Buffalo Niagara International in September 2023

78.8%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 1,879 domestic departures from Buffalo Niagara International (BUF). 78.8% left less than 15 minutes late and 76.8% reached their destination on time; 3.2% were cancelled.

Nationally that month, 80.5% of flights departed on time and 80.1% arrived on time, so BUF departures were 1.7 points below the national departure figure.

Flights arriving at BUF that month were on time 74.0% of the time (1,882 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 45%, national aviation system 29% and air carrier 19%.

On time 76.8%
Arrived 15+ minutes late 19.8%
Cancelled 3.2%
Diverted 0.2%

Every scheduled departure from BUF 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	BUF, 12 months to Jul 2026	All reported flights, Sep 2023
Departed on time	78.8%	—	75.6%	80.5%
Arrived on time	76.8%	—	75.5%	80.1%
Cancelled	3.2%	—	2.6%	1.2%
Average departure delay (late minutes only)	17.5 min	—	18.8 min	14.1 min
Scheduled departures a day	63	—	57	18,978
Scheduled departures	1,879	—	20,726	569,338

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	379	20%	81.8%	3.4 min	0.8%
B6 JetBlue Airways	320	17%	61.3%	28.8 min	3.1%
YX Republic Airline	233	12%	76.4%	2.6 min	10.7%
9E Endeavor Air	232	12%	76.3%	17.4 min	8.2%
DL Delta Air Lines	217	12%	82.5%	-0.4 min	0.9%
AA American Airlines	173	9%	82.7%	6.2 min	0.0%
F9 Frontier Airlines	123	7%	74.8%	8.9 min	1.6%
UA United Airlines	90	5%	85.6%	0.2 min	0.0%
OH PSA Airlines	39	2%	87.2%	-5.4 min	0.0%
MQ Envoy Air	37	2%	75.7%	5.8 min	0.0%
OO SkyWest Airlines	36	2%	80.6%	6.7 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BUF–JFK	Buffalo to New York	263	65.0%	27.9 min	6.5%
BUF–LGA	Buffalo to New York	203	76.8%	12.5 min	10.8%
BUF–BWI	Buffalo to Baltimore	150	82.0%	3.5 min	2.0%
BUF–ORD	Buffalo to Chicago	141	80.1%	5.7 min	0.0%
BUF–ATL	Buffalo to Atlanta	139	76.3%	5.6 min	0.7%
BUF–MCO	Buffalo to Orlando	130	76.2%	12.9 min	0.0%
BUF–DTW	Buffalo to Detroit	114	86.8%	-2.9 min	0.9%
BUF–EWR	Buffalo to Newark	110	78.2%	-3.5 min	8.2%
BUF–CLT	Buffalo to Charlotte	86	79.1%	11.0 min	0.0%
BUF–DCA	Buffalo to Washington	85	81.2%	-2.0 min	5.9%
BUF–BOS	Buffalo to Boston	84	64.3%	29.5 min	2.4%
BUF–MDW	Buffalo to Chicago	82	86.6%	-0.2 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	18.8%	36.4%	5,704
Late-arriving aircraft	45.1%	38.3%	13,655
National Aviation System	29.0%	19.9%	8,799
Extreme weather	7.1%	5.1%	2,150
Security	0.0%	0.2%	0

30,308 delay minutes on 372 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 BUF on time in September 2023?

78.8% of 1,879 scheduled domestic departures left less than 15 minutes late, and 76.8% 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 BUF · methodology · corrections.