The international airport in Bangkok is always a madhouse.
Despite years of service, they still have not figured out a way to move millions of passengers through the airport efficiently.
Nothing worse after a long international flight than arriving at the airport and having to queue up in immigration lines and baggage for hours.
It is no better for departures. International counters only open 3 hours before flights, and still have to pass through the counter and security.
Check international arrivals and departures HERE