DCA to ACK flight delays & on-time performance
Nonstop flights from Ronald Reagan Washington National Airport to Nantucket Memorial Airport · 405 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at DCA or ACK right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Washington (DCA) to Nantucket (ACK) arrived on time 73% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 4.2% were cancelled, and 7% arrived an hour or more late.
- Republic Airways was the most punctual airline here (78% on time); JetBlue was the least (65%).
- Departures scheduled around 9am did best (90% on time); around 3pm did worst (60%).
- Tuesday was the most reliable day to fly (85% on time) and Monday the least (64%).
- The largest source of delay minutes was late-arriving aircraft (42%).
Which airline is most on time from DCA to ACK?
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 |
|---|---|---|---|---|---|
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 78% | 2.5% | 13 min | 5.1% | 163 |
| JetBlue | 65% | 6.7% | 21 min | 10.0% | 120 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am78%27 flights
- 9am90%21 flights
- 10am82%28 flights
- 12pm56%10 flights
- 2pm72%73 flights
- 3pm60%95 flights
- 4pm89%28 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday64%2.5% cancelled
- Tuesday85%13.2% cancelled
- Wednesday71%0.0% cancelled
- Thursday73%2.5% cancelled
- Friday71%2.3% cancelled
- Saturday79%6.4% cancelled
- Sunday67%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 aircraft42%
- Air traffic control & airport congestion28%
- Airline (crew, maintenance, cleaning, fueling)19%
- Extreme weather11%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion58%
- Extreme weather33%
- Airline (crew, maintenance, cleaning, fueling)8%
- Security0%
DCA to ACK: common questions
- How often are DCA to ACK flights on time?
- 73% 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 Washington to Nantucket cancelled?
- 4.2% of scheduled flights were cancelled (12 of 283).
- How long are typical delays?
- Across all flights the average arrival delay was 16 min (early arrivals count as zero). Flights that were late arrived 55 min behind schedule on average, and 7.1% of flights were an hour or more late.
- How long is taxi time at DCA?
- Flights on this route spent 24 min taxiing from the gate to takeoff on average.
Related routes
Return trip: ACK to DCA — 72% on time
More flights from Washington
More flights to Nantucket
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: DCA → ACK, nonstop flights by US airlines that report to the DOT. How we calculate this.