James M Cox/Dayton International in July 2024

75.8%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 641 domestic departures from James M Cox/Dayton International (DAY). 75.8% left less than 15 minutes late and 75.4% reached their destination on time; 3.9% were cancelled.

Nationally that month, 68.5% of flights departed on time and 68.1% arrived on time, so DAY departures were 7.3 points above the national departure figure.

Flights arriving at DAY that month were on time 66.9% of the time (640 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 42%, air carrier 34% and national aviation system 23%.

On time 75.4%
Arrived 15+ minutes late 20.4%
Cancelled 3.9%
Diverted 0.3%

Every scheduled departure from DAY 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	DAY, 12 months to Jul 2026	All reported flights, Jul 2024
Departed on time	75.8%	—	78.8%	68.5%
Arrived on time	75.4%	—	77.4%	68.1%
Cancelled	3.9%	—	2.7%	2.9%
Average departure delay (late minutes only)	22.6 min	—	20.9 min	24.9 min
Scheduled departures a day	21	—	22	21,154
Scheduled departures	641	—	7,918	634,613

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OH PSA Airlines	288	45%	74.7%	13.5 min	2.4%
OO SkyWest Airlines	153	24%	84.3%	3.1 min	0.7%
DL Delta Air Lines	112	17%	70.5%	16.9 min	8.9%
9E Endeavor Air	31	5%	58.1%	41.1 min	12.9%
MQ Envoy Air	31	5%	87.1%	5.3 min	0.0%
G4 Allegiant Air	26	4%	57.7%	17.4 min	11.5%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
DAY–DFW	Dayton to Dallas/Fort Worth	123	77.2%	9.3 min	0.8%
DAY–ORD	Dayton to Chicago	122	82.0%	-0.2 min	0.8%
DAY–CLT	Dayton to Charlotte	117	76.9%	17.5 min	0.9%
DAY–ATL	Dayton to Atlanta	116	70.7%	21.3 min	8.6%
DAY–DCA	Dayton to Washington	79	72.2%	10.6 min	6.3%
DAY–DEN	Dayton to Denver	31	93.5%	15.8 min	0.0%
DAY–LGA	Dayton to New York	27	55.6%	25.0 min	14.8%
DAY–PGD	Dayton to Punta Gorda	9	66.7%	21.0 min	11.1%
DAY–PIE	Dayton to St. Petersburg	9	77.8%	-4.7 min	11.1%
DAY–SFB	Dayton to Sanford	8	25.0%	38.7 min	12.5%

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), July 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2024	Minutes
Air carrier	33.8%	36.6%	4,629
Late-arriving aircraft	42.2%	42.7%	5,783
National Aviation System	22.8%	16.0%	3,129
Extreme weather	1.2%	4.6%	171
Security	0.0%	0.1%	0

13,712 delay minutes on 131 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 DAY on time in July 2024?

75.8% of 641 scheduled domestic departures left less than 15 minutes late, and 75.4% 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 DAY · methodology · corrections.