—
Nantucket (ACK) departure delays
1,640 departures · 8 routes · January 2025 – August 2026
77.64%
Left on time
Within 15 minutes of schedule
3.72%
Cancelled
Share of departures
97 min
When late, late by
Average delayed departure
—
Rank
Among graded US airports
What the record says about ACK
ACK runs about as well as the average airport here.
Which airlines run best out of ACK
| Airline | Departures | On time |
|---|---|---|
| JetBlue Airways | 893 | 75.6% |
| Republic Airways | 712 | 71% |
Routes out of ACK
ACK → LGA
New York
419 flights · 77.56% on time
D
ACK → JFK
New York
308 flights · 69.05% on time
F
ACK → DCA
Washington
285 flights · 76.67% on time
D
ACK → BOS
Boston
253 flights · 71.03% on time
D
ACK → HPN
White Plains
234 flights · 78.95% on time
C
ACK → PHL
Philadelphia
95 flights · 55.68% on time
—
ACK → ORD
Chicago
31 flights · 57.14% on time
—
ACK → CLT
Charlotte
15 flights · 66.67% on time
—
Common questions
How bad are delays at Nantucket (ACK)?
77.64% of departures from ACK left within 15 minutes of schedule across 1,640 flights. That is about average.
Which airline is most punctual from ACK?
JetBlue Airways, at 75.6% on time from this airport. The least punctual was Republic Airways at 71%.
How often are flights from ACK cancelled?
3.72% of scheduled departures did not operate.
Month by month
Jul 2025
peak 85
Jun 2026