A Serbian student stopped with his mother at Heathrow Airport will be sentenced in February for planning terrorist activity in trouble-torn Syria.
David Souaan, 20, of Camden, north London was arrested on May 31 as he checked-in for a flight to his homeland.
He was convicted at the Old Bailey of preparing for acts of terrorism after police examined his mobile phone and laptop.
The investigation established Souann claimed to have been involved in fighting in Syria when he visited the region last December during his Christmas break from university.
He supported a number of terrorist organisations and vowed that he wanted to return to Syria.
Officers found images on his phone and computer of Souaan, apparently in Syria, holding a gun and donning a sinister jihadi-style disguise.
Commander Richard Walton, of the Met's Counter Terrorism Command (SO15), said: "Souaan had an active interest in Syria and was set on fighting there.
“I'd like to thank those around him that reported his change in behaviour and extremist views.
“By coming forward, we were able to prevent him travelling and engaging in terrorist activities."
Sentencing has been set for February 3.