Salt Lake City to Sun Valley/Hailey/Ketchum

What the Data Says About SLC to SUN

The Salt Lake City to Sun Valley/Hailey/Ketchum corridor (SLC → SUN) covers roughly 222 miles and is served by 1 carrier, based on Bureau of Transportation Statistics reporting. Across 5,318 flights in the dataset, this route posts a 91.9% on-time rate with an average delay of 64.7 minutes when flights run late. Over the most recent 24 months of BTS data, 1,858 flights were recorded on this pairing — 11 cancelled (0.6%) and 15 diverted (0.8%). 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 5,318 total flights analyzed, the 91.9% on-time figure is statistically meaningful rather than a small-sample fluke. The 64.7-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, May 2024 posted the best performance on this corridor at 98% on-time, while Jan 2024 came in at 78% on-time — a 20-point gap between best and worst recent month. For travelers evaluating the SLC to SUN route, the combination of a 91.9% on-time rate, 64.7-minute average delay, 0.6% recent cancellation rate, and 1 available carrier is the concrete summary of what BTS data shows about reliability on this pairing.