Plan a flight · Mon 6:59 am EDT (10:59 UTC)

Trenton Mercer Airport to San Antonio International TTN → SAT

1,325 nautical miles (1,525 statute miles) west on a straight line, true course 248°, about 260° magnetic at the departure end (variation 12W). At 120 knots that is 11 h 31 min at the quickest height in today's winds (10,500 ft, a 5-knot headwind), arriving about 5:30 pm CDT (22:30 UTC). 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

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 618 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 33,000 ft. Over the first 70 nm of the route.
AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 6,000 ft. Over the route from 130 to 299 nm out.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 159 to 528 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 TTN.

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

urgent SF50 descending, 36 nm northeast, 6:50 am EDT (10:50 UTC): light turbulence, overcast above 1,200 ft, remarks: during the descent runway 5. At the departure end, 36 nm northeast of the line.
as filed, and in English
```
MMU UUA /OV MMU/TM 1050/FLDURD/TP SF50/SK OVC012/TB LGT/RM DURD RWY 5
```
Report
an urgent report filed through MMU
Where
over MMU
Time
10:50 UTC
Height
during the descent
Aircraft
SF50
Sky
overcast from 1,200 ft
Turbulence
light
Remarks
during the descent runway 5
E170 at 23,000 ft, 46 nm south, 6:28 am EDT (10:28 UTC): moderate turbulence above 23,000 ft. At the departure end, 46 nm south of the line.
as filed, and in English
```
DOV UA /OV ENO/TM 1028/FLF230/TP E170/TB MOD 230
```
Report
a routine report filed through DOV
Where
over ENO
Time
10:28 UTC
Height
at F230
Aircraft
E170
Turbulence
moderate at 23,000 ft
E75S at 15,000 ft, 20 nm southeast, 6:35 am EDT (10:35 UTC): moderate turbulence, remarks: dca arrival from 12,000 ft to 15,000 ft during the descent. 80 nm along the route, 20 nm southeast of the line.
as filed, and in English
```
BWI UA /OV BAL060030/TM 1035/FL150/TP E75S/TB MOD/RM DCA ARRIVAL 120-150 DURD
```
Report
a routine report filed through BWI
Where
30 nm northeast (060°) of BAL
Time
10:35 UTC
Height
at 15,000 ft
Aircraft
E75S
Turbulence
moderate
Remarks
dca arrival from 12,000 ft to 15,000 ft during the descent
A321 at 32,000 ft, 41 nm north, 5:48 am EDT (09:48 UTC): moderate chop turbulence. 309 nm along the route, 41 nm north of the line.
as filed, and in English
```
CRW UA /OV HVQ045040/TM 0948/FL320/TP A321/TB OCNL MOD CHOP
```
Report
a routine report filed through CRW
Where
40 nm northeast (045°) of HVQ
Time
09:48 UTC
Height
at 32,000 ft
Aircraft
A321
Turbulence
occasional moderate chop
A320 at 21,000 ft, 36 nm southeast, 6:45 am EDT (10:45 UTC): moderate chop turbulence, remarks: zhu. At the destination end, 36 nm southeast of the line.
as filed, and in English
```
SAT UA /OV SAT090060/TM 1045/FL210/TP A320/TB OCNL MOD CHOP/RM ZHU
```
Report
a routine report filed through SAT
Where
60 nm east (090°) of SAT
Time
10:45 UTC
Height
at 21,000 ft
Aircraft
A320
Turbulence
occasional moderate chop
Remarks
zhu
B738 climbing, 20 nm southeast, 6:33 am EDT (10:33 UTC): remarks: during the climb runway 01 ilg bases 700 ft. At the departure end, 20 nm southeast of the line.
as filed, and in English
```
ILG UA /OV KILG/TM 1033/FLDURC/TP B738/RM DURC RY01 ILG BASES 007
```
Report
a routine report filed through ILG
Where
over KILG
Time
10:33 UTC
Height
during the climb
Aircraft
B738
Remarks
during the climb runway 01 ilg bases 700 ft
B739 at 20,000 ft, 20 nm southeast, 6:05 am EDT (10:05 UTC): light rime icing, -10 °C. At the departure end, 20 nm southeast of the line.
as filed, and in English
```
ILG UA /OV DQO/TM 1005/FL200/TP B739/TA M10/IC LGT RIME
```
Report
a routine report filed through ILG
Where
over DQO
Time
10:05 UTC
Height
at 20,000 ft
Aircraft
B739
Temperature
−10 °C
Icing
light rime
B737 at 700 ft, 29 nm south, 5:33 am EDT (09:33 UTC): remarks: light rain. 100 nm along the route, 29 nm south of the line.
as filed, and in English
```
BWI UA /OV BWI/TM 0933/FL007/TP B737/RM LIGHT RAIN
```
Report
a routine report filed through BWI
Where
over BWI
Time
09:33 UTC
Height
at 700 ft
Aircraft
B737
Remarks
light rain
B39M descending, 27 nm south, 6:42 am EDT (10:42 UTC): overcast above 4,000 ft. 140 nm along the route, 27 nm south of the line.
as filed, and in English
```
IAD UA /OV RWY 1R/TM 1042/FLDURD/TP B39M/SK OVC 040/WX 10 SM
```
Report
a routine report filed through IAD
Where
runway 1R
Time
10:42 UTC
Height
during the descent
Aircraft
B39M
Sky
overcast from 4,000 ft
Weather
10, miles
B738 at 33,000 ft, 2 nm southeast, 4:44 am EDT (08:44 UTC): -39 °C, wind 350° at 65 knots, remarks: produced by skypath. 269 nm along the route, 2 nm southeast of the line.
as filed, and in English
```
EKN UA /OV EKN188027 /TM 0844 /FL330 /TP B738 /TA M39 /WV 35065KT /TB MOD-CONS /RM PRODUCED BY SKYPATH
```
Report
a routine report filed through EKN
Where
27 nm south (188°) of EKN
Time
08:44 UTC
Height
at 33,000 ft
Aircraft
B738
Temperature
−39 °C
Wind
from 350° at 65 knots
Turbulence
mod-cons
Remarks
produced by skypath
CRJ9 climbing, 24 nm north, 6:15 am EDT (10:15 UTC): a broken layer above 1,300 ft. 339 nm along the route, 24 nm north of the line.
as filed, and in English
```
CRW UA /OV CRW/TM 1015/FLDURC/TP CRJ9/SK BKN013-TOPUNKN
```
Report
a routine report filed through CRW
Where
over CRW
Time
10:15 UTC
Height
during the climb
Aircraft
CRJ9
Sky
a broken layer from 1,300 ft, tops unknown
A320 at 2,300 ft, 7 nm north, 6:37 am EDT (10:37 UTC): remarks: KSAT base 2,300 ft, on top 4,000 ft. At the destination end, 7 nm north of the line.
as filed, and in English
```
SAT UA /OV SAT/TM 1037/FL023/TP A320/RM KSAT BASE 023, ON TOP 040
```
Report
a routine report filed through SAT
Where
over SAT
Time
10:37 UTC
Height
at 2,300 ft
Aircraft
A320
Remarks
KSAT base 2,300 ft, on top 4,000 ft

Winds aloft along the route, and the time en route the forecast for use 08:00–15:00 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 13 forecast points nearest it (ACY, 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	280° at 9 kt	+8 kt	11 °C	112 kt	11 h 50 min	5:49 pm CDT (22:49 UTC)
6,500 ft	290° at 9 kt	+7 kt	14 °C	113 kt	11 h 44 min	5:43 pm CDT (22:43 UTC)
8,500 ft	310° at 12 kt	+6 kt	11 °C	114 kt	11 h 37 min	5:36 pm CDT (22:36 UTC)
10,500 ft	310° at 13 kt	+5 kt	8 °C	115 kt	11 h 31 min	5:30 pm CDT (22:30 UTC)
12,500 ft	310° at 14 kt	+6 kt	4 °C	114 kt	11 h 37 min	5:36 pm CDT (22:36 UTC)
14,500 ft	310° at 16 kt	+7 kt	0 °C	113 kt	11 h 44 min	5:43 pm CDT (22:43 UTC)
16,500 ft	310° at 17 kt	+8 kt	-4 °C	112 kt	11 h 50 min	5:49 pm CDT (22:49 UTC)
18,000 ft FL180	310° at 19 kt	+9 kt	-7 °C	111 kt	11 h 56 min	5:55 pm CDT (22:55 UTC)
24,000 ft FL240	310° at 21 kt	+8 kt	-18 °C	112 kt	11 h 50 min	5:49 pm CDT (22:49 UTC)
30,000 ft FL300	320° at 34 kt	+9 kt	-32 °C	111 kt	11 h 56 min	5:55 pm CDT (22:55 UTC)
34,000 ft FL340	320° at 41 kt	+10 kt	-40 °C	110 kt	12 h 03 min	6:02 pm CDT (23:02 UTC)
39,000 ft FL390	320° at 35 kt	+6 kt	-51 °C	114 kt	11 h 37 min	5:36 pm CDT (22:36 UTC)

Based on data from the 12th at 06:00 UTC; valid on the 12th at 12:00 UTC for use 08:00 to 15:00 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; 52 nm from the line	350/12	340/12 11°	340/12 6°	340/13 2°	270/10 -10°	240/17 -23°	230/46 -33°	230/46 -40°	240/46 -49°
PSB	used from 100 nm out; 92 nm from the line		020/21 12°	360/28 7°	360/29 1°	350/33 -10°	350/42 -22°	350/49 -37°	340/63 -43°	350/39 -52°
EKN	used from 149 nm out; 75 nm from the line		330/20 10°	350/29 7°	340/32 2°	340/44 -8°	350/50 -21°	350/63 -35°	340/69 -40°	330/42 -50°
CRW	used from 299 nm out; 25 nm from the line	320/17	340/23 12°	340/32 8°	340/35 4°	330/40 -7°	340/45 -20°	340/57 -34°	340/64 -42°	320/38 -50°
TRI	used from 399 nm out; 62 nm from the line		340/25 11°	350/37 9°	350/34 6°	340/39 -7°	340/43 -19°	340/55 -32°	330/58 -42°	320/37 -50°
TYS	used from 448 nm out; 71 nm from the line	330/16	350/32 14°	350/37 9°	340/30 5°	330/28 -6°	340/36 -19°	330/40 -33°	330/51 -41°	330/36 -51°
BNA	used from 548 nm out; 42 nm from the line	300/20	300/14 15°	300/14 10°	300/13 4°	310/22 -5°	280/24 -18°	310/37 -33°	310/50 -41°	320/49 -51°
HSV	used from 648 nm out; 61 nm from the line	300/20	310/14 16°	310/18 10°	310/15 4°	320/19 -5°	290/16 -18°	320/36 -32°	320/47 -41°	330/42 -50°
MEM	used from 698 nm out; 73 nm from the line	250/19	260/19 17°	270/20 12°	270/16 6°	270/21 -6°	290/27 -17°	300/37 -30°	300/49 -40°	310/40 -51°
LIT	used from 847 nm out; 84 nm from the line	250/22	250/25 18°	240/23 12°	240/20 7°	250/17 -6°	260/25 -17°	300/45 -29°	300/49 -40°	310/43 -51°
SHV	used from 947 nm out; 59 nm from the line	210/20	210/20 18°	230/20 11°	240/16 7°	270/17 -7°	250/11 -15°	300/34 -30°	310/34 -40°	320/36 -51°
CLL	used from 1096 nm out; 79 nm from the line	180/24	170/21 19°	180/10 14°	230/7 8°	230/16 -6°	260/20 -13°	290/23 -29°	320/21 -39°	340/35 -51°
SAT	used from 1246 nm out; 55 nm from the line	160/18	180/22 17°	190/16 14°	210/16 9°	220/16 -5°	200/11 -14°	250/8 -29°	330/8 -40°	020/26 -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	Elevation
TTN Trenton, NJ	departure	no report just now	212 ft
FDK Frederick, MD	130 nm out, 2 nm southeast of the line, tower	no report just now	308 ft
MRB Martinsburg, WV	159 nm out, 9 nm north of the line, tower	no report just now	564 ft
CRW Charleston, WV	339 nm out, 24 nm north of the line, tower	no report just now	947 ft
PBX Pikeville, KY	399 nm out, 2 nm east of the line	no report just now	1,464 ft
MQY Smyrna, TN	608 nm out, 6 nm northwest of the line, tower	no report just now	543 ft
CRX Corinth, MS	727 nm out, 2 nm southwest of the line	no report just now	425 ft
GLH Greenville, MS	877 nm out, 14 nm southeast of the line, tower	no report just now	130 ft
SHV Shreveport, LA	1026 nm out, 10 nm northwest of the line, tower	no report just now	257 ft
DKR Crockett, TX	1136 nm out, 3 nm southeast of the line	no report just now	348 ft
HYI Austin, TX	1285 nm out, 2 nm southwest of the line, tower	no report just now	594 ft
SAT San Antonio, TX	destination	no report just now	809 ft

The highest airport on this list sits at 1,464 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, 5:30 pm CDT (22:30 UTC)

SAT has no terminal forecast; use the nearest airport that does.

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

6/8800 Baltimore, MD, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 23 nm from the route, 100 nm along the route · drones kept away from a public gathering · starts Saturday 17 October · ZDC
4/9383 WASHINGTON, DC., USA 24 nm from the route, 130 nm along the route · security · ZDC
6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 18 nm from the route, 140 nm along the route · a VIP movement · today · ZDC

Daylight

Sunset at TTN 6:24 pm EDT (22:24 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: Trenton Mercer Airport, San Antonio International.