ACK to DCA flight delays & on-time performance
Nonstop flights from Nantucket Memorial Airport to Ronald Reagan Washington National Airport · 405 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ACK or DCA right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Nantucket (ACK) to Washington (DCA) arrived on time 72% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 4.2% were cancelled, and 10% arrived an hour or more late.
- JetBlue was the most punctual airline here (75% on time); Republic Airways was the least (70%).
- Departures scheduled around 11am did best (81% on time); around 5pm did worst (62%).
- Monday was the most reliable day to fly (82% on time) and Saturday the least (69%).
- The largest source of delay minutes was late-arriving aircraft (59%).
Which airline is most on time from ACK to DCA?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| JetBlue | 75% | 4.2% | 25 min | 10.4% | 120 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 70% | 4.3% | 19 min | 10.4% | 163 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 10am77%123 flights
- 11am81%26 flights
- 12pm70%47 flights
- 4pm64%12 flights
- 5pm62%64 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday82%5.0% cancelled
- Tuesday79%10.5% cancelled
- Wednesday70%5.7% cancelled
- Thursday69%2.5% cancelled
- Friday69%0.0% cancelled
- Saturday69%4.3% cancelled
- Sunday69%2.5% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft59%
- Air traffic control & airport congestion34%
- Airline (crew, maintenance, cleaning, fueling)7%
- Security0%
- Extreme weather0%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion58%
- Extreme weather33%
- Airline (crew, maintenance, cleaning, fueling)8%
- Security0%
ACK to DCA: common questions
- How often are ACK to DCA flights on time?
- 72% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Nantucket to Washington cancelled?
- 4.2% of scheduled flights were cancelled (12 of 283).
- How long are typical delays?
- Across all flights the average arrival delay was 21 min (early arrivals count as zero). Flights that were late arrived 73 min behind schedule on average, and 10.4% of flights were an hour or more late.
- How long is taxi time at ACK?
- Flights on this route spent 20 min taxiing from the gate to takeoff on average.
Related routes
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ACK → DCA, nonstop flights by US airlines that report to the DOT. How we calculate this.