Chicago O'Hare International Airport
Airport code: ORD
O'Hare is one of the busiest airport in the world by number of takeoffs and landings and in number of passengers. It has four numbered passenger terminals with nine lettered concourses and a total of 182 gates.
Check-in time: 3.5 hours before departure. Check-in closes 1 hour before departure for passengers with bags.
Air France / KLM lounge (terminal 5)