CMH to STL flight delays
Columbus, OH (CMH) St. Louis, MO (STL) · 409 miles
56 flights · March 2025 – August 2026 · US Bureau of Transportation Statistics
87.5%
Arrived on time
Within 15 minutes of schedule
0%
Cancelled
Share of scheduled flights
55 min
When late, late by
Average across delayed arrivals
8 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The two directions do not behave alike. STL to CMH arrives on time 23.2 points less often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
This route does better than its own airport. Departures from CMH overall run 7.5 points less punctual than this particular one — so whatever congestion CMH has, this route is largely escaping it.
Flights from Columbus to St. Louis keep to schedule more reliably than most. On a route this punctual the day you fly matters more than the airline you pick.
Every airline on CMH to STL
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Southwest Airlines | 56 | 87.5% | 0% | 55 min | — |
The return leg
STL to CMH St. Louis back to Columbus 64.29% on time —Other routes from Columbus
Common questions
Are flights from Columbus to St. Louis usually delayed?
87.5% of flights on the CMH to STL route arrived within 15 minutes of schedule, so roughly 1 in every ten arrived late. That is better than the average route in this record.
How often are CMH to STL flights cancelled?
0% of scheduled flights did not operate — about 1 in every thousand. That is in the normal range.
When CMH to STL flights are late, how late are they?
About 55 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on CMH to STL during March 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →