John Glenn Columbus International in July 2024

75.4%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 July 2024, reporting carriers scheduled 3,797 domestic departures from John Glenn Columbus International (CMH). 75.4% left less than 15 minutes late and 74.9% reached their destination on time; 2.6% were cancelled.

Nationally that month, 68.5% of flights departed on time and 68.1% arrived on time, so CMH departures were 6.9 points above the national departure figure.

Flights arriving at CMH that month were on time 68.8% of the time (3,797 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 40%, air carrier 38% and national aviation system 20%.

On time 74.9%
Arrived 15+ minutes late 22.0%
Cancelled 2.6%
Diverted 0.4%

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

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

Measure	Jul 2024	Year earlier	CMH, 12 months to Jul 2026	All reported flights, Jul 2024
Departed on time	75.4%	—	79.6%	68.5%
Arrived on time	74.9%	—	79.0%	68.1%
Cancelled	2.6%	—	2.0%	2.9%
Average departure delay (late minutes only)	19.8 min	—	15.0 min	24.9 min
Scheduled departures a day	127	—	123	21,154
Scheduled departures	3,797	—	44,711	634,613

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	1,016	27%	76.2%	10.0 min	0.4%
YX Republic Airline	966	25%	82.3%	2.3 min	1.2%
DL Delta Air Lines	368	10%	74.2%	13.3 min	6.8%
AA American Airlines	304	8%	68.4%	31.5 min	5.3%
NK Spirit Airlines	297	8%	66.7%	11.0 min	6.1%
UA United Airlines	234	6%	66.7%	17.9 min	7.7%
OH PSA Airlines	203	5%	67.5%	17.8 min	2.5%
MQ Envoy Air	200	5%	73.5%	17.6 min	1.0%
OO SkyWest Airlines	106	3%	71.7%	25.6 min	0.0%
AS Alaska Airlines	62	2%	80.6%	-0.2 min	0.0%
F9 Frontier Airlines	41	1%	73.2%	24.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
CMH–ATL	Columbus to Atlanta	278	71.9%	16.6 min	5.4%
CMH–LGA	Columbus to New York	251	77.7%	7.4 min	2.4%
CMH–ORD	Columbus to Chicago	234	75.6%	17.3 min	3.4%
CMH–PHL	Columbus to Philadelphia	195	72.3%	15.0 min	4.1%
CMH–MCO	Columbus to Orlando	188	71.8%	13.9 min	2.7%
CMH–CLT	Columbus to Charlotte	180	63.9%	21.5 min	2.8%
CMH–EWR	Columbus to Newark	178	79.2%	0.6 min	2.2%
CMH–BOS	Columbus to Boston	171	77.2%	1.5 min	2.3%
CMH–DEN	Columbus to Denver	164	76.2%	9.5 min	0.6%
CMH–DFW	Columbus to Dallas/Fort Worth	164	75.6%	27.3 min	4.9%
CMH–JFK	Columbus to New York	155	76.1%	5.5 min	1.9%
CMH–DCA	Columbus to Washington	147	72.8%	14.4 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), July 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2024	Minutes
Air carrier	37.9%	36.6%	26,543
Late-arriving aircraft	40.3%	42.7%	28,275
National Aviation System	20.3%	16.0%	14,213
Extreme weather	1.4%	4.6%	970
Security	0.1%	0.1%	83

70,084 delay minutes on 837 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 July 2024?

75.4% of 3,797 scheduled domestic departures left less than 15 minutes late, and 74.9% reached their destination on time. The national figures that month were 68.5% and 68.1%.

How does that compare with a year earlier?

July 2023 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

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