Historical on-time performance
St. Louis to Sacramento
1,679 miData through Dec 2025Source: US DOT · BTS
Flights on STL–SMF arrive on time 76% of the time over the last 12 months.
On-time rate76%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 245 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time76%Medianon timep9045 minCancel0.0%Flights245
Why flights run late
Delay causes
- Airline37%
- Weather7%
- Air traffic (NAS)6%
- Late aircraft50%
- 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 STL → SMF
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 55% to 76% on time.
- Middays76% on time · p90 40 min · 284 flights
- Afternoons71% on time · p90 45 min · 431 flights
- Overnights71% on time · p90 35 min · 72 flights · limited
- Evenings55% on time · p90 65 min · 146 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 61% to 76% on time.
- Wednesdays76% on time · p90 30 min · 127 flights · limited
- Fridays73% on time · p90 55 min · 131 flights · limited
- Mondays72% on time · p90 45 min · 133 flights · limited
- Thursdays72% on time · p90 35 min · 129 flights · limited
- Tuesdays72% on time · p90 45 min · 128 flights · limited
- Saturdays66% on time · p90 65 min · 137 flights · limited
- Sundays61% on time · p90 50 min · 148 flights · limited
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