Plan a flight · Mon 1:33 am EDT (05:33 UTC)

New York Stewart International to Long Island Mac Arthur Airport SWF → ISP

62 nautical miles (72 statute miles) southeast on a straight line, true course 133°, about 147° magnetic at the departure end (variation 14W). At 120 knots that is 28 min at the quickest height in today's winds (15,500 ft, a 11-knot tailwind), arriving about 2:01 am EDT (06:01 UTC), after sunset at the destination. Right now SWF is marginal VFR, wind from the north-northeast (030°) at 7 knots; ISP is IFR, wind from the north (010°) at 12 knots, gusting to 22. 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: 1 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 E19E: thunderstorms (a convective SIGMET) up to 43,000 ft, moving from the southwest at 20 knots, until 2:55 am EDT (06:55 UTC). Over the last 18 nm of the route.

as issued

WSUS31 KKCI 120455
MKCE WST 120455
CONVECTIVE SIGMET 19E
VALID UNTIL 0655Z
CT NY NJ PA DE MD VA DC WV AND DE NJ NY MD CT VA CSTL WTRS
FROM 20NNW HTO-70SSE HTO-90SE SIE-20WNW LYH-40ESE AIR-20NNW HTO
AREA EMBD TS MOV FROM 24020KT. TOPS TO FL430.

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 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the whole 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 SWF.

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

GA6C descending, 5 nm west, 12:32 am EDT (04:32 UTC): overcast above 1,000 ft, remarks: bases OVC010. At the departure end, 5 nm west of the line.
as filed, and in English
```
SWF UA /OV SWF 270005/TM 0432/FLDURD/TP GA6C/SK OVC010/RM BASES OVC010
```
Report
a routine report filed through SWF
Where
5 nm west (270°) of SWF
Time
04:32 UTC
Height
during the descent
Aircraft
GA6C
Sky
overcast from 1,000 ft
Remarks
bases OVC010
A321 at 700 ft, 30 nm southwest, 10:46 pm EDT (02:46 UTC): overcast above 700 ft. 44 nm along the route, 30 nm southwest of the line.
as filed, and in English
```
JFK UA /OV KJFK225002/TM 0246/FL007/TP A321/SK OVC007
```
Report
a routine report filed through JFK
Where
2 nm southwest (225°) of KJFK
Time
02:46 UTC
Height
at 700 ft
Aircraft
A321
Sky
overcast from 700 ft
A320 descending, 0 nm southwest, 10:45 pm EDT (02:45 UTC): remarks: final runway 24. At the destination end, 0 nm southwest of the line.
as filed, and in English
```
ISP UA /OV ISP/TM 0245/FLDURD/TP A320/SK BCN007/RM FINAL RY24
```
Report
a routine report filed through ISP
Where
over ISP
Time
02:45 UTC
Height
during the descent
Aircraft
A320
Sky
BCN007
Remarks
final runway 24

Winds aloft along the route, and the time en route the forecast for use 02:00–09:00 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 1 forecast point nearest it (JFK). 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	250° at 19 kt	−9 kt		129 kt	29 min	2:02 am EDT (06:02 UTC)
5,500 ft	250° at 22 kt	−10 kt		130 kt	29 min	2:02 am EDT (06:02 UTC)
7,500 ft	240° at 28 kt	−10 kt	12 °C	130 kt	29 min	2:02 am EDT (06:02 UTC)
9,500 ft	240° at 33 kt	−10 kt	8 °C	130 kt	29 min	2:02 am EDT (06:02 UTC)
11,500 ft	240° at 33 kt	−10 kt	5 °C	130 kt	29 min	2:02 am EDT (06:02 UTC)
13,500 ft	240° at 34 kt	−10 kt	0 °C	130 kt	29 min	2:02 am EDT (06:02 UTC)
15,500 ft	240° at 36 kt	−11 kt	-4 °C	131 kt	28 min	2:01 am EDT (06:01 UTC)
17,500 ft	240° at 38 kt	−11 kt	-9 °C	131 kt	28 min	2:01 am EDT (06:01 UTC)
18,000 ft FL180	240° at 38 kt	−11 kt	-10 °C	131 kt	28 min	2:01 am EDT (06:01 UTC)
24,000 ft FL240	240° at 45 kt	−13 kt	-21 °C	133 kt	28 min	2:01 am EDT (06:01 UTC)
30,000 ft FL300	230° at 86 kt	−11 kt	-32 °C	131 kt	28 min	2:01 am EDT (06:01 UTC)
34,000 ft FL340	230° at 102 kt	−13 kt	-40 °C	133 kt	28 min	2:01 am EDT (06:01 UTC)
39,000 ft FL390	230° at 84 kt	−10 kt	-51 °C	130 kt	29 min	2:02 am EDT (06:02 UTC)

Based on data from the 12th at 00:00 UTC; valid on the 12th at 06:00 UTC for use 02:00 to 09:00 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
JFK	used from 0 nm out; 37 nm from the line	250/18	250/23 14°	240/33 9°	240/33 4°	240/38 -10°	240/45 -21°	230/86 -32°	230/102 -40°	230/84 -51°

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
SWF New York, NY	departure	marginal VFR Sky: scattered clouds at 700 feet, overcast at 1,200 feet Weather: mist	from the north-northeast (030°) at 7 knots	6 mi	1,200 ft	490 ft	12:45 am EDT (04:45 UTC)
HPN White Plains, NY	27 nm out, 8 nm south of the line, tower	IFR Sky: a broken layer at 800 feet, a broken layer at 1,600 feet, a broken layer at 2,200 feet	from the north (360°) at 7 knots	10+ mi	800 ft	439 ft	05:19 UTC
ISP New York, NY	destination	IFR Sky: overcast at 600 feet Weather: light rain, mist	from the north (010°) at 12 knots, gusting to 22	6 mi	600 ft	98 ft	12:56 am EDT (04:56 UTC)

The highest airport on this list sits at 490 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At ISP when you get there the forecast at the estimated arrival, 2:01 am EDT (06:01 UTC)

Wind from the north-northeast at 15 knots, visibility 6 miles, mist, showers nearby, scattered clouds at 400 feet, overcast at 800 feet IFR

At times between Sun 11:00 pm EDT (03:00 UTC) and 3:00 am EDT (07:00 UTC): a broken layer at 400 feet low IFR

The whole forecast for ISP

From Sun 11:00 pm EDT (03:00 UTC): wind from the north-northeast at 15 knots, visibility 6 miles, mist, showers nearby, scattered clouds at 400 feet, overcast at 800 feet
At times between Sun 11:00 pm EDT (03:00 UTC) and 3:00 am EDT (07:00 UTC): a broken layer at 400 feet
From Mon 8:00 am EDT (12:00 UTC): wind from the north at 12 knots, visibility more than 6 miles, a broken layer at 800 feet, overcast at 1,500 feet
From Mon 11:00 am EDT (15:00 UTC): wind from the north at 11 knots, visibility more than 6 miles, a broken layer at 2,500 feet
From Mon 2:00 pm EDT (18:00 UTC): wind from the north-northwest at 8 knots, visibility more than 6 miles, a few clouds at 2,500 feet, scattered clouds at 5,000 feet

The forecast for SWF, the departure

From Sun 11:00 pm EDT (03:00 UTC): wind from the northeast at 7 knots, visibility 5 miles, light rain showers, mist, a few clouds at 400 feet, a broken layer at 700 feet and more above
From Mon 7:00 am EDT (11:00 UTC): wind from the north-northeast at 5 knots, visibility more than 6 miles, a broken layer at 800 feet, overcast at 1,500 feet
From Mon 9:00 am EDT (13:00 UTC): wind from the north-northeast at 6 knots, visibility more than 6 miles, a broken layer at 2,000 feet
From Mon 12:00 pm EDT (16:00 UTC): wind from the north at 7 knots, visibility more than 6 miles, a few clouds at 2,000 feet, a broken layer at 5,000 feet
From Mon 4:00 pm EDT (20:00 UTC): wind from the northwest at 6 knots, visibility more than 6 miles, scattered clouds at 5,000 feet
From Mon 9:00 pm EDT (01:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 5,000 feet

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

No temporary flight restriction on or near this route right now.

Daylight

Sunset at SWF 6:20 pm EDT (22:20 UTC), at ISP 6:17 pm EDT (22:17 UTC) (civil twilight ends 6:44 pm EDT (22:44 UTC)). At 120 knots the arrival at ISP is before sunrise there (7:00 am EDT (11:00 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: New York Stewart International, Long Island Mac Arthur Airport.