The lifelike dolls have become so popular that regional carrier Thai Smile Airways, a subsidiary of Thailand's flag carrier Thai Airways, recently instructed its staff to allow passengers to purchase a seat for their Luk Thep dolls.
Spirit dolls
Luk Thep are believed to possess a child's spirit and bring good fortune, thus many Thais have taken to treating them like real kids.
The internal Thai Smile memo, being circulated among Thai media, says the dolls have to be buckled up like human passengers and will be served snacks and drinks.
As with real children, they're barred from sitting in exit rows.
Don't have a ticket for your doll?
It'll be treated as carry-on luggage and stowed during takeoff and landing.