ACK to DCA flight delays
Nantucket, MA (ACK) Washington, VA (DCA) · 405 miles
285 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
76.67%
Arrived on time
Within 15 minutes of schedule
4.91%
Cancelled
Share of scheduled flights
53 min
When late, late by
Average across delayed arrivals
13 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The cancellation rate for the period is 4.91%, but almost all of it belongs to one month: July 2025, when 11.46% of flights on this route did not operate. Outside that month the route cancelled at around 1.11%. Whatever happened in July was an event, not the normal state of this route.
This is a thin route — 285 flights across the whole period. On a route this infrequent a cancellation is far more costly than the rate suggests, because the next departure may not be the same day.
The 2 airlines here are separated by under 5 points — close enough to call a tie. Choose on price and departure time.
The Nantucket to Washington route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over January 2025 – August 2026, JetBlue Airways arrived on time most often on ACK to DCA. Republic Airways was late most often. Flights ran closest to schedule in October and worst in September.
Every airline on ACK to DCA
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Republic Airways | 164 | 74.83% | 7.32% | 49 min | F |
| JetBlue Airways | 121 | 78.99% | 1.65% | 59 min | C |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
DCA to ACK Washington back to Nantucket 76.19% on time DOther routes from Nantucket
Common questions
Are flights from Nantucket to Washington usually delayed?
76.67% of flights on the ACK to DCA route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airline is most on time from Nantucket to Washington?
JetBlue Airways, at 78.99% on time across 121 flights. The least punctual on the route was Republic Airways at 74.83%.
How often are ACK to DCA flights cancelled?
4.91% of scheduled flights did not operate — about 49 in every thousand. That is high enough that cancellation, not delay, is the risk worth planning around.
When ACK to DCA flights are late, how late are they?
About 53 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on ACK to DCA during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →