Plan a flight · Sun 6:51 pm PDT (01:51 UTC)

San Francisco International to George Bush Intcntl/Houston Airport SFO → IAH

1,419 nautical miles (1,632 statute miles) east on a straight line, true course 101°, about 087° magnetic at the departure end (variation 14E). At 120 knots that is 9 h 13 min at the quickest height in today's winds (34,000 ft, a 34-knot tailwind), arriving about 6:04 am CDT (11:04 UTC), after sunset at the destination. Right now SFO is VFR, wind from the west-southwest (240°) at 13 knots; IAH 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: 7,204 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 4W: thunderstorms (a convective SIGMET) up to 28,000 ft, moving from the southwest at 20 knots, until 7:55 pm PDT (02:55 UTC). Over the route from 490 to 579 nm out.

as issued

WSUS33 KKCI 120055
MKCW WST 120055
CONVECTIVE SIGMET 4W
VALID UNTIL 0255Z
AZ
FROM 60NE TBC-30S INW-100ESE BZA-70SE EED-50NW TBC-60NE TBC
DMSHG AREA EMBD TS MOV FROM 21020KT. TOPS TO FL280.

SIGMET 2W: thunderstorms (a convective SIGMET) up to 36,000 ft, moving from the southwest at 40 knots, until 7:55 pm PDT (02:55 UTC). Over the route from 639 to 779 nm out.

as issued

WSUS33 KKCI 120055
MKCW WST 120055
CONVECTIVE SIGMET 2W
VALID UNTIL 0255Z
TX NM AZ
FROM 50NNW SJN-60WNW CME-60E ELP-70SSW SSO-50SW TUS-50NNW SJN
AREA SEV TS MOV FROM 23040KT. TOPS TO FL360.
HAIL TO 1 IN...WIND GUSTS TO 50KT POSS.

SIGMET 1W: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 40 knots, until 7:55 pm PDT (02:55 UTC). Over the route from 799 to 839 nm out.

as issued

WSUS33 KKCI 120055
MKCW WST 120055
CONVECTIVE SIGMET 1W
VALID UNTIL 0255Z
CO NM WY AZ UT
FROM 40NNW CHE-40WNW TBE-60WNW CME-40N SJN-40ESE MTU-40NNW CHE
AREA SEV TS MOV FROM 23040KT. TOPS TO FL340.
WIND GUSTS TO 60KT POSS.

AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 30 nm of the route.
AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Over the route from 160 to 280 nm out.
AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 270 to 509 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 310 to 859 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 360 to 589 nm out.
AIRMET SIERRA 2E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 400 to 539 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 400 to 440 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 659 to 769 nm out.
AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft. Over the route from 689 to 869 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 SFO.

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

E75L at 18,000 ft, 31 nm north, 4:24 pm PDT (23:24 UTC): moderate turbulence from 18,000 ft to 22,000 ft, remarks: mountain wave a 10-knot loss of airspeed entered by zoa fdcs. 180 nm along the route, 31 nm north of the line.
as filed, and in English
```
LOL UA /OV BIH300011/TM 2324/FL 180/TP E75L/TB MOD 180-220/RM MTN WAVE /-10 ENTERED BY ZOA FDCS AWC-WEB
```
Report
a routine report filed through LOL
Where
11 nm northwest (300°) of BIH
Time
23:24 UTC
Height
at 18,000 ft
Aircraft
E75L
Turbulence
moderate from 18,000 ft to 22,000 ft
Remarks
mountain wave a 10-knot loss of airspeed entered by zoa fdcs
G280 at 41,000 ft, 47 nm south, 4:37 pm PDT (23:37 UTC): light to moderate clear-air turbulence, remarks: ZDVWC-46. 350 nm along the route, 47 nm south of the line.
as filed, and in English
```
ALS UA /OV LAS190035/TM 2337/FL410/TP G280/TB LGT-MOD CAT/RM ZDVWC-46
```
Report
a routine report filed through ALS
Where
35 nm south (190°) of LAS
Time
23:37 UTC
Height
at 41,000 ft
Aircraft
G280
Turbulence
light to moderate clear-air turbulence
Remarks
ZDVWC-46
B737 at 24,000 ft, 32 nm north, 4:29 pm PDT (23:29 UTC): light rime icing, -21 °C, remarks: during the descent during the descent choww arv zlawc. 400 nm along the route, 32 nm north of the line.
as filed, and in English
```
CDC UA /OV MMM120015/TM 2329/FL240/TP B737/TA M21/IC LGT RIME/RM DURD DURD CHOWW ARV /ZLAWC AWC-WEB
```
Report
a routine report filed through CDC
Where
15 nm southeast (120°) of MMM
Time
23:29 UTC
Height
at 24,000 ft
Aircraft
B737
Temperature
−21 °C
Icing
light rime
Remarks
during the descent during the descent choww arv zlawc
B38M at 27,000 ft, 41 nm north, 5:03 pm PDT (00:03 UTC): light rime icing, -27 °C, remarks: during the descent. 410 nm along the route, 41 nm north of the line.
as filed, and in English
```
CDC UA /OV MMM085025/TM 0003/FL270/TP B38M/TA M27/IC LGT RIME/RM DURD AWC-WEB
```
Report
a routine report filed through CDC
Where
25 nm east (085°) of MMM
Time
00:03 UTC
Height
at 27,000 ft
Aircraft
B38M
Temperature
−27 °C
Icing
light rime
Remarks
during the descent
B38M at 23,000 ft, 9 nm north, 4:04 pm PDT (23:04 UTC): light rime icing from 23,000 ft to 25,000 ft, -25 °C, remarks: zlawc. 420 nm along the route, 9 nm north of the line.
as filed, and in English
```
LAS UA /OV BLD064047/TM 2304/FL230/TP B38M/TA M25/IC LGT RIME 230-250/RM ZLAWC AWC-WEB
```
Report
a routine report filed through LAS
Where
47 nm northeast (064°) of BLD
Time
23:04 UTC
Height
at 23,000 ft
Aircraft
B38M
Temperature
−25 °C
Icing
light rime from 23,000 ft to 25,000 ft
Remarks
zlawc
PC12 at 14,000 ft, 46 nm south, 6:03 pm PDT (01:03 UTC): light rime icing, remarks: zab/fdcs. 519 nm along the route, 46 nm south of the line.
as filed, and in English
```
FLG UA /OV FLG210030/TM 0103/FL140/TP PC12/TA UNK/IC LGT RIME/RM ZAB/FDCS
```
Report
a routine report filed through FLG
Where
30 nm southwest (210°) of FLG
Time
01:03 UTC
Height
at 14,000 ft
Aircraft
PC12
Temperature
UNK
Icing
light rime
Remarks
zab/fdcs
G280 at 45,000 ft, 29 nm north, 4:44 pm PDT (23:44 UTC): light to moderate turbulence, remarks: zab fdcs. 589 nm along the route, 29 nm north of the line.
as filed, and in English
```
INW UA /OV INW015040/TM 2344/FL450/TP G280/TB LGT-MOD/RM ZAB FDCS
```
Report
a routine report filed through INW
Where
40 nm north (015°) of INW
Time
23:44 UTC
Height
at 45,000 ft
Aircraft
G280
Turbulence
light to moderate
Remarks
zab fdcs
B39M at 27,000 ft, 2 nm south, 5:42 pm PDT (00:42 UTC): light chop turbulence, remarks: zhu. At the destination end, 2 nm south of the line.
as filed, and in English
```
IAH UA /OV IH340035/TM 0042/FL270/TP B39M/TB LT CHOP DURC/RM ZHU
```
Report
a routine report filed through IAH
Where
IH340035
Time
00:42 UTC
Height
at 27,000 ft
Aircraft
B39M
Turbulence
lt chop during the climb
Remarks
zhu

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 11 forecast points nearest it (SFO, FAT, BIH, LAS, PRC, ABQ, ROW, LBB, ABI, CLL, HOU). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
5,500 ft	190° at 18 kt	+5 kt	15 °C	115 kt	12 h 20 min	9:11 am CDT (14:11 UTC)
7,500 ft	200° at 22 kt	0	10 °C	120 kt	11 h 50 min	8:41 am CDT (13:41 UTC)
9,500 ft	210° at 23 kt	−4 kt	8 °C	124 kt	11 h 27 min	8:18 am CDT (13:18 UTC)
11,500 ft	220° at 25 kt	−8 kt	4 °C	128 kt	11 h 05 min	7:56 am CDT (12:56 UTC)
13,500 ft	220° at 28 kt	−11 kt	0 °C	131 kt	10 h 50 min	7:41 am CDT (12:41 UTC)
15,500 ft	220° at 30 kt	−13 kt	-4 °C	133 kt	10 h 40 min	7:31 am CDT (12:31 UTC)
17,500 ft	230° at 33 kt	−15 kt	-8 °C	135 kt	10 h 31 min	7:22 am CDT (12:22 UTC)
18,000 ft FL180	230° at 34 kt	−16 kt	-9 °C	136 kt	10 h 26 min	7:17 am CDT (12:17 UTC)
24,000 ft FL240	230° at 41 kt	−22 kt	-19 °C	142 kt	10 h	6:51 am CDT (11:51 UTC)
30,000 ft FL300	230° at 51 kt	−29 kt	-27 °C	149 kt	9 h 31 min	6:22 am CDT (11:22 UTC)
34,000 ft FL340	240° at 51 kt	−34 kt	-36 °C	154 kt	9 h 13 min	6:04 am CDT (11:04 UTC)
39,000 ft FL390	240° at 45 kt	−33 kt	-47 °C	153 kt	9 h 16 min	6:07 am CDT (11:07 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
SFO	used from 0 nm out; 25 nm from the line	220/11	L/V 5°	280/7 1°	270/15 -3°	290/23 -14°	310/29 -24°	280/26 -28°	250/30 -34°	250/36 -43°
FAT	used from 50 nm out; 64 nm from the line	180/7	170/9 7°	200/20 3°	210/27 -3°	240/27 -14°	230/38 -24°	220/57 -27°	230/42 -33°	230/41 -44°
BIH	used from 150 nm out; 30 nm from the line		L/V	210/14 6°	210/20 -2°	230/26 -14°	220/32 -24°	220/63 -27°	220/56 -35°	230/50 -44°
LAS	used from 250 nm out; 85 nm from the line		200/25 11°	230/22 5°	240/25 -1°	220/37 -12°	220/44 -21°	210/52 -27°	210/60 -34°	220/58 -44°
PRC	used from 450 nm out; 68 nm from the line			200/36 6°	210/46 0°	220/60 -10°	220/75 -19°	220/66 -26°	230/70 -33°	230/59 -45°
ABQ	used from 649 nm out; 115 nm from the line			200/28 13°	210/28 5°	210/44 -7°	230/46 -20°	230/80 -28°	240/74 -35°	240/58 -47°
ROW	used from 849 nm out; 35 nm from the line		180/23	190/24 15°	210/27 7°	230/35 -6°	240/53 -17°	240/62 -27°	250/64 -38°	260/60 -50°
LBB	used from 999 nm out; 65 nm from the line		180/26 20°	210/21 13°	230/21 7°	250/25 -5°	250/34 -16°	250/52 -28°	260/47 -38°	260/49 -50°
ABI	used from 1099 nm out; 49 nm from the line		180/26 17°	220/18 12°	230/25 8°	230/28 -5°	240/29 -14°	250/35 -28°	270/37 -39°	280/37 -51°
CLL	used from 1249 nm out; 82 nm from the line	160/18	190/18 16°	200/19 12°	220/14 7°	260/18 -5°	250/20 -13°	290/29 -29°	290/31 -40°	300/22 -53°
HOU	used from 1399 nm out; 28 nm from the line	160/18	160/14 17°	180/19 12°	190/11 8°	260/12 -4°	260/14 -13°	310/26 -30°	310/30 -40°	320/21 -52°

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
SFO San Francisco, CA	departure	VFR Sky: a few clouds at 2,000 feet, a few clouds at 5,000 feet	from the west-southwest (240°) at 13 knots	10+ mi	none	13 ft	5:56 pm PDT (00:56 UTC)
MER Atwater, CA	90 nm out, 4 nm northwest of the line, tower	VFR	calm	10+ mi	none	190 ft	23:55 UTC
BTY Beatty, NV	270 nm out, 13 nm north of the line	no report just now				3,169 ft
VGT Las Vegas, NV	360 nm out, 7 nm southwest of the line, tower	VFR	from the south (170°) at 11 knots, gusting to 18	10+ mi	none	2,205 ft	00:53 UTC
FLG Flagstaff, AZ	539 nm out, 19 nm south of the line, tower	IFR Sky: a broken layer at 700 feet, overcast at 1,300 feet Weather: light rain, mist	from the south-southwest (210°) at 18 knots, gusting to 31	4 mi	700 ft	7,014 ft	00:57 UTC
INW Winslow, AZ	579 nm out, 13 nm south of the line	VFR	from the south-southwest (200°) at 16 knots, gusting to 27	10+ mi	none	4,941 ft	00:56 UTC
ONM Socorro, NM	779 nm out, 8 nm south of the line	VFR Sky: scattered clouds at 6,000 feet, scattered clouds at 7,000 feet, a broken layer at 9,000 feet	from the west-southwest (250°) at 23 knots, gusting to 31	10+ mi	9,000 ft	4,875 ft	23:35 UTC
ROW Roswell, NM	909 nm out, 6 nm southwest of the line, tower	VFR	from the south-southeast (150°) at 8 knots	10+ mi	none	3,671 ft	00:51 UTC
GNC Seminole, TX	1009 nm out, 6 nm south of the line	VFR	from the south-southeast (160°) at 8 knots	10+ mi	none	3,314 ft	01:30 UTC
LZZ Lampasas, TX	1259 nm out, 3 nm west of the line	VFR	from the south-southeast (160°) at 4 knots	10+ mi	none	1,214 ft	01:35 UTC
GRK Fort Hood (Killeen), TX	1279 nm out, 5 nm northwest of the line, tower	VFR	from the south-southeast (160°) at 4 knots	10+ mi	none	1,015 ft	00:55 UTC
IAH Houston, TX	destination	VFR Sky: a broken layer at 25,000 feet	from the southeast (130°) at 10 knots	10+ mi	25,000 ft	95 ft	7:53 pm CDT (00:53 UTC)

The highest airport on this list sits at 7,014 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At IAH when you get there the forecast at the estimated arrival, 6:04 am CDT (11:04 UTC)

Wind from the east-southeast at 4 knots, visibility more than 6 miles, scattered clouds at 2,500 feet, scattered clouds at 25,000 feet VFR

The whole forecast for IAH

From Sun 7:00 pm CDT (00:00 UTC): wind from the south-southeast at 12 knots, visibility more than 6 miles, a few clouds at 25,000 feet
From Sun 9:00 pm CDT (02:00 UTC): wind from the south-southeast at 7 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
From Mon 4:00 am CDT (09:00 UTC): wind from the east-southeast at 4 knots, visibility more than 6 miles, scattered clouds at 2,500 feet, scattered clouds at 25,000 feet
From Mon 12:00 pm CDT (17:00 UTC): wind from the southeast at 11 knots, visibility more than 6 miles, scattered clouds at 3,500 feet, a broken layer at 25,000 feet
30% chance between Mon 1:00 pm CDT (18:00 UTC) and 5:00 pm CDT (22:00 UTC): light rain showers

The forecast for SFO, the departure

From Sun 5:00 pm PDT (00:00 UTC): wind from the west-southwest at 16 knots, visibility more than 6 miles, a few clouds at 2,000 feet
From Sun 7:00 pm PDT (02:00 UTC): wind from the west-southwest at 8 knots, visibility more than 6 miles, a few clouds at 2,000 feet
From Mon 1:00 am PDT (08:00 UTC): wind from the south-southeast at 4 knots, visibility more than 6 miles, clear skies
From Mon 11:00 am PDT (18:00 UTC): wind from the east-northeast at 5 knots, visibility more than 6 miles, clear skies
From Mon 3:00 pm PDT (22:00 UTC): wind from the west at 10 knots, visibility more than 6 miles, clear skies

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

6/7231 Santa Clara, CA, Sunday, October 11, 2026 through Monday, October 12, 2026 UTC 8 nm from the route, at the departure end · drones kept away from a public gathering · until 12 October · ZOA
6/7094 45NM NE MERCED, CA, Sunday, October 4, 2026 through Tuesday, October 20, 2026 UTC 18 nm from the route, 120 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 20 October · ZOA
6/8890 LAS VEGAS, NV, Tuesday, October 13, 2026 Local on the route, 330 nm along the route · a VIP movement · starts tomorrow · ZLA
6/8808 Las Vegas, NV, Tuesday, October 13, 2026 Local 10 nm from the route, 360 nm along the route · security · starts tomorrow · ZLA
6/8722 ALAMOGORDO, NM, Tuesday, October 13, 2026 Local on the route, 829 nm along the route · security · starts tomorrow · ZAB

Daylight

Sunset at SFO 6:36 pm PDT (01:36 UTC), at IAH 6:54 pm CDT (23:54 UTC) (civil twilight ends 7:18 pm CDT (00:18 UTC)). At 120 knots the arrival at IAH is before sunrise there (7:21 am CDT (12:21 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 Pacific Southwest · loop National Weather Service

Radar now, the southern Rockies · 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: San Francisco International, George Bush Intcntl/Houston Airport.