Route · DCA → ACK · 2020–2025 BTS data
Washington to Nantucket
The DCA–ACK corridor (Washington, DC → Nantucket, MA) runs ahead of the national average, served by 3 carriers across roughly 405 miles.
Data updated 2026-06-13
- 82.6%
- On-time
- +3.6 pts
- vs US avg
- 76 min
- Delay when late
- 1,353
- Flights
Cancelled
3.5%
Best Month
Aug 2020 98%
Worst Month
Aug 2023 72%
Distance
405 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Sep 2025 | 34 | 13 | 0 | 0 | YX,B6 |
| Aug 2025 | 98 | 10 | 0 | 1 | YX,B6 |
| Jul 2025 | 96 | 22 | 7 | 2 | B6,YX |
| Jun 2025 | 45 | 5 | 4 | 0 | B6,YX |
| Sep 2024 | 35 | 1 | 0 | 0 | YX,B6 |
| Aug 2024 | 90 | 17 | 2 | 2 | B6,YX |
| Jul 2024 | 97 | 15 | 3 | 1 | B6,YX |
| Jun 2024 | 52 | 10 | 0 | 2 | B6,YX |
| Sep 2023 | 37 | 12 | 2 | 1 | B6,MQ,YX |
| Aug 2023 | 82 | 23 | 0 | 0 | B6,MQ,YX |
| Jul 2023 | 98 | 22 | 8 | 5 | B6,MQ,YX |
| Jun 2023 | 47 | 21 | 3 | 1 | B6,MQ,YX |
| Sep 2022 | 41 | 10 | 0 | 0 | YX,B6 |
| Aug 2022 | 79 | 9 | 0 | 2 | B6,YX |
| Jul 2022 | 90 | 12 | 3 | 0 | YX,B6 |
| Jun 2022 | 64 | 10 | 4 | 2 | YX,B6 |
| Aug 2021 | 57 | 2 | 3 | 0 | YX,B6 |
| Jul 2021 | 61 | 12 | 4 | 0 | YX,B6 |
| Jun 2021 | 43 | 3 | 0 | 1 | YX,B6 |
| Aug 2020 | 55 | 1 | 4 | 0 | B6,YX |
| Jul 2020 | 52 | 6 | 0 | 2 | B6,YX |
Cancellation Rate
3.5%
47 of 1,353 flights
Diversion Rate
1.6%
22 of 1,353 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
DCA - Washington
Full on-time, delay-cause, and seasonal performance for Washington, DC.
Origin airport →ACK - Nantucket
Full on-time, delay-cause, and seasonal performance for Nantucket, MA.
Destination airport →Compare the two airports
See DCA 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 DCA–ACK.
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What the Data Says About DCA to ACK
Bureau of Transportation Statistics records show Washington to Nantucket (DCA to ACK) running a 82.6% on-time rate over 1,353 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 75.7 minutes. The 405-mile corridor is served by 3 carriers, and over the last 24 months 3.5% of 1,353 flights were cancelled, 1.6% diverted.
The monthly split is wide on this route: Aug 2020 posted the strongest performance at 98% on-time, while Aug 2023 came in at just 72% - a 26-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.