Historical on-time performance
Salt Lake City to St. Louis
Flights on SLC–STL arrive on time 83% of the time over the last 12 months.
based on 978 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time83%Medianon timep9035 minCancel0.6%Flights978
Why flights run late
Delay causes
- Airline62%
- Weather2%
- Air traffic (NAS)8%
- Late aircraft28%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline67%
- Weather33%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 6 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 SLC → STL
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 79% to 87% on time.
- Mornings87% on time · p90 15 min · 1,072 flights
- Middays84% on time · p90 25 min · 456 flights
- Afternoons84% on time · p90 25 min · 305 flights
- Evenings83% on time · p90 30 min · 363 flights
- Overnights79% on time · p90 45 min · 729 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 80% to 89% on time.
- Tuesdays89% on time · p90 15 min · 402 flights
- Mondays85% on time · p90 25 min · 441 flights
- Thursdays84% on time · p90 30 min · 437 flights
- Wednesdays84% on time · p90 25 min · 405 flights
- Saturdays84% on time · p90 20 min · 368 flights
- Fridays80% on time · p90 35 min · 437 flights
- Sundays80% on time · p90 35 min · 435 flights
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