James M Cox/Dayton International in December 2023

91.4%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 December 2023, reporting carriers scheduled 603 domestic departures from James M Cox/Dayton International (DAY). 91.4% left less than 15 minutes late and 91.9% reached their destination on time; 0.0% were cancelled.

Nationally that month, 83.1% of flights departed on time and 83.8% arrived on time, so DAY departures were 8.3 points above the national departure figure.

Flights arriving at DAY that month were on time 87.2% of the time (603 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 55%, late-arriving aircraft 26% and national aviation system 14%.

On time 91.9%
Arrived 15+ minutes late 7.6%
Cancelled 0.0%
Diverted 0.5%

Every scheduled departure from DAY in December 2023, judged by arrival at the destination.

December 2023 against a year earlier, the airport's year and the nation

Measure	Dec 2023	Year earlier	DAY, 12 months to Jul 2026	All reported flights, Dec 2023
Departed on time	91.4%	—	78.8%	83.1%
Arrived on time	91.9%	—	77.4%	83.8%
Cancelled	0.0%	—	2.7%	0.4%
Average departure delay (late minutes only)	7.9 min	—	20.9 min	11.6 min
Scheduled departures a day	20	—	22	19,013
Scheduled departures	603	—	7,918	570,394

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OH PSA Airlines	301	50%	92.4%	-9.9 min	0.0%
OO SkyWest Airlines	118	20%	89.8%	-2.5 min	0.0%
DL Delta Air Lines	66	11%	97.0%	1.4 min	0.0%
9E Endeavor Air	56	9%	94.6%	-14.1 min	0.0%
G4 Allegiant Air	27	4%	70.4%	8.5 min	0.0%
YX Republic Airline	25	4%	96.0%	-11.4 min	0.0%
MQ Envoy Air	10	2%	100.0%	-18.8 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
DAY–CLT	Dayton to Charlotte	115	93.0%	-4.9 min	0.0%
DAY–ATL	Dayton to Atlanta	103	97.1%	-5.8 min	0.0%
DAY–DFW	Dayton to Dallas/Fort Worth	102	95.1%	-17.8 min	0.0%
DAY–DCA	Dayton to Washington	94	89.4%	-8.3 min	0.0%
DAY–ORD	Dayton to Chicago	87	87.4%	2.6 min	0.0%
DAY–LGA	Dayton to New York	44	93.2%	-8.9 min	0.0%
DAY–DEN	Dayton to Denver	31	96.8%	-16.7 min	0.0%
DAY–PGD	Dayton to Punta Gorda	9	66.7%	4.8 min	0.0%
DAY–PIE	Dayton to St. Petersburg	9	66.7%	12.1 min	0.0%
DAY–SFB	Dayton to Sanford	9	77.8%	8.3 min	0.0%

By scheduled departure hour

100

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), December 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2023	Minutes
Air carrier	55.1%	37.1%	2,250
Late-arriving aircraft	26.0%	38.8%	1,060
National Aviation System	14.4%	17.6%	589
Extreme weather	4.5%	6.2%	183
Security	0.0%	0.3%	0

4,082 delay minutes on 46 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 December 2023?

91.4% of 603 scheduled domestic departures left less than 15 minutes late, and 91.9% reached their destination on time. The national figures that month were 83.1% and 83.8%.

How does that compare with a year earlier?

December 2022 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 December 2023; 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.