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

St. Louis, MO (STL) to Dallas, TX (DAL) flight delay odds

74.6% of 1,925 official scheduled STL-to-DAL flights arrived on time; 14.8% arrived at least 30 minutes late and 1.5% 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
74.6%arrived on time
14.8%30+ min late
1.5%cancelled
1,925scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.4%all scheduled flights
120+ minutes late2.5%all scheduled flights
Diverted0.6%did not reach as scheduled
Average arrival+8.1 mincompleted flights

Which departure time was most reliable for STL to DAL?

Among qualifying STL-to-DAL departure window results, Early morning had the highest on-time rate: 89.3% of 600 flights. Night was lowest at 54.3% across 138 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning60089.3%4.2%1.8%
Late morning22183.7%8.6%0.9%
Afternoon54768.6%17.9%1.5%
Evening41963.2%25.1%1.4%
Night13854.3%27.5%1.4%

Which weekday was most reliable for STL to DAL?

Among qualifying STL-to-DAL weekday results, Wednesday had the highest on-time rate: 83.7% of 276 flights. Sunday was lowest at 64.3% across 283 flights.

DayFlightsOn time30+ minCancelled
Monday29270.5%17.1%2.1%
Tuesday28183.6%10.7%0.7%
Wednesday27683.7%10.5%0.4%
Thursday28972.7%15.2%0.7%
Friday29177.3%13.4%1.0%
Saturday21369.0%16.4%3.3%
Sunday28364.3%20.5%2.8%

Which airline was most reliable for STL to DAL?

Only Southwest Airlines met the STL-to-DAL airline threshold: 74.6% of 1,925 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines1,92574.6%14.8%1.5%

Which month was most reliable for STL to DAL?

Among qualifying STL-to-DAL month results, January 2026 had the highest on-time rate: 85.5% of 145 flights. June 2026 was lowest at 54.7% across 170 flights.

MonthFlightsOn time30+ minCancelled
July 202516269.1%17.3%1.2%
August 202517374.6%12.7%1.2%
September 202517277.9%12.8%0.0%
October 202515673.1%16.7%1.3%
November 202515377.1%14.4%2.6%
December 202515376.5%13.7%1.3%
January 202614585.5%5.5%5.5%
February 202614985.2%8.1%1.3%
March 202616774.9%13.8%1.2%
April 202615878.5%12.0%1.3%
May 202616771.3%17.4%1.8%
June 202617054.7%31.2%0.0%

What drove STL to DAL delay minutes?

Late aircraft was the largest recorded STL-to-DAL delay category, accounting for 46.6% of 27,213 BTS-attributed delay minutes during July 2025–June 2026.

Airline29.7%
Late aircraft46.6%
National airspace19.0%
Weather4.5%
Security0.2%
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.