Idaho Falls to Denver

What the Data Says About IDA to DEN

The Idaho Falls to Denver corridor (IDA → DEN) covers roughly 458 miles and is served by 3 carriers, based on Bureau of Transportation Statistics reporting. Across 6,836 flights in the dataset, this route posts a 82.4% on-time rate with an average delay of 98.8 minutes when flights run late. Over the most recent 24 months of BTS data, 2,974 flights were recorded on this pairing — 30 cancelled (1.0%) and 14 diverted (0.5%). Those baseline metrics tell you what to expect before you book.

Having 3 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 6,836 total flights analyzed, the 82.4% on-time figure is statistically meaningful rather than a small-sample fluke. The 98.8-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, Nov 2025 posted the best performance on this corridor at 91% on-time, while Jul 2025 came in at 60% on-time — a 31-point gap between best and worst recent month. For travelers evaluating the IDA to DEN route, the combination of a 82.4% on-time rate, 98.8-minute average delay, 1.0% recent cancellation rate, and 3 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.