Plan a flight · Sun 8:04 pm PDT (03:04 UTC)

San Francisco International to Bozeman Yellowstone International SFO → BZN

701 nautical miles (807 statute miles) northeast on a straight line, true course 042°, about 028° magnetic at the departure end (variation 14E). At 120 knots that is 4 h 02 min at the quickest height in today's winds (34,000 ft, a 54-knot tailwind), arriving about 1:06 am MDT (07:06 UTC), after sunset at the destination. Right now SFO is VFR, wind from the southwest (220°) at 6 knots; BZN is low IFR, wind from the west-southwest (240°) at 3 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: 912 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 TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 207 nm of the route.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 336 to 622 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 197 nm of the route.
AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the last 188 nm of the route.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 513 to 661 nm out.
AIRMET ZULU 2C: moderate icing up to 20,000 ft. Over the last 59 nm of the route.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Near the route, at the destination end.

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

B38M descending, 19 nm southeast, 6:28 pm PDT (01:28 UTC): light chop turbulence, remarks: during the descent runway 35L rno. 158 nm along the route, 19 nm southeast of the line.
as filed, and in English
```
RNO UA /OV KRNO167009/TM 0128/FLUNKN/TP B38M/TB OCNL LGT CHOP/RM DURD RY35L RNO
```
Report
a routine report filed through RNO
Where
9 nm south (167°) of KRNO
Time
01:28 UTC
Height
height not given
Aircraft
B38M
Turbulence
occasional light chop
Remarks
during the descent runway 35L rno
PC12 at 14,000 ft, 4 nm southeast, 7:13 pm PDT (02:13 UTC): light turbulence up to 21,000 ft, light rime icing from 10,000 ft to 14,000 ft, -10 °C. 454 nm along the route, 4 nm southeast of the line.
as filed, and in English
```
BOI UA /OV BOI117049/TM 0213/FL140/TP PC12/TA M10/TB CONS LGT 210 BLO/IC LGT RIME 140-100 /ZLC
```
Report
a routine report filed through BOI
Where
49 nm southeast (117°) of BOI
Time
02:13 UTC
Height
at 14,000 ft
Aircraft
PC12
Temperature
−10 °C
Turbulence
continuous light at 21,000 ft below
Icing
light rime from 14,000 ft to 10,000 ft zlc
PC12 at 6,000 ft, 14 nm southeast, 6:09 pm PDT (01:09 UTC): scattered clouds up to 6,000 ft, remarks: multiple scattered layers during the descent runway 31. 513 nm along the route, 14 nm southeast of the line.
as filed, and in English
```
SUN UA /OV KSUN/TM 0109/FL060/TP PC12/SK SCT-TOP060/WX FV05SM/RM MULTIPLE SCT LAYERS DURD RY31
```
Report
a routine report filed through SUN
Where
over KSUN
Time
01:09 UTC
Height
at 6,000 ft
Aircraft
PC12
Sky
scattered clouds, tops 6,000 ft
Weather
flight visibility 5 miles
Remarks
multiple scattered layers during the descent runway 31
E75L descending, 0 nm northwest, 6:04 pm PDT (01:04 UTC): remarks: had the airport in sight at 400-500FT above ground. At the destination end, 0 nm northwest of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 0104/FLDURD/TP E75L/RM HAD THE AIRPORT IN SIGHT AT 400-500FT AGL
```
Report
a routine report filed through BZN
Where
over BZN
Time
01:04 UTC
Height
during the descent
Aircraft
E75L
Remarks
had the airport in sight at 400-500FT above ground
B737 descending, 0 nm northwest, 5:28 pm PDT (00:28 UTC): scattered clouds above 8,000 ft, fog, snow, remarks: broke out about 100FT above mins. At the destination end, 0 nm northwest of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 0028/FLDURD/TP B737/SK SCT080/WX 1/2SM SN FG/RM BROKE OUT ABOUT 100FT ABOVE MINS
```
Report
a routine report filed through BZN
Where
over BZN
Time
00:28 UTC
Height
during the descent
Aircraft
B737
Sky
scattered clouds from 8,000 ft
Weather
1/2SM, snow, fog
Remarks
broke out about 100FT above mins

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 6 forecast points nearest it (SFO, SAC, RNO, BAM, BOI, DLN). 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	360° at 4 kt	+3 kt	2 °C	117 kt	5 h 59 min	3:03 am MDT (09:03 UTC)
7,500 ft	350° at 4 kt	+2 kt	-2 °C	118 kt	5 h 56 min	3:00 am MDT (09:00 UTC)
9,500 ft	300° at 4 kt	−1 kt	-4 °C	121 kt	5 h 48 min	2:52 am MDT (08:52 UTC)
11,500 ft	240° at 12 kt	−12 kt	-6 °C	132 kt	5 h 19 min	2:23 am MDT (08:23 UTC)
13,500 ft	230° at 19 kt	−19 kt	-10 °C	139 kt	5 h 03 min	2:07 am MDT (08:07 UTC)
15,500 ft	220° at 24 kt	−24 kt	-13 °C	144 kt	4 h 52 min	1:56 am MDT (07:56 UTC)
17,500 ft	210° at 30 kt	−29 kt	-17 °C	149 kt	4 h 42 min	1:46 am MDT (07:46 UTC)
18,000 ft FL180	210° at 32 kt	−31 kt	-18 °C	151 kt	4 h 39 min	1:43 am MDT (07:43 UTC)
24,000 ft FL240	210° at 40 kt	−39 kt	-26 °C	159 kt	4 h 25 min	1:29 am MDT (07:29 UTC)
30,000 ft FL300	220° at 46 kt	−46 kt	-31 °C	166 kt	4 h 13 min	1:17 am MDT (07:17 UTC)
34,000 ft FL340	220° at 55 kt	−54 kt	-34 °C	174 kt	4 h 02 min	1:06 am MDT (07:06 UTC)
39,000 ft FL390	220° at 50 kt	−49 kt	-41 °C	169 kt	4 h 09 min	1:13 am MDT (07:13 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
SFO	used from 0 nm out; 25 nm from the line	120/13	090/14 5°	040/14 -1°	350/17 -5°	360/42 -14°	360/64 -23°	350/38 -32°	300/19 -37°	250/18 -44°
SAC	used from 49 nm out; 8 nm from the line	110/6	L/V 4°	010/11 -2°	350/11 -7°	340/24 -16°	360/44 -23°	330/24 -30°	270/21 -35°	230/23 -43°
RNO	used from 99 nm out; 44 nm from the line		010/9	320/10 -2°	210/23 -9°	210/34 -19°	220/36 -25°	230/31 -29°	230/41 -33°	230/38 -42°
BAM	used from 247 nm out; 70 nm from the line			310/7 0°	270/19 -7°	200/38 -17°	190/49 -28°	220/69 -29°	220/63 -33°	230/48 -41°
BOI	used from 395 nm out; 57 nm from the line		300/7 2°	280/5 -4°	210/16 -9°	210/60 -20°	210/75 -29°	210/63 -32°	220/64 -32°	220/54 -39°
DLN	used from 543 nm out; 70 nm from the line			090/6 -6°	240/22 -4°	210/34 -16°	210/62 -25°	210/66 -34°	210/82 -36°	220/77 -42°

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	from the southwest (220°) at 6 knots	10+ mi	none	13 ft	7:56 pm PDT (02:56 UTC)
CCR Concord, CA	30 nm out, 5 nm west of the line, tower	VFR	from the south (190°) at 10 knots	10+ mi	none	25 ft	02:53 UTC
MHR Sacramento, CA	79 nm out, 3 nm southwest of the line, tower	VFR	from the southwest (230°) at 9 knots	10+ mi	none	98 ft	02:35 UTC
TRK Truckee, CA	148 nm out, 8 nm southeast of the line, tower	VFR	from the south (190°) at 4 knots	10+ mi	none	5,904 ft	02:55 UTC
WMC Winnemucca, NV	286 nm out, 18 nm southeast of the line	VFR Sky: overcast at 11,000 feet	from the north-northwest (330°) at 10 knots	10+ mi	11,000 ft	4,307 ft	02:56 UTC
SUN Hailey, ID	513 nm out, 14 nm southeast of the line, tower	IFR Sky: overcast at 700 feet Weather: light rain	from the east-southeast (120°) at 8 knots	3 mi	700 ft	5,319 ft	02:50 UTC
EKS Ennis, MT	661 nm out, 10 nm southeast of the line	low IFR Sky: overcast at 300 feet Weather: light snow, mist	from the north-northwest (340°) at 16 knots, gusting to 21	1 mi	300 ft	5,432 ft	02:55 UTC
BZN Bozeman, MT	destination	low IFR Sky: a few clouds at 300 feet, overcast at 1,100 feet Weather: light snow, mist	from the west-southwest (240°) at 3 knots	0.75 mi	1,100 ft	4,473 ft	8:56 pm MDT (02:56 UTC)

The highest airport on this list sits at 5,904 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At BZN when you get there the forecast at the estimated arrival, 1:06 am MDT (07:06 UTC)

Wind from the west at 7 knots, visibility 2 miles, light snow, mist, overcast at 800 feet IFR

At times between Mon 12:00 am MDT (06:00 UTC) and 3:00 am MDT (09:00 UTC): visibility 6 miles, light snow, mist, overcast at 800 feet IFR

The whole forecast for BZN

From Sun 6:00 pm MDT (00:00 UTC): wind light and variable, visibility ½ mile, snow, fog, overcast at 300 feet
At times between Sun 9:00 pm MDT (03:00 UTC) and 12:00 am MDT (06:00 UTC): visibility 2 miles, light snow, mist, scattered clouds at 300 feet, overcast at 1,200 feet
From Mon 12:00 am MDT (06:00 UTC): wind from the west at 7 knots, visibility 2 miles, light snow, mist, overcast at 800 feet
At times between Mon 12:00 am MDT (06:00 UTC) and 3:00 am MDT (09:00 UTC): visibility 6 miles, light snow, mist, overcast at 800 feet
From Mon 3:00 am MDT (09:00 UTC): wind light and variable, visibility more than 6 miles, overcast at 800 feet
From Mon 12:00 pm MDT (18:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 800 feet, overcast at 2,000 feet
From Mon 5:00 pm MDT (23:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 1,500 feet, a broken layer at 11,000 feet

The forecast for SFO, the departure

From Sun 8:00 pm PDT (03:00 UTC): wind from the 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 22 nm from the route, at the departure end · drones kept away from a public gathering · until 12 October · ZOA
6/6740 SACRAMENTO, CA, Thursday, October 8, 2026 through Sunday, October 11, 2026 Local on the route, 69 nm along the route · air shows/sports · ended 11 October · ZOA
6/3475 BEALE AFB, CA, Sunday, March 8, 2026 through Sunday, November 1, 2026 Local 19 nm from the route, 99 nm along the route · security · until 1 November · ZOA

Daylight

Sunset at SFO 6:36 pm PDT (01:36 UTC), at BZN 6:44 pm MDT (00:44 UTC) (civil twilight ends 7:14 pm MDT (01:14 UTC)). At 120 knots the arrival at BZN is before sunrise there (7:36 am MDT (13:36 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 Pacific Northwest · loop National Weather Service

Radar now, the northern Rockies · 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, Bozeman Yellowstone International.