Aspen to San Francisco

What the Data Says About ASE to SFO

The Aspen to San Francisco corridor (ASE → SFO) covers roughly 848 miles and is served by 1 carrier, based on Bureau of Transportation Statistics reporting. Across 1,521 flights in the dataset, this route posts a 72.1% on-time rate with an average delay of 107.4 minutes when flights run late. Over the most recent 24 months of BTS data, 1,133 flights were recorded on this pairing — 101 cancelled (8.9%) and 5 diverted (0.4%). Those baseline metrics tell you what to expect before you book.

Having 1 carrier on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 1,521 total flights analyzed, the 72.1% on-time figure is statistically meaningful rather than a small-sample fluke. The 107.4-minute average delay applies only to flights that actually ran late, so it is not the average wait across all departures — the majority of flights on this route depart on time under the BTS definition of a delay (15+ minutes past schedule).

Looking at recent months, Jan 2022 posted the best performance on this corridor at 87% on-time, while Mar 2024 came in at 39% on-time — a 48-point gap between best and worst recent month. For travelers evaluating the ASE to SFO route, the combination of a 72.1% on-time rate, 107.4-minute average delay, 8.9% recent cancellation rate, and 1 available carrier is the concrete summary of what BTS data shows about reliability on this pairing.