Flying with a pet from Wilmington, North Carolina, doesn’t have to be a stressful guessing game. When you know which airlines actually accept animals, what their rules are, and how to prepare, you transform a potential headache into a predictable plan that keeps both you and your pet calm. Not every carrier serving Wilmington International Airport (ILM) offers pet-friendly options, but the ones that do—American Airlines, Delta Air Lines, United Airlines, and Avelo Airlines—have clear policies worth studying. This guide breaks down the best airlines for pets from Wilmington, what you need to book and pack, and how to move through the airport with confidence.

What to Know Before You Fly With a Pet from ILM

Wilmington International Airport accommodates several major airlines and a couple of low-cost carriers, but route options are more limited compared to larger hubs. American, Delta, and United connect ILM to their main domestic networks, while Avelo targets leisure destinations. Sun Country also flies seasonally but does not accept pets in the cabin, only trained service animals. Because both airline policies and available seats change frequently, always verify the most current rules directly with the carrier before you book.

The airport itself is relatively compact, which can work in your favor when navigating with an animal. You won’t face long terminal treks, and relief areas are easy to reach. Still, the small terminal can feel crowded during peak times, so arriving early gives you and your pet space to settle.

Airlines That Welcome Pets on Flights from Wilmington

Four airlines operating out of ILM allow pets on board under specific conditions. Each one defines its own list of accepted species, carrier dimensions, fees, and whether pets can travel only in the cabin or also as checked baggage or cargo. Understanding these nuances before you book prevents last-minute surprises at the check-in counter.

American Airlines Pet Policy

American Airlines accepts small dogs and cats in the cabin on most domestic flights from Wilmington, provided the combined weight of the pet and carrier does not exceed 20 pounds. The pet must remain inside a soft- or hard-sided carrier that fits entirely under the seat in front of you. American charges a pet fee of $125 per carrier each way, payable at the airport. For pets too large for the cabin, American offers the option of checking them as baggage on certain aircraft within the U.S., but this service is not available on all routes, including some regional jets that serve ILM. Always call ahead to confirm that your specific flight can accommodate a checked pet. American also prohibits snub-nosed dog and cat breeds in the cargo hold due to respiratory risks.

You can find the most up-to-date American Airlines pet policy on their official website.

Delta Air Lines Pet Policy

Delta allows small dogs, cats, and household birds to travel in the cabin on flights within the United States, including from Wilmington. The pet carrier must fit under the seat and be leak-proof and ventilated. The fee is $95 each way for U.S. flights. Delta does not carry pets as checked baggage but offers a separate cargo service called Delta Cargo for larger animals. This service requires a separate booking and may involve drop-off at a cargo facility away from the passenger terminal. If you’re traveling internationally from ILM via connections, additional country-specific rules apply. Delta also restricts snub-nosed animals from cargo travel during warm months.

Review Delta’s detailed pet travel requirements on their pet travel page.

United Airlines Pet Policy

United accepts small dogs and cats in the cabin on most domestic routes from Wilmington for a $125 fee each way, with an increasing charge for layovers. The pet must remain in a carrier that fits under the seat, and the combined weight of pet and carrier cannot exceed approximately 18 pounds. United’s PetSafe cargo program is available for larger animals, but this service is operated separately and not all airports offer it—verify ILM-to-your-destination cargo availability before planning to use it. United also bans brachycephalic (short-nosed) dogs and cats from cargo due to breathing concerns. Cabin reservations for pets can be made online or by calling United directly.

Access the complete United Airlines pet policy at United’s website.

Avelo Airlines Pet Policy

Avelo, a low-cost carrier with nonstop routes from ILM to several eastern U.S. cities, allows small cats, dogs, rabbits, and domestic birds to travel in the cabin on domestic flights. The pet carrier must fit under the seat and stay closed throughout the flight. Avelo’s pet fee is typically lower than legacy carriers, often around $95 each way, but space is limited to a small number of pets per flight, so early booking is critical. Avelo does not transport pets as checked luggage or in cargo. On international flights, only trained service animals are permitted. Always double-check Avelo’s current policy before purchasing your ticket.

Read Avelo’s pet travel rules on their policies page.

Cabin vs. Cargo Travel: Making the Right Choice for Your Pet

The decision to keep your pet in the cabin or send it in the cargo hold is not just about size. It’s about your animal’s temperament, health, and the specifics of your flight. In-cabin travel allows you to monitor your pet, offer reassurance, and manage feeding and bathroom breaks before and after the flight. The carrier sits under the seat, so space is limited—most pets must be able to stand up and turn around inside the carrier without touching the top. If your dog or cat is over 15–20 pounds, in-cabin may not be an option.

Cargo travel uses a pressurized, temperature-controlled compartment in the belly of the aircraft. It’s the only choice for medium and large pets that cannot fit in the cabin. The environment is dim and can be noisy, which may increase stress. Brachycephalic breeds—like Bulldogs, Pugs, Persian cats—face higher risks in cargo because their shortened airways make breathing more difficult under stress or heat, and most airlines ban them from cargo during certain times of year or entirely. If your pet has any pre-existing health condition, a conversation with your veterinarian is non-negotiable before opting for cargo. Some animals simply shouldn’t fly in cargo regardless of airline policy.

When you must ship a pet as cargo, use an IATA-compliant hard-sided crate that allows the animal to stand, sit, and lie down naturally. Secure the door with zip ties, attach food and water bowls to the inside of the door, and label the crate with your contact information and a “Live Animal” sticker. Never sedate a pet for air travel unless specifically directed by your vet, as sedation can impair breathing and temperature regulation at altitude.

How to Book a Pet on a Flight from Wilmington

Booking your pet correctly takes more than clicking a checkbox during online checkout. Follow these steps to secure a spot and avoid being turned away at the gate.

Check the airline’s pet policy first. Not every flight sells pet space, and some aircraft types cannot physically accommodate pet carriers under seats. Policies change without notice, so visit the airline’s official website or call their reservations line.

Call to add your pet immediately after booking your own ticket. Most airlines cap the number of pets per flight—often just two to four in the cabin total. Even if the website shows availability, a phone agent can confirm the specific flight and block the space. For cargo, you’ll book separately through the airline’s cargo division, often days or weeks ahead.

Pay the pet fee. This is usually collected at the airport check-in counter, not online. Have payment ready and arrive with extra time to handle the paperwork.

Choose direct flights when possible. Connections multiply stress for your pet and increase the chance of missed transfers, especially for cargo. Avelo’s nonstop routes from ILM are a good example of pet-friendly schedules that minimize time in transit.

Reconfirm 24–48 hours before departure. Policies, aircraft swaps, and weather can impact pet travel. A quick call can save a ruined trip.

Carrier Requirements, Documentation, and Health Checks

The pet carrier is your animal’s seat belt. For in-cabin travel, airlines require a soft- or hard-sided kennel that meets maximum dimensions (commonly around 17.5” L x 12” W x 7.5” H, but these vary by airline). It must be leak-proof, have ventilation on at least two sides, and stay securely zipped or latched. Soft-sided carriers offer a little more flexibility under the seat and are generally lighter. Hard-sided carriers are sturdier but bulkier. Look for one made of durable, easy-to-clean material and line it with an absorbent pad.

Before travel day, let your pet sleep in the carrier, eat treats inside, and spend time with the door open. This reduces anxiety by making the carrier a familiar den rather than a trap.

Paperwork matters as much as the carrier. Most airlines flying from ILM require a Certificate of Veterinary Inspection (CVI) issued within 10 days of travel. Your Wilmington-area veterinarian will know exactly what the form requires. Alongside the CVI, bring proof of current rabies vaccination and any other core vaccines. If you’re traveling internationally or to certain states like Hawaii, additional health certificates, titer tests, or quarantine arrangements may be necessary. The USDA APHIS Pet Travel website provides official guidance for interstate and international animal transport.

ILM has a single terminal, which makes the logistics easier than at sprawling hubs. Pet relief areas are located outside the terminal, with grass and waste-disposal bags provided. Plan to use them before checking in and again right before you pass through security. A pet that has had a chance to relieve itself will be more comfortable during the flight.

At the security checkpoint, TSA requires you to remove your pet from the carrier. You’ll carry or leash your animal through the metal detector while the carrier goes through the X-ray machine. Keep your pet on a secure leash or harness; the bustle of security can frighten even the calmest animal. Hold the leash firmly, and if your pet is small, consider carrying it in your arms through the scanner. TSA officers typically do not ask for vaccination records, but the airline might at check-in, so have them accessible in your carry-on.

Once airside, find a quiet spot near your gate to wait. Avoid feeding your pet a large meal within four hours of flight time to prevent motion sickness, but do offer small sips of water. Keep the carrier closed until you’re settled on the plane; flight attendants will likely ask you to store it under the seat for taxi, takeoff, and landing.

Preparing Your Pet for a Calm Flight

A successful trip starts at home. In the weeks leading up to the flight, get your pet accustomed to the carrier. Leave it open in a common area with a soft blanket and occasional treats. Practice short car rides in the carrier to simulate motion. If your pet shows signs of severe anxiety—constant panting, whining, or trying to escape—talk to your vet. They may recommend natural calming aids, pheromone collars, or anxiety wraps, and can discuss if mild anti-anxiety medication would be appropriate (while noting the risks of sedation in flight).

On the day of travel, exercise your pet well before heading to the airport. A tired animal is more likely to rest during the flight. Pack a small go-bag for your pet: collapsible water bowl, leash, waste bags, a portion of food for after arrival, and a favorite toy or blanket that smells like home. Avoid new foods or treats that could cause stomach upset.

Once on board, resist the urge to open the carrier. The cabin environment is unfamiliar, and a loose pet can become a hazard. Instead, talk softly to your pet, keep the carrier near your feet, and try to project calm energy. Pets are expert barometers of human stress—if you’re relaxed, they stand a better chance of following suit.

Common Pitfalls and How to Avoid Them

Even experienced travelers run into problems. Knowing the most frequent issues helps you sidestep them entirely.

Booking a flight without confirming pet space. Just because the airline allows pets doesn’t mean your exact flight does. Always call to add your pet to the reservation after you book.

Assuming all airports have relief areas inside security. ILM’s relief areas are outside the terminal. Plan accordingly.

Showing up with an unapproved carrier. Even an inch over the maximum dimensions can get you denied. Measure carefully and check the airline’s specific size chart.

Overlooking weather restrictions. Airlines restrict pet cargo travel when temperatures at any point on the route (including connection cities) fall below 20°F or above 85°F. Even cabin pets can be affected if the aircraft sits on a hot tarmac. Book early morning or late evening flights during summer to reduce heat exposure.

Neglecting identification. In addition to a collar tag, your pet should be microchipped and the registration up to date. A temporary tag with your travel mobile number and destination address can be a lifesaver if someone finds your carrier sleeve.

Choosing the Best Airline for Your Specific Situation

There is no single “best” airline for pets from Wilmington; the right choice depends on your pet’s size, breed, and destination. If you have a small dog or cat and value simplicity, Avelo’s nonstop flights and easy cabin policy are hard to beat. For larger pets that must fly cargo, United’s PetSafe program and American’s checked baggage option provide alternatives, but only on routes and aircraft that support them. Delta sits in the middle, with a robust cabin program and separate cargo service. Always cross-reference the pet policy with the actual flight schedule out of ILM to your intended city.

Regional connections through hubs like Charlotte (American), Atlanta (Delta), or Washington-Dulles (United) add complexity. If you can avoid connections, do so. Nonstop routes offered by Avelo to cities like Baltimore, New Haven, and Orlando make the journey significantly simpler for you and your pet.

Resources for Ongoing Policy Updates

Airlines revise pet fees, breed restrictions, and embargo dates regularly. Rather than rely on third-party summaries, check these official sources directly:

Pairing reliable policy information with early preparation turns flying with a pet into a manageable experience. Start your planning at least a month before travel, and you’ll be ready for a smooth departure from Wilmington International Airport.