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

Columbus, OH (CMH) to St. Louis, MO (STL) flight delay odds

Historically, 83.6% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 672 flights.

HISTORICAL ROUTE SIGNALLower disruption
83.6%arrived on time
11.6%30+ min late
0.7%cancelled
672scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.4%all scheduled flights
120+ minutes late2.4%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+2.1 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 morning28794.8%3.8%0.7%
Late morning5893.1%5.2%0.0%
Evening25273.8%18.7%1.2%
Night5464.8%22.2%0.0%

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
Monday10579.0%17.1%1.0%
Tuesday10688.7%7.5%0.0%
Wednesday10290.2%7.8%0.0%
Thursday10283.3%9.8%0.0%
Friday10384.5%8.7%1.0%
Saturday5280.8%15.4%0.0%
Sunday10277.5%16.7%2.9%

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
Southwest Airlines67283.6%11.6%0.7%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 20255773.7%17.5%0.0%
August 20255689.3%8.9%1.8%
September 20255692.9%5.4%1.8%
October 20255789.5%1.8%0.0%
November 20255485.2%11.1%0.0%
December 20255780.7%10.5%0.0%
January 20265784.2%7.0%5.3%
February 20265280.8%17.3%0.0%
March 20265874.1%22.4%0.0%
April 20265683.9%10.7%0.0%
May 20265682.1%16.1%0.0%
June 20265687.5%10.7%0.0%

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.

Airline26.7%
Late aircraft65.6%
National airspace6.1%
Weather1.6%
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.