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Airport Reliability

CMH · Columbus

John Glenn Columbus International Airport

81%
Departures within 15 minutes
12 min
Average departure delay
77%
Arrivals within 15 minutes
2.1%
Departures cancelled

Based on 47,179 departures and 47,182 arrivals. Data through May 2026.

What the data says

Morning flights do better here.

Departures from CMH departing between 3–6 AM arrived on time 94% of the time, versus 69% between 9 PM–12 AM.

Monday is the weak spot.

Departures from CMH arrived on time 84% of the time on Wednesdays. On Mondays: 76%.

Ticking up lately.

Departures from CMH arrived on time 82% of the time over the last three months in the data, compared with 79% in the three months before that.

When CMH gets messy

On-time by departure window
  • 3–6 AM94%(2165 flights)
  • 6–9 AM89%(13771 flights)
  • 9 AM–12 PM85%(7461 flights)
  • 12–3 PM77%(7536 flights)
  • 3–6 PM70%(8157 flights)
  • 6–9 PM70%(6629 flights)
  • 9 PM–12 AM69%(361 flights)
On-time by weekday
  • Mon76%(6837 flights)
  • Tue83%(6329 flights)
  • Wed84%(6355 flights)
  • Thu80%(6825 flights)
  • Fri80%(6920 flights)
  • Sat82%(5868 flights)
  • Sun77%(6946 flights)
On-time trend by month
84%
May

Jun 75% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202575%4002
July 202574%3986
August 202583%3881
September 202586%3882
October 202582%4194
November 202581%3782
December 202571%3739
January 202682%3349
February 202683%3302
March 202678%4047
April 202685%3928
May 202684%3988

Airlines departing CMH

Busiest routes from CMH

Based on 47,179 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.