what terminal does frontier use at o'hare
At the Rotunda, between T2 & T3 is a Yoga Room. Terminal 3 (T3) of O'Hare, with Concourses G, H, K & L, serves Air Berlin (departures only), Air Choice One, Alaska, American (domestic & int'l departures), Frontier, Iberia (departures), Japan Airlines JAL (departures), JetBlue, Spirit, & Virgin America.