Historical on-time performance
Great Falls to Salt Lake City
463 miData through May 2026Source: US DOT · BTS
Flights on GTF–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)
Cancelled0.7%of scheduled flights
based on 1,071 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 minCancel0.7%Flights1,071
Why flights run late
Delay causes
- Airline55%
- Weather40%
- Air traffic (NAS)5%
- Late aircraft0%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather50%
- Air traffic (NAS)50%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 8 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 GTF → 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 — 95% on time.
- Mornings95% on time · p90 on time · 1,096 flights
- Middays91% on time · p90 5 min · 1,094 flights
- Evenings89% on time · p90 15 min · 937 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 91% to 95% on time.
- Tuesdays95% on time · p90 5 min · 457 flights
- Wednesdays93% on time · p90 5 min · 455 flights
- Thursdays92% on time · p90 10 min · 456 flights
- Mondays92% on time · p90 5 min · 459 flights
- Sundays91% on time · p90 10 min · 450 flights
- Saturdays91% on time · p90 5 min · 389 flights
- Fridays91% on time · p90 10 min · 461 flights
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