James M Cox/Dayton International in January 2026

71.3%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 January 2026, reporting carriers scheduled 630 domestic departures from James M Cox/Dayton International (DAY). 71.3% left less than 15 minutes late and 71.0% reached their destination on time; 7.6% were cancelled.

Nationally that month, 75.6% of flights departed on time and 75.3% arrived on time, so DAY departures were 4.3 points below the national departure figure.

A year earlier, in January 2025, the airport had 581 departures with 74.5% leaving on time: a change of −3.2 points, with flights up 8%.

Flights arriving at DAY that month were on time 66.2% of the time (631 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 53%, air carrier 25% and national aviation system 12%.

On time 71.0%
Arrived 15+ minutes late 21.0%
Cancelled 7.6%
Diverted 0.5%

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

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

Measure	Jan 2026	Jan 2025	DAY, 12 months to Jul 2026	All reported flights, Jan 2026
Departed on time	71.3%	74.5%	78.8%	75.6%
Arrived on time	71.0%	71.1%	77.4%	75.3%
Cancelled	7.6%	3.8%	2.7%	4.7%
Average departure delay (late minutes only)	28.9 min	29.8 min	20.9 min	16.7 min
Scheduled departures a day	21	19	22	18,133
Scheduled departures	630	581	7,918	544,003

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OH PSA Airlines	430	68%	70.0%	17.6 min	7.4%
DL Delta Air Lines	97	15%	79.4%	-4.5 min	8.2%
OO SkyWest Airlines	73	12%	63.0%	8.9 min	9.6%
G4 Allegiant Air	19	3%	68.4%	8.6 min	5.3%
UA United Airlines	6	1%	100.0%	-19.7 min	0.0%
MQ Envoy Air	5	1%	80.0%	59.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
DAY–ORD	Dayton to Chicago	143	58.7%	33.0 min	6.3%
DAY–CLT	Dayton to Charlotte	119	75.6%	1.9 min	9.2%
DAY–DFW	Dayton to Dallas/Fort Worth	113	75.2%	8.0 min	7.1%
DAY–ATL	Dayton to Atlanta	97	79.4%	-4.5 min	8.2%
DAY–DCA	Dayton to Washington	78	57.7%	42.9 min	10.3%
DAY–DEN	Dayton to Denver	31	87.1%	-13.3 min	6.5%
DAY–PHL	Dayton to Philadelphia	30	86.7%	-8.6 min	3.3%
DAY–PGD	Dayton to Punta Gorda	9	55.6%	20.9 min	11.1%
DAY–PIE	Dayton to St. Petersburg	9	88.9%	-5.0 min	0.0%
DAY–SFB	Dayton to Sanford	1	0.0%	32.0 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), January 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jan 2026	Minutes
Air carrier	25.1%	37.3%	4,004
Late-arriving aircraft	53.0%	35.0%	8,443
National Aviation System	12.2%	18.0%	1,938
Extreme weather	9.7%	9.6%	1,547
Security	0.0%	0.1%	0

15,932 delay minutes on 132 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 January 2026?

71.3% of 630 scheduled domestic departures left less than 15 minutes late, and 71.0% reached their destination on time. The national figures that month were 75.6% and 75.3%.

How does that compare with a year earlier?

In January 2025, 74.5% of 581 departures left on time and 3.8% were cancelled, against 71.3% and 7.6% in January 2026.

Provenance

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