Summer Heat Embargoes and New EU Pet Travel Rules: What You Need to Know Before You Move

Every summer, pet owners planning international relocations face the same unwelcome surprise: their carefully scheduled move hits a wall because of extreme heat. Summer heat embargoes are one of the most common disruptions in pet travel — and they catch even the most organized pet owners off guard.

Here's what you need to know, including the latest EU rule changes that may affect your pet's journey.

What Is a Summer Heat Embargo?

A heat embargo is a temporary restriction imposed by airlines on live animal transport when ground temperatures exceed safe thresholds. Most major carriers will not accept pets in cargo when temperatures at the origin, layover, or destination airport reach the low-to-mid 80s°F (around 27–29°C) — and some airlines draw the line even lower.

These policies exist for one reason: to keep your pet safe. Cargo holds are not climate-controlled the same way passenger cabins are, and high ambient temperatures can escalate quickly into dangerous conditions for animals in transit. At Starwood Pet Travel, we take this seriously — pet safety is never something we're willing to compromise on, and we work proactively with our clients to plan around these restrictions before they become a problem.

When Do Heat Embargoes Typically Apply?

Embargoes are most common between May and September in the Northern Hemisphere, though they can extend into October depending on the region. They are not always announced far in advance — an embargo can be triggered by a single day of unexpected heat at a connecting hub, which is why flexibility in your travel timeline matters.

Which Departure Points Work Best for Summer Pet Travel?

For US-based moves, the airports that tend to work best during summer are Los Angeles, Seattle, and San Francisco — their coastal climates make them the most reliable departure points during peak heat months.

The Northeast and Midwest present consistent challenges in summer, with heat and humidity frequently triggering embargo thresholds across major hubs in those regions. Middle Eastern connecting hubs including Dubai, Doha, and Abu Dhabi are also heavily affected, as are Southeast Asian transit points during monsoon season and Southern European and Mediterranean destinations at the height of summer.

Route planning is one of the most important tools we have for keeping summer moves on track — and in many cases, adjusting your departure city or connection point makes all the difference.

A Special Note on Snub-Nosed (Brachycephalic) Breeds

If you have a snub-nosed dog or cat — think French Bulldogs, Bulldogs, Pugs, Persian cats, Himalayans, or Boston Terriers — heat embargoes are an even more critical concern for you.

Brachycephalic breeds have compressed airways that make it harder for them to regulate body temperature through panting. In warm or humid conditions, they are at significantly higher risk of heat stroke and respiratory distress than other breeds. Because of this, many airlines impose stricter restrictions or outright bans on brachycephalic breeds traveling as cargo — and some won't accept them at all during summer months, regardless of the temperature on a given day.

If you have a snub-nosed pet, it's essential to plan well ahead, understand your airline's breed-specific policies, and work with an experienced pet relocation specialist who knows which routes and carriers offer the safest options for your animal.

New EU Rules: What's Changing for Pet Travel to Europe

A significant regulatory change is now in effect for pets traveling to the European Union — and it's one that will impact how moves are booked and documented.

A significant regulatory change is now in effect for pets traveling to or through the European Union — and its reach extends well beyond EU-destination moves.

The EU now requires a commercial health certificate for all dogs, cats, and ferrets traveling alone. This means that unless the owner is on the same flight as their pet, the move will be classified as a commercial shipment — regardless of which airline is used.

This is a meaningful shift from previous requirements, where pets could travel within five days of their owner and still qualify as non-commercial. That window is no longer sufficient under the new rule.

What this means practically:

• If you are not booked on the same flight as your pet, a commercial certificate is required
• A commercial certificate is valid for only two days from the time of the vet visit to departure — compared to a non-commercial certificate, which depending on the destination country is typically valid for 7 to 10 days. This significantly compresses the preparation and booking window
• This rule applies not only to moves terminating in the EU, but to any move that transits through Amsterdam (AMS) or Frankfurt (FRA) — two of the most commonly used connecting hubs for international pet travel worldwide
• That means moves to Asia, South Africa, and other non-EU destinations can be affected if the routing passes through either of those airports
• The change is in effect now, with no grace period
• Commercial certification adds complexity to the booking and USDA endorsement process and requires additional lead time
• Because of the validity of a commercial health certificate, we are limited on the days we can fly. Usually the health certificate appointment needs to be don on a Monday and a flight on a Wednesday to avoid weekend departures and arrivals

If your pet's move touches AMS or FRA at any point — or terminates anywhere in the EU — it is critical to flag this early in your planning process. The certificate type required will affect your entire logistics chain, from vet appointment scheduling to flight booking to USDA filing.

At Starwood, our team is already navigating this change on behalf of our clients. If you have a move in progress or coming up that involves EU routing, reach out to us directly so we can walk you through what's required.

How to Plan Around Summer Heat Embargoes

The good news: heat embargoes are manageable with the right planning. Here's how to set your move up for success:

• Book early and build flexibility into your timeline. Summer is the busiest and most unpredictable season for pet travel. The earlier you engage a pet relocation specialist, the more routing options you'll have.

• Consider early morning or overnight flights. Ground temperatures are lowest in the early morning hours. Flights that depart at dawn often avoid triggering embargo thresholds that a midday departure would hit.

• Explore alternative routing. Sometimes avoiding a single hot hub — swapping a Miami connection for a New York one, for example — is enough to get your pet moving safely.

• Know your breed's specific restrictions. If you have a brachycephalic breed, ask specifically about breed policies, not just temperature policies. They're often separate.

• Stay in close communication with your relocation team. Conditions can change in the days before travel. A specialist monitoring your route can flag issues before they become last-minute emergencies.

Bottom Line

Summer pet travel requires extra preparation, but it's absolutely manageable with the right support. At Starwood Pet Travel, we monitor airline embargo policies, breed restrictions, and destination-country requirements continuously — so your pet's move is planned around the safest possible window, not just the most convenient one.

If you're planning a summer relocation, reach out to our team early. The more lead time we have, the more options we have to get your pet where they're going — safely.