James M Cox/Dayton International in April 2026

81.2%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 April 2026, reporting carriers scheduled 677 domestic departures from James M Cox/Dayton International (DAY). 81.2% left less than 15 minutes late and 80.5% reached their destination on time; 2.1% were cancelled.

Nationally that month, 79.1% of flights departed on time and 78.9% arrived on time, so DAY departures were 2.1 points above the national departure figure.

A year earlier, in April 2025, the airport had 675 departures with 84.4% leaving on time: a change of −3.2 points, with flights up 0%.

Flights arriving at DAY that month were on time 74.4% of the time (677 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 41%, late-arriving aircraft 37% and national aviation system 15%.

On time 80.5%
Arrived 15+ minutes late 17.1%
Cancelled 2.1%
Diverted 0.3%

Every scheduled departure from DAY in April 2026, judged by arrival at the destination.

April 2026 against a year earlier, the airport's year and the nation

Measure	Apr 2026	Apr 2025	DAY, 12 months to Jul 2026	All reported flights, Apr 2026
Departed on time	81.2%	84.4%	78.8%	79.1%
Arrived on time	80.5%	78.8%	77.4%	78.9%
Cancelled	2.1%	1.5%	2.7%	0.9%
Average departure delay (late minutes only)	21.2 min	13.5 min	20.9 min	14.5 min
Scheduled departures a day	23	23	22	19,931
Scheduled departures	677	675	7,918	597,919

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OH PSA Airlines	397	59%	80.4%	7.2 min	1.0%
DL Delta Air Lines	120	18%	85.0%	-1.5 min	1.7%
YX Republic Airline	45	7%	84.4%	-5.0 min	8.9%
OO SkyWest Airlines	30	4%	63.3%	15.7 min	10.0%
UA United Airlines	30	4%	100.0%	-16.1 min	0.0%
MQ Envoy Air	29	4%	55.2%	25.1 min	3.4%
G4 Allegiant Air	26	4%	80.8%	68.7 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
DAY–ORD	Dayton to Chicago	164	73.2%	14.5 min	6.1%
DAY–ATL	Dayton to Atlanta	120	85.0%	-1.5 min	1.7%
DAY–DFW	Dayton to Dallas/Fort Worth	113	78.8%	7.6 min	0.9%
DAY–CLT	Dayton to Charlotte	112	83.9%	3.8 min	0.0%
DAY–DCA	Dayton to Washington	82	73.2%	6.5 min	1.2%
DAY–DEN	Dayton to Denver	30	100.0%	-16.1 min	0.0%
DAY–PHL	Dayton to Philadelphia	30	96.7%	-10.1 min	0.0%
DAY–PGD	Dayton to Punta Gorda	9	88.9%	-6.7 min	0.0%
DAY–SFB	Dayton to Sanford	9	88.9%	97.0 min	0.0%
DAY–PIE	Dayton to St. Petersburg	8	62.5%	121.8 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), April 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2026	Minutes
Air carrier	40.7%	33.5%	5,770
Late-arriving aircraft	36.6%	40.4%	5,193
National Aviation System	15.3%	21.0%	2,175
Extreme weather	7.4%	5.0%	1,045
Security	0.0%	0.1%	0

14,183 delay minutes on 116 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 April 2026?

81.2% of 677 scheduled domestic departures left less than 15 minutes late, and 80.5% reached their destination on time. The national figures that month were 79.1% and 78.9%.

How does that compare with a year earlier?

In April 2025, 84.4% of 675 departures left on time and 1.5% were cancelled, against 81.2% and 2.1% in April 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 2026; 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.