CMH Today
Rough day. Departures at 68%, arrivals better at 78%. Early morning flights ran 16 points better than evening. Fly 5am - 9am if you can. That window has been running at 88%.
What This Means for You
Slower day at CMH. 68% on-time. About 1 in 3 departures is delayed. Check your flight status before heading to the airport. If you can rebook to an earlier departure, do it.
If you can choose your departure time: early morning flights (5am - 9am) run at 88%. Evening (6pm - 10pm) drops to 72%. That is a 16-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
Delta Air Lines is the most reliable carrier at CMH with 80% on-time. United Airlines runs 49%. That is a 31-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 16-point swing at CMH. The early morning block runs at 88%. If you have any say in your departure time, this is the biggest thing you can control.
Through the Day
Morning held up fine at 80%. Hit 50% around 2am, peaked at 100% around 6am. Currently at 68%, well below the morning numbers. A 50-point swing from best to worst today.
vs Last Week
Tracking about the same as last week. Departures at 78%, last week 78%. Arrivals roughly the same. Tue was the worst day, Sun the best.
The Bigger Picture
CMH has been bouncing between 61% and 88%. Best day was May 10 at 88%. Worst was Jul 18 at 61%. The norm is 76-82%, which is just how CMH runs. Today's 68% is well below the norm.
About CMH Delays
John Glenn Columbus International Airport (CMH) is currently experiencing moderate delays with 68% on-time departures and 78% on-time arrivals. This data updates every 15 minutes from FAA sources.
John Glenn Columbus International Airport has averaged 78% 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 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.