Route · BOS → ACK · 2020–2025 BTS data
Boston to Nantucket
The BOS–ACK corridor (Boston, MA → Nantucket, MA) runs ahead of the national average, served by 1 carrier across roughly 91 miles.
Data updated 2026-06-13
- 80.4%
- On-time
- +1.4 pts
- vs US avg
- 82 min
- Delay when late
- 895
- Flights
Cancelled
2.8%
Best Month
Aug 2021 94%
Worst Month
Jul 2021 65%
Distance
91 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Sep 2025 | 32 | 4 | 0 | 0 | B6 |
| Aug 2025 | 62 | 7 | 0 | 0 | B6 |
| Jul 2025 | 62 | 12 | 0 | 0 | B6 |
| Jun 2025 | 37 | 14 | 1 | 0 | B6 |
| Sep 2024 | 32 | 5 | 0 | 0 | B6 |
| Aug 2024 | 54 | 13 | 1 | 0 | B6 |
| Jul 2024 | 52 | 6 | 0 | 0 | B6 |
| Jun 2024 | 44 | 4 | 1 | 1 | B6 |
| Sep 2023 | 33 | 5 | 2 | 0 | B6 |
| Aug 2023 | 43 | 16 | 0 | 0 | B6 |
| Jul 2023 | 45 | 14 | 7 | 0 | B6 |
| Jun 2023 | 43 | 11 | 2 | 0 | B6 |
| Sep 2022 | 32 | 4 | 0 | 0 | B6 |
| Aug 2022 | 39 | 6 | 2 | 0 | B6 |
| Jul 2022 | 49 | 14 | 0 | 0 | B6 |
| Sep 2021 | 33 | 6 | 0 | 0 | B6 |
| Aug 2021 | 62 | 4 | 2 | 0 | B6 |
| Jul 2021 | 62 | 22 | 4 | 0 | B6 |
| Jun 2021 | 48 | 4 | 3 | 0 | B6 |
| Jul 2020 | 31 | 4 | 0 | 0 | B6 |
Cancellation Rate
2.8%
25 of 895 flights
Diversion Rate
0.1%
1 of 895 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
BOS - Boston
Full on-time, delay-cause, and seasonal performance for Boston, MA.
Origin airport →ACK - Nantucket
Full on-time, delay-cause, and seasonal performance for Nantucket, MA.
Destination airport →Compare the two airports
See BOS and ACK side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to BOS–ACK.
Routes with a similar on-time rate
What the Data Says About BOS to ACK
895 tracked flights put the BOS to ACK pairing (Boston to Nantucket) at a 80.4% on-time rate, squarely in line with the wider network. Delays that do occur run 81.5 minutes on average. Across the 91-mile route and its 1 carrier, the trailing 24 months show 2.8% cancelled and 0.1% diverted (895 flights sampled).
The monthly split is wide on this route: Aug 2021 posted the strongest performance at 94% on-time, while Jul 2021 came in at just 65% - a 29-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from BOS to ACK? ▼
What is the cancellation rate for BOS to ACK? ▼
How far is the flight from BOS to ACK? ▼
When is the best time to fly from BOS to ACK? ▼
Flight Guides
Tips and data-driven advice for choosing reliable routes.
Explore PlainFlights
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.