This article is flagged for review against current official sources. Confirm requirements directly with the relevant authority before relying on the guidance here.
BOAS Assessment Before Flying: What Owners Should Ask
A BOAS grade describes airway function. It is not an automatic certificate that a dog is fit for air travel.
Brachycephalic Obstructive Airway Syndrome (BOAS) can affect a flat-faced dog’s breathing, exercise tolerance and ability to cope with heat. An in-cabin booking does not remove the need for an individual veterinary assessment.
What does a respiratory grade mean?
The University of Cambridge functional grading scheme uses four grades, 0–3. Assessment considers respiratory signs before and after exercise. Grade 0 does not certify aviation fitness. A grade is one part of the clinical picture, alongside the animal’s other health conditions and the proposed journey.
Do not apply a canine grading scheme to cats as if it were a validated feline flight-clearance test. Flat-faced cats need a species-appropriate veterinary assessment. Endoscopy, anaesthesia, specialist testing or surgery are decisions for the treating veterinarian, not routine requirements for every travelling pet.
Discuss the whole journey with the vet
- Describe each flight sector, stop, ground transfer and expected arrival conditions.
- Report noisy or difficult breathing, exercise intolerance, disturbed sleep, previous collapse and any prior surgery.
- Ask whether the pet is suitable for the journey and whether further investigation or treatment is needed.
- If surgery is recommended, have the treating clinician determine recovery and reassessment before travel; there is no universal recovery period that guarantees flight fitness.
- Ask which documents the government and operating airline require, and disclose diagnosed airway problems to the travel team.
Medication and preparation
IATA discourages routine sedation for air transport. Medication decisions belong with the veterinarian and must be compatible with the operator’s rules. Do not give a sedative or a “natural” remedy based solely on a blog recommendation.
Plan an early consultation so there is time to change the itinerary or postpone travel if that is best for the animal. SKYE PETS reviews the proposed journey with the owner; a booking enquiry is not clinical clearance.
Reviewed 7 September 2026. This guide explains the main planning decisions; the applicable government conditions, permit and flight-specific instructions determine the documents and arrangements for your pet. Recheck them before booking and before departure.
Discuss your route with SKYE PETS. Include your departure country, destination, intended dates, species, breed, age, weight and recent travel history so we can assess the journey and current flight options.
Further Reading
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