Frontier Airlines (F9) flights & route network
221 routes · 83 destinations · 5 hub airports across 5 countrys.
Figures computed from the public OpenFlights datasetData source: OpenFlights routes.dat
Denver is the capital of Colorado, and one of its largest cities, with a population of 715,522 .
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Frontier Airlines hub airports
Airports ranked by the number of Frontier Airlines routes originating from each IATA code. A higher count indicates a stronger hub — more nonstop destinations available from that airport.
Routes operated by F9
Showing the 50 longest Frontier Airlines routes parsed from the OpenFlights routes dataset. Click any route for live fare comparison.
F9 route network
Every figure below is computed live from the OpenFlights routes dataset at the time of page render. No prices, no fabricated carrier names — only the airline codes stored verbatim in thedirectCarriersJSON field on each FlightRoute row.
All countries served by F9
Ranked by the number of Frontier Airlines routes arriving in each destination country. The leading market is where the airline concentrates most of its international capacity.
About flying with Frontier Airlines
Frontier Airlines (F9) operates 221 scheduled flight routes parsed from the OpenFlights public routes dataset.
From its primary hub at DEN (Denver, United States) the airline flies 65 nonstop routes, with 4 additional airports serving as regional connection points across the network.
The longest nonstop route operated by Frontier Airlines is Denver (DEN) to San Jose (SJO), covering 2,416 great-circle miles and averaging about 45m of flight time. Its shortest scheduled route — Alliance (AIA) to Chadron (CDR) — covers just 56 miles.
Across the full network, Frontier Airlines serves 5 countrys; the most-served destination market is United States with 200 inbound routes.
How to find the best Frontier Airlines fares
Booking out of DEN is usually the strongest fare play: Frontier Airlines concentrates 65 of its routess from Denver, and higher route density at a hub means more head-to-head competition — both from other Frontier Airlines departures and from rival carriers serving overlapping city pairs. Use the Kayak search box above with origin set to DEN to see the airline's full departure board at a glance.
All route, hub, destination and country figures are computed directly from the OpenFlights public-domain routes dataset(openflights.org/data.php)— specifically the directCarriers JSON field on every FlightRoute row, where each airline code (e.g. F9) is parsed from the OpenFlightsroutes.dat airline identifier column. Carrier names come from the companion OpenFlights airlines.dat dataset. No prices or fare estimates appear on this page — those values fluctuate continuously across 100+ booking sites and are fetched live via Kayak at search time.