The Sri Lanka A cricketer will also receive a further warning by the Cricket Board as the SLC executive committee decided a disciplinary action following a committee report.
Rambukwella, in an inebriated state, had tried to open a British Airways flight door while flying back from the West Indies end of June.
He however had defended himself by saying that he was a natural sleep walker.
Team manager Jayantha Seneviratne had claimed that Rambukwella, whose father is a government minister, was not able to find the toilet door as the lights had been dimmed.