Piedmont Triad International in September 2025

90.3%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 September 2025, reporting carriers scheduled 914 domestic departures from Piedmont Triad International (GSO). 90.3% left less than 15 minutes late and 89.3% reached their destination on time; 0.7% were cancelled.

Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so GSO departures were 7.2 points above the national departure figure.

A year earlier, in September 2024, the airport had 1,064 departures with 86.2% leaving on time: a change of +4.1 points, with flights down 14%.

Flights arriving at GSO that month were on time 85.0% of the time (914 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 46%, late-arriving aircraft 37% and national aviation system 10%.

On time 89.3%
Arrived 15+ minutes late 10.1%
Cancelled 0.7%
Diverted 0.0%

Every scheduled departure from GSO in September 2025, judged by arrival at the destination.

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

Measure	Sep 2025	Sep 2024	GSO, 12 months to Jul 2026	All reported flights, Sep 2025
Departed on time	90.3%	86.2%	79.6%	83.1%
Arrived on time	89.3%	83.6%	78.3%	82.8%
Cancelled	0.7%	1.0%	3.3%	0.5%
Average departure delay (late minutes only)	11.7 min	10.7 min	16.0 min	12.2 min
Scheduled departures a day	31	36	29	18,748
Scheduled departures	914	1,064	10,480	562,439

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
DL Delta Air Lines	241	26%	95.4%	-14.2 min	0.0%
YX Republic Airline	174	19%	86.2%	-0.1 min	1.7%
MQ Envoy Air	160	18%	91.9%	-3.6 min	0.0%
AA American Airlines	137	15%	86.9%	5.9 min	2.2%
OO SkyWest Airlines	100	11%	89.0%	-3.6 min	0.0%
OH PSA Airlines	93	10%	81.7%	19.6 min	0.0%
G4 Allegiant Air	9	1%	55.6%	39.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
GSO–ATL	Greensboro/High Point to Atlanta	239	95.4%	-14.1 min	0.0%
GSO–LGA	Greensboro/High Point to New York	164	86.0%	-0.5 min	1.8%
GSO–ORD	Greensboro/High Point to Chicago	127	87.4%	-1.2 min	0.0%
GSO–CLT	Greensboro/High Point to Charlotte	107	92.5%	-10.6 min	0.0%
GSO–DFW	Greensboro/High Point to Dallas/Fort Worth	90	83.3%	18.2 min	3.3%
GSO–DCA	Greensboro/High Point to Washington	80	82.5%	22.8 min	0.0%
GSO–DEN	Greensboro/High Point to Denver	30	90.0%	-7.2 min	0.0%
GSO–MIA	Greensboro/High Point to Miami	30	100.0%	-4.6 min	0.0%
GSO–PHL	Greensboro/High Point to Philadelphia	19	84.2%	-4.8 min	0.0%
GSO–DTW	Greensboro/High Point to Detroit	15	100.0%	-8.3 min	0.0%
GSO–PIE	Greensboro/High Point to St. Petersburg	9	55.6%	39.0 min	0.0%
GSO–EWR	Greensboro/High Point to Newark	4	75.0%	34.3 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), September 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2025	Minutes
Air carrier	45.9%	34.3%	4,620
Late-arriving aircraft	36.9%	37.4%	3,714
National Aviation System	9.7%	22.6%	976
Extreme weather	7.5%	5.6%	752
Security	0.0%	0.1%	0

10,062 delay minutes on 92 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 GSO on time in September 2025?

90.3% of 914 scheduled domestic departures left less than 15 minutes late, and 89.3% reached their destination on time. The national figures that month were 83.1% and 82.8%.

How does that compare with a year earlier?

In September 2024, 86.2% of 1,064 departures left on time and 1.0% were cancelled, against 90.3% and 0.7% in September 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for GSO · methodology · corrections.