Most dogs don't get denied for temperament. They get denied for a crate two inches too small, or paperwork that doesn't match the crate label. Fix those and the flight is paperwork + a calm drive to the airport. Here is the whole picture for departures from Bangkok.
1. Size the crate by IATA rules — measure the dog, not the breed average
IATA's live-animal regulations size the crate from the dog's body: length nose to tail-base (A), height standing (D), and width across shoulders (B). The internal crate dimensions should be: length = A + half of B, width = B × 2, height = D + padding clearance. When in doubt, go one size up — airlines measure the label and the dog through the mesh.
| Crate size | Typical dog | Internal size (cm) |
|---|---|---|
| M | Beagle, Corgi | 71 × 53 × 53 |
| L | Husky, Labrador | 81 × 57 × 59 |
| XL | Golden Retriever, German Shepherd | 91 × 64 × 66 |
| XXL | Great Dane | 102 × 74 × 76 |
2. Which airlines accept dogs from Bangkok
Bangkok Airways flies pets in the cabin hold on most domestic routes (Samui included) with advance booking — the friendliest option for Thai island hops. Thai Airways accepts pets as manifested cargo or excess baggage depending on route and aircraft. Vietjet Thailand and Thai Lion Air generally do not carry pets — don't build a plan on them. For international relocation, pets usually fly as manifested cargo through an agent, which changes the paperwork but not the crate rules.
3. The paperwork that actually gets checked
For domestic Thailand: a rabies vaccination at least 21 days old, and a health certificate (ร.1/ห.1) issued by a licensed vet within 7 days of travel. For exports: an international health certificate endorsed by Thailand's DLP (Department of Livestock Development), plus whatever the destination country demands — this is the part your pet shipper owns. Keep a copy of the health certificate taped to the crate: the ground handlers read it before anyone at the desk does.
4. Water, feeding and the two golden hours
No food in the 4 hours before drop-off (a full stomach plus stress equals a sick dog), water available until loading, and a familiar-smelling item inside the crate. Freeze a water bowl the night before so it melts slowly in the hold. Arrive at the airline's pet desk 3 hours before an international flight, 2 hours domestic.
5. The leg nobody plans: getting the crate to the airport
An XL crate does not fit in a regular taxi boot, and folding seats in a ride-hail car is a coin toss at 4 AM. This is the part Bangkok Ride handles daily: vans that fit L–XXL crates, drivers who carry the crate to the desk, and timing built around the pet's check-in window. Book a airport pet transfer and we match the vehicle to the crate — fixed price, no surge at 4 AM.