John Glenn Columbus International in December 2025

72.2%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In December 2025, reporting carriers scheduled 3,567 domestic departures from John Glenn Columbus International (CMH). 72.2% left less than 15 minutes late and 69.4% reached their destination on time; 1.7% were cancelled.

Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so CMH departures were level with the national departure figure.

A year earlier, in December 2024, the airport had 3,528 departures with 81.2% leaving on time: a change of −9.0 points, with flights up 1%.

Flights arriving at CMH that month were on time 71.6% of the time (3,559 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 35%, late-arriving aircraft 34% and national aviation system 27%.

On time 69.4%
Arrived 15+ minutes late 28.8%
Cancelled 1.7%
Diverted 0.1%

Every scheduled departure from CMH in December 2025, judged by arrival at the destination.

December 2025 against a year earlier, the airport's year and the nation

Measure	Dec 2025	Dec 2024	CMH, 12 months to Jul 2026	All reported flights, Dec 2025
Departed on time	72.2%	81.2%	79.6%	72.0%
Arrived on time	69.4%	81.8%	79.0%	71.9%
Cancelled	1.7%	0.2%	2.0%	1.5%
Average departure delay (late minutes only)	21.1 min	13.4 min	15.0 min	21.2 min
Scheduled departures a day	119	118	123	19,410
Scheduled departures	3,567	3,528	44,711	582,304

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	1,102	31%	74.9%	8.7 min	0.5%
YX Republic Airline	1,050	29%	68.5%	11.4 min	3.0%
AA American Airlines	319	9%	74.0%	24.1 min	0.9%
DL Delta Air Lines	267	7%	77.5%	11.0 min	1.1%
MQ Envoy Air	259	7%	68.3%	13.6 min	0.8%
UA United Airlines	210	6%	57.1%	34.2 min	0.5%
OH PSA Airlines	125	4%	57.6%	18.2 min	7.2%
OO SkyWest Airlines	92	3%	46.7%	64.9 min	3.3%
NK Spirit Airlines	89	2%	58.4%	18.7 min	2.2%
AS Alaska Airlines	31	1%	38.7%	37.9 min	0.0%
F9 Frontier Airlines	23	1%	60.9%	17.8 min	4.3%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
CMH–ORD	Columbus to Chicago	349	57.6%	36.7 min	1.7%
CMH–LGA	Columbus to New York	260	68.1%	12.6 min	4.6%
CMH–ATL	Columbus to Atlanta	253	77.5%	10.5 min	1.2%
CMH–MCO	Columbus to Orlando	194	72.7%	13.4 min	0.5%
CMH–EWR	Columbus to Newark	178	63.5%	14.3 min	5.1%
CMH–CLT	Columbus to Charlotte	171	74.9%	9.1 min	1.2%
CMH–DFW	Columbus to Dallas/Fort Worth	158	70.3%	21.2 min	0.0%
CMH–DCA	Columbus to Washington	149	51.7%	21.5 min	3.4%
CMH–BOS	Columbus to Boston	148	81.1%	-1.8 min	1.4%
CMH–DEN	Columbus to Denver	141	63.1%	20.6 min	0.0%
CMH–JFK	Columbus to New York	133	66.9%	14.2 min	2.3%
CMH–MIA	Columbus to Miami	108	69.4%	8.1 min	0.0%

By scheduled departure hour

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), December 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2025	Minutes
Air carrier	34.9%	33.3%	26,830
Late-arriving aircraft	33.9%	41.1%	26,087
National Aviation System	26.8%	19.1%	20,641
Extreme weather	4.4%	6.4%	3,400
Security	0.0%	0.2%	6

76,964 delay minutes on 1,027 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left CMH on time in December 2025?

72.2% of 3,567 scheduled domestic departures left less than 15 minutes late, and 69.4% reached their destination on time. The national figures that month were 72.0% and 71.9%.

How does that compare with a year earlier?

In December 2024, 81.2% of 3,528 departures left on time and 0.2% were cancelled, against 72.2% and 1.7% in December 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for CMH · methodology · corrections.