Historical on-time performance
Boise to Salt Lake City
Flights on BOI–SLC arrive on time 91% of the time over the last 12 months.
based on 1,693 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesbestOn-time95%Medianon timep90on timeCancel0.2%Flights459
- Delta Air LinesOn-time90%Medianon timep9010 minCancel1.1%Flights1,234
Why flights run late
Delay causes
- Airline57%
- Weather4%
- Air traffic (NAS)10%
- Late aircraft29%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline80%
- Weather13%
- Air traffic (NAS)7%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 15 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 BOI → SLC
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 87% to 90% on time.
- Mornings90% on time · p90 10 min · 1,380 flights
- Middays89% on time · p90 15 min · 2,166 flights
- Evenings87% on time · p90 20 min · 1,494 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 86% to 91% on time.
- Tuesdays91% on time · p90 5 min · 725 flights
- Thursdays90% on time · p90 10 min · 733 flights
- Saturdays89% on time · p90 15 min · 676 flights
- Fridays89% on time · p90 15 min · 739 flights
- Wednesdays88% on time · p90 15 min · 723 flights
- Sundays88% on time · p90 20 min · 737 flights
- Mondays86% on time · p90 20 min · 736 flights
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