Route · ACK → BOS · 2020–2025 BTS data
Nantucket to Boston
The ACK–BOS corridor (Nantucket, MA → Boston, MA) runs behind the national average, served by 1 carrier across roughly 91 miles.
Data updated 2026-06-13
- 75.7%
- On-time
- -3.3 pts
- vs US avg
- 83 min
- Delay when late
- 894
- Flights
Cancelled
3.4%
Best Month
Aug 2021 87%
Worst Month
Jul 2025 65%
Distance
91 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Sep 2025 | 32 | 20 | 0 | 0 | B6 |
| Aug 2025 | 62 | 9 | 0 | 0 | B6 |
| Jul 2025 | 62 | 22 | 1 | 0 | B6 |
| Jun 2025 | 37 | 7 | 3 | 0 | B6 |
| Sep 2024 | 32 | 11 | 0 | 0 | B6 |
| Aug 2024 | 54 | 13 | 3 | 0 | B6 |
| Jul 2024 | 52 | 8 | 2 | 0 | B6 |
| Jun 2024 | 44 | 10 | 1 | 0 | B6 |
| Sep 2023 | 33 | 8 | 2 | 0 | B6 |
| Aug 2023 | 43 | 14 | 0 | 0 | B6 |
| Jul 2023 | 45 | 20 | 4 | 0 | B6 |
| Jun 2023 | 43 | 9 | 3 | 0 | B6 |
| Sep 2022 | 32 | 3 | 0 | 0 | B6 |
| Aug 2022 | 39 | 9 | 0 | 0 | B6 |
| Jul 2022 | 48 | 10 | 0 | 0 | B6 |
| Sep 2021 | 33 | 8 | 0 | 0 | B6 |
| Aug 2021 | 62 | 8 | 2 | 0 | B6 |
| Jul 2021 | 62 | 21 | 5 | 0 | B6 |
| Jun 2021 | 48 | 4 | 4 | 0 | B6 |
| Jul 2020 | 31 | 3 | 0 | 0 | B6 |
Cancellation Rate
3.4%
30 of 894 flights
Diversion Rate
0.0%
0 of 894 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
ACK - Nantucket
Full on-time, delay-cause, and seasonal performance for Nantucket, MA.
Origin airport →BOS - Boston
Full on-time, delay-cause, and seasonal performance for Boston, MA.
Destination airport →Compare the two airports
See ACK and BOS side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to ACK–BOS.
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What the Data Says About ACK to BOS
The Nantucket to Boston corridor (ACK to BOS) posts a 75.7% on-time rate on the lower edge of the average band, based on 894 tracked flights. Late flights run 82.5 minutes behind on average. 1 carrier cover the 91-mile route; over the last 24 months, 30 of 894 flights were cancelled (3.4%) and 0.0% diverted.
The monthly split is wide on this route: Aug 2021 posted the strongest performance at 87% on-time, while Jul 2025 came in at just 65% - a 23-point swing worth factoring into travel timing.
Frequently Asked Questions
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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.