"London, Nairobi, Ethiopia, Thailand, Vietnam, Laos, Cambodia, and China. "
In general, it is not recommended that you travel internationally with a potentially illegal substance. Even though CBD oil may be legal at your point of departure, you will be responsible for obeying local laws when you land. Even flying within the US is a grey area: CBD may be legal where you take off and land, but when you are in the air, you are governed by federal law – and CBD is still considered a controlled substance on a federal level.
Kevin P.