Plan a flight · Mon 3:39 am EDT (07:39 UTC)

Newark Liberty International to San Antonio International EWR → SAT

1,362 nautical miles (1,567 statute miles) west on a straight line, true course 248°, about 261° magnetic at the departure end (variation 13W). At 120 knots that is 11 h 57 min at the quickest height in today's winds (12,500 ft, a 6-knot headwind), arriving about 2:36 pm CDT (19:36 UTC). Right now EWR is marginal VFR, wind from the north (010°) at 11 knots; SAT is VFR, wind from the east-southeast (120°) at 7 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: 1,149 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 E25E: thunderstorms (a convective SIGMET) up to 35,000 ft, moving from the southwest at 20 knots, until 4:55 am EDT (08:55 UTC). Near the route, 89 nm along the route.

as issued

WSUS31 KKCI 120655
MKCE WST 120655
CONVECTIVE SIGMET 25E
VALID UNTIL 0855Z
RI NY NJ PA DE MD AND MA RI NJ NY CT CSTL WTRS
FROM 30SSE PVD-60SSE ACK-110SSE HTO-40N SBY-30SSW ETX-30SSE PVD
AREA EMBD TS MOV FROM 24020KT. TOPS TO FL350.

AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist), from 2:00 am EDT (06:00 UTC). Over the first 676 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft, from 2:00 am EDT (06:00 UTC). Over the first 239 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist), from 2:00 am EDT (06:00 UTC). Over the route from 179 to 507 nm out.
AIRMET TANGO 5W: moderate turbulence below 18,000 ft (due to mountain wave) up to 10,000 ft, from 2:00 am EDT (06:00 UTC). Near the route, 298 nm along 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 EWR.

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

C560 at 13,000 ft, 11 nm southeast, 2:38 am EDT (06:38 UTC): moderate turbulence, overcast above 19,000 ft, heavy rain, remarks: during the descent. 80 nm along the route, 11 nm southeast of the line.
as filed, and in English
```
PHL UA /OV 20 NW PHL/TM 0638/FL130 /TP C560/SK OVC190/WX +RA/TB MOD/RM DURD
```
Report
a routine report filed through PHL
Where
20 northwest phl
Time
06:38 UTC
Height
at 13,000 ft
Aircraft
C560
Sky
overcast from 19,000 ft
Weather
heavy rain
Turbulence
moderate
Remarks
during the descent
B763 at 800 ft, 18 nm east, 1:51 am EDT (05:51 UTC): a broken layer, remarks: bases at at 80,000 ft and tops 1500. At the departure end, 18 nm east of the line.
as filed, and in English
```
JFK UA /OV JFK 2 MILES SOUTHEAST/TM 0551/FL008/TP B763/SK BKN/RM BASES AT 800 AND TOPS 1500
```
Report
a routine report filed through JFK
Where
jfk 2 miles southeast
Time
05:51 UTC
Height
at 800 ft
Aircraft
B763
Sky
a broken layer
Remarks
bases at at 80,000 ft and tops 1500
B737 at 800 ft, 40 nm south, 3:30 am EDT (07:30 UTC): remarks: bases 800 ft. 139 nm along the route, 40 nm south of the line.
as filed, and in English
```
BWI UA /OV BWI/TM 0730/FL008/TP B737/RM BASES 008
```
Report
a routine report filed through BWI
Where
over BWI
Time
07:30 UTC
Height
at 800 ft
Aircraft
B737
Remarks
bases 800 ft

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 14 forecast points nearest it (JFK, AVP, PSB, EKN, CRW, TRI, TYS, BNA, HSV, 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	+8 kt	12 °C	112 kt	12 h 10 min	2:49 pm CDT (19:49 UTC)
6,500 ft	280° at 10 kt	+8 kt	14 °C	112 kt	12 h 10 min	2:49 pm CDT (19:49 UTC)
8,500 ft	290° at 13 kt	+9 kt	11 °C	111 kt	12 h 16 min	2:55 pm CDT (19:55 UTC)
10,500 ft	300° at 14 kt	+8 kt	8 °C	112 kt	12 h 10 min	2:49 pm CDT (19:49 UTC)
12,500 ft	310° at 13 kt	+6 kt	4 °C	114 kt	11 h 57 min	2:36 pm CDT (19:36 UTC)
14,500 ft	300° at 15 kt	+7 kt	0 °C	113 kt	12 h 03 min	2:42 pm CDT (19:42 UTC)
16,500 ft	300° at 16 kt	+8 kt	-4 °C	112 kt	12 h 10 min	2:49 pm CDT (19:49 UTC)
18,000 ft FL180	300° at 17 kt	+9 kt	-7 °C	111 kt	12 h 16 min	2:55 pm CDT (19:55 UTC)
24,000 ft FL240	300° at 20 kt	+11 kt	-18 °C	109 kt	12 h 30 min	3:09 pm CDT (20:09 UTC)
30,000 ft FL300	300° at 32 kt	+15 kt	-32 °C	105 kt	12 h 58 min	3:37 pm CDT (20:37 UTC)
34,000 ft FL340	300° at 35 kt	+19 kt	-40 °C	101 kt	13 h 29 min	4:08 pm CDT (21:08 UTC)
39,000 ft FL390	300° at 34 kt	+16 kt	-50 °C	104 kt	13 h 06 min	3:45 pm CDT (20:45 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; 41 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°
AVP	used from 50 nm out; 67 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 99 nm out; 88 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 199 nm out; 60 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; 14 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°
TRI	used from 447 nm out; 72 nm from the line		330/22 11°	330/29 7°	330/32 3°	330/36 -8°	320/34 -19°	320/36 -34°	320/43 -39°	320/46 -47°
TYS	used from 497 nm out; 73 nm from the line	320/20	340/18 11°	340/32 9°	340/36 4°	330/37 -7°	330/38 -19°	330/50 -34°	330/53 -38°	330/44 -48°
BNA	used from 596 nm out; 29 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°
HSV	used from 696 nm out; 70 nm from the line	310/20	330/20 16°	320/27 11°	340/23 5°	320/23 -7°	340/30 -17°	320/50 -33°	330/61 -41°	340/41 -50°
MEM	used from 746 nm out; 61 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 895 nm out; 78 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 994 nm out; 48 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 1143 nm out; 69 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 1292 nm out; 45 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
EWR Newark, NJ	departure	marginal VFR Sky: scattered clouds at 800 feet, overcast at 1,100 feet	from the north (010°) at 11 knots	10+ mi	1,100 ft	17 ft	2:51 am EDT (06:51 UTC)
LNS Lancaster, PA	99 nm out, 7 nm northwest of the line, tower	marginal VFR Sky: overcast at 1,000 feet	from the north-northeast (020°) at 7 knots	10+ mi	1,000 ft	402 ft	07:11 UTC
MRB Martinsburg, WV	189 nm out, 4 nm south of the line, tower	marginal VFR Sky: a broken layer at 1,300 feet, a broken layer at 3,800 feet, overcast at 9,000 feet Weather: light rain	from the north-northwest (330°) at 8 knots	10+ mi	1,300 ft	564 ft	07:09 UTC
CRW Charleston, WV	368 nm out, 14 nm northwest of the line, tower	IFR Sky: a broken layer at 600 feet, overcast at 1,400 feet Weather: light rain, mist	from the west-northwest (290°) at 4 knots	4 mi	600 ft	947 ft	07:07 UTC
CPF Hazard, KY	467 nm out, 3 nm south of the line	low IFR Sky: a broken layer at 400 feet, overcast at 2,200 feet	from the west-southwest (250°) at 4 knots	7 mi	400 ft	1,256 ft	07:35 UTC
MQY Smyrna, TN	646 nm out, 1 nm east of the line, tower	reported, no category	calm		200 ft	543 ft	07:32 UTC
SNH Savannah, TN	746 nm out, 5 nm east of the line	VFR Sky: a few clouds at 4,300 feet	calm	10+ mi	none	472 ft	07:10 UTC
GLH Greenville, MS	915 nm out, 18 nm southeast of the line, tower	VFR	from the south-southwest (210°) at 8 knots	10+ mi	none	130 ft	06:53 UTC
SHV Shreveport, LA	1064 nm out, 7 nm northwest of the line, tower	VFR	from the south (190°) at 7 knots	10+ mi	none	257 ft	06:56 UTC
DKR Crockett, TX	1173 nm out, 5 nm southeast of the line	no report just now				348 ft
HYI Austin, TX	1322 nm out, 2 nm south of the line, tower	VFR Sky: scattered clouds at 2,500 feet	from the southeast (140°) at 4 knots	10+ mi	none	594 ft	06:56 UTC
SAT San Antonio, TX	destination	VFR Sky: a few clouds at 2,300 feet, a broken layer at 25,000 feet	from the east-southeast (120°) at 7 knots	10+ mi	25,000 ft	809 ft	1:51 am CDT (06:51 UTC)

The highest airport on this list sits at 1,256 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, 2:36 pm CDT (19:36 UTC)

Wind from the south-southeast at 12 knots, visibility more than 6 miles, showers nearby, a broken layer at 3,500 feet VFR

The whole forecast for SAT

From Mon 1:00 am CDT (06:00 UTC): wind from the southeast at 8 knots, visibility more than 6 miles, a few clouds at 1,500 feet, a few clouds at 25,000 feet
From Mon 5:00 am CDT (10:00 UTC): wind from the southeast at 6 knots, visibility more than 6 miles, overcast at 1,500 feet
From Mon 12:00 pm CDT (17:00 UTC): wind from the south-southeast at 12 knots, visibility more than 6 miles, showers nearby, a broken layer at 3,500 feet
From Tue 2:00 am CDT (07:00 UTC): wind from the south-southeast at 9 knots, visibility more than 6 miles, overcast at 1,500 feet
At times between Tue 4:00 am CDT (09:00 UTC) and 7:00 am CDT (12:00 UTC): a broken layer at 800 feet

The forecast for EWR, the departure

From Mon 2:00 am EDT (06:00 UTC): wind from the north-northeast at 14 knots, visibility more than 6 miles, showers nearby, overcast at 800 feet
From Mon 8:00 am EDT (12:00 UTC): wind from the north at 10 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 9 knots, visibility more than 6 miles, a broken layer at 2,500 feet
From Mon 1:00 pm EDT (17:00 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
From Mon 11:00 pm EDT (03:00 UTC): wind from the north at 4 knots, visibility more than 6 miles, a few clouds at 5,000 feet, a few clouds at 15,000 feet

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

5/2811 NEW YORK, NY, Monday, October 20, 2025 through Tuesday, October 20, 2026 Local 9 nm from the route, at the departure end · security · until 20 October · ZNY
4/9383 WASHINGTON, DC., USA 21 nm from the route, 169 nm along the route · security · ZDC
6/0708 Goodlettsville, TN, Saturday, August 1, 2026 through Sunday, August 1, 2027 UTC 21 nm from the route, 646 nm along the route · security · until 1 August · ZME

Daylight

Sunset at EWR 6:21 pm EDT (22:21 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 central Great Lakes · loop National Weather Service

Radar now, the lower Mississippi valley · 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: Newark Liberty International, San Antonio International.