Summer Airline Pet Cargo Embargoes Starting in May

Why Summer Cargo Embargoes Exist

Every year, airlines impose temporary restrictions on transporting live animals in cargo holds during the hottest months. These embargoes protect pets from heat-related illness, organ failure, and death that can occur when animals are exposed to extreme temperatures during tarmac waits, loading, and transit. According to the U.S. Department of Transportation, heat exposure is one of the leading causes of pet incidents during air travel.

Cargo holds on commercial aircraft are climate-controlled during flight, but the real danger lies in the ground handling phase: the time pets spend on the tarmac, in transport vehicles, and in warehouse areas before and after loading. Ground temperatures at airports in the American Southwest, Southeast, and Gulf Coast routinely exceed 100 °F in summer, making safe cargo transport impossible during peak hours.

Temperature Thresholds by Airline

While each airline publishes its own pet travel policy, the industry largely follows a consistent set of temperature limits. Below is a general overview based on publicly available airline policies.

Upper Heat Limit

• 85 °F (29.4 °C): This is the most widely used upper threshold. Airlines such as American Airlines will not accept warm-blooded animals for cargo transport if the current or forecasted ground temperature at any airport on the itinerary exceeds 85 °F.
• Some carriers use a slightly lower threshold of 80 °F (26.7 °C) for snub-nosed breeds or very young animals.

Lower Cold Limit

• 45 °F (7.2 °C): The standard lower threshold for most animals.
• 20 °F (minus 6.7 °C): The absolute minimum applied by some carriers when an acclimation certificate from a veterinarian is provided.

Temperature checks are performed at the origin, destination, and all connecting airports. If any single point on the route falls outside the safe range, the shipment is denied.

Breed Restrictions: Brachycephalic and High-Risk Animals

Snub-nosed (brachycephalic) breeds face the most severe restrictions, and many airlines ban them from cargo travel year-round, not just in summer. These breeds have shortened airways that make breathing difficult, especially in warm, low-oxygen, or stressful environments. Veterinary consensus is clear: brachycephalic animals are at significantly higher risk of respiratory distress during air cargo transport.

Commonly Restricted Dog Breeds

• Bulldog (English and French)
• Pug
• Boston Terrier
• Boxer
• Shih Tzu
• Pekingese
• American Bully
• Affenpinscher
• Cavalier King Charles Spaniel (on some carriers)

Commonly Restricted Cat Breeds

• Persian
• Himalayan
• Exotic Shorthair
• Burmese

Owners of these breeds should plan for cabin travel (if the animal meets size requirements) or ground transport as the default option, regardless of season.

Affected Routes and Seasonal Embargo Stations

Certain airports are subject to blanket cargo embargoes for live animals during the entire May through September window, regardless of the daily forecast. American Airlines, for example, does not ship warm-blooded animals from, to, or through these stations during that period:

• Phoenix, Arizona (PHX)
• Las Vegas, Nevada (LAS)
• Tucson, Arizona (TUS)
• Palm Springs, California (PSP)

Beyond these fixed embargo stations, any route can be affected on a day-to-day basis. Airports across Texas, Florida, the Gulf states, and the Southeast regularly hit the 85 °F threshold from late May through mid-September. International routes with connections through Middle Eastern or South Asian hubs face similar seasonal restrictions.

Routes With the Highest Risk of Day-of Cancellation

• Any itinerary with a connection through Dallas/Fort Worth (DFW), Houston (IAH), Miami (MIA), or Atlanta (ATL) during June through August.
• Routes to or from Southern Europe and North Africa during peak summer.
• Trans-Pacific routes with layovers in subtropical hubs.

Current Status of Major U.S. Airline Cargo Programs

The landscape of pet cargo shipping has changed dramatically in recent years. Before booking, owners should verify the current status of each carrier's program.

American Airlines Cargo

American Airlines remains one of the few major U.S. carriers still accepting pets in cargo for the general public. However, the airline enforces strict seasonal embargoes (May 1 through September 30 at select stations), the 85 °F temperature cap, and a permanent ban on brachycephalic breeds in cargo.

Delta Cargo

Delta Air Lines has restricted its pet cargo program and, as of recent policy updates, only accepts live animal shipments for active U.S. military personnel or U.S. State Department Foreign Service members with permanent change-of-station orders. General public bookings are not available.

United Airlines

United Airlines discontinued its PetSafe cargo program. Pets that qualify for cabin travel (generally under 25 lbs including carrier) may still fly in the passenger cabin, but cargo options for larger animals are no longer offered.

For pet owners with larger dogs or animals that cannot fly in the cabin, the shrinking number of available cargo programs makes early planning essential. Consider consulting a professional pet transport company for alternatives. If you are considering boarding instead, see our guide on how to choose a dog boarding facility this summer.

Scenario-by-Scenario Safety Checklist

Scenario 1: You Have a Cargo Booking Between May and September

• Confirm your airline still operates a live-animal cargo program for the general public.
• Check whether your pet's breed is on the restricted list.
• Verify that all airports on your itinerary (origin, connections, destination) are not on the seasonal embargo list.
• Ask the airline about the temperature forecast window: most carriers check forecasts 24 to 72 hours before departure.
• Request the earliest morning departure available; tarmac temperatures are lowest before 9 a.m.

Scenario 2: Your Pet Is a Brachycephalic Breed

• Do not attempt cargo travel at any time of year. Most carriers ban these breeds from cargo permanently.
• If your pet fits under the seat in an airline-approved carrier, cabin travel may be an option.
• Ground transport services are the safest alternative for medium and large brachycephalic breeds.
• Speak with a veterinarian about a health certificate and travel fitness evaluation before any journey.

Scenario 3: You Are Relocating and Cannot Avoid Summer Travel

• Contact a USDA-registered, IPATA-member pet transport company for ground or chartered air options.
• Ground transport within the continental U.S. typically costs several hundred to a few thousand dollars depending on distance and service level.
• Dedicated pet charter flights are the most expensive option but avoid commercial cargo restrictions entirely.
• Plan at least 8 to 12 weeks ahead, as reputable transporters fill up quickly in summer.

Scenario 4: Your Flight Is Cancelled Day-of Due to Temperature

• The airline is not obligated to rebook your pet on a cooler day automatically; you may need to rebook yourself.
• Ask about rebooking on the next available early-morning flight.
• If you are at the airport, ensure your pet has access to water, shade, and a cool space while you sort logistics.
• Keep your veterinarian's emergency number on hand and watch for signs of heat stress: excessive panting, drooling, lethargy, vomiting, or unsteadiness.

How to Rebook Before It Is Too Late

Waiting until the last minute dramatically increases the risk of a disrupted journey. Follow this timeline to protect your pet and your plans.

8 to 12 Weeks Before Travel

• Confirm that your airline still offers pet cargo service and review updated breed and temperature policies.
• Book the earliest morning flight available to minimize heat exposure.
• Obtain an IATA-compliant crate that meets your airline's specific size requirements.
• Schedule a veterinary visit for a health certificate (most airlines require one issued within 10 days of travel).

4 to 6 Weeks Before Travel

• If your route passes through an embargo station, rebook through an alternative hub now.
• Research ground transport companies as a backup. Look for USDA registration and IPATA membership.
• Confirm your pet's microchip is registered and your contact details are current.
• Review your pet insurance waiting periods to understand what is covered during travel.

1 to 2 Weeks Before Travel

• Call the airline cargo desk directly to reconfirm the booking and ask about the forecast policy.
• Acclimate your pet to the travel crate with short, positive sessions daily.
• Prepare a travel kit: water dish, absorbent bedding, a frozen water bottle (for gradual hydration), copies of health documents, and your emergency contacts.

24 to 48 Hours Before Travel

• Check the weather forecast for every airport on the itinerary.
• If temperatures are forecast above 85 °F at any point, call the airline immediately to discuss options.
• Have a ground transport backup or delayed departure plan ready.

Emergency Pet Travel Kit

Whether traveling by air or ground, every pet should travel with the following items readily accessible:

• Health certificate and vaccination records (originals and copies).
• Microchip documentation with current registration confirmation.
• Collapsible water bowl and bottled water.
• Frozen water bottle or ice pack wrapped in a cloth for cooling.
• Absorbent crate liner or pads.
• Photo of your pet on your phone and printed, in case of separation.
• Veterinarian emergency contact number and nearest emergency animal hospital at your destination.
• Leash and collar with ID tag (separate from the crate).
• Familiar blanket or toy to reduce stress.
• Any prescribed medications with dosing instructions written clearly.

For more on preparing your pet for seasonal care before travel, see our article on spring nail trimming and paw pad care for dogs, which covers paw protection that is especially relevant for hot tarmac exposure.

Ground Transport and Alternative Options

When cargo is not available, ground transport becomes the primary alternative. Professional pet transport companies operate climate-controlled vehicles and offer door-to-door service across the continental United States.

What to Look For in a Ground Transport Company

• USDA registration: All commercial animal transporters in the U.S. must be registered with the USDA under the Animal Welfare Act.
• IPATA membership: The International Pet and Animal Transportation Association sets professional standards and a code of ethics for members.
• Vehicle specifications: Ask about climate control, crate setups, rest stop schedules, and GPS tracking.
• Insurance and liability coverage: Confirm what happens if your pet is injured or becomes ill in transit.
• References and reviews: Request references from recent clients and check independent review platforms.

If you will be away and need to arrange pet care rather than transport, explore our guides on choosing a cat daycare with real enrichment or hiring a certified professional pet sitter.

Seasonal Maintenance: Monthly Travel Safety Tasks

• March and April: Research airline cargo policies for the upcoming season. Book summer travel now if cargo is needed. Schedule the vet visit for your health certificate.
• May: Embargoes begin at fixed stations. Confirm all bookings. Finalize backup plans.
• June through August: Peak embargo period. Expect day-of cancellations on southern and southwestern routes. Monitor forecasts obsessively. Ground transport demand is at its highest, so bookings may be limited.
• September: Embargoes typically end September 30, but late-season heat waves can still trigger day-of cancellations. Do not assume the embargo is lifted early.
• October: Most cargo programs resume normal operations. This is an excellent window for rescheduled travel.

Signs of Heat Stress in Pets During Travel

Every pet owner involved in summer travel should know how to recognize heat-related illness. Veterinary guidelines identify the following warning signs:

• Rapid, heavy panting or difficulty breathing.
• Excessive drooling or thick saliva.
• Bright red tongue and gums (progressing to pale or blue in severe cases).
• Vomiting or diarrhea.
• Stumbling, disorientation, or collapse.
• Elevated body temperature above 104 °F (40 °C).

If heat stress is suspected, move the animal to a cool area immediately, offer small amounts of cool (not ice-cold) water, apply cool wet towels to the neck and groin, and seek emergency veterinary care without delay. The ASPCA Animal Poison Control Center can be reached at (888) 426-4435 for any pet emergency consultation, and most emergency animal hospitals accept walk-ins for heat-related cases.

For a deeper understanding of emergency timelines in critical pet situations, see our article on bloat in dogs and the emergency timeline, which reinforces the importance of rapid response.

Printable Summary Checklist