If you’re wondering What Terminal is Frontier Airlines at ORD, Frontier Airlines operates from Terminal 5 at Chicago O’Hare International Airport. Terminal 5 offers modern facilities, easy check-in, and efficient security screening for a hassle-free travel experience. Passengers flying Frontier from ORD enjoy convenient access to baggage claim, boarding gates, and various dining and s... https://nearterminal.com/frontier-airlines/ord-terminal-chicago-ohare-international-airport/