CMH Today
What This Means for You
Delay data is currently unavailable for CMH.
If you can choose your departure time: early morning flights (5am - 9am) run at 94%. Afternoon (3pm - 6pm) drops to 80%. That is a 14-point difference from the same airport on the same day.
James M. Cox Dayton International Airport (DAY) is 71 miles away and running 100% today. If your route is available from both airports, DAY is the better bet right now.
CMH Flight Board
Live departures and arrivals at John Glenn Columbus International Airport.
| Status | Airline | Flight | Destination | Sched | Updated | Gate |
|---|---|---|---|---|---|---|
Pick Your Window
Early Morning vs Afternoon is a 14-point swing at CMH. The early morning block runs at 94%. If you have any say in your departure time, this is the biggest thing you can control.
Through the Day
vs Last Week
Down 6 points from last week (79% vs 85%). Arrivals roughly the same. Thu was the worst day, Sat the best.
The Bigger Picture
CMH has been bouncing between 0% and 90%. Best day was Feb 15 at 90%. Worst was Feb 19 at 0%. The norm is 74-80%, which is just how CMH runs.
About CMH Delays
John Glenn Columbus International Airport has averaged 79% on-time departures this week, making it moderately reliable. Performance varies by time of day and weather conditions.
John Glenn Columbus International Airport is one of 179 FAA-monitored US airports with real-time delay tracking. Data includes departure and arrival on-time percentages, updated every 5 minutes, with historical trends available for the past 90 days.
Nearby alternatives include DAY (James M. Cox Dayton International Airport), CAK (Akron Canton Regional Airport) and CLE (Cleveland Hopkins International Airport). When CMH is experiencing delays, these airports may offer better on-time performance.
Early morning departures from John Glenn Columbus International Airport typically have the highest on-time rates. Delays tend to accumulate throughout the day as cascading effects from earlier disruptions compound. Check the 24-hour trend chart above for today's pattern.