Plan a flight · Mon 12:03 am MDT (06:03 UTC)

Bozeman Yellowstone International to Mineta San Jose International BZN → SJC

699 nautical miles (804 statute miles) southwest on a straight line, true course 227°, about 214° magnetic at the departure end (variation 13E). At 120 knots that is 5 h 41 min at the quickest height in today's winds (4,500 ft, a 3-knot tailwind), arriving about 4:44 am PDT (11:44 UTC), after sunset at the destination. Right now BZN is low IFR, wind from the west (270°) at 5 knots; SJC is VFR, wind from the south (180°) at 5 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

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 first 180 nm of the route.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the first 60 nm of the route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 309 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 30 to 359 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 70 to 279 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 180 nm of 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 BZN.

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

B737 , 0 nm northwest, 11:31 pm MDT (05:31 UTC): remarks: saw the light at 500FT braking good no icing. At the departure end, 0 nm northwest of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 0531/FLBURD/TP B737/RM SAW THE LIGHT AT 500FT. BRAKING GOOD. NEG ICING
```
Report
a routine report filed through BZN
Where
over BZN
Time
05:31 UTC
Height
at BURD
Aircraft
B737
Remarks
saw the light at 500FT braking good no icing
GLF5 descending, 0 nm northwest, 9:46 pm MDT (03:46 UTC): remarks: broke out 100-150FT above ground. At the departure end, 0 nm northwest of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 0346/FLDURD/TP GLF5/RM BROKE OUT 100-150FT AGL
```
Report
a routine report filed through BZN
Where
over BZN
Time
03:46 UTC
Height
during the descent
Aircraft
GLF5
Remarks
broke out 100-150FT above ground
E175 at 6,300 ft, 6 nm southeast, 10:20 pm MDT (04:20 UTC): overcast above 6,300 ft, remarks: during the descent runway 31. 190 nm along the route, 6 nm southeast of the line.
as filed, and in English
```
SUN UA /OV KSUN/TM 0420/FL063/TP E175/SK OVC063-TOPUNKN/RM DURD RY31
```
Report
a routine report filed through SUN
Where
over KSUN
Time
04:20 UTC
Height
at 6,300 ft
Aircraft
E175
Sky
overcast from 6,300 ft, tops unknown
Remarks
during the descent runway 31
E175 at 5,900 ft, 6 nm southeast, 9:29 pm MDT (03:29 UTC): a broken layer above 5,900 ft, remarks: during the descent runway 31. 190 nm along the route, 6 nm southeast of the line.
as filed, and in English
```
SUN UA /OV KSUN/TM 0329/FL059/TP E175/SK BKN059-TOPUNKN/RM DURD RY31
```
Report
a routine report filed through SUN
Where
over KSUN
Time
03:29 UTC
Height
at 5,900 ft
Aircraft
E175
Sky
a broken layer from 5,900 ft, tops unknown
Remarks
during the descent runway 31

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 7 forecast points nearest it (DLN, PIH, BOI, BAM, RNO, SAC, SFO). 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	020° at 4 kt	−3 kt	2 °C	123 kt	5 h 41 min	4:44 am PDT (11:44 UTC)
6,500 ft	360° at 4 kt	−3 kt	2 °C	123 kt	5 h 41 min	4:44 am PDT (11:44 UTC)
8,500 ft	340° at 4 kt	−2 kt	-2 °C	122 kt	5 h 44 min	4:47 am PDT (11:47 UTC)
10,500 ft	260° at 8 kt	+6 kt	-5 °C	114 kt	6 h 08 min	5:11 am PDT (12:11 UTC)
12,500 ft	240° at 16 kt	+15 kt	-8 °C	105 kt	6 h 39 min	5:42 am PDT (12:42 UTC)
14,500 ft	220° at 21 kt	+21 kt	-11 °C	99 kt	7 h 04 min	6:07 am PDT (13:07 UTC)
16,500 ft	220° at 26 kt	+26 kt	-14 °C	94 kt	7 h 26 min	6:29 am PDT (13:29 UTC)
18,000 ft FL180	210° at 30 kt	+30 kt	-17 °C	90 kt	7 h 46 min	6:49 am PDT (13:49 UTC)
24,000 ft FL240	210° at 40 kt	+38 kt	-26 °C	82 kt	8 h 31 min	7:34 am PDT (14:34 UTC)
30,000 ft FL300	220° at 47 kt	+47 kt	-31 °C	73 kt	9 h 35 min	8:38 am PDT (15:38 UTC)
34,000 ft FL340	220° at 55 kt	+54 kt	-34 °C	66 kt	10 h 35 min	9:38 am PDT (16:38 UTC)
39,000 ft FL390	220° at 50 kt	+50 kt	-42 °C	70 kt	9 h 59 min	9:02 am PDT (16:02 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
DLN	used from 0 nm out; 43 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°
PIH	used from 150 nm out; 84 nm from the line		L/V	240/13 1°	240/15 -3°	210/42 -15°	200/70 -25°	220/74 -29°	220/71 -36°	220/62 -43°
BOI	used from 200 nm out; 61 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°
BAM	used from 299 nm out; 85 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°
RNO	used from 449 nm out; 62 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°
SAC	used from 599 nm out; 30 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°
SFO	used from 649 nm out; 38 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°

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
BZN Bozeman, MT	departure	low IFR Sky: overcast at 200 feet Weather: light snow, mist	from the west (270°) at 5 knots	2.5 mi	200 ft	4,473 ft	11:56 pm MDT (05:56 UTC)
EKS Ennis, MT	40 nm out, 9 nm east of the line	IFR Sky: a few clouds at 300 feet, a broken layer at 800 feet, overcast at 1,100 feet Weather: light snow, mist	from the north (360°) at 6 knots	2 mi	800 ft	5,432 ft	05:55 UTC
SUN Hailey, ID	190 nm out, 6 nm southeast of the line, tower	IFR Sky: a broken layer at 600 feet, overcast at 1,100 feet	from the southeast (140°) at 5 knots	10+ mi	600 ft	5,319 ft	05:55 UTC
GNG Gooding, ID	230 nm out, 17 nm southeast of the line	VFR Sky: a broken layer at 3,800 feet, overcast at 4,800 feet	from the west-southwest (250°) at 5 knots	10+ mi	3,800 ft	3,732 ft	05:55 UTC
WMC Winnemucca, NV	409 nm out, 4 nm south of the line	VFR Sky: overcast at 11,000 feet	from the west (270°) at 4 knots	10+ mi	11,000 ft	4,307 ft	05:56 UTC
LOL Lovelock, NV	469 nm out, 12 nm southeast of the line	VFR Sky: a broken layer at 10,000 feet	from the north-northeast (020°) at 7 knots	10+ mi	10,000 ft	3,907 ft	05:53 UTC
RNO Reno, NV	539 nm out, 8 nm north of the line, tower	VFR Sky: a few clouds at 7,500 feet	from the north (350°) at 9 knots	10+ mi	none	4,414 ft	05:55 UTC
TRK Truckee, CA	559 nm out, 14 nm northwest of the line, tower	VFR	from the southwest (220°) at 10 knots, gusting to 14	10+ mi	none	5,904 ft	05:55 UTC
SCK Stockton, CA	649 nm out, 6 nm south of the line, tower	VFR	from the northwest (310°) at 5 knots	10+ mi	none	32 ft	05:55 UTC
SJC San Jose, CA	destination	VFR Sky: a few clouds at 3,000 feet, a few clouds at 8,000 feet	from the south (180°) at 5 knots	10+ mi	none	62 ft	10:53 pm PDT (05:53 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 SJC when you get there the forecast at the estimated arrival, 4:44 am PDT (11:44 UTC)

Wind from the southeast at 4 knots, visibility more than 6 miles, clear skies VFR

The whole forecast for SJC

From Sun 11:00 pm PDT (06:00 UTC): wind from the southeast at 4 knots, visibility more than 6 miles, clear skies
From Mon 1:00 pm PDT (20:00 UTC): wind from the northwest at 8 knots, visibility more than 6 miles, clear skies

The forecast for BZN, the departure

From Mon 12:00 am MDT (06:00 UTC): wind light and variable, visibility 2 miles, light snow, a broken layer at 200 feet, overcast at 1,000 feet
From Mon 3:00 am MDT (09:00 UTC): wind light and variable, visibility 6 miles, mist, overcast at 800 feet
From Mon 10:00 am MDT (16:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 800 feet, overcast at 1,000 feet
From Mon 2:00 pm MDT (20:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 800 feet, a broken layer at 1,500 feet
From Mon 6:00 pm MDT (00:00 UTC): wind light and variable, visibility 6 miles, mist, scattered clouds at 800 feet, a broken layer at 2,000 feet

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 2 nm from the route, at the destination end · drones kept away from a public gathering · until 12 October · ZOA

Daylight

Sunset at BZN 6:42 pm MDT (00:42 UTC), at SJC 6:35 pm PDT (01:35 UTC) (civil twilight ends 7:01 pm PDT (02:01 UTC)). At 120 knots the arrival at SJC is before sunrise there (7:12 am PDT (14:12 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 northern Rockies · loop National Weather Service

Radar now, the Pacific Northwest · loop National Weather Service

Radar now, the Pacific Southwest · 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: Bozeman Yellowstone International, Mineta San Jose International.