St. Louis (STL) to Columbus (CMH): On-Time Performance
Data through May 2026
St. Louis (STL) to Columbus (CMH) effectively runs on two schedules. In September 2025, 95% of arrivals were on time; in July 2024 that fell to 65% — a 30-point seasonal swing. Across the full period the route averages 82% on-time against a national 78%. Morning departures also hold up better than evening ones (92% vs 73%), which matters most in the rough months.
- On-time
- 82%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 0.6%
- Flights/day
- 1.8
- last 12 months
- Duration
- 1h 21m
- scheduled
- Distance
- 409 mi
Monthly on-time trend
Best time to fly from STL to CMH
Aim for departures around 8 a.m. (93% on-time); avoid 7 p.m. departures (70%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 80% | 11 min |
| Tuesday | 83% | 10 min |
| Wednesday | 84% | 10 min |
| Thursday | 81% | 12 min |
| Fridaybest | 85% | 10 min |
| Saturday | 81% | 13 min |
| Sunday | 81% | 11 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft55%
- Airline operations37%
- National airspace system6%
- Weather2%
- Security1%
Frequently asked questions
- How often are flights from STL to CMH delayed?
- 18% of STL–CMH flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 11 minutes.
- What is the best time of day to fly from STL to CMH?
- Departures around 8 a.m. have the best record (93% on-time), while departures around 7 p.m. have the worst (70%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from STL to CMH?
- The scheduled STL–CMH flight time averages 1h 21m over 409 miles. Actual arrival times vary — flights on this route land 15+ minutes late 18% of the time.
- How often are STL to CMH flights cancelled?
- 0.6% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from STL to CMH?
- July 2024 was the roughest month in this dataset, with only 65% of arrivals on time. The best was September 2025 at 95%. If your dates are flexible, that 30-point gap is worth planning around.
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Based on 1,341 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.