Route · WYS → SLC · 2020–2025 BTS data
West Yellowstone to Salt Lake City
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), WYS to SLC (West Yellowstone to Salt Lake City) ranks #4326 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 90.2%
- On-time
- +11.2 pts
- vs US avg
- 139 min
- Delay when late
- 1,229
- Flights
- #4326 of 4927
- Corpus placement
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.
WYS on-time profileSLC - Salt Lake City
Full on-time, delay-cause, and seasonal performance for Salt Lake City, UT.
SLC on-time profileCompare the two airports
See WYS and SLC side by side on delays, cancellations, and reliability.
Compare WYS vs SLCSimilar routes
Other BTS-tracked routes with comparable performance or trip length to WYS–SLC.
Routes with a similar on-time rate
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.
On the multi-year calendar, WYS–SLC peaks in September at 93.6% on-time while July carries the heaviest traffic (~54 flights per month) ; the softest month is May at 84.8%, a 8.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does WYS to SLC rank among US routes by traffic? ▼
How often are flights delayed from WYS to SLC? ▼
What is the cancellation rate for WYS to SLC? ▼
How far is the flight from WYS to SLC? ▼
When is the best time to fly from WYS to SLC? ▼
Airports on this route
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.
Using WYS–SLC data
WYS–SLC runs 11.2 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare WYS and SLC airport profiles: delay causes and top routes differ even on the same corridor. WYS airport
- If your dates flex, September (93.6% on-time) beats May (84.8%) on this corridor. Seasonal chart
- 4 other routes post a similar 90.2% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
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.