Plan a flight · Mon 1:10 am EDT (05:10 UTC)

New York Stewart International to San Antonio International SWF → SAT

1,383 nautical miles (1,592 statute miles) southwest on a straight line, true course 247°, about 261° magnetic at the departure end (variation 14W). At 120 knots that is 12 h 08 min at the quickest height in today's winds (12,500 ft, a 6-knot headwind), arriving about 12:18 pm CDT (17:18 UTC). Right now SWF is marginal VFR, wind from the north-northeast (030°) at 7 knots; SAT is VFR, wind from the southeast (130°) at 10 knots. 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: 2 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 route from 199 to 289 nm out.

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 first 697 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the first 239 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 90 to 428 nm out.

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

UAL1558 at 30,000 ft, 2 nm south, 10:22 pm EDT (02:22 UTC): moderate turbulence, -36 °C, wind 240° at 50 knots. 179 nm along the route, 2 nm south of the line.
as filed, and in English
```
ARP UAL1558 4014N 07742W 0222 F300 MS36 240/050KT TB MODERATE SK CLEAR IC NONE
```
Report
a routine report filed through ARP
B752 at 30,000 ft, 5 nm north, 10:26 pm EDT (02:26 UTC): moderate chop turbulence, remarks: zob. 189 nm along the route, 5 nm north of the line.
as filed, and in English
```
HGR UA /OV THS010020/TM 0226/FL300/TP B752/TB MOD CHOP/RM ZOB
```
Report
a routine report filed through HGR
Where
20 nm north (010°) of THS
Time
02:26 UTC
Height
at 30,000 ft
Aircraft
B752
Turbulence
moderate chop
Remarks
zob
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
GA6C at 1,100 ft, 32 nm southeast, 10:31 pm EDT (02:31 UTC): overcast above 1,100 ft, remarks: low-level wind shear + 5 knots runway 34. At the departure end, 32 nm southeast of the line.
as filed, and in English
```
HPN UA /OV HPN/TM 0231/FL011/TP GA6C/SK OVC011/RM LLWS +/- 5 KNOTS RWY34
```
Report
a routine report filed through HPN
Where
over HPN
Time
02:31 UTC
Height
at 1,100 ft
Aircraft
GA6C
Sky
overcast from 1,100 ft
Remarks
low-level wind shear + 5 knots runway 34
E175 descending, 44 nm southeast, 10:19 pm EDT (02:19 UTC): remarks: cloud bases 70,000 ft ils runway 4. At the departure end, 44 nm southeast of the line.
as filed, and in English
```
LGA UA /OV LGA/TM 0219/FLDURD/TP E175/RM CLOUD BASES 700 ILS RWY 4
```
Report
a routine report filed through LGA
Where
over LGA
Time
02:19 UTC
Height
during the descent
Aircraft
E175
Remarks
cloud bases 70,000 ft ils runway 4
PC12 at 1,000 ft, 28 nm southeast, 10:28 pm EDT (02:28 UTC): overcast above 1,000 ft. 109 nm along the route, 28 nm southeast of the line.
as filed, and in English
```
RDG UA /OV 2 SOUTH RDG/TM 0228/FL010/TP PC12/SK OVC010
```
Report
a routine report filed through RDG
Where
2 south rdg
Time
02:28 UTC
Height
at 1,000 ft
Aircraft
PC12
Sky
overcast from 1,000 ft
E145 at 600 ft, 22 nm south, 11:20 pm EDT (03:20 UTC): overcast above 600 ft. 139 nm along the route, 22 nm south of the line.
as filed, and in English
```
MDT UA /OV MDT/TM 0320/FL006/TP E145/SK OVC 006
```
Report
a routine report filed through MDT
Where
over MDT
Time
03:20 UTC
Height
at 600 ft
Aircraft
E145
Sky
overcast from 600 ft
E75S at 22,000 ft, 27 nm north, 10:51 pm EDT (02:51 UTC): light to moderate turbulence, remarks: zob. 229 nm along the route, 27 nm north of the line.
as filed, and in English
```
JST UA /OV JST/TM 0251/FL220/TP E75S/TB LGHT-MOD/RM ZOB
```
Report
a routine report filed through JST
Where
over JST
Time
02:51 UTC
Height
at 22,000 ft
Aircraft
E75S
Turbulence
lght-mod
Remarks
zob

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 westbound cruising heights for this course (VFR: even thousands plus 500 ft; above 18,000 ft the forecast levels), with the wind averaged along the line from the 11 forecast points nearest it (AVP, PSB, EKN, CRW, LOU, BNA, MEM, LIT, SHV, CLL, SAT). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
4,500 ft	270° at 8 kt	+7 kt	12 °C	113 kt	12 h 14 min	12:24 pm CDT (17:24 UTC)
6,500 ft	290° at 10 kt	+7 kt	14 °C	113 kt	12 h 14 min	12:24 pm CDT (17:24 UTC)
8,500 ft	290° at 13 kt	+9 kt	11 °C	111 kt	12 h 28 min	12:38 pm CDT (17:38 UTC)
10,500 ft	290° at 13 kt	+8 kt	8 °C	112 kt	12 h 21 min	12:31 pm CDT (17:31 UTC)
12,500 ft	300° at 12 kt	+6 kt	4 °C	114 kt	12 h 08 min	12:18 pm CDT (17:18 UTC)
14,500 ft	300° at 14 kt	+7 kt	0 °C	113 kt	12 h 14 min	12:24 pm CDT (17:24 UTC)
16,500 ft	300° at 15 kt	+7 kt	-4 °C	113 kt	12 h 14 min	12:24 pm CDT (17:24 UTC)
18,000 ft FL180	300° at 16 kt	+8 kt	-7 °C	112 kt	12 h 21 min	12:31 pm CDT (17:31 UTC)
24,000 ft FL240	300° at 19 kt	+10 kt	-18 °C	110 kt	12 h 34 min	12:44 pm CDT (17:44 UTC)
30,000 ft FL300	300° at 33 kt	+15 kt	-32 °C	105 kt	13 h 10 min	1:20 pm CDT (18:20 UTC)
34,000 ft FL340	300° at 36 kt	+19 kt	-40 °C	101 kt	13 h 42 min	1:52 pm CDT (18:52 UTC)
39,000 ft FL390	300° at 34 kt	+16 kt	-50 °C	104 kt	13 h 18 min	1:28 pm CDT (18:28 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
AVP	used from 0 nm out; 50 nm from the line	150/5	350/13 12°	270/20 8°	260/17 4°	260/25 -11°	240/31 -22°	240/54 -35°	230/61 -41°	240/55 -49°
PSB	used from 149 nm out; 42 nm from the line		360/13 13°	330/14 7°	300/11 3°	290/12 -11°	240/23 -23°	270/25 -36°	250/34 -40°	250/45 -48°
EKN	used from 249 nm out; 43 nm from the line		330/21 12°	330/25 7°	350/22 2°	330/24 -10°	310/27 -21°	320/33 -35°	290/31 -39°	290/34 -47°
CRW	used from 348 nm out; 26 nm from the line	330/20	330/23 11°	340/25 8°	340/21 2°	340/33 -9°	340/41 -20°	330/42 -35°	320/44 -39°	320/43 -47°
LOU	used from 498 nm out; 80 nm from the line	310/18	340/28 16°	340/29 10°	350/27 3°	330/27 -7°	340/39 -19°	330/58 -33°	330/67 -41°	330/40 -49°
BNA	used from 597 nm out; 50 nm from the line	310/20	340/20 17°	330/24 10°	340/22 5°	330/26 -6°	340/29 -18°	330/52 -33°	320/62 -41°	340/45 -50°
MEM	used from 746 nm out; 72 nm from the line	230/19	260/16 15°	270/17 12°	300/13 6°	300/15 -5°	300/26 -18°	300/34 -32°	300/41 -40°	310/46 -52°
LIT	used from 896 nm out; 68 nm from the line	220/21	230/17 16°	250/24 12°	260/15 7°	260/13 -5°	280/25 -16°	290/35 -30°	300/42 -40°	300/40 -52°
SHV	used from 995 nm out; 67 nm from the line	200/18	230/24 18°	230/24 12°	240/14 8°	260/12 -4°	240/11 -15°	300/31 -29°	300/32 -40°	300/36 -52°
CLL	used from 1194 nm out; 42 nm from the line	170/22	170/26 18°	200/15 14°	240/13 8°	240/15 -5°	260/17 -13°	290/27 -29°	290/22 -40°	320/30 -51°
SAT	used from 1344 nm out; 20 nm from the line	150/26	180/18 19°	180/18 14°	200/14 9°	230/16 -6°	210/9 -13°	270/8 -29°	280/6 -39°	340/19 -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)
AVP Wilkes-Barre/Scranton, PA	70 nm out, 21 nm northwest of the line, tower	marginal VFR Sky: overcast at 1,200 feet	from the northeast (040°) at 6 knots	10+ mi	1,200 ft	961 ft	04:54 UTC
CXY Harrisburg, PA	149 nm out, 19 nm southeast of the line, tower	marginal VFR Sky: overcast at 1,100 feet	from the north-northwest (340°) at 3 knots	10+ mi	1,100 ft	346 ft	04:56 UTC
CKB Clarksburg, WV	309 nm out, 1 nm west of the line, tower	IFR Sky: a broken layer at 800 feet, overcast at 1,300 feet	from the west (280°) at 3 knots	10+ mi	800 ft	1,223 ft	04:53 UTC
HTS Huntington, WV	428 nm out, 5 nm west of the line, tower	IFR Sky: overcast at 800 feet	from the west-northwest (290°) at 6 knots	10+ mi	800 ft	828 ft	04:58 UTC
JWN Nashville, TN	677 nm out, 6 nm southeast of the line, tower	low IFR Sky: sky obscured Weather: fog	calm	0.25 mi	none	501 ft	04:55 UTC
MKL Jackson, TN	776 nm out, 17 nm northwest of the line, tower	VFR	from the south-southwest (210°) at 3 knots	10+ mi	none	434 ft	04:53 UTC
OLV Olive Branch, MS	836 nm out, 9 nm northwest of the line, tower	reported, no category	from the south (170°) at 5 knots	10+ mi	none	401 ft	04:55 UTC
SHV Shreveport, LA	1085 nm out, 4 nm south of the line, tower	VFR	from the south-southwest (200°) at 7 knots	10+ mi	none	257 ft	04:56 UTC
GGG Longview, TX	1125 nm out, 21 nm northwest of the line, tower	VFR	from the south (190°) at 9 knots	10+ mi	none	365 ft	04:53 UTC
HYI Austin, TX	1344 nm out, 3 nm south of the line, tower	VFR	from the south-southeast (160°) at 4 knots	10+ mi	none	594 ft	04:56 UTC
SAT San Antonio, TX	destination	VFR Sky: a few clouds at 25,000 feet	from the southeast (130°) at 10 knots	10+ mi	none	809 ft	11:51 pm CDT (04:51 UTC)

The highest airport on this list sits at 1,223 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At SAT when you get there the forecast at the estimated arrival, 12:18 pm CDT (17:18 UTC)

Wind from the south-southeast at 8 knots, visibility more than 6 miles, a broken layer at 2,500 feet marginal VFR

The whole forecast for SAT

From Sun 10:00 pm CDT (03:00 UTC): wind from the south-southeast at 15 knots, visibility more than 6 miles, a few clouds at 6,000 feet, scattered clouds at 25,000 feet
From Mon 12:00 am CDT (05:00 UTC): wind from the southeast at 9 knots, visibility more than 6 miles, scattered clouds at 1,200 feet
From Mon 6:00 am CDT (11:00 UTC): wind from the east-southeast at 5 knots, visibility more than 6 miles, a broken layer at 1,200 feet
From Mon 12:00 pm CDT (17:00 UTC): wind from the south-southeast at 8 knots, visibility more than 6 miles, a broken layer at 2,500 feet
From Mon 2:00 pm CDT (19:00 UTC): wind from the south at 11 knots, visibility more than 6 miles, a broken layer 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

6/0708 Goodlettsville, TN, Saturday, August 1, 2026 through Sunday, August 1, 2027 UTC 3 nm from the route, 667 nm along the route · security · until 1 August · ZME

Daylight

Sunset at SWF 6:20 pm EDT (22:20 UTC), at SAT 7:05 pm CDT (00:05 UTC) (civil twilight ends 7:29 pm CDT (00:29 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 now, the lower Mississippi valley · loop National Weather Service

Radar now, the southern Plains · 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, San Antonio International.