Frontier Airlines Expands in Spirit Airlines’ Key Markets with 20 New RoutesBusiness PenAugust 26, 2025 August 26, 2025 [stock_market_widget type=”card” template=”basic2″ assets=”ULCC” realtime=”true” api=”yahoo-finance”] Frontier Airlines (NASDAQ: ULCC) is making a bold move to attract customers from its budget airline rival Spirit Airlines...