Flying with Your Pet on Thai Smile Airways

OK hear me out — taking Nala on a Thai Smile flight was one of those moments where I realized how much easier pet travel gets when you know the rules upfront. Thai Smile Airways (WE) does allow pets in the cabin, which means your furry friend can travel right beside you instead of in cargo. That's a game-changer for anxious pups and cats. But there are specific requirements you absolutely need to nail, and I'm going to walk you through every single one.

Whether you're flying with a small dog, cat, or any other pet, Thai Smile has clear policies about carriers, health documentation, and advance booking. Let's break it down so you can travel with confidence.

Can Your Pet Fly in the Cabin?

Yes — Thai Smile allows pets in the cabin. This is huge because it means your pet stays with you throughout the flight instead of being separated in cargo. I always choose cabin travel with Nala when possible; she's calmer knowing I'm nearby, and I can monitor her comfort the entire time.

However, there are strict requirements:

  • Advance booking is mandatory. You must book your pet at least 24 hours before departure. Don't show up at the airport hoping to bring your pet along — Thai Smile limits the number of pets per flight, and you need prior arrangement.
  • One pet per passenger. Most airlines, including Thai Smile, allow one pet carrier per passenger in the cabin.
  • Your pet must be at least 8 weeks old and fully weaned before cabin travel.
  • Brachycephalic (snub-nosed) breeds are restricted. This includes Bulldogs, Pugs, Boxers, Boston Terriers, Shih Tzus, and many others. If your breed is on the restricted list, you'll need to confirm directly with Thai Smile — some airlines make exceptions, but don't count on it.

Carrier Requirements for Cabin Travel

Trust me on this one — getting the carrier right is non-negotiable. Thai Smile has specific dimensions, and your carrier must fit under the seat in front of you.

Cabin Carrier Dimensions:

  • Maximum length: 50 cm (about 20 inches)
  • Maximum width: 40 cm (about 16 inches)
  • Maximum height: 20 cm (about 8 inches)
  • Combined weight (pet + carrier): 7 kg (about 15 lbs)

These are tight specs. When I flew with Nala, I had to measure twice. The carrier needs to slide under the seat comfortably — if it doesn't fit, you won't be allowed to board.

Carrier Type: Thai Smile requires soft-sided carriers for cabin travel. Hard-sided crates won't work because they're too rigid to fit under the seat. Soft-sided carriers are flexible, collapsible, and designed exactly for this purpose.

Essential Features:

  • Ventilation: Your carrier must have mesh sides or adequate ventilation openings. Your pet needs to breathe, and the airline needs to see your pet during boarding checks.
  • Absorbent liner: Line the bottom with an absorbent mat or pad. Accidents happen during flights — this protects both your pet and the airline seat.

Checked Baggage and Cargo Options

If your pet is too large for cabin travel, Thai Smile allows pets in checked baggage or cargo. However, this is a different ballgame with stricter requirements.

Checked Baggage Travel:

  • Your pet must be at least 10 weeks old (older than cabin travel).
  • Hard-sided, IATA-compliant crates are required — no soft-sided carriers.
  • The crate must have an attached water bowl that can be filled from outside.
  • Ventilation openings on at least three sides are mandatory per IATA regulations.
  • An absorbent liner is required inside the crate.
  • Live Animals labels with orientation arrows must be clearly displayed on the crate.
  • Temperature restrictions apply: Thai Smile won't transport pets if tarmac temperatures exceed 29.4°C (85°F) or drop below -6.7°C (20°F). If you're traveling to hot destinations, book early morning or evening flights.

Cargo Travel: Thai Smile allows cargo pet transport, but it's not recommended unless absolutely necessary. Your pet travels in a pressurized cargo hold, separated from you. The same carrier, documentation, and temperature restrictions apply as checked baggage.

Health Certificates & Documentation

This is the one thing that will get you denied at the airport if you skip it: a vet-issued health certificate is required. I learned this the hard way on an early trip — always get it, even if the airline's website doesn't explicitly mention it.

Health Certificate Rules:

  • Must be issued by a licensed veterinarian within 10 days of your departure date.
  • Get it as close to your travel date as possible — don't get it too early.
  • The certificate confirms your pet is healthy and fit to fly.
  • Keep a copy with you at check-in and have it ready for inspection.

Schedule your vet appointment at least 2 weeks before your flight to ensure availability. Your vet will examine your pet, verify vaccinations (especially rabies), and issue the certificate on the spot.

Breed Restrictions: The Brachycephalic Ban

If you have a snub-nosed breed, this is critical. Thai Smile restricts brachycephalic breeds due to respiratory risks during flight. The restricted list includes:

  • Bulldogs (all types: English, French, American)
  • Pugs (all types)
  • Boxers
  • Boston Terriers
  • Shih Tzus
  • Pekingese
  • Chow Chows
  • Japanese Chin
  • Mastiffs (all types)
  • Shar Peis
  • Staffordshire Bull Terriers
  • Cavalier King Charles Spaniels
  • And many others — check the full list with Thai Smile directly

If your breed is on this list, contact Thai Smile before booking. Some airlines make rare exceptions with vet documentation, but don't count on it. Read our brachycephalic breed flying guide for alternatives.

Important Restrictions & Rules

No Sedation: IATA regulations prohibit sedating your pet during air travel. A sedated animal can't maintain balance or respond to emergencies. Don't do it, even if you think it will help your anxious pet. Instead, practice carrier acclimation and calming techniques before the flight.

Pregnant Animals: Thai Smile won't accept visibly pregnant animals. If your pet is pregnant, confirm directly with the airline before booking.

Animals in Heat: We're still verifying Thai Smile's specific policy on this — contact them directly to confirm.

Key Numbers at a Glance

  • Cabin pet fee: Appears to be free (we're verifying exact details — confirm with Thai Smile)
  • Advance booking required: 24 hours minimum
  • Cabin carrier max dimensions: 50 cm L × 40 cm W × 20 cm H
  • Cabin carrier max weight: 7 kg (pet + carrier combined)
  • Minimum pet age (cabin): 8 weeks
  • Minimum pet age (checked/cargo): 10 weeks
  • Health certificate validity: 10 days from issue date
  • Heat embargo: 29.4°C (85°F) — no transport above this temperature
  • Cold embargo: -6.7°C (20°F) — no transport below this temperature
  • Max pets per passenger (cabin): 1 carrier

What You Need to Do

At least 4 weeks before travel:

  • Check if your pet's breed is on the brachycephalic restricted list. Contact Thai Smile if unsure.
  • Measure your pet and research soft-sided carriers that fit Thai Smile's dimensions (50 × 40 × 20 cm).
  • Purchase or borrow a compliant carrier and let your pet acclimate to it gradually.

2 weeks before travel:

  • Schedule a vet appointment for a health certificate.
  • Verify any destination-specific pet import requirements (some countries have additional rules).

10 days before travel:

  • Visit your vet and obtain the health certificate. Keep it in a safe, accessible place.

24+ hours before travel:

  • Contact Thai Smile to pre-book your pet. Provide your flight details, pet name, breed, age, and weight.
  • Confirm the carrier meets their specifications.
  • Ask about any additional documentation or fees.

Day of travel:

  • Arrive early — pet check-in may take extra time.
  • Have your health certificate ready for inspection.
  • Ensure your carrier has an absorbent liner and is properly ventilated.
  • Keep your pet calm and hydrated before boarding.

Pro Tips from My Travels with Nala

Practice carrier time before your flight. Nala spent weeks getting comfortable in her soft-sided carrier before we flew. On flight day, she was calm because the carrier felt familiar, not scary.

Bring a collapsible water bowl and offer water during layovers. Airlines don't always have water available in the cabin, and dehydration stresses pets during flights.

Avoid feeding your pet a large meal 2-3 hours before boarding. A light snack is fine, but a full stomach can cause nausea during takeoff and landing.

If you're flying to a hot destination, book early morning or late evening flights to avoid peak tarmac heat. Thai Smile won't transport pets if it's too hot on the tarmac.

Still Have Questions?

We're still verifying some details about Thai Smile's pet policies — specifically exact fees, specific embargoed routes, and their stance on animals in heat. Contact Thai Smile directly before booking to confirm all details. Their customer service team can answer questions about your specific pet and route.

For comprehensive pet travel planning, check out our pet travel documents checklist and flying with a dog guide.

Get your free personalized travel plan from Pawgo — we'll help you navigate every step of flying with your pet.

Data auto-verified from official airline sources. Last updated: January 2025. Always confirm current policies directly with Thai Smile Airways before booking.

Auto-generated from verified data · Last updated: April 23, 2026