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

Dallas/Fort Worth, TX (DFW) to St. Louis, MO (STL) flight delay odds

Historically, 67.0% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,382 flights.

HISTORICAL ROUTE SIGNALVariable
67.0%arrived on time
21.8%30+ min late
3.1%cancelled
2,382scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late13.4%all scheduled flights
120+ minutes late6.0%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+20.7 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Early morning40179.1%13.2%2.2%
Late morning36275.1%15.7%3.0%
Afternoon77764.5%23.4%3.5%
Evening50659.1%28.7%3.2%
Night33661.6%24.7%3.3%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday34562.3%28.4%2.9%
Tuesday33174.3%19.9%1.8%
Wednesday31972.1%18.8%1.6%
Thursday35769.2%20.4%1.4%
Friday33671.7%17.9%3.6%
Saturday33464.1%21.0%6.3%
Sunday36056.4%25.8%4.2%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
American Airlines1,85263.4%24.6%3.3%
Envoy Air30185.7%7.0%2.7%
SkyWest Airlines9862.2%29.6%1.0%
Frontier Airlines8088.8%2.5%0.0%
PSA Airlines5162.7%23.5%7.8%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 202522261.7%28.4%2.3%
August 202520354.2%33.0%2.0%
September 202519575.9%12.3%2.6%
October 202520973.2%19.6%1.0%
November 202520967.9%19.6%4.3%
December 202519867.7%24.2%1.0%
January 202617065.9%14.7%10.6%
February 202616182.6%9.3%0.6%
March 202618666.1%23.1%1.6%
April 202618070.0%21.1%1.7%
May 202620966.0%20.6%3.8%
June 202624058.3%30.0%5.8%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline28.8%
Late aircraft54.8%
National airspace7.7%
Weather8.6%
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.