Plan a flight · Mon 8:13 am MDT (14:13 UTC)

Billings Logan International to Mineta San Jose International BIL → SJC

785 nautical miles (903 statute miles) southwest on a straight line, true course 234°, about 224° magnetic at the departure end (variation 10E). At 120 knots that is 6 h 29 min at the quickest height in today's winds (4,500 ft, a 1-knot tailwind), arriving about 1:42 pm PDT (20:42 UTC). Right now BIL is VFR, wind from the southwest (220°) at 4 knots; SJC is VFR, wind calm. 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 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the first 318 nm of the route.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the first 497 nm of the route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 477 nm of the route.
AIRMET ZULU 2C: moderate icing up to 18,000 ft. Near the route, at the departure end.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 308 nm of the route.
AIRMET SIERRA 2E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 675 to 675 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 BIL.

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

B739 at 27,000 ft, 22 nm northwest, 6:56 am MDT (12:56 UTC): moderate chop turbulence. 358 nm along the route, 22 nm northwest of the line.
as filed, and in English
```
TWF UA /OV TWF247042/TM 1256/FL270/TP B739/TB MOD CHOP/ZLC
```
Report
a routine report filed through TWF
Where
42 nm southwest (247°) of TWF
Time
12:56 UTC
Height
at 27,000 ft
Aircraft
B739
Turbulence
moderate chop/zlc
C25A at 5,000 ft, 3 nm west, 7:00 am MDT (13:00 UTC): light rime icing, 4 °C, remarks: lt rime in the descent. At the departure end, 3 nm west of the line.
as filed, and in English
```
BIL UA /OV 100006/TM 1300/FL050/TP C25A/TA 4/IC LT RIME/RM LT RIME IN THE DESCENT
```
Report
a routine report filed through BIL
Where
wind from 100° at 6 knots
Time
13:00 UTC
Height
at 5,000 ft
Aircraft
C25A
Temperature
4 °C
Icing
lt rime
Remarks
lt rime in the descent
BCS1 at 25,000 ft, 35 nm southeast, 6:22 am MDT (12:22 UTC): a routine report with nothing remarked on. 248 nm along the route, 35 nm southeast of the line.
as filed, and in English
```
PIH UA /OV PIH/TM 1222/FL250/TP BCS1/SK TOP 265/ZLC
```
Report
a routine report filed through PIH
Where
over PIH
Time
12:22 UTC
Height
at 25,000 ft
Aircraft
BCS1
Sky
top 26,500 ft; zlc
CRJ7 at 4,800 ft, 35 nm southeast, 6:10 am MDT (12:10 UTC): overcast above 4,800 ft, remarks: during the descent runway 21 pih. 248 nm along the route, 35 nm southeast of the line.
as filed, and in English
```
PIH UA /OV KPIH/TM 1210/FL048/TP CRJ7/SK OVC048-TOPUNKN/RM DURD RY21 PIH
```
Report
a routine report filed through PIH
Where
over KPIH
Time
12:10 UTC
Height
at 4,800 ft
Aircraft
CRJ7
Sky
overcast from 4,800 ft, tops unknown
Remarks
during the descent runway 21 pih
MU2 at 12,000 ft, 40 nm northwest, 8:07 am MDT (14:07 UTC): a routine report with nothing remarked on. 278 nm along the route, 40 nm northwest of the line.
as filed, and in English
```
SUN UA /OV SUN/TM 1407/FL120/TP MU2/SK BASE 055 TOP 118 /ZLC
```
Report
a routine report filed through SUN
Where
over SUN
Time
14:07 UTC
Height
at 12,000 ft
Aircraft
MU2
Sky
base 5,500 ft top 11,800 ft; zlc
B738 at 14,000 ft, 3 nm north, 6:38 am MDT (12:38 UTC): light icing, -2 °C. 626 nm along the route, 3 nm north of the line.
as filed, and in English
```
RNO UA /OV RNO130020/TM 1238/FL140/TP B738/TA M02/IC LGT RM
```
Report
a routine report filed through RNO
Where
20 nm southeast (130°) of RNO
Time
12:38 UTC
Height
at 14,000 ft
Aircraft
B738
Temperature
−2 °C
Icing
light remarks
B38M at 11,000 ft, 7 nm northwest, 6:30 am MDT (12:30 UTC): light rime icing, -1 °C, remarks: from 11,000 ft to 14,000 ft rno dept southeast bound entered by zoa fdcs. 626 nm along the route, 7 nm northwest of the line.
as filed, and in English
```
RNO UA /OV 3917N11935W/TM 1230/FL110/TP B38M/SK UNKN/TA M01/IC LGT RIME/RM 110-140 RNO DEPT SE BOUND ENTERED BY ZOA FDCS
```
Report
a routine report filed through RNO
Where
3917N11935W
Time
12:30 UTC
Height
at 11,000 ft
Aircraft
B38M
Sky
unknown
Temperature
−1 °C
Icing
light rime
Remarks
from 11,000 ft to 14,000 ft rno dept southeast bound entered by zoa fdcs
B737 at 15,000 ft, 50 nm southeast, 6:12 am MDT (12:12 UTC): light chop turbulence, remarks: continuous light turbulence occasional moderate chop entered by zoa fdcs. 655 nm along the route, 50 nm southeast of the line.
as filed, and in English
```
FAT UA /OV FMG150080/TM 1212/FL150/TP B737/TB LGT/RM CONS LGT TURB OCNL MOD CHOP ENTERED BY ZOA FDCS
```
Report
a routine report filed through FAT
Where
80 nm southeast (150°) of FMG
Time
12:12 UTC
Height
at 15,000 ft
Aircraft
B737
Turbulence
light
Remarks
continuous light turbulence occasional moderate chop entered by zoa fdcs

Winds aloft along the route, and the time en route the forecast for use 14:00–21:00 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 8 forecast points nearest it (BIL, 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	350° at 2 kt	−1 kt	1 °C	121 kt	6 h 29 min	1:42 pm PDT (20:42 UTC)
6,500 ft	330° at 2 kt	0	2 °C	120 kt	6 h 32 min	1:45 pm PDT (20:45 UTC)
8,500 ft	270° at 5 kt	+3 kt	-3 °C	117 kt	6 h 43 min	1:56 pm PDT (20:56 UTC)
10,500 ft	250° at 8 kt	+7 kt	-5 °C	113 kt	6 h 57 min	2:10 pm PDT (21:10 UTC)
12,500 ft	240° at 12 kt	+11 kt	-8 °C	109 kt	7 h 12 min	2:25 pm PDT (21:25 UTC)
14,500 ft	240° at 14 kt	+14 kt	-12 °C	106 kt	7 h 24 min	2:37 pm PDT (21:37 UTC)
16,500 ft	240° at 17 kt	+16 kt	-15 °C	104 kt	7 h 33 min	2:46 pm PDT (21:46 UTC)
18,000 ft FL180	230° at 18 kt	+17 kt	-17 °C	103 kt	7 h 37 min	2:50 pm PDT (21:50 UTC)
24,000 ft FL240	230° at 19 kt	+18 kt	-27 °C	102 kt	7 h 42 min	2:55 pm PDT (21:55 UTC)
30,000 ft FL300	240° at 31 kt	+30 kt	-34 °C	90 kt	8 h 43 min	3:56 pm PDT (22:56 UTC)
34,000 ft FL340	230° at 35 kt	+34 kt	-38 °C	86 kt	9 h 08 min	4:21 pm PDT (23:21 UTC)
39,000 ft FL390	220° at 37 kt	+36 kt	-42 °C	84 kt	9 h 21 min	4:34 pm PDT (23:34 UTC)

Based on data from the 12th at 12:00 UTC; valid on the 12th at 18:00 UTC for use 14:00 to 21:00 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
BIL	used from 0 nm out; 25 nm from the line		L/V	250/11 -1°	240/20 -2°	230/28 -15°	220/28 -28°	220/53 -34°	220/55 -39°	220/63 -44°
DLN	used from 99 nm out; 81 nm from the line			L/V -3°	170/16 -6°	180/21 -18°	190/27 -30°	210/63 -33°	210/62 -36°	210/51 -42°
PIH	used from 199 nm out; 40 nm from the line		L/V	180/8 -1°	190/21 -6°	210/56 -18°	190/64 -28°	210/68 -31°	210/60 -36°	210/54 -42°
BOI	used from 348 nm out; 102 nm from the line		360/9 1°	L/V -5°	180/10 -12°	200/58 -21°	180/62 -31°	200/41 -31°	210/34 -32°	200/29 -41°
BAM	used from 397 nm out; 60 nm from the line			270/8 -4°	260/21 -11°	190/44 -21°	200/54 -28°	210/38 -31°	220/38 -35°	210/35 -41°
RNO	used from 546 nm out; 56 nm from the line		L/V	280/12 -4°	260/15 -10°	340/47 -17°	340/75 -25°	330/47 -37°	280/20 -40°	240/24 -42°
SAC	used from 695 nm out; 35 nm from the line	L/V	320/8 4°	330/12 -3°	350/25 -6°	350/63 -12°	340/65 -24°	340/60 -40°	340/45 -45°	290/24 -45°
SFO	used from 745 nm out; 36 nm from the line	010/6	360/13 5°	360/17 -3°	350/39 -2°	350/56 -11°	350/57 -24°	350/59 -40°	340/50 -46°	320/30 -47°

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
BIL Billings, MT	departure	VFR Sky: scattered clouds at 2,100 feet, overcast at 3,700 feet	from the southwest (220°) at 4 knots	10+ mi	3,700 ft	3,662 ft	7:53 am MDT (13:53 UTC)
RED Red Lodge, MT	50 nm out, 13 nm southeast of the line	no report just now				5,762 ft
WYS West Yellowstone, MT	129 nm out, 11 nm northwest of the line	marginal VFR Sky: overcast at 1,100 feet	calm	10+ mi	1,100 ft	6,649 ft	13:50 UTC
IDA Idaho Falls, ID	199 nm out, 21 nm southeast of the line, tower	IFR Sky: overcast at 800 feet Weather: rain, mist	from the west-southwest (250°) at 6 knots	6 mi	800 ft	4,743 ft	13:53 UTC
BYI Burley, ID	298 nm out, 19 nm southeast of the line	marginal VFR Sky: overcast at 1,800 feet Weather: light rain	from the west (280°) at 3 knots	10+ mi	1,800 ft	4,153 ft	13:53 UTC
TWF Twin Falls, ID	328 nm out, 4 nm east of the line, tower	VFR Sky: a broken layer at 4,000 feet, overcast at 4,800 feet	from the southwest (220°) at 4 knots	10+ mi	4,000 ft	4,153 ft	13:53 UTC
BAM Battle Mountain, NV	477 nm out, 18 nm southeast of the line	VFR Sky: a broken layer at 9,500 feet, a broken layer at 12,000 feet	calm	10+ mi	9,500 ft	4,536 ft	13:55 UTC
RNO Reno, NV	626 nm out, 22 nm northwest of the line, tower	VFR Sky: a few clouds at 6,000 feet, scattered clouds at 8,500 feet	from the north (360°) at 5 knots	10+ mi	none	4,414 ft	13:55 UTC
TVL South Lake Tahoe, CA	655 nm out, 3 nm northwest of the line	VFR Sky: a few clouds at 3,400 feet, a broken layer at 4,400 feet, overcast at 6,000 feet	calm	10+ mi	4,400 ft	6,268 ft	13:53 UTC
SCK Stockton, CA	735 nm out, 4 nm southwest of the line, tower	VFR	calm	10+ mi	none	32 ft	13:55 UTC
SJC San Jose, CA	destination	VFR Sky: a few clouds at 4,000 feet, a few clouds at 7,000 feet	calm	10+ mi	none	62 ft	6:53 am PDT (13:53 UTC)

The highest airport on this list sits at 6,649 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, 1:42 pm PDT (20:42 UTC)

Wind from the northwest at 8 knots, visibility more than 6 miles, clear skies VFR

The whole forecast for SJC

From Mon 5:00 am PDT (12:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 8,000 feet, a few clouds at 10,000 feet
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 BIL, the departure

From Mon 6:00 am MDT (12:00 UTC): wind from the north-northwest at 8 knots, visibility more than 6 miles, light rain snow, a broken layer at 1,200 feet, overcast at 2,200 feet
From Mon 1:00 pm MDT (19:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 1,500 feet, overcast at 2,500 feet
From Mon 6:00 pm MDT (00:00 UTC): wind from the east at 9 knots, visibility 6 miles, light drizzle, mist, a few clouds at 300 feet, overcast at 1,800 feet
From Mon 10:00 pm MDT (04:00 UTC): wind from the east at 9 knots, visibility 4 miles, light drizzle, mist, scattered clouds at 300 feet, overcast at 1,200 feet
From Tue 3:00 am MDT (09:00 UTC): wind light and variable, visibility 3 miles, light rain, mist, scattered clouds at 300 feet, a broken layer at 1,200 feet and more above

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

No temporary flight restriction on or near this route right now.

Daylight

Sunset at BIL 6:32 pm MDT (00:32 UTC), at SJC 6:33 pm PDT (01:33 UTC) (civil twilight ends 6:59 pm PDT (01:59 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: Billings Logan International, Mineta San Jose International.