Paris Charles de Gaulle (CDG) is one of the busiest and most complex airports in the world, so timing is critical. For domestic or European flights within the Schengen Area, you should arrive at least 2 hours before departure. However, for international long-haul flights—especially those heading to the US, Canada, or Asia—the standard recommendation is at least 3 to 3.5 hours. CDG is famous for its long walking distances between gates and potentially slow "PAF" (Passport Control) lines. If you are traveling during peak French holiday periods (July, August, or late December), adding an extra 30 minutes is a wise move. Additionally, if you need to process a VAT tax refund for luxury shopping, you should arrive even earlier, as the "Détaxe" kiosks can have significant queues that must be cleared before you check your luggage.