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

Los Angeles, CA (LAX) to St. Louis, MO (STL) flight delay odds

76.5% of 1,028 official scheduled LAX-to-STL flights arrived on time; 13.0% arrived at least 30 minutes late and 0.5% 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 SIGNALGenerally reliable
76.5%arrived on time
13.0%30+ min late
0.5%cancelled
1,028scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.9%all scheduled flights
120+ minutes late2.1%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+6.6 mincompleted flights

Which departure time was most reliable for LAX to STL?

Among qualifying LAX-to-STL departure window results, Early morning had the highest on-time rate: 91.4% of 292 flights. Afternoon was lowest at 62.9% across 202 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning29291.4%3.4%0.7%
Late morning8172.8%9.9%1.2%
Afternoon20262.9%18.8%0.0%
Evening45373.5%17.2%0.4%

Which weekday was most reliable for LAX to STL?

Among qualifying LAX-to-STL weekday results, Wednesday had the highest on-time rate: 86.8% of 129 flights. Monday was lowest at 69.8% across 159 flights.

DayFlightsOn time30+ minCancelled
Monday15969.8%20.1%1.9%
Tuesday13779.6%9.5%0.0%
Wednesday12986.8%5.4%0.8%
Thursday15573.5%10.3%0.0%
Friday16077.5%12.5%0.0%
Saturday13476.9%14.9%0.7%
Sunday15473.4%16.9%0.0%

Which airline was most reliable for LAX to STL?

Among qualifying LAX-to-STL airline results, SkyWest Airlines had the highest on-time rate: 77.7% of 354 flights. Southwest Airlines was lowest at 75.8% across 674 flights.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines67475.8%12.8%0.4%
SkyWest Airlines35477.7%13.6%0.6%

Which month was most reliable for LAX to STL?

Among qualifying LAX-to-STL month results, February 2026 had the highest on-time rate: 82.4% of 74 flights. March 2026 was lowest at 64.5% across 76 flights.

MonthFlightsOn time30+ minCancelled
July 20259381.7%11.8%0.0%
August 20259275.0%14.1%1.1%
September 20258280.5%9.8%0.0%
October 20259582.1%14.7%0.0%
November 202510272.5%15.7%1.0%
December 202510375.7%12.6%0.0%
January 20267577.3%9.3%0.0%
February 20267482.4%9.5%0.0%
March 20267664.5%17.1%2.6%
April 20267380.8%6.8%1.4%
May 20267576.0%13.3%0.0%
June 20268869.3%19.3%0.0%

What drove LAX to STL delay minutes?

Late aircraft was the largest recorded LAX-to-STL delay category, accounting for 47.4% of 12,118 BTS-attributed delay minutes during July 2025–June 2026.

Airline42.2%
Late aircraft47.4%
National airspace9.9%
Weather0.5%
Security0.0%
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.