Frontier Airlines Nonstop Flights from St. Louis: 9 Destinations

2 international and 7 domestic destinations without a stop from STL

Every destination Frontier Airlines serves nonstop from St. Louis, United States, from published airline schedules as of 30 August 2026. Seasonal and not-yet-launched services are marked; connections are not listed. Frontier Airlines sells economy only — no business or first class cabin.