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

Las Vegas, NV (LAS) to St. Louis, MO (STL) flight delay odds

78.9% of 2,073 official scheduled LAS-to-STL flights arrived on time; 13.4% arrived at least 30 minutes late and 0.4% 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
78.9%arrived on time
13.4%30+ min late
0.4%cancelled
2,073scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.0%all scheduled flights
120+ minutes late1.9%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+4.1 mincompleted flights

Which departure time was most reliable for LAS to STL?

Among qualifying LAS-to-STL departure window results, Early morning had the highest on-time rate: 92.0% of 691 flights. Evening was lowest at 65.8% across 404 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning69192.0%4.1%0.6%
Late morning24885.5%7.3%0.0%
Afternoon73071.4%17.7%0.5%
Evening40465.8%25.5%0.2%

Which weekday was most reliable for LAS to STL?

Among qualifying LAS-to-STL weekday results, Wednesday had the highest on-time rate: 84.7% of 262 flights. Sunday was lowest at 74.3% across 335 flights.

DayFlightsOn time30+ minCancelled
Monday33276.5%16.3%0.6%
Tuesday27483.6%10.6%0.4%
Wednesday26284.7%10.7%0.0%
Thursday31574.9%14.3%0.0%
Friday33077.3%15.2%1.2%
Saturday22584.4%8.4%0.0%
Sunday33574.3%15.8%0.6%

Which airline was most reliable for LAS to STL?

Among qualifying LAS-to-STL airline results, Frontier Airlines had the highest on-time rate: 84.4% of 295 flights. Southwest Airlines was lowest at 78.0% across 1,778 flights.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines1,77878.0%14.0%0.2%
Frontier Airlines29584.4%9.8%2.0%

Which month was most reliable for LAS to STL?

Among qualifying LAS-to-STL month results, January 2026 had the highest on-time rate: 84.6% of 162 flights. June 2026 was lowest at 70.6% across 180 flights.

MonthFlightsOn time30+ minCancelled
July 202516473.2%18.3%0.6%
August 202515978.6%14.5%0.0%
September 202516580.0%13.3%0.6%
October 202519178.5%15.2%0.0%
November 202517383.2%13.3%0.0%
December 202518779.7%10.7%0.0%
January 202616284.6%8.6%0.6%
February 202614684.2%5.5%0.0%
March 202620880.3%11.1%1.0%
April 202616778.4%14.4%0.6%
May 202617176.0%14.6%0.0%
June 202618070.6%20.6%1.7%

What drove LAS to STL delay minutes?

Late aircraft was the largest recorded LAS-to-STL delay category, accounting for 52.5% of 24,037 BTS-attributed delay minutes during July 2025–June 2026.

Airline39.2%
Late aircraft52.5%
National airspace8.0%
Weather0.2%
Security0.1%
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.