Plan a flight · Sun 8:17 pm EDT (00:17 UTC)

Ronald Reagan Washington Ntl Airport to Nantucket Memorial DCA → ACK

351 nautical miles (404 statute miles) northeast on a straight line, true course 064°, about 075° magnetic at the departure end (variation 11W). At 120 knots that is 1 h 43 min at the quickest height in today's winds (39,000 ft, a 85-knot tailwind), arriving about 10:00 pm EDT (02:00 UTC), after sunset at the destination. Right now DCA is IFR, wind from the north-northeast (030°) at 8 knots; ACK is marginal VFR, wind from the east (090°) at 17 knots, gusting to 25. For planning, not a briefing: the legal preflight briefing comes from Flight Service (1-800-WX-BRIEF) or the FAA's own tools. Airlines fly this pair: 537 flights in the DOT's last twelve reported months, the route's page.

The route the straight line, the warnings crossed, restrictions, pilot reports and the airports along the way · click a mark for its words

Green, blue, red and purple airport dots are the flying conditions reported there now (VFR, marginal VFR, IFR, low IFR); grey means no report. Red areas are SIGMETs, orange areas AIRMETs, hatched red areas temporary flight restrictions. Map tiles: OpenFreeMap, data © OpenStreetMap contributors.

Warnings the route crosses SIGMETs and AIRMETs whose area the line passes through or comes within 25 nm of

SIGMET E16E: thunderstorms (a convective SIGMET) up to 32,000 ft, moving from the southwest at 25 knots, until 9:55 pm EDT (01:55 UTC). Near the route, 195 nm along the route.

as issued

WSUS31 KKCI 112355
MKCE WST 112355
CONVECTIVE SIGMET 16E
VALID UNTIL 0155Z
NY NJ PA DE MD VA DC WV AND NJ NY CSTL WTRS
FROM SAX-30SE JFK-10N DCA-60ENE EKN-SAX
AREA EMBD TS MOV FROM 22025KT. TOPS TO FL320.

AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the whole route.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 293 nm of the route.

A SIGMET warns of weather hazardous to all aircraft; an AIRMET of weather that matters to small aircraft and to flying without instruments. "From 60 to 180 nm out" is measured along the route from DCA.

Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first

B38M at 25,000 ft, 18 nm northwest, 6:25 pm EDT (22:25 UTC): moderate turbulence. 117 nm along the route, 18 nm northwest of the line.
as filed, and in English
```
TEB UA /OV 3958N 07457W/TM 2225/FL250/TP B38M/TB MOD
```
Report
a routine report filed through TEB
Where
3958N 07457W
Time
22:25 UTC
Height
at 25,000 ft
Aircraft
B38M
Turbulence
moderate
CRJ7 at 15,000 ft, 22 nm north, 8:07 pm EDT (00:07 UTC): moderate chop turbulence. 156 nm along the route, 22 nm north of the line.
as filed, and in English
```
BLM UA /OV COL/TM 0007/FL150/TP CRJ7/TB MOD CHOP
```
Report
a routine report filed through BLM
Where
over COL
Time
00:07 UTC
Height
at 15,000 ft
Aircraft
CRJ7
Turbulence
moderate chop
A333 at 3,000 ft, 8 nm north, 7:10 pm EDT (23:10 UTC): moderate turbulence. 176 nm along the route, 8 nm north of the line.
as filed, and in English
```
JFK UA /OV JFK180025/TM 2310/FL030/TP A333/TB MOD TURB
```
Report
a routine report filed through JFK
Where
25 nm south (180°) of JFK
Time
23:10 UTC
Height
at 3,000 ft
Aircraft
A333
Turbulence
moderate turbulence
A32N , 32 nm northwest, 7:01 pm EDT (23:01 UTC): moderate turbulence. 185 nm along the route, 32 nm northwest of the line.
as filed, and in English
```
JFK UA /OV JFK10008/TM 2301/FL3000/TP A32N/TB MOD TURB
```
Report
a routine report filed through JFK
Where
JFK10008
Time
23:01 UTC
Height
at 300,000 ft
Aircraft
A32N
Turbulence
moderate turbulence
TBM9 descending, 28 nm northwest, 7:45 pm EDT (23:45 UTC): moderate turbulence, a broken layer above 700 ft. 215 nm along the route, 28 nm northwest of the line.
as filed, and in English
```
ISP UA /OV ISP/TM 2345/FLDURD/TP TBM9/SK BKN007/TB MOD
```
Report
a routine report filed through ISP
Where
over ISP
Time
23:45 UTC
Height
during the descent
Aircraft
TBM9
Sky
a broken layer from 700 ft
Turbulence
moderate
TBM9 descending, 28 nm northwest, 6:55 pm EDT (22:55 UTC): moderate turbulence, a broken layer above 700 ft. 215 nm along the route, 28 nm northwest of the line.
as filed, and in English
```
ISP UA /OV ISP/TM 2255/FLDURD/TP TBM9/SK BKN007/TB MOD
```
Report
a routine report filed through ISP
Where
over ISP
Time
22:55 UTC
Height
during the descent
Aircraft
TBM9
Sky
a broken layer from 700 ft
Turbulence
moderate
BCS3 at 8,000 ft, 32 nm north, 6:58 pm EDT (22:58 UTC): moderate turbulence, remarks: during the descent. 254 nm along the route, 32 nm north of the line.
as filed, and in English
```
JPX UA /OV JPX360010/TM 2258/FL080/TP BCS3/TB MOD/RM DURD
```
Report
a routine report filed through JPX
Where
10 nm north (360°) of JPX
Time
22:58 UTC
Height
at 8,000 ft
Aircraft
BCS3
Turbulence
moderate
Remarks
during the descent
A319 descending, 0 nm north, 8:02 pm EDT (00:02 UTC): a routine report with nothing remarked on. At the departure end, 0 nm north of the line.
as filed, and in English
```
DCA UA /OV RWY 1 DEPARTURE/TM 0002/FLDURC/TP A319/SK BASES 500 FT
```
Report
a routine report filed through DCA
Where
runway 1 departure
Time
00:02 UTC
Height
during the climb
Aircraft
A319
Sky
bases 50,000 ft ft
CL60 descending, 24 nm west, 7:30 pm EDT (23:30 UTC): overcast above 500 ft. At the departure end, 24 nm west of the line.
as filed, and in English
```
IAD UA /OV HEF160001/TM 2330/FLDURD/TP CL60/SK OVC 005
```
Report
a routine report filed through IAD
Where
1 nm south (160°) of HEF
Time
23:30 UTC
Height
during the descent
Aircraft
CL60
Sky
overcast from 500 ft
CL60 at 500 ft, 23 nm west, 7:30 pm EDT (23:30 UTC): overcast above 500 ft, remarks: during the descent. At the departure end, 23 nm west of the line.
as filed, and in English
```
HEF UA /OV KHEF150001/TM 2330/FL005/TP CL60/SK OVC005/RM DURD
```
Report
a routine report filed through HEF
Where
1 nm southeast (150°) of KHEF
Time
23:30 UTC
Height
at 500 ft
Aircraft
CL60
Sky
overcast from 500 ft
Remarks
during the descent
CRJ9 at 7,000 ft, 12 nm northwest, 7:17 pm EDT (23:17 UTC): overcast from 500 ft to 7,200 ft. At the departure end, 12 nm northwest of the line.
as filed, and in English
```
DCA UA /OV DCA320012/TM 2317/FL070/TP CRJ9/SK BASES 005 OVC TOPS 072
```
Report
a routine report filed through DCA
Where
12 nm northwest (320°) of DCA
Time
23:17 UTC
Height
at 7,000 ft
Aircraft
CRJ9
Sky
bases 500 ft overcast tops 7,200 ft
B39M at 2,000 ft, 25 nm west, 7:03 pm EDT (23:03 UTC): overcast above 700 ft. At the departure end, 25 nm west of the line.
as filed, and in English
```
IAD UA /OV AML320005/TM 2303/FL020/TP B39M/SK BASES OVC 007
```
Report
a routine report filed through IAD
Where
5 nm northwest (320°) of AML
Time
23:03 UTC
Height
at 2,000 ft
Aircraft
B39M
Sky
bases overcast at 700 ft
A319 descending, 21 nm west, 6:25 pm EDT (22:25 UTC): overcast above 700 ft, light rain. At the departure end, 21 nm west of the line.
as filed, and in English
```
IAD UA /OV RWY 1R/TM 2225/FLDURD/TP A319/SK OVC 007/WX 4SM W/ -RA
```
Report
a routine report filed through IAD
Where
runway 1R
Time
22:25 UTC
Height
during the descent
Aircraft
A319
Sky
overcast from 700 ft
Weather
4SM, west, light rain
BE58 at 3,000 ft, 24 nm west, 6:22 pm EDT (22:22 UTC): a routine report with nothing remarked on. At the departure end, 24 nm west of the line.
as filed, and in English
```
IAD UA /OV AML300003/TM 2222/FL030/TP BE58/SK BASES009 OVC
```
Report
a routine report filed through IAD
Where
3 nm northwest (300°) of AML
Time
22:22 UTC
Height
at 3,000 ft
Aircraft
BE58
Sky
BASES009 overcast

16 more routine reports are on the map.

Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 UTC · at 120 knots true airspeed

The eastbound cruising heights for this course (VFR: odd thousands plus 500 ft; above 18,000 ft the forecast levels), with the wind averaged along the line from the 3 forecast points nearest it (ACY, JFK, ACK). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
3,500 ft	170° at 20 kt	−4 kt		124 kt	2 h 50 min	11:07 pm EDT (03:07 UTC)
5,500 ft	190° at 24 kt	−11 kt		131 kt	2 h 41 min	10:58 pm EDT (02:58 UTC)
7,500 ft	210° at 25 kt	−19 kt	11 °C	139 kt	2 h 32 min	10:49 pm EDT (02:49 UTC)
9,500 ft	230° at 28 kt	−26 kt	9 °C	146 kt	2 h 24 min	10:41 pm EDT (02:41 UTC)
11,500 ft	230° at 30 kt	−29 kt	6 °C	149 kt	2 h 21 min	10:38 pm EDT (02:38 UTC)
13,500 ft	240° at 33 kt	−33 kt	2 °C	153 kt	2 h 18 min	10:35 pm EDT (02:35 UTC)
15,500 ft	240° at 37 kt	−36 kt	-2 °C	156 kt	2 h 15 min	10:32 pm EDT (02:32 UTC)
17,500 ft	240° at 40 kt	−40 kt	-6 °C	160 kt	2 h 12 min	10:29 pm EDT (02:29 UTC)
18,000 ft FL180	240° at 41 kt	−41 kt	-7 °C	161 kt	2 h 11 min	10:28 pm EDT (02:28 UTC)
24,000 ft FL240	240° at 50 kt	−49 kt	-17 °C	169 kt	2 h 05 min	10:22 pm EDT (02:22 UTC)
30,000 ft FL300	230° at 69 kt	−68 kt	-31 °C	188 kt	1 h 52 min	10:09 pm EDT (02:09 UTC)
34,000 ft FL340	240° at 76 kt	−75 kt	-41 °C	195 kt	1 h 48 min	10:05 pm EDT (02:05 UTC)
39,000 ft FL390	240° at 85 kt	−85 kt	-54 °C	205 kt	1 h 43 min	10:00 pm EDT (02:00 UTC)

Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 UTC; temperatures above 24,000 ft are below zero. Heights are above sea level; a height is left out when the forecast has no wind for it over most of the line (the ground is higher). Ground speed is the airspeed less the headwind; the time en route is for the straight line and ignores climb, descent and routing around weather.

The forecast points as issued

Point	From	3,000	6,000	9,000	12,000	18,000	24,000	30,000	34,000	39,000
ACY	used from 0 nm out; 96 nm from the line	230/15	230/22 15°	230/31 11°	230/27 6°	230/40 -7°	230/51 -17°	230/71 -31°	230/81 -41°	230/86 -53°
JFK	used from 146 nm out; 34 nm from the line	140/43	170/35 13°	230/18 9°	250/25 5°	240/40 -7°	230/50 -17°	230/75 -31°	230/78 -41°	230/88 -53°
ACK	used from 244 nm out; 83 nm from the line	150/19	170/30 8°	210/31 9°	230/42 3°	250/44 -7°	250/50 -17°	240/62 -32°	250/71 -42°	250/86 -55°

The weather now: both ends and the airports along the way public airports with a weather report within 25 nm of the line, one for each stretch

Airport	Where	Conditions	Wind	Visibility	Ceiling	Elevation	Reported
DCA Washington, DC	departure	IFR Sky: overcast at 600 feet	from the north-northeast (030°) at 8 knots	10+ mi	600 ft	14 ft	7:52 pm EDT (23:52 UTC)
BWI Baltimore, MD	20 nm out, 11 nm north of the line, tower	IFR Sky: overcast at 500 feet Weather: light drizzle, mist	from the northeast (040°) at 8 knots	2.5 mi	500 ft	143 ft	00:13 UTC
ILG Wilmington, DE	78 nm out, 16 nm north of the line, tower	IFR Sky: overcast at 500 feet Weather: rain	from the north-northeast (030°) at 14 knots	4 mi	500 ft	79 ft	23:51 UTC
ACY Atlantic City, NJ	117 nm out, 17 nm southeast of the line, tower	low IFR Sky: overcast at 300 feet Weather: mist	calm	2.5 mi	300 ft	74 ft	23:54 UTC
MJX Toms River, NJ	146 nm out, 5 nm west of the line	low IFR Sky: overcast at 400 feet Weather: light rain	from the northeast (040°) at 9 knots	6 mi	400 ft	86 ft	23:56 UTC
FOK Westhampton Beach, NY	234 nm out, 22 nm northwest of the line, tower	IFR Sky: a broken layer at 700 feet, overcast at 1,500 feet Weather: light rain, mist	from the east-northeast (070°) at 13 knots, gusting to 22	3 mi	700 ft	66 ft	00:10 UTC
BID Block Island, RI	283 nm out, 22 nm north of the line	IFR Sky: overcast at 500 feet Weather: rain, mist	from the east-northeast (060°) at 14 knots, gusting to 23	2.5 mi	500 ft	107 ft	00:15 UTC
MVY Vineyard Haven, MA	332 nm out, 17 nm northwest of the line, tower	IFR Sky: a broken layer at 800 feet, overcast at 1,500 feet Weather: light rain	from the east (100°) at 10 knots, gusting to 21	10+ mi	800 ft	66 ft	23:57 UTC
ACK Nantucket, MA	destination	marginal VFR Sky: a few clouds at 4,500 feet, overcast at 6,500 feet Weather: rain, mist	from the east (090°) at 17 knots, gusting to 25	5 mi	6,500 ft	46 ft	7:53 pm EDT (23:53 UTC)

The highest airport on this list sits at 143 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At ACK when you get there the forecast at the estimated arrival, 10:00 pm EDT (02:00 UTC)

Wind from the east at 14 knots, gusting to 24, visibility 2 miles, rain, mist, overcast at 1,000 feet IFR

The whole forecast for ACK

From Sun 8:00 pm EDT (00:00 UTC): wind from the east at 11 knots, visibility more than 6 miles, light rain, a few clouds at 2,400 feet, scattered clouds at 3,500 feet and more above
From Sun 10:00 pm EDT (02:00 UTC): wind from the east at 14 knots, gusting to 24, visibility 2 miles, rain, mist, overcast at 1,000 feet
From Mon 1:00 am EDT (05:00 UTC): wind from the east at 16 knots, gusting to 23, visibility 3 miles, rain, mist, overcast at 300 feet
From Mon 3:00 am EDT (07:00 UTC): wind from the east-northeast at 15 knots, visibility 1 mile, light rain showers, mist, overcast at 300 feet
From Mon 5:00 am EDT (09:00 UTC): wind from the north-northeast at 15 knots, visibility ¾ mile, mist, overcast at 300 feet
30% chance between Mon 5:00 am EDT (09:00 UTC) and 6:00 am EDT (10:00 UTC): visibility ¾ mile, light rain showers, mist, overcast at 100 feet
From Mon 11:00 am EDT (15:00 UTC): wind from the north-northeast at 15 knots, visibility more than 6 miles, a broken layer at 800 feet
From Mon 4:00 pm EDT (20:00 UTC): wind from the north at 13 knots, gusting to 21, visibility more than 6 miles, scattered clouds at 3,000 feet

The forecast for DCA, the departure

From Sun 8:00 pm EDT (00:00 UTC): wind from the north-northeast at 9 knots, visibility 5 miles, light rain showers, mist, overcast at 700 feet
From Sun 10:00 pm EDT (02:00 UTC): wind from the northeast at 5 knots, visibility 2 miles, rain showers, mist, overcast at 500 feet
From Mon 1:00 am EDT (05:00 UTC): wind from the north at 7 knots, visibility 4 miles, light rain showers, mist, overcast at 800 feet
From Mon 6:00 am EDT (10:00 UTC): wind from the north-northwest at 10 knots, gusting to 18, visibility more than 6 miles, overcast at 1,200 feet
From Mon 11:00 am EDT (15:00 UTC): wind from the north-northwest at 13 knots, gusting to 22, visibility more than 6 miles, a broken layer at 1,500 feet, overcast at 2,500 feet
From Mon 2:00 pm EDT (18:00 UTC): wind from the north-northwest at 10 knots, gusting to 17, visibility more than 6 miles, a broken layer at 3,500 feet
From Mon 7:00 pm EDT (23:00 UTC): wind from the northwest at 6 knots, visibility more than 6 miles, a few clouds at 5,000 feet, scattered clouds at 25,000 feet

Temporary flight restrictions on the line or within 25 nm of it

4/9383 WASHINGTON, DC., USA on the route, at the departure end · security · ZDC
6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 13 nm from the route, at the departure end · a VIP movement · today · ZDC
6/8800 Baltimore, MD, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 13 nm from the route, 29 nm along the route · drones kept away from a public gathering · starts Saturday 17 October · ZDC
6/8719 Greenwood, DE, Friday, October 16, 2026 through Saturday, October 17, 2026 UTC 24 nm from the route, 59 nm along the route · air shows/sports · starts Friday 16 October · ZDC
6/8886 Greenwood, DE, Sunday, October 18, 2026 UTC 24 nm from the route, 59 nm along the route · air shows/sports · starts Sunday 18 October · ZDC

Daylight

Sunset at DCA 6:34 pm EDT (22:34 UTC), at ACK 6:04 pm EDT (22:04 UTC) (civil twilight ends 6:32 pm EDT (22:32 UTC)). At 120 knots the arrival at ACK is after sunset there (6:06 pm EDT (22:06 UTC)).

Each restriction opens the FAA's own page with the exact area, heights and times. Ordinary notices to air missions (closed runways, lights out) are not shown: the FAA's notice search is not open to sites like this one at this time.

Radar and forecast charts for the regions crossed government pictures, the latest each time the page loads

Radar now, the Northeast · loop National Weather Service

Radar, the whole country · loop National Weather Service

Surface analysis now Weather Prediction Center

Forecast chart, 12 hours ahead Weather Prediction Center

Forecast chart, 24 hours ahead Weather Prediction Center

Sources: the Aviation Weather Center's data service (SIGMETs, AIRMETs, graphical AIRMETs, pilot reports, winds and temperatures aloft, observations and terminal forecasts), the National Weather Service radar, the Weather Prediction Center's charts, the FAA's temporary flight restriction list and shapes, and the FAA's airport file for the positions, elevations and magnetic variation. Fetched when the page is viewed and kept a few minutes. Each leg is the straight line between its two airports; airways, terrain and airspace are not considered. The airports in detail: Ronald Reagan Washington Ntl Airport, Nantucket Memorial.