Historical on-time performance
Nashville to Salt Lake City
1,404 miData through Dec 2025Source: US DOT · BTS
Flights on BNA–SLC arrive on time 84% of the time over the last 12 months.
On-time rate84%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled0.3%of scheduled flights
based on 1,178 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesbestOn-time86%Medianon timep9025 minCancel0.3%Flights933
- Southwest AirlinesOn-time76%Medianon timep9050 minCancel0.0%Flights245
Why flights run late
Delay causes
- Airline38%
- Weather6%
- Air traffic (NAS)17%
- Late aircraft39%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly BNA → SLC
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 92% on time.
- Mornings92% on time · p90 5 min · 1,115 flights
- Middays86% on time · p90 20 min · 464 flights
- Afternoons84% on time · p90 25 min · 656 flights
- Evenings82% on time · p90 30 min · 826 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 85% to 89% on time.
- Tuesdays89% on time · p90 15 min · 383 flights
- Wednesdays89% on time · p90 20 min · 399 flights
- Thursdays88% on time · p90 20 min · 434 flights
- Fridays86% on time · p90 25 min · 444 flights
- Sundays86% on time · p90 20 min · 512 flights
- Mondays85% on time · p90 20 min · 445 flights
- Saturdays85% on time · p90 20 min · 449 flights
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