CMH Today
Bad day. Departures at 48%, arrivals better at 59%. Late morning flights ran 60 points better than early morning. Fly 9am - 12pm if you can. That window has been running at 80%.
Pick Your Window
Late Morning vs Early Morning is a 60-point swing at CMH. The late morning block runs at 80%. If you have any say in your departure time, this is the biggest thing you can control.
Through the Day
Morning was already rough at 50%. Hit 0% around 3am, peaked at 87% around 10am. A 87-point swing from best to worst today.
vs Last Week
Down 17 points from last week (56% vs 73%). Arrivals down 14 points too. Tue was the worst day, Sun 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 65-71%, which is just how CMH runs. Today's 48% is well below the norm.
About CMH Delays
John Glenn Columbus International Airport (CMH) is currently experiencing significant delays with 48% on-time departures and 59% on-time arrivals. This data updates every 5 minutes from FAA sources.
John Glenn Columbus International Airport has averaged 56% on-time departures this week, making it frequently delayed. 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.