James M Cox/Dayton International in August 2023

82.0%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 August 2023, reporting carriers scheduled 671 domestic departures from James M Cox/Dayton International (DAY). 82.0% left less than 15 minutes late and 80.5% reached their destination on time; 1.0% were cancelled.

Nationally that month, 76.7% of flights departed on time and 76.9% arrived on time, so DAY departures were 5.3 points above the national departure figure.

Flights arriving at DAY that month were on time 79.6% of the time (672 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 45%, late-arriving aircraft 29% and national aviation system 18%.

On time 80.5%
Arrived 15+ minutes late 18.2%
Cancelled 1.0%
Diverted 0.3%

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

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

Measure	Aug 2023	Year earlier	DAY, 12 months to Jul 2026	All reported flights, Aug 2023
Departed on time	82.0%	—	78.8%	76.7%
Arrived on time	80.5%	—	77.4%	76.9%
Cancelled	1.0%	—	2.7%	1.5%
Average departure delay (late minutes only)	17.4 min	—	20.9 min	17.3 min
Scheduled departures a day	22	—	22	20,100
Scheduled departures	671	—	7,918	602,987

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OH PSA Airlines	319	48%	79.3%	8.9 min	1.3%
OO SkyWest Airlines	150	22%	79.3%	8.7 min	1.3%
DL Delta Air Lines	110	16%	84.5%	12.0 min	0.9%
YX Republic Airline	29	4%	93.1%	-10.1 min	0.0%
9E Endeavor Air	27	4%	85.2%	-7.8 min	0.0%
G4 Allegiant Air	21	3%	52.4%	23.0 min	0.0%
MQ Envoy Air	15	2%	93.3%	-9.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
DAY–ORD	Dayton to Chicago	150	79.3%	8.7 min	1.3%
DAY–CLT	Dayton to Charlotte	119	81.5%	5.2 min	0.8%
DAY–DCA	Dayton to Washington	111	76.6%	19.3 min	2.7%
DAY–ATL	Dayton to Atlanta	110	84.5%	12.0 min	0.9%
DAY–DFW	Dayton to Dallas/Fort Worth	106	81.1%	0.6 min	0.0%
DAY–LGA	Dayton to New York	54	90.7%	-11.0 min	0.0%
DAY–PGD	Dayton to Punta Gorda	9	77.8%	-2.7 min	0.0%
DAY–PIE	Dayton to St. Petersburg	8	37.5%	30.4 min	0.0%
DAY–SFB	Dayton to Sanford	4	25.0%	65.8 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), August 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2023	Minutes
Air carrier	44.5%	36.7%	5,225
Late-arriving aircraft	28.7%	42.2%	3,375
National Aviation System	17.5%	15.7%	2,058
Extreme weather	9.2%	5.1%	1,085
Security	0.0%	0.2%	0

11,743 delay minutes on 122 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 August 2023?

82.0% of 671 scheduled domestic departures left less than 15 minutes late, and 80.5% reached their destination on time. The national figures that month were 76.7% and 76.9%.

How does that compare with a year earlier?

August 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 August 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.