Frontier Airlines

What the Data Says About Frontier Airlines

Across 968,030 flights reported to the Bureau of Transportation Statistics between 2020 and 2025, Frontier Airlines (F9) posted a 73.7% on-time rate, with 255,075 delayed departures and 23,192 cancellations. The carrier's average delay when flights run late is 80.3 minutes, and its cancellation rate of 2.40% sits alongside an overall delay rate of 26.3%. Those baseline numbers frame every comparison you can make with other carriers in the BTS dataset.

Digging into causes, Late Aircraft drives the biggest share of minutes lost, with Late Aircraft accounting for 48.3% of delay time and Carrier contributing 29.7%. Weather, often blamed informally, represents 2.5% of total delay minutes, while National Aviation System constraints such as air traffic control and airspace congestion make up 19.5%. Security delays remain the smallest bucket at 0.0%. Taken together, operational and scheduling factors outweigh weather as the dominant driver of Frontier Airlines delays.

Seasonality matters too. Recent monthly data shows February 2024 as the best period for Frontier Airlines with a 80% on-time rate, while June 2025 was the roughest at 63% on-time, a spread of 17 percentage points between best and worst month. For passengers choosing between carriers, the combination of a 73.7% on-time rate, 80.3-minute average delay, and 2.40% cancellation rate is the clearest summary of what to expect on Frontier Airlines flights based on BTS reporting.