BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
SMF→STL

Sacramento, CA (SMF) to St. Louis, MO (STL) flight delay odds

81.0% of 331 official scheduled SMF-to-STL flights arrived on time; 9.4% arrived at least 30 minutes late and 0.0% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
81.0%arrived on time
9.4%30+ min late
0.0%cancelled
331scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late3.3%all scheduled flights
120+ minutes late0.9%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+4.2 mincompleted flights

Which departure time was most reliable for SMF to STL?

Among qualifying SMF-to-STL departure window results, Early morning had the highest on-time rate: 95.3% of 64 flights. Afternoon was lowest at 72.9% across 166 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning6495.3%4.7%0.0%
Late morning10185.1%7.9%0.0%
Afternoon16672.9%12.0%0.0%

Which weekday was most reliable for SMF to STL?

Among qualifying SMF-to-STL weekday results, Saturday had the highest on-time rate: 93.6% of 47 flights. Thursday was lowest at 70.8% across 48 flights.

DayFlightsOn time30+ minCancelled
Monday4981.6%8.2%0.0%
Tuesday4571.1%13.3%0.0%
Wednesday4388.4%7.0%0.0%
Thursday4870.8%14.6%0.0%
Friday4977.6%10.2%0.0%
Saturday4793.6%6.4%0.0%
Sunday5084.0%6.0%0.0%

Which airline was most reliable for SMF to STL?

Only Southwest Airlines met the SMF-to-STL airline threshold: 81.0% of 331 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines33181.0%9.4%0.0%

Which month was most reliable for SMF to STL?

Among qualifying SMF-to-STL month results, February 2026 had the highest on-time rate: 100.0% of 18 flights. June 2026 was lowest at 66.7% across 30 flights.

MonthFlightsOn time30+ minCancelled
July 20253190.3%6.5%0.0%
August 20253190.3%6.5%0.0%
September 20253080.0%10.0%0.0%
October 20253183.9%9.7%0.0%
November 20252982.8%13.8%0.0%
December 20253177.4%12.9%0.0%
February 202618100.0%0.0%0.0%
March 20262979.3%10.3%0.0%
April 20263073.3%10.0%0.0%
May 20263171.0%6.5%0.0%
June 20263066.7%13.3%0.0%

What drove SMF to STL delay minutes?

Late aircraft was the largest recorded SMF-to-STL delay category, accounting for 48.8% of 2,631 BTS-attributed delay minutes during July 2025–June 2026.

Airline41.0%
Late aircraft48.8%
National airspace10.0%
Weather0.0%
Security0.3%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.