The AirBaltic co-pilot sentenced to six months in prison last week was seven times over the legal alcohol limit.
The 38-year old failed a breathalyser test before a flight from Oslo to Crete with around 100 passengers on board.
Two flight attendants received 45 and 60 days each after being found to be over the limit.
The flight’s 50-year old pilot, who was reported to be twice over the limit, will appear in court in September.
He could face two years in jail.
The convicted co-pilot reportedly drank two bottles of whisky, followed by beer, and was still drinking four hours before departure.
The four crew members were tested and arrested after a tipoff.