Nantucket Memorial in September 2023

68.8%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 231 domestic departures from Nantucket Memorial (ACK). 68.8% left less than 15 minutes late and 68.0% reached their destination on time; 9.5% were cancelled.

Nationally that month, 80.5% of flights departed on time and 80.1% arrived on time, so ACK departures were 11.7 points below the national departure figure.

Flights arriving at ACK that month were on time 69.3% of the time (231 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 61%, national aviation system 36% and air carrier 3%.

On time 68.0%
Arrived 15+ minutes late 22.5%
Cancelled 9.5%
Diverted 0.0%

Every scheduled departure from ACK 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	ACK, 12 months to Jul 2026	All reported flights, Sep 2023
Departed on time	68.8%	—	73.0%	80.5%
Arrived on time	68.0%	—	69.6%	80.1%
Cancelled	9.5%	—	5.3%	1.2%
Average departure delay (late minutes only)	21.4 min	—	20.9 min	14.1 min
Scheduled departures a day	8	—	5	18,978
Scheduled departures	231	—	1,690	569,338

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
B6 JetBlue Airways	205	89%	64.4%	16.8 min	10.7%
YX Republic Airline	21	9%	100.0%	-21.0 min	0.0%
MQ Envoy Air	5	2%	80.0%	-9.8 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ACK–JFK	Nantucket to New York	65	55.4%	29.3 min	12.3%
ACK–LGA	Nantucket to New York	60	68.3%	14.5 min	10.0%
ACK–DCA	Nantucket to Washington	37	75.7%	-3.9 min	8.1%
ACK–BOS	Nantucket to Boston	33	69.7%	6.0 min	6.1%
ACK–HPN	Nantucket to White Plains	30	76.7%	6.6 min	10.0%
ACK–PHL	Nantucket to Philadelphia	5	100.0%	-17.4 min	0.0%
ACK–ORD	Nantucket to Chicago	1	100.0%	-21.0 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), September 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2023	Minutes
Air carrier	3.3%	36.4%	150
Late-arriving aircraft	60.6%	38.3%	2,779
National Aviation System	36.1%	19.9%	1,653
Extreme weather	0.0%	5.1%	1
Security	0.0%	0.2%	0

4,583 delay minutes on 52 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 September 2023?

68.8% of 231 scheduled domestic departures left less than 15 minutes late, and 68.0% 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 ACK · methodology · corrections.