Some 106 passengers were stranded in Stuttgart after the co-pilot of the Portugalia airline was detained in a state of alcoholic intoxication, Stuttgarter Nachrichten reported.
The 40-year old was found drunk in the cockpit just before takeoff, German law enforcement services said Saturday.
Following his arrest, Portugalia, a subsidiary of the national carrier TAP, canceled the flight from Stuttgart to Lisbon and all passengers will probably have to wait until Monday for a replacement flight.
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The incident occurred on Friday evening after an airport officer spotted the man "reeking of alcohol and walking unsteadily" and informed air traffic control and the police.
The co-pilot's flying license was immediately suspended.