651 km · Domestic

Nantucket Memorial (ACK) – Ronald Reagan Washington National (DCA)

In July 2026, 168 flights operated between Nantucket Memorial and Ronald Reagan Washington National (both directions), and 74.4% left on time, according to the US BTS.

Flights operated · latest month168▼ 3.4%vs July 2025
On-time departures80.7%Average delay 10.1 min
Cancelled5.7%49 of 854 scheduled flights
Airlines2
Rank in country#2,284

Official · July 2026 according to the US BTS only airlines required to report on-time data to the US DOT

Flights per month

Partial coverage: only airlines that report on-time data to the US DOT · 8 of 8 periods have data

October 2024 July 2025 September 2025 October 2025 July 2026

Short series — ACK–DCA has only 8 months so far. Enough to show the level now, not enough to read a trend.

Only complete months are shown. A month appears once the source has published every day of it.

The most recent periods7 periods

Period	Flights operated 2025	Flights operated 2026	Change vs last year
January	–	–	–
February	–	–	–
March	–	–	–
April	–	–	–
May	–	–	–
June	83	94	▲ 13.3%
July	174	168	▼ 3.4%
August	195	–	–
September	68	–	–
October	17	–	in progress
November	–	–	–
December	–	–	–

On-time departures by month

Partial coverage: only airlines that report on-time data to the US DOT · 8 of 8 periods have data

October 2024 July 2025 September 2025 October 2025 July 2026

Short series — ACK–DCA has only 8 months so far. Enough to show the level now, not enough to read a trend.

Departures within 15 minutes of schedule.

The most recent periods7 periods

Period	On-time departures 2025	On-time departures 2026	Change vs last year
January	–	–	–
February	–	–	–
March	–	–	–
April	–	–	–
May	–	–	–
June	79.5%	73.4%	▼ 7.7%
July	81.6%	74.4%	▼ 8.8%
August	89.7%	–	–
September	76.5%	–	–
October	88.2%	–	in progress
November	–	–	–
December	–	–	–

Cancelled flights by month

Partial coverage: only airlines that report on-time data to the US DOT · 8 of 8 periods have data

October 2024 July 2025 September 2025 October 2025 July 2026

Short series — ACK–DCA has only 8 months so far. Enough to show the level now, not enough to read a trend.

The most recent periods7 periods

Period	Cancelled flights 2025	Cancelled flights 2026	Change vs last year
January	–	–	–
February	–	–	–
March	–	–	–
April	–	–	–
May	–	–	–
June	7	2	▼ 71.4%
July	18	20	▲ 11.1%
August	1	–	–
September	0	–	–
October	1	–	in progress
November	–	–	–
December	–	–	–

By direction

ACK → DCA

Scheduled flights: 427
Flights operated: 401
Cancelled: 26 · 6.1%
On-time departures: 79.1%

DCA → ACK

Scheduled flights: 427
Flights operated: 404
Cancelled: 23 · 5.4%
On-time departures: 82.4%

ACK → DCA and DCA → ACK counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026

Airline	Scheduled flights	Share	On-time departures	Cancelled
Republic Airways YX	508	59.5%	79.2%	27
JetBlue Airways B6	346	40.5%	83.0%	22

Shares are of scheduled flights in the period shown. Codeshare flights are counted once, under the operating airline.

Flight timing & delays

Historical departures, grouped by the scheduled local time at the departure airport. These are recorded outcomes, not a forecast for your flight.

Times are local to the departure airport of each flight; both directions are combined.

US domestic sectors recorded by BTS

Source: the US BTS · Oct 12, 2024 → Jul 31, 2026

Lowest average delay10:00–11:006.5min · 230 recorded · 223 measured

Recorded flights854ACK–DCA

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

View the figures

Departure hour	On-time departures	Average departure delay	With departure time	Recorded flights
00:00	No observations	—	—	—
01:00	No observations	—	—	—
02:00	No observations	—	—	—
03:00	No observations	—	—	—
04:00	No observations	—	—	—
05:00	No observations	—	—	—
06:00	No observations	—	—	—
07:00	Fewer than 200 measured departures	—	1	1
08:00	Fewer than 200 measured departures	—	27	27
09:00	Fewer than 200 measured departures	—	39	39
10:00	87.4%	6.5 min	223	230
11:00	Fewer than 200 measured departures	—	30	30
12:00	Fewer than 200 measured departures	—	102	102
13:00	No observations	—	—	—
14:00	Fewer than 200 measured departures	—	86	92
15:00	Fewer than 200 measured departures	—	128	141
16:00	Fewer than 200 measured departures	—	78	86
17:00	Fewer than 200 measured departures	—	91	106
18:00	No observations	—	—	—
19:00	No observations	—	—	—
20:00	No observations	—	—	—
21:00	No observations	—	—	—
22:00	No observations	—	—	—
23:00	No observations	—	—	—

Day of week

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures

Day of week	On-time departures	Average departure delay	With departure time	Recorded flights
Monday	Fewer than 200 measured departures	—	113	120
Tuesday	Fewer than 200 measured departures	—	99	114
Wednesday	Fewer than 200 measured departures	—	103	108
Thursday	Fewer than 200 measured departures	—	118	124
Friday	Fewer than 200 measured departures	—	120	122
Saturday	Fewer than 200 measured departures	—	138	146
Sunday	Fewer than 200 measured departures	—	114	120

Month of year

Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.

On-time departures Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT

Hover, tap or focus a point to see its value, sample and source.

View the figures

Month of year	On-time departures	Average departure delay	With departure time	Recorded flights
Jan	No observations	—	—	—
Feb	No observations	—	—	—
Mar	No observations	—	—	—
Apr	No observations	—	—	—
May	No observations	—	—	—
Jun	Fewer than 200 measured departures	—	177	186
Jul	78.1%	16.2 min	342	380
Aug	Fewer than 200 measured departures	—	195	196
Sep	Fewer than 200 measured departures	—	68	68
Oct	Fewer than 200 measured departures	—	23	24
Nov	No observations	—	—	—
Dec	No observations	—	—	—

Delay and on-time rates need at least 200 measured departures per bucket. Smaller samples remain visible in the flight-count chart. An empty slot means no observations, not zero flights.

Recorded outcomes

On time 76.1% 650
Delayed >15 min 18.1% 155
Cancelled 5.7% 49
Missing departure time 0.0% 0

All recorded flights with a known scheduled local time, counted once. Missing actual times are shown separately.

On time means departing no more than 15 minutes after schedule. Cancelled flights and flights missing departure times are excluded from the on-time rate and average delay.

Flight numbers on this route

10 of 10

Flight numbers	By direction	Departures	On time
B662493	ACK → DCA	173	88.6%
B662494	DCA → ACK	173	77.2%
YX4363	DCA → ACK	76	90.8%
YX4363	ACK → DCA	76	77.6%
YX4649	ACK → DCA	75	67.2%
YX4649	DCA → ACK	75	84.5%
YX4543	ACK → DCA	44	77.3%
YX4543	DCA → ACK	44	90.9%
YX4553	ACK → DCA	43	65.8%
YX4553	DCA → ACK	43	76.9%

Flight numbers are the codes sold on tickets. On shared flights one aircraft can carry several of them. Only numbers with at least 30 flights have a page.

Monthly figures

Period	Flights operated	Change vs last year	Cancelled	On-time departures
July 2026	168	−3.4%	20	74.4%
June 2026	94	+13.3%	2	73.4%
October 2025	17	+183.3%	1	88.2%
September 2025	68		0	76.5%
August 2025	195		1	89.7%
July 2025	174		18	81.6%
June 2025	83		7	79.5%
October 2024	6		0	100.0%

Nantucket Memorial (ACK) – Ronald Reagan Washington National (DCA)

Flights per month

Add a series to this chart

Series on this chart

On-time departures by month

Add a series to this chart

Series on this chart

Cancelled flights by month

Add a series to this chart

Series on this chart

By direction

ACK → DCA

DCA → ACK

Airlines on this route

Flight timing & delays

Departure hour

Day of week

Month of year

Recorded outcomes

Flight numbers on this route

How to read this chart