Salt Lake City to West Yellowstone

What the Data Says About SLC to WYS

The Salt Lake City to West Yellowstone corridor (SLC → WYS) covers roughly 273 miles and is served by 1 carrier, based on Bureau of Transportation Statistics reporting. Across 1,229 flights in the dataset, this route posts a 89.7% on-time rate with an average delay of 64.7 minutes when flights run late. Over the most recent 24 months of BTS data, 1,138 flights were recorded on this pairing — 5 cancelled (0.4%) and 14 diverted (1.2%). 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 1,229 total flights analyzed, the 89.7% 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, Sep 2024 posted the best performance on this corridor at 96% on-time, while Jul 2024 came in at 73% on-time — a 24-point gap between best and worst recent month. For travelers evaluating the SLC to WYS route, the combination of a 89.7% on-time rate, 64.7-minute average delay, 0.4% recent cancellation rate, and 1 available carrier is the concrete summary of what BTS data shows about reliability on this pairing.