A codeshare agreement is an aviation business arrangement where two or more airlines share the same flight. A seat can be purchased on Lao Airlines but is actually operated by a cooperating airline under a different flight number or code.
Currently, Lao Airlines has codeshare flights with Thai Airways (TG) and Vietnam Airlines (VN).
Codeshare flights with Thai Airways (TG)
Codeshare flights with Vietnam Airlines (VN)