John Glenn Columbus International in December 2024

81.2%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 2024, reporting carriers scheduled 3,528 domestic departures from John Glenn Columbus International (CMH). 81.2% left less than 15 minutes late and 81.8% reached their destination on time; 0.2% were cancelled.

Nationally that month, 77.8% of flights departed on time and 78.1% arrived on time, so CMH departures were 3.4 points above the national departure figure.

A year earlier, in December 2023, the airport had 3,319 departures with 86.7% leaving on time: a change of −5.5 points, with flights up 6%.

Flights arriving at CMH that month were on time 78.9% of the time (3,523 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 44%, late-arriving aircraft 33% and national aviation system 22%.

On time 81.8%
Arrived 15+ minutes late 17.7%
Cancelled 0.2%
Diverted 0.3%

Every scheduled departure from CMH in December 2024, judged by arrival at the destination.

December 2024 against a year earlier, the airport's year and the nation

Measure	Dec 2024	Dec 2023	CMH, 12 months to Jul 2026	All reported flights, Dec 2024
Departed on time	81.2%	86.7%	79.6%	77.8%
Arrived on time	81.8%	88.1%	79.0%	78.1%
Cancelled	0.2%	0.5%	2.0%	0.7%
Average departure delay (late minutes only)	13.4 min	9.0 min	15.0 min	16.6 min
Scheduled departures a day	118	111	123	19,686
Scheduled departures	3,528	3,319	44,711	590,581

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	1,020	29%	82.4%	1.6 min	0.1%
YX Republic Airline	984	28%	86.1%	-2.7 min	0.1%
MQ Envoy Air	321	9%	77.6%	4.1 min	0.3%
AA American Airlines	271	8%	81.5%	4.0 min	0.7%
DL Delta Air Lines	256	7%	85.2%	5.0 min	0.0%
UA United Airlines	197	6%	70.1%	8.2 min	0.5%
NK Spirit Airlines	159	5%	78.0%	6.5 min	0.0%
OH PSA Airlines	122	3%	77.0%	15.7 min	0.8%
OO SkyWest Airlines	119	3%	77.3%	16.2 min	0.0%
9E Endeavor Air	32	1%	68.8%	13.2 min	0.0%
AS Alaska Airlines	28	1%	89.3%	-12.5 min	0.0%
F9 Frontier Airlines	19	1%	89.5%	-1.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
CMH–ORD	Columbus to Chicago	317	77.3%	5.7 min	0.0%
CMH–ATL	Columbus to Atlanta	256	82.8%	2.8 min	0.0%
CMH–LGA	Columbus to New York	240	82.5%	-0.4 min	0.0%
CMH–MCO	Columbus to Orlando	185	85.4%	2.1 min	0.5%
CMH–CLT	Columbus to Charlotte	175	80.6%	6.4 min	0.0%
CMH–EWR	Columbus to Newark	168	81.0%	-2.1 min	0.6%
CMH–BOS	Columbus to Boston	161	87.6%	-6.7 min	0.6%
CMH–DCA	Columbus to Washington	151	79.5%	8.5 min	0.7%
CMH–DFW	Columbus to Dallas/Fort Worth	146	80.8%	6.6 min	1.4%
CMH–JFK	Columbus to New York	144	85.4%	-1.2 min	0.0%
CMH–DEN	Columbus to Denver	142	85.9%	-0.6 min	0.0%
CMH–DTW	Columbus to Detroit	129	89.9%	5.1 min	0.0%

By scheduled departure hour

100

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

Share of departures that left less than 15 minutes late, by scheduled hour (local time), December 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2024	Minutes
Air carrier	43.7%	34.3%	17,998
Late-arriving aircraft	32.8%	40.2%	13,525
National Aviation System	21.7%	17.8%	8,937
Extreme weather	1.7%	7.5%	684
Security	0.1%	0.2%	33

41,177 delay minutes on 623 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 2024?

81.2% of 3,528 scheduled domestic departures left less than 15 minutes late, and 81.8% reached their destination on time. The national figures that month were 77.8% and 78.1%.

How does that compare with a year earlier?

In December 2023, 86.7% of 3,319 departures left on time and 0.5% were cancelled, against 81.2% and 0.2% in December 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 2024; 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.