Route · WYS → SLC · 2020–2025 BTS data
West Yellowstone to Salt Lake City
The WYS–SLC corridor (West Yellowstone, MT → Salt Lake City, UT) runs ahead of the national average, served by 1 carrier across roughly 273 miles.
Data updated 2026-06-13
- 90.2%
- On-time
- +11.2 pts
- vs US avg
- 139 min
- Delay when late
- 1,229
- Flights
Cancelled
0.6%
Best Month
Sep 2022 96%
Worst Month
Jul 2024 79%
Distance
273 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Sep 2025 | 31 | 0 | 0 | 0 | OO |
| Aug 2025 | 36 | 4 | 0 | 0 | OO |
| Jul 2025 | 36 | 5 | 0 | 0 | OO |
| Jun 2025 | 31 | 2 | 0 | 0 | OO |
| Sep 2024 | 52 | 3 | 1 | 0 | OO |
| Aug 2024 | 62 | 5 | 0 | 0 | OO |
| Jul 2024 | 62 | 13 | 0 | 0 | OO |
| Jun 2024 | 52 | 8 | 3 | 0 | OO |
| May 2024 | 34 | 6 | 0 | 0 | OO |
| Sep 2023 | 52 | 3 | 1 | 0 | OO |
| Aug 2023 | 52 | 5 | 1 | 0 | OO |
| Jul 2023 | 54 | 3 | 0 | 0 | OO |
| Jun 2023 | 52 | 5 | 1 | 0 | OO |
| Sep 2022 | 52 | 2 | 0 | 0 | OO |
| Aug 2022 | 52 | 6 | 0 | 0 | OO |
| Jul 2022 | 54 | 3 | 0 | 1 | OO |
| Jun 2022 | 47 | 6 | 0 | 0 | OO |
| Sep 2021 | 35 | 1 | 0 | 0 | OO |
| Aug 2021 | 53 | 4 | 0 | 1 | OO |
| Jul 2021 | 54 | 5 | 0 | 0 | OO |
| Jun 2021 | 52 | 3 | 0 | 0 | OO |
| May 2021 | 32 | 4 | 0 | 1 | OO |
| Sep 2020 | 45 | 8 | 0 | 0 | OO |
| Aug 2020 | 56 | 4 | 0 | 0 | OO |
Cancellation Rate
0.6%
7 of 1,138 flights
Diversion Rate
0.3%
3 of 1,138 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
WYS - West Yellowstone
Full on-time, delay-cause, and seasonal performance for West Yellowstone, MT.
Origin airport →SLC - Salt Lake City
Full on-time, delay-cause, and seasonal performance for Salt Lake City, UT.
Destination airport →Compare the two airports
See WYS and SLC side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to WYS–SLC.
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What the Data Says About WYS to SLC
West Yellowstone to Salt Lake City (WYS to SLC) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 90.2% on-time rate across 1,229 flights, with delays that do happen averaging 139.4 minutes. The corridor runs roughly 273 miles and is served by 1 carrier. Over the most recent 24 months, 7 of 1,138 flights were cancelled (0.6%) and 3 diverted (0.3%).
The monthly split is wide on this route: Sep 2022 posted the strongest performance at 96% on-time, while Jul 2024 came in at just 79% - a 17-point swing worth factoring into travel timing.
Frequently Asked Questions
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.