Southwest Airlines is the most reliable airline on the STL to SMF route with a 72% on-time rate. Based on 1,089 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: STL to SMF
St. Louis to Sacramento — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines72%
STL to SMF Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 72% | 0.2% | 49m | 1,089 |
Route Overview
73%
Overall On-Time
49m
Avg Delay
0.1%
Cancel Rate
1,089
Total Flights
Flying out of STL? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.