James M Cox/Dayton International in November 2025

79.3%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 November 2025, reporting carriers scheduled 757 domestic departures from James M Cox/Dayton International (DAY). 79.3% left less than 15 minutes late and 76.0% reached their destination on time; 3.8% were cancelled.

Nationally that month, 78.1% of flights departed on time and 77.3% arrived on time, so DAY departures were 1.2 points above the national departure figure.

A year earlier, in November 2024, the airport had 616 departures with 90.3% leaving on time: a change of −11.0 points, with flights up 23%.

Flights arriving at DAY that month were on time 72.5% of the time (756 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 40%, national aviation system 26% and air carrier 25%.

On time 76.0%
Arrived 15+ minutes late 20.1%
Cancelled 3.8%
Diverted 0.1%

Every scheduled departure from DAY in November 2025, judged by arrival at the destination.

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

Measure	Nov 2025	Nov 2024	DAY, 12 months to Jul 2026	All reported flights, Nov 2025
Departed on time	79.3%	90.3%	78.8%	78.1%
Arrived on time	76.0%	88.1%	77.4%	77.3%
Cancelled	3.8%	0.6%	2.7%	2.5%
Average departure delay (late minutes only)	21.7 min	8.5 min	20.9 min	15.6 min
Scheduled departures a day	25	21	22	19,018
Scheduled departures	757	616	7,918	570,550

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OH PSA Airlines	393	52%	75.6%	7.9 min	2.8%
DL Delta Air Lines	135	18%	89.6%	-11.2 min	3.7%
MQ Envoy Air	81	11%	72.8%	12.6 min	3.7%
OO SkyWest Airlines	61	8%	57.4%	55.0 min	14.8%
UA United Airlines	60	8%	76.7%	6.6 min	1.7%
G4 Allegiant Air	27	4%	63.0%	14.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
DAY–ORD	Dayton to Chicago	229	66.8%	23.5 min	7.9%
DAY–ATL	Dayton to Atlanta	135	89.6%	-11.2 min	3.7%
DAY–DFW	Dayton to Dallas/Fort Worth	118	77.1%	1.7 min	0.8%
DAY–CLT	Dayton to Charlotte	105	80.0%	8.2 min	1.0%
DAY–DCA	Dayton to Washington	84	69.0%	14.5 min	4.8%
DAY–DEN	Dayton to Denver	30	83.3%	4.5 min	0.0%
DAY–PHL	Dayton to Philadelphia	29	89.7%	-1.6 min	0.0%
DAY–PGD	Dayton to Punta Gorda	9	77.8%	-1.6 min	0.0%
DAY–PIE	Dayton to St. Petersburg	9	55.6%	3.3 min	0.0%
DAY–SFB	Dayton to Sanford	9	55.6%	40.3 min	0.0%

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), November 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Nov 2025	Minutes
Air carrier	24.5%	30.2%	4,076
Late-arriving aircraft	40.3%	38.3%	6,714
National Aviation System	25.7%	26.7%	4,288
Extreme weather	9.5%	4.6%	1,588
Security	0.0%	0.1%	0

16,666 delay minutes on 152 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 November 2025?

79.3% of 757 scheduled domestic departures left less than 15 minutes late, and 76.0% reached their destination on time. The national figures that month were 78.1% and 77.3%.

How does that compare with a year earlier?

In November 2024, 90.3% of 616 departures left on time and 0.6% were cancelled, against 79.3% and 3.8% in November 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for November 2025; 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.