John Glenn Columbus International in March 2026

73.7%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 2026, reporting carriers scheduled 4,010 domestic departures from John Glenn Columbus International (CMH). 73.7% left less than 15 minutes late and 73.8% reached their destination on time; 3.2% were cancelled.

Nationally that month, 72.8% of flights departed on time and 73.2% arrived on time, so CMH departures were 0.9 points above the national departure figure.

A year earlier, in March 2025, the airport had 3,760 departures with 83.5% leaving on time: a change of −9.8 points, with flights up 7%.

Flights arriving at CMH that month were on time 70.0% of the time (4,010 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 34%, national aviation system 32% and air carrier 29%.

On time 73.8%
Arrived 15+ minutes late 22.7%
Cancelled 3.2%
Diverted 0.2%

Every scheduled departure from CMH in March 2026, judged by arrival at the destination.

March 2026 against a year earlier, the airport's year and the nation

Measure	Mar 2026	Mar 2025	CMH, 12 months to Jul 2026	All reported flights, Mar 2026
Departed on time	73.7%	83.5%	79.6%	72.8%
Arrived on time	73.8%	82.9%	79.0%	73.2%
Cancelled	3.2%	0.8%	2.0%	2.9%
Average departure delay (late minutes only)	21.3 min	13.5 min	15.0 min	20.3 min
Scheduled departures a day	134	125	123	20,403
Scheduled departures	4,010	3,760	44,711	612,102

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	1,224	31%	74.3%	9.0 min	1.5%
YX Republic Airline	1,087	27%	75.7%	5.3 min	3.9%
MQ Envoy Air	353	9%	72.5%	15.9 min	2.5%
AA American Airlines	347	9%	80.1%	9.4 min	1.4%
UA United Airlines	301	8%	72.8%	23.0 min	2.3%
DL Delta Air Lines	264	7%	82.2%	0.9 min	3.0%
OO SkyWest Airlines	138	3%	65.9%	31.8 min	7.2%
OH PSA Airlines	112	3%	61.6%	9.5 min	8.0%
NK Spirit Airlines	93	2%	53.8%	26.3 min	18.3%
F9 Frontier Airlines	65	2%	47.7%	48.2 min	6.2%
AS Alaska Airlines	26	1%	53.8%	22.8 min	3.8%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
CMH–ORD	Columbus to Chicago	442	66.3%	24.7 min	5.2%
CMH–LGA	Columbus to New York	267	62.5%	16.7 min	9.7%
CMH–ATL	Columbus to Atlanta	247	77.7%	3.4 min	3.2%
CMH–MCO	Columbus to Orlando	238	67.6%	23.5 min	4.6%
CMH–DCA	Columbus to Washington	182	63.2%	17.2 min	3.3%
CMH–CLT	Columbus to Charlotte	179	78.2%	5.2 min	2.8%
CMH–BOS	Columbus to Boston	178	81.5%	-3.1 min	1.7%
CMH–EWR	Columbus to Newark	155	83.2%	-2.4 min	1.3%
CMH–JFK	Columbus to New York	148	77.7%	3.4 min	2.0%
CMH–DEN	Columbus to Denver	147	73.5%	14.6 min	0.7%
CMH–DFW	Columbus to Dallas/Fort Worth	147	80.3%	12.5 min	1.4%
CMH–MIA	Columbus to Miami	139	78.4%	8.5 min	1.4%

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 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2026	Minutes
Air carrier	29.0%	33.5%	22,770
Late-arriving aircraft	34.3%	39.3%	26,979
National Aviation System	32.1%	21.0%	25,230
Extreme weather	4.5%	5.9%	3,544
Security	0.1%	0.2%	82

78,605 delay minutes on 912 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 2026?

73.7% of 4,010 scheduled domestic departures left less than 15 minutes late, and 73.8% reached their destination on time. The national figures that month were 72.8% and 73.2%.

How does that compare with a year earlier?

In March 2025, 83.5% of 3,760 departures left on time and 0.8% were cancelled, against 73.7% and 3.2% in March 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for March 2026; 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.