Frederick Douglass Grtr Rochester International in May 2025

76.7%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 May 2025, reporting carriers scheduled 821 domestic departures from Frederick Douglass Grtr Rochester International (ROC). 76.7% left less than 15 minutes late and 76.0% reached their destination on time; 1.1% were cancelled.

Nationally that month, 76.7% of flights departed on time and 75.4% arrived on time, so ROC departures were level with the national departure figure.

A year earlier, in May 2024, the airport had 1,026 departures with 79.4% leaving on time: a change of −2.7 points, with flights down 20%.

Flights arriving at ROC that month were on time 72.9% of the time (813 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 43%, air carrier 31% and national aviation system 25%.

On time 76.0%
Arrived 15+ minutes late 22.5%
Cancelled 1.1%
Diverted 0.4%

Every scheduled departure from ROC in May 2025, judged by arrival at the destination.

May 2025 against a year earlier, the airport's year and the nation

Measure	May 2025	May 2024	ROC, 12 months to Jul 2026	All reported flights, May 2025
Departed on time	76.7%	79.4%	75.3%	76.7%
Arrived on time	76.0%	80.5%	74.8%	75.4%
Cancelled	1.1%	0.9%	2.7%	1.0%
Average departure delay (late minutes only)	16.3 min	16.2 min	19.9 min	17.5 min
Scheduled departures a day	27	34	28	20,188
Scheduled departures	821	1,026	10,281	605,648

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	170	21%	70.0%	12.2 min	0.0%
OH PSA Airlines	154	19%	69.5%	15.3 min	2.6%
MQ Envoy Air	122	15%	82.8%	3.1 min	0.8%
DL Delta Air Lines	91	11%	69.2%	9.7 min	1.1%
UA United Airlines	62	8%	79.0%	3.6 min	0.0%
B6 JetBlue Airways	60	7%	78.3%	19.9 min	1.7%
AA American Airlines	58	7%	94.8%	14.6 min	0.0%
NK Spirit Airlines	51	6%	72.5%	1.6 min	2.0%
YX Republic Airline	44	5%	90.9%	-6.6 min	2.3%
OO SkyWest Airlines	6	1%	50.0%	50.2 min	0.0%
G4 Allegiant Air	3	0%	100.0%	-11.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ROC–ORD	Rochester to Chicago	194	82.0%	3.0 min	0.5%
ROC–DCA	Rochester to Washington	119	70.6%	15.4 min	3.4%
ROC–BWI	Rochester to Baltimore	93	82.8%	4.9 min	0.0%
ROC–CLT	Rochester to Charlotte	93	83.9%	14.6 min	0.0%
ROC–ATL	Rochester to Atlanta	91	69.2%	9.7 min	1.1%
ROC–JFK	Rochester to New York	60	78.3%	19.9 min	1.7%
ROC–MCO	Rochester to Orlando	60	58.3%	18.7 min	1.7%
ROC–EWR	Rochester to Newark	37	83.8%	2.0 min	2.7%
ROC–LAS	Rochester to Las Vegas	31	51.6%	16.9 min	0.0%
ROC–FLL	Rochester to Fort Lauderdale	23	78.3%	-7.6 min	0.0%
ROC–TPA	Rochester to Tampa	10	60.0%	27.2 min	0.0%
ROC–MYR	Rochester to Myrtle Beach	4	100.0%	-6.7 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), May 2025.

Delay causes

BTS cause category	Share of delay minutes	National, May 2025	Minutes
Air carrier	31.3%	29.3%	3,905
Late-arriving aircraft	42.8%	37.8%	5,344
National Aviation System	24.7%	25.9%	3,077
Extreme weather	1.2%	6.9%	156
Security	0.0%	0.1%	0

12,482 delay minutes on 185 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 ROC on time in May 2025?

76.7% of 821 scheduled domestic departures left less than 15 minutes late, and 76.0% reached their destination on time. The national figures that month were 76.7% and 75.4%.

How does that compare with a year earlier?

In May 2024, 79.4% of 1,026 departures left on time and 0.9% were cancelled, against 76.7% and 1.1% in May 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for ROC · methodology · corrections.