Buffalo Niagara International in September 2024

88.1%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 2024, reporting carriers scheduled 1,980 domestic departures from Buffalo Niagara International (BUF). 88.1% left less than 15 minutes late and 87.5% reached their destination on time; 0.3% were cancelled.

Nationally that month, 84.4% of flights departed on time and 83.9% arrived on time, so BUF departures were 3.7 points above the national departure figure.

A year earlier, in September 2023, the airport had 1,879 departures with 78.8% leaving on time: a change of +9.3 points, with flights up 5%.

Flights arriving at BUF that month were on time 84.2% of the time (1,982 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 40%, air carrier 33% and national aviation system 20%.

On time 87.5%
Arrived 15+ minutes late 12.2%
Cancelled 0.3%
Diverted 0.1%

Every scheduled departure from BUF in September 2024, judged by arrival at the destination.

September 2024 against a year earlier, the airport's year and the nation

Measure	Sep 2024	Sep 2023	BUF, 12 months to Jul 2026	All reported flights, Sep 2024
Departed on time	88.1%	78.8%	75.6%	84.4%
Arrived on time	87.5%	76.8%	75.5%	83.9%
Cancelled	0.3%	3.2%	2.6%	0.6%
Average departure delay (late minutes only)	8.0 min	17.5 min	18.8 min	10.6 min
Scheduled departures a day	66	63	57	19,421
Scheduled departures	1,980	1,879	20,726	582,622

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	466	24%	90.6%	-4.4 min	0.4%
B6 JetBlue Airways	286	14%	84.3%	-1.1 min	0.0%
AA American Airlines	260	13%	84.6%	6.1 min	0.0%
9E Endeavor Air	194	10%	91.8%	-10.3 min	0.0%
DL Delta Air Lines	189	10%	89.4%	-8.0 min	0.0%
YX Republic Airline	183	9%	94.0%	-6.8 min	0.0%
OH PSA Airlines	140	7%	80.0%	17.1 min	0.0%
F9 Frontier Airlines	93	5%	76.3%	-2.8 min	3.2%
UA United Airlines	91	5%	85.7%	2.0 min	0.0%
OO SkyWest Airlines	72	4%	87.5%	-1.7 min	0.0%
MQ Envoy Air	6	0%	100.0%	-10.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BUF–JFK	Buffalo to New York	267	87.3%	-5.6 min	0.0%
BUF–LGA	Buffalo to New York	177	96.6%	-10.6 min	0.0%
BUF–ORD	Buffalo to Chicago	160	83.8%	10.4 min	0.0%
BUF–BWI	Buffalo to Baltimore	147	95.2%	-7.3 min	0.7%
BUF–ATL	Buffalo to Atlanta	134	82.1%	-2.5 min	0.7%
BUF–MCO	Buffalo to Orlando	125	84.8%	-1.6 min	0.0%
BUF–CLT	Buffalo to Charlotte	117	85.5%	2.0 min	0.0%
BUF–DCA	Buffalo to Washington	116	78.4%	18.9 min	0.0%
BUF–DTW	Buffalo to Detroit	111	89.2%	-4.5 min	0.0%
BUF–MDW	Buffalo to Chicago	89	88.8%	-1.8 min	0.0%
BUF–EWR	Buffalo to Newark	88	89.8%	-6.0 min	0.0%
BUF–BOS	Buffalo to Boston	87	86.2%	-0.8 min	0.0%

By scheduled departure hour

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), September 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2024	Minutes
Air carrier	32.8%	38.6%	4,738
Late-arriving aircraft	40.0%	38.4%	5,778
National Aviation System	20.0%	18.2%	2,883
Extreme weather	7.1%	4.8%	1,023
Security	0.1%	0.1%	13

14,435 delay minutes on 242 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 2024?

88.1% of 1,980 scheduled domestic departures left less than 15 minutes late, and 87.5% reached their destination on time. The national figures that month were 84.4% and 83.9%.

How does that compare with a year earlier?

In September 2023, 78.8% of 1,879 departures left on time and 3.2% were cancelled, against 88.1% and 0.3% in September 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2024; 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.