James M Cox/Dayton International in March 2025

82.4%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 March 2025, reporting carriers scheduled 618 domestic departures from James M Cox/Dayton International (DAY). 82.4% left less than 15 minutes late and 79.3% reached their destination on time; 1.8% were cancelled.

Nationally that month, 79.9% of flights departed on time and 79.3% arrived on time, so DAY departures were 2.5 points above the national departure figure.

A year earlier, in March 2024, the airport had 656 departures with 90.5% leaving on time: a change of −8.1 points, with flights down 6%.

Flights arriving at DAY that month were on time 73.7% of the time (616 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 41%, late-arriving aircraft 33% and national aviation system 17%.

On time 79.3%
Arrived 15+ minutes late 18.3%
Cancelled 1.8%
Diverted 0.6%

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

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

Measure	Mar 2025	Mar 2024	DAY, 12 months to Jul 2026	All reported flights, Mar 2025
Departed on time	82.4%	90.5%	78.8%	79.9%
Arrived on time	79.3%	88.6%	77.4%	79.3%
Cancelled	1.8%	0.3%	2.7%	1.2%
Average departure delay (late minutes only)	18.4 min	9.1 min	20.9 min	14.9 min
Scheduled departures a day	21	22	22	20,029
Scheduled departures	618	656	7,918	600,872

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OH PSA Airlines	325	53%	77.2%	6.9 min	2.2%
DL Delta Air Lines	116	19%	91.4%	-18.7 min	1.7%
OO SkyWest Airlines	101	16%	79.2%	0.1 min	0.0%
G4 Allegiant Air	27	4%	51.9%	78.6 min	0.0%
YX Republic Airline	27	4%	77.8%	6.3 min	0.0%
MQ Envoy Air	22	4%	81.8%	42.7 min	9.1%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
DAY–ATL	Dayton to Atlanta	116	91.4%	-18.7 min	1.7%
DAY–DFW	Dayton to Dallas/Fort Worth	114	77.2%	4.1 min	4.4%
DAY–DCA	Dayton to Washington	109	75.2%	15.1 min	1.8%
DAY–CLT	Dayton to Charlotte	93	74.2%	13.4 min	2.2%
DAY–ORD	Dayton to Chicago	71	71.8%	10.0 min	0.0%
DAY–DEN	Dayton to Denver	31	93.5%	-20.5 min	0.0%
DAY–PHL	Dayton to Philadelphia	31	96.8%	-6.8 min	0.0%
DAY–LGA	Dayton to New York	26	80.8%	4.3 min	0.0%
DAY–PGD	Dayton to Punta Gorda	9	55.6%	151.0 min	0.0%
DAY–PIE	Dayton to St. Petersburg	9	77.8%	23.2 min	0.0%
DAY–SFB	Dayton to Sanford	9	22.2%	61.6 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), March 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2025	Minutes
Air carrier	40.8%	33.0%	4,684
Late-arriving aircraft	32.9%	39.2%	3,782
National Aviation System	16.8%	21.9%	1,925
Extreme weather	9.5%	5.9%	1,089
Security	0.0%	0.1%	0

11,480 delay minutes on 113 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 March 2025?

82.4% of 618 scheduled domestic departures left less than 15 minutes late, and 79.3% reached their destination on time. The national figures that month were 79.9% and 79.3%.

How does that compare with a year earlier?

In March 2024, 90.5% of 656 departures left on time and 0.3% were cancelled, against 82.4% and 1.8% in March 2025.

Provenance

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