Historical on-time performance
Sacramento to St. Louis
1,679 miData through May 2026Source: US DOT · BTS
Flights on SMF–STL arrive on time 82% of the time over the last 12 months.
On-time rate82%arrived within 15 min
p90 delay25 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-time82%Medianon timep9025 minCancel0.0%Flights245
Why flights run late
Delay causes
- Airline45%
- Weather0%
- Air traffic (NAS)13%
- Late aircraft42%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline56%
- Weather44%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 9 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 SMF → STL
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 — 92% on time.
- Mornings92% on time · p90 10 min · 492 flights
- Middays78% on time · p90 30 min · 509 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 79% to 90% on time.
- Saturdays90% on time · p90 10 min · 147 flights · limited
- Wednesdays88% on time · p90 20 min · 138 flights · limited
- Sundays88% on time · p90 15 min · 160 flights · limited
- Mondays86% on time · p90 15 min · 150 flights · limited
- Tuesdays82% on time · p90 25 min · 140 flights · limited
- Thursdays80% on time · p90 30 min · 148 flights · limited
- Fridays79% on time · p90 25 min · 150 flights · limited
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