John Glenn Columbus International in March 2025

83.5%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 March 2025, reporting carriers scheduled 3,760 domestic departures from John Glenn Columbus International (CMH). 83.5% left less than 15 minutes late and 82.9% reached their destination on time; 0.8% were cancelled.

Nationally that month, 79.9% of flights departed on time and 79.3% arrived on time, so CMH departures were 3.6 points above the national departure figure.

A year earlier, in March 2024, the airport had 3,461 departures with 82.3% leaving on time: a change of +1.2 points, with flights up 9%.

Flights arriving at CMH that month were on time 79.4% of the time (3,760 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 39%, air carrier 33% and national aviation system 26%.

On time 82.9%
Arrived 15+ minutes late 15.9%
Cancelled 0.8%
Diverted 0.4%

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

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

Measure	Mar 2025	Mar 2024	CMH, 12 months to Jul 2026	All reported flights, Mar 2025
Departed on time	83.5%	82.3%	79.6%	79.9%
Arrived on time	82.9%	82.1%	79.0%	79.3%
Cancelled	0.8%	0.6%	2.0%	1.2%
Average departure delay (late minutes only)	13.5 min	13.1 min	15.0 min	14.9 min
Scheduled departures a day	125	115	123	20,029
Scheduled departures	3,760	3,461	44,711	600,872

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	1,166	31%	82.5%	3.6 min	0.6%
YX Republic Airline	1,023	27%	86.4%	-1.8 min	0.7%
AA American Airlines	383	10%	76.5%	13.4 min	2.1%
MQ Envoy Air	282	8%	79.4%	3.2 min	0.4%
DL Delta Air Lines	261	7%	91.2%	-7.6 min	0.4%
NK Spirit Airlines	198	5%	81.8%	-1.2 min	0.5%
UA United Airlines	185	5%	81.1%	2.8 min	0.0%
OH PSA Airlines	145	4%	73.1%	9.1 min	2.1%
OO SkyWest Airlines	66	2%	87.9%	5.3 min	0.0%
AS Alaska Airlines	28	1%	75.0%	6.3 min	0.0%
F9 Frontier Airlines	23	1%	78.3%	-3.8 min	4.3%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
CMH–ORD	Columbus to Chicago	347	78.1%	8.0 min	0.0%
CMH–LGA	Columbus to New York	279	82.1%	4.3 min	1.1%
CMH–ATL	Columbus to Atlanta	252	91.3%	-7.3 min	0.0%
CMH–MCO	Columbus to Orlando	227	81.1%	3.8 min	1.8%
CMH–CLT	Columbus to Charlotte	183	74.9%	16.1 min	2.7%
CMH–DCA	Columbus to Washington	179	76.0%	6.4 min	1.1%
CMH–BOS	Columbus to Boston	161	90.1%	-5.5 min	0.6%
CMH–DFW	Columbus to Dallas/Fort Worth	151	79.5%	-1.4 min	2.0%
CMH–EWR	Columbus to Newark	150	92.7%	-12.1 min	0.7%
CMH–DEN	Columbus to Denver	137	88.3%	-5.9 min	0.0%
CMH–FLL	Columbus to Fort Lauderdale	136	85.3%	-5.5 min	0.7%
CMH–JFK	Columbus to New York	130	84.6%	0.3 min	1.5%

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), March 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2025	Minutes
Air carrier	32.5%	33.0%	15,402
Late-arriving aircraft	38.5%	39.2%	18,214
National Aviation System	25.7%	21.9%	12,193
Extreme weather	3.2%	5.9%	1,515
Security	0.1%	0.1%	45

47,369 delay minutes on 599 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 March 2025?

83.5% of 3,760 scheduled domestic departures left less than 15 minutes late, and 82.9% reached their destination on time. The national figures that month were 79.9% and 79.3%.

How does that compare with a year earlier?

In March 2024, 82.3% of 3,461 departures left on time and 0.6% were cancelled, against 83.5% and 0.8% in March 2025.

Provenance

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