Nantucket Memorial in August 2023

79.1%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 August 2023, reporting carriers scheduled 406 domestic departures from Nantucket Memorial (ACK). 79.1% left less than 15 minutes late and 78.8% reached their destination on time; 1.0% were cancelled.

Nationally that month, 76.7% of flights departed on time and 76.9% arrived on time, so ACK departures were 2.4 points above the national departure figure.

Flights arriving at ACK that month were on time 79.1% of the time (406 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 56%, air carrier 27% and national aviation system 17%.

On time 78.8%
Arrived 15+ minutes late 20.2%
Cancelled 1.0%
Diverted 0.0%

Every scheduled departure from ACK in August 2023, judged by arrival at the destination.

August 2023 against a year earlier, the airport's year and the nation

Measure	Aug 2023	Year earlier	ACK, 12 months to Jul 2026	All reported flights, Aug 2023
Departed on time	79.1%	—	73.0%	76.7%
Arrived on time	78.8%	—	69.6%	76.9%
Cancelled	1.0%	—	5.3%	1.5%
Average departure delay (late minutes only)	20.0 min	—	20.9 min	17.3 min
Scheduled departures a day	14	—	5	20,100
Scheduled departures	406	—	1,690	602,987

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
B6 JetBlue Airways	219	54%	75.3%	16.0 min	0.9%
YX Republic Airline	162	40%	85.2%	0.7 min	1.2%
MQ Envoy Air	25	6%	68.0%	13.1 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ACK–LGA	Nantucket to New York	114	81.6%	7.4 min	0.0%
ACK–JFK	Nantucket to New York	97	73.2%	17.3 min	2.1%
ACK–DCA	Nantucket to Washington	82	79.3%	9.3 min	1.2%
ACK–BOS	Nantucket to Boston	43	67.4%	21.7 min	0.0%
ACK–HPN	Nantucket to White Plains	31	93.5%	-9.1 min	0.0%
ACK–PHL	Nantucket to Philadelphia	31	87.1%	-1.4 min	3.2%
ACK–CLT	Nantucket to Charlotte	4	75.0%	-2.7 min	0.0%
ACK–ORD	Nantucket to Chicago	4	75.0%	20.0 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), August 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2023	Minutes
Air carrier	27.0%	36.7%	2,065
Late-arriving aircraft	55.6%	42.2%	4,258
National Aviation System	17.2%	15.7%	1,317
Extreme weather	0.2%	5.1%	16
Security	0.1%	0.2%	5

7,661 delay minutes on 82 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 ACK on time in August 2023?

79.1% of 406 scheduled domestic departures left less than 15 minutes late, and 78.8% reached their destination on time. The national figures that month were 76.7% and 76.9%.

How does that compare with a year earlier?

August 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 August 2023; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for ACK · methodology · corrections.