Salt Lake City to Idaho Falls

What the Data Says About SLC to IDA

The Salt Lake City to Idaho Falls corridor (SLC → IDA) covers roughly 188 miles and is served by 3 carriers, based on Bureau of Transportation Statistics reporting. Across 7,153 flights in the dataset, this route posts a 89.6% on-time rate with an average delay of 77.3 minutes when flights run late. Over the most recent 24 months of BTS data, 2,204 flights were recorded on this pairing — 5 cancelled (0.2%) and 2 diverted (0.1%). 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 7,153 total flights analyzed, the 89.6% on-time figure is statistically meaningful rather than a small-sample fluke. The 77.3-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, Oct 2024 posted the best performance on this corridor at 99% on-time, while Jan 2024 came in at 78% on-time — a 21-point gap between best and worst recent month. For travelers evaluating the SLC to IDA route, the combination of a 89.6% on-time rate, 77.3-minute average delay, 0.2% recent cancellation rate, and 3 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.