Raleigh-Durham International in September 2023

79.4%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 September 2023, reporting carriers scheduled 5,255 domestic departures from Raleigh-Durham International (RDU). 79.4% left less than 15 minutes late and 78.8% reached their destination on time; 2.3% were cancelled.

Nationally that month, 80.5% of flights departed on time and 80.1% arrived on time, so RDU departures were 1.1 points below the national departure figure.

Flights arriving at RDU that month were on time 76.9% of the time (5,260 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 41%, air carrier 33% and national aviation system 22%.

On time 78.8%
Arrived 15+ minutes late 18.7%
Cancelled 2.3%
Diverted 0.2%

Every scheduled departure from RDU 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	RDU, 12 months to Jul 2026	All reported flights, Sep 2023
Departed on time	79.4%	—	77.5%	80.5%
Arrived on time	78.8%	—	77.1%	80.1%
Cancelled	2.3%	—	2.3%	1.2%
Average departure delay (late minutes only)	17.0 min	—	17.6 min	14.1 min
Scheduled departures a day	175	—	152	18,978
Scheduled departures	5,255	—	55,461	569,338

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AA American Airlines	954	18%	79.0%	14.1 min	1.4%
DL Delta Air Lines	944	18%	85.7%	1.8 min	0.8%
WN Southwest Airlines	702	13%	83.9%	0.5 min	0.4%
9E Endeavor Air	559	11%	79.4%	-0.8 min	5.2%
UA United Airlines	526	10%	84.2%	-0.1 min	1.0%
YX Republic Airline	524	10%	78.1%	3.2 min	6.1%
F9 Frontier Airlines	495	9%	65.5%	19.5 min	2.8%
B6 JetBlue Airways	295	6%	55.9%	43.4 min	5.1%
MQ Envoy Air	139	3%	81.3%	2.2 min	0.0%
AS Alaska Airlines	60	1%	80.0%	-2.3 min	3.3%
NK Spirit Airlines	33	1%	66.7%	13.3 min	0.0%
OH PSA Airlines	23	0%	78.3%	22.8 min	4.3%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
RDU–JFK	Raleigh/Durham to New York	390	72.1%	13.1 min	6.4%
RDU–ATL	Raleigh/Durham to Atlanta	386	88.6%	-0.7 min	0.5%
RDU–LGA	Raleigh/Durham to New York	337	74.5%	16.8 min	6.2%
RDU–BOS	Raleigh/Durham to Boston	274	62.8%	29.4 min	5.5%
RDU–CLT	Raleigh/Durham to Charlotte	243	81.5%	12.1 min	0.0%
RDU–ORD	Raleigh/Durham to Chicago	240	84.6%	-0.4 min	0.8%
RDU–DCA	Raleigh/Durham to Washington	239	78.7%	2.9 min	2.1%
RDU–EWR	Raleigh/Durham to Newark	235	73.6%	2.0 min	8.5%
RDU–MCO	Raleigh/Durham to Orlando	214	69.2%	20.8 min	0.5%
RDU–DEN	Raleigh/Durham to Denver	208	82.2%	1.7 min	0.0%
RDU–PHL	Raleigh/Durham to Philadelphia	206	64.1%	27.8 min	3.9%
RDU–BNA	Raleigh/Durham to Nashville	200	92.5%	-3.9 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 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2023	Minutes
Air carrier	32.5%	36.4%	26,745
Late-arriving aircraft	41.3%	38.3%	34,013
National Aviation System	21.5%	19.9%	17,699
Extreme weather	4.6%	5.1%	3,788
Security	0.1%	0.2%	91

82,336 delay minutes on 982 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 RDU on time in September 2023?

79.4% of 5,255 scheduled domestic departures left less than 15 minutes late, and 78.8% 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 RDU · methodology · corrections.