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 97%. Evening (6pm - 10pm) drops to 82%. That is a 15-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.
Airline Performance at CMH
Copa Airlines is the most reliable carrier at CMH with 85% on-time. Alaska Airlines runs 31%. That is a 54-point spread. If you have a choice, the airline matters.
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 Evening is a 15-point swing at CMH. The early morning block runs at 97%. If you have any say in your departure time, this is the biggest thing you can control.
Through the Day
vs Last Week
Tracking about the same as last week. Departures at 85%, last week 84%. Arrivals roughly the same. Sun was the worst day, Wed the best.
The Bigger Picture
CMH has been bouncing between 47% and 91%. Best day was Aug 25 at 91%. Worst was Aug 11 at 47%. The norm is 75-81%, which is just how CMH runs.
About CMH Delays
John Glenn Columbus International Airport has averaged 85% on-time departures this week, making it highly reliable. Performance varies by time of day and weather conditions.
John Glenn Columbus International Airport is one of 179 FAA-monitored airports with real-time delay tracking. Data includes departure and arrival on-time percentages, updated every 15 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.