Historical on-time performance
West Yellowstone to Salt Lake City
273 miData through Dec 2025Source: US DOT · BTS
Flights on WYS–SLC arrive on time 92% of the time over the last 12 months.
On-time rate92%arrived within 15 min
p90 delay5 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 134 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time92%Medianon timep905 minCancel0.0%Flights134
Why flights run late
Delay causes
- Airline21%
- Weather70%
- Air traffic (NAS)9%
- Late aircraft0%
- Security0%
Most delay minutes here are attributed to Weather.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly WYS → SLC
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 87% to 92% on time.
- Middays92% on time · p90 5 min · 356 flights
- Evenings89% on time · p90 on time · 99 flights · limited
- Afternoons87% on time · p90 20 min · 230 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 85% to 94% on time.
- Fridays94% on time · p90 on time · 105 flights · limited
- Tuesdays92% on time · p90 5 min · 76 flights · limited
- Saturdays91% on time · p90 10 min · 117 flights · limited
- Sundays91% on time · p90 10 min · 106 flights · limited
- Wednesdays89% on time · p90 15 min · 73 flights · limited
- Mondays87% on time · p90 15 min · 104 flights · limited
- Thursdays85% on time · p90 15 min · 104 flights · limited
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