Historical on-time performance
Butte to Salt Lake City
358 miData through May 2026Source: US DOT · BTS
Flights on BTM–SLC arrive on time 95% of the time over the last 12 months.
On-time rate95%arrived within 15 min
p90 delayon time1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights
based on 275 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time95%Medianon timep90on timeCancel0.4%Flights275
Why flights run late
Delay causes
- Airline80%
- Weather17%
- Air traffic (NAS)3%
- Late aircraft0%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather100%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 1 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly BTM → SLC
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 98% on time.
- Mornings98% on time · p90 on time · 154 flights · limited
- Evenings95% on time · p90 on time · 935 flights
- Middays93% on time · p90 5 min · 463 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 92% to 96% on time.
- Fridays96% on time · p90 on time · 240 flights
- Mondays96% on time · p90 on time · 237 flights
- Sundays95% on time · p90 on time · 239 flights
- Wednesdays95% on time · p90 on time · 237 flights
- Tuesdays94% on time · p90 on time · 170 flights · limited
- Saturdays93% on time · p90 on time · 223 flights
- Thursdays92% on time · p90 5 min · 236 flights
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