination for Miami-based pet owners, but the process involves more than just booking a flight. From IATA crate requirements to Spanish customs checks, attention to detail will make the difference between a smooth arrival and a logistical headache.

IATA-Compliant Carriers and International Standards

The International Air Transport Association (IATA) Live Animals Regulations set the standard for pet travel containers on international flights. Your crate must be sturdy, well-ventilated on at least three sides, and large enough for your pet to stand, turn, and lie down without touching the top. For cargo travel, the door must be secured with a locking mechanism that cannot be opened accidentally. All wiring, nuts, and bolts must be covered or taped to prevent injury. Label the crate with “Live Animal” stickers, your contact information, and feeding instructions. Air Europa and many transatlantic carriers will refuse to board a pet if the crate does not meet IATA specs.

Step-by-Step Preparation for Pets Flying to Spain

Start preparing at least 4 weeks before departure.
1. Have your vet implant an ISO 11784/11785 microchip if you haven’t already.
2. Get your pet’s rabies vaccination after the microchip is in place.
3. Obtain an EU health certificate (or equivalent) from an accredited USDA veterinarian if required, endorsed by the USDA.
4. Book a direct flight if possible—Miami to Madrid or Barcelona on Air Europa, Iberia, or other partners can reduce transfer stress.
5. Choose an IATA-approved kennel, line it with absorbent bedding, and let your pet acclimate to it for several days before the trip.
6. Feed a light meal about 4 hours before departure and limit water intake just before heading to the airport to avoid an overly full bladder, but make sure your pet is hydrated.
7. Pack a travel kit with a leash, copy of all documents, a photo of your pet, and emergency contact numbers.

Arrival and Customs Procedures in Spain

Upon landing, you’ll proceed to the customs animal inspection point. Spanish authorities will check the microchip, verify the rabies vaccination certificate, and review the health certificate. They may also conduct a visual health inspection. Having your paperwork neatly organized speeds things up dramatically. If your pet is traveling in cargo, you’ll collect the crate at the designated animal reception area. Some airports allow you to use a pet relief area immediately after clearance. Once cleared, your pet will need an EU pet passport for ongoing travel within the European Union if you plan to stay longer.

Tips for Safe and Comfortable Pet Air Travel from Miami

Even with the best airline policies, your pet’s well-being depends on thoughtful preparation, in-flight strategies, and post-flight care. These practical steps can help reduce anxiety for both of you.

Pre-Flight Conditioning and Crate Training

Introduce the travel carrier weeks ahead of time. Leave it open in your living space with a favorite blanket or toy inside. Feed your pet near the carrier or toss treats into it to build positive associations. Practice short car rides in the carrier and, if possible, simulate the airport environment by walking through busy areas. For cats, spray the carrier with a pheromone spray like Feliway an hour before travel. A pet that views the crate as a safe den rather than a trap will be far calmer on the plane.

Day of Travel: What to Do at the Airport

Arrive at Miami International at least 3 hours before a domestic flight and 4 hours for international travel when flying with a pet that will travel in cabin or checked baggage. At check-in, present your pet’s paperwork and carrier for inspection. Many airlines will place a sticker on the carrier confirming clearance. Avoid giving large meals right before boarding; a small amount of water is fine. Walk your pet outside the terminal or use a pet relief area before security. During security screening, you’ll need to remove the pet from the carrier and walk through the metal detector while the carrier goes through the X-ray machine. For skittish pets, request a private screening room if available.

Post-Flight Care and Monitoring

Once you land, let your pet out of the carrier in a safe, enclosed space as soon as possible. Offer water and a small amount of food after they’ve had a chance to settle. Watch for signs of stress or illness such as lethargy, vomiting, or refusal to eat over the next 24 hours. Contact a local veterinarian if anything seems off. Keeping copies of your pet’s health records and a list of nearby vet clinics at your destination is a simple way to stay prepared.

Planning ahead and choosing the right airline from Miami can transform pet travel from a gamble into a manageable routine. By matching your pet’s size, temperament, and your itinerary with the carrier that best supports those needs, you give your companion the safest possible journey. Whether you’re flying in-cabin with Frontier’s low fees or sending a larger dog via Delta Cargo, the key is starting early, checking every requirement twice, and keeping your pet’s comfort at the center of every decision.