Rochester International in September 2025

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 2025, reporting carriers scheduled 120 domestic departures from Rochester International (RST). 86.7% left less than 15 minutes late and 85.0% reached their destination on time; 0.8% were cancelled.

Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so RST departures were 3.6 points above the national departure figure.

A year earlier, in September 2024, the airport had 138 departures with 87.0% leaving on time: a change of −0.3 points, with flights down 13%.

Flights arriving at RST that month were on time 82.6% of the time (121 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, national aviation system 42%, air carrier 39% and late-arriving aircraft 10%.

On time 85.0%
Arrived 15+ minutes late 14.2%
Cancelled 0.8%
Diverted 0.0%

Every scheduled departure from RST 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	RST, 12 months to Jul 2026	All reported flights, Sep 2025
Departed on time	86.7%	87.0%	70.3%	83.1%
Arrived on time	85.0%	84.8%	67.6%	82.8%
Cancelled	0.8%	0.0%	4.0%	0.5%
Average departure delay (late minutes only)	9.5 min	13.0 min	27.9 min	12.2 min
Scheduled departures a day	4	5	4	18,748
Scheduled departures	120	138	1,365	562,439

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	90	75%	84.4%	1.1 min	0.0%
MQ Envoy Air	30	25%	86.7%	1.4 min	3.3%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
RST–ORD	Rochester to Chicago	72	86.1%	4.1 min	1.4%
RST–MSP	Rochester to Minneapolis	48	83.3%	-3.2 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 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2025	Minutes
Air carrier	38.5%	34.3%	444
Late-arriving aircraft	10.2%	37.4%	117
National Aviation System	42.3%	22.6%	487
Extreme weather	9.0%	5.6%	104
Security	0.0%	0.1%	0

1,152 delay minutes on 17 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 RST on time in September 2025?

86.7% of 120 scheduled domestic departures left less than 15 minutes late, and 85.0% 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, 87.0% of 138 departures left on time and 0.0% were cancelled, against 86.7% and 0.8% 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 RST · methodology · corrections.