1. Research Entry Requirements and Restrictions

Begin by checking the CDC and USDA regulations for pets entering the United States. Your pet will need:

• A valid rabies vaccination certificate
• A health certificate issued by a licensed vet within 10 days of travel
• A registered microchip

While Washington state typically aligns with federal rules, check with local authorities or your airline to confirm whether additional entry regulations apply when arriving in Seattle.

2. Consult Your Vet

Visit your vet to confirm your pet’s fitness to travel and to update any necessary vaccinations. Your vet must issue an official health certificate shortly before departure. Seattle’s climate and terrain may also require specific guidance on parasite control or seasonal allergens. If your pet has a history of travel anxiety, your vet may recommend natural calming aids or prescription options to make the journey more manageable.

3. Secure the Right Travel Crate

Your pet’s crate must comply with International Air Transport Association (IATA) guidelines. It should be:

• Sturdy, well-ventilated, and spacious enough for your pet to stand, turn, and lie down comfortably
• Consider adding absorbent padding or a familiar blanket for extra comfort
• Begin crate training early, using positive reinforcement to help your pet adjust to the space well before travel day

4. Understand Airline Policies

Each airline operating international flights to Seattle has specific pet travel policies. Consider:

• Cabin eligibility for small pets vs. cargo hold travel
• Breed restrictions, seasonal limitations, and documentation requirements

Contact your airline directly to confirm current rules and ensure your booking includes all necessary arrangements for your pet’s journey.

5. Sort Out the Paperwork

Rabies is MANDATORY in Texas and Florida and required when flying to all US destinations with American Airlines. Otherwise, we recommend having a rabies vaccination prior to travel, though it is not universally required.
The required documentation includes:

• A valid rabies vaccination certificate
• A health certificate
• Proof of microchip registration
• If your pet is travelling from or through a high-risk rabies country, additional documents—such as a titre test or CDC permit—may be required

Keep digital and printed versions of all documents, and organise them in a folder for quick access. PetAir UK will help ensure everything is complete and compliant before your departure.

6. Plan Your Travel Timetable

Seattle experiences four distinct seasons, with wet winters and warm summers. Plan your pet’s journey during milder months and avoid extreme temperatures that may affect cargo transport eligibility. Aim for:

• Early morning or late evening flights in warmer weather to keep your pet cool
• Allow extra time for final veterinary checks, crate preparation, airport check-in, and customs clearance on arrival

7. Consider Using a Specialist Pet Shipper

Relocating a pet internationally can be a logistical challenge, especially when navigating airport protocols, airline restrictions, and customs procedures. PetAir UK’s team is experienced in coordinating each stage of the journey, including:

• Crate handling
• Veterinary compliance
• Customs documentation

Their service is ideal for first-time relocators, busy professionals, or pets with complex medical or behavioural needs.

8. Prepare for Arrival in Seattle

After landing at Seattle-Tacoma International Airport, you’ll collect your pet from the airline’s designated cargo facility or oversized baggage area. Customs and USDA officials may inspect your documents, so have them ready.
Be sure to bring:

• Fresh water, a leash, and weather-appropriate gear for your pet
• Pre-arranged pet-friendly transport to your accommodation

Once home, offer a calm, secure area for your pet to rest and adjust to their new environment.

9. Alleviating Pet Stress and Anxiety

Help your pet acclimate to travel by introducing the crate early and maintaining a consistent daily routine. Include familiar items, such as:

• Favourite toys, bedding, or unwashed clothing in the crate to offer familiarity

After arrival, provide a calm environment and allow your pet to explore gradually. Speak to your vet before travel if your pet has a history of stress or separation anxiety, and develop a care plan tailored to their needs.

10. Settling into Life in Seattle

Seattle is a pet-friendly city, with numerous parks, greenways, and dog-friendly establishments. Popular spots include:

• Magnuson Park
• Golden Gardens
• Green Lake Trail

Register your pet with a local vet and ensure they are licensed with the City of Seattle. Be mindful of wet and muddy conditions during the rainy season and provide proper paw care after outdoor walks. With structure, daily activity, and positive reinforcement, your pet will quickly settle into their new home.