At Louis Armstrong New Orleans International Airport (MSY), Frontier Airlines is based in Concourse B. If you're wondering What Terminal is Frontier Airlines at MSY , it's Concourse B, which is noted for its modern facilities and handy passenger services like food, shopping, and comfy seating places. Concourse B is conveniently accessible to travelers via the main terminal, which has effective security checkpoints and conspicuous signage. The departures level is where Frontier's check-in desks are situated, guaranteeing a simple and easy boarding procedure. At MSY, Frontier Airlines offers a flawless travel experience whether you're traveling for business or pleasure.