CMH Today
Rough day, worse than the weekly average. Departures at 53%, arrivals better at 84%. Early morning flights ran 18 points better than evening. Fly 5am - 9am if you can. That window has been running at 92%.
What This Means for You
Rough day at CMH. Only 53% on-time. Expect delays across the board. Check your airline app for gate changes. If connecting, prepare for misconnects.
If you can choose your departure time: early morning flights (5am - 9am) run at 92%. Evening (6pm - 10pm) drops to 74%. That is a 18-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
United Airlines is the most reliable carrier at CMH with 67% on-time. Aer Lingus runs 36%. 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 18-point swing at CMH. The early morning block runs at 92%. 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 89%. Hit 45% around 11pm, peaked at 100% around 6am. Currently at 53%, well below the morning numbers. A 55-point swing from best to worst today.
vs Last Week
Tracking about the same as last week. Departures at 75%, last week 75%. Arrivals roughly the same. Mon was the worst day, Tue the best.
The Bigger Picture
CMH has been bouncing between 53% and 90%. Best day was Apr 25 at 90%. Worst was Jun 17 at 53%. The norm is 77-83%, which is just how CMH runs. Today's 53% is well below the norm.
About CMH Delays
John Glenn Columbus International Airport (CMH) is currently experiencing significant delays with 53% on-time departures and 84% on-time arrivals. This data updates every 15 minutes from FAA sources.
John Glenn Columbus International Airport has averaged 75% 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.