Greenville-Spartanburg International in September 2023

86.7%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 2023, reporting carriers scheduled 1,097 domestic departures from Greenville-Spartanburg International (GSP). 86.7% left less than 15 minutes late and 85.4% reached their destination on time; 1.9% were cancelled.

Nationally that month, 80.5% of flights departed on time and 80.1% arrived on time, so GSP departures were 6.2 points above the national departure figure.

Flights arriving at GSP that month were on time 80.9% of the time (1,095 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 38%, late-arriving aircraft 35% and national aviation system 24%.

On time 85.4%
Arrived 15+ minutes late 12.4%
Cancelled 1.9%
Diverted 0.3%

Every scheduled departure from GSP in September 2023, judged by arrival at the destination.

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

Measure	Sep 2023	Year earlier	GSP, 12 months to Jul 2026	All reported flights, Sep 2023
Departed on time	86.7%	—	79.0%	80.5%
Arrived on time	85.4%	—	78.9%	80.1%
Cancelled	1.9%	—	2.7%	1.2%
Average departure delay (late minutes only)	8.1 min	—	16.1 min	14.1 min
Scheduled departures a day	37	—	39	18,978
Scheduled departures	1,097	—	14,201	569,338

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OH PSA Airlines	209	19%	83.3%	-0.2 min	1.4%
DL Delta Air Lines	202	18%	94.1%	-5.3 min	0.0%
YX Republic Airline	138	13%	78.3%	3.9 min	7.2%
AA American Airlines	113	10%	77.9%	3.2 min	0.9%
WN Southwest Airlines	100	9%	93.0%	-4.2 min	0.0%
UA United Airlines	95	9%	89.5%	-8.1 min	0.0%
9E Endeavor Air	90	8%	81.1%	-7.4 min	7.8%
OO SkyWest Airlines	90	8%	85.6%	1.7 min	0.0%
MQ Envoy Air	43	4%	81.4%	1.0 min	0.0%
G4 Allegiant Air	17	2%	82.4%	-7.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
GSP–ATL	Greer to Atlanta	245	93.9%	-5.5 min	0.0%
GSP–CLT	Greer to Charlotte	183	81.4%	2.8 min	0.5%
GSP–LGA	Greer to New York	130	76.2%	-3.1 min	10.0%
GSP–ORD	Greer to Chicago	102	90.2%	-3.4 min	0.0%
GSP–EWR	Greer to Newark	89	78.7%	-1.2 min	4.5%
GSP–DCA	Greer to Washington	85	83.5%	5.5 min	1.2%
GSP–DFW	Greer to Dallas/Fort Worth	60	75.0%	6.2 min	1.7%
GSP–DTW	Greer to Detroit	54	92.6%	-7.5 min	0.0%
GSP–BWI	Greer to Baltimore	33	93.9%	-2.7 min	0.0%
GSP–DEN	Greer to Denver	30	73.3%	11.2 min	0.0%
GSP–IAH	Greer to Houston	30	96.7%	-17.1 min	0.0%
GSP–PHL	Greer to Philadelphia	30	86.7%	-7.9 min	3.3%

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 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2023	Minutes
Air carrier	37.6%	36.4%	3,021
Late-arriving aircraft	34.8%	38.3%	2,795
National Aviation System	24.1%	19.9%	1,936
Extreme weather	3.5%	5.1%	284
Security	0.0%	0.2%	0

8,036 delay minutes on 136 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 GSP on time in September 2023?

86.7% of 1,097 scheduled domestic departures left less than 15 minutes late, and 85.4% reached their destination on time. The national figures that month were 80.5% and 80.1%.

How does that compare with a year earlier?

September 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 September 2023; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for GSP · methodology · corrections.