Around 4000 supporters were leaving Glasgow Airport on flights early this morning, with hundreds more flying from Prestwick.
The Catalan capital's streets will be awash with green and white during the next 24 hours as fans soak up the atmosphere ahead of the game at the famous Nou Camp stadium.
With Messi, Xavi, Iniesta and team mates recognised as one of the greatest ever club sides, the odds are stacked against Celtic claiming a victory.
But spirits were high at Glasgow Airport today among the travelling support ahead of tonight's game.
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