Bozeman Yellowstone International to San Luis Obispo County Regional BZN → SBP
766 nautical miles (881 statute miles) southwest on a straight line, true course 218°, about 205° magnetic at the departure end (variation 13E). At 120 knots that is 6 h 29 min at the quickest height in today's winds (4,500 ft, a 2-knot headwind), arriving about 6:35 am PDT (13:35 UTC), after sunset at the destination. Right now BZN is marginal VFR, wind from the southwest (230°) at 4 knots; SBP 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: 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 169 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the first 50 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 438 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 60 to 487 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 60 to 318 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 BZN.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- PC12 at 17,000 ft, 29 nm southeast, 10:52 pm MDT (04:52 UTC): moderate turbulence, moderate rime icing, -15 °C, remarks: entered by zoa fdcs. 547 nm along the route, 29 nm southeast of the line.
as filed, and in English
TPH UA /OV OAL/TM 0452/FL 170/TP PC12/TA M15/TB MOD/IC MOD RIME/RM ENTERED BY ZOA FDCS AWC-WEB
- Report
- a routine report filed through TPH
- Where
- over OAL
- Time
- 04:52 UTC
- Height
- at 17,000 ft
- Aircraft
- PC12
- Temperature
- −15 °C
- Turbulence
- moderate
- Icing
- moderate rime
- Remarks
- entered by zoa fdcs
- E73L descending, 0 nm northwest, 12:20 am MDT (06:20 UTC): remarks: breaking action good broke out about 600FT above ground. At the departure end, 0 nm northwest of the line.
as filed, and in English
BZN UA /OV BZN/TM 0620/FLDURD/TP E73L/RM BREAKING ACTION GOOD. BROKE OUT ABOUT 600FT AGL
- Report
- a routine report filed through BZN
- Where
- over BZN
- Time
- 06:20 UTC
- Height
- during the descent
- Aircraft
- E73L
- Remarks
- breaking action good broke out about 600FT above ground
- 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
- E175 at 6,300 ft, 27 nm northwest, 10:20 pm MDT (04:20 UTC): overcast above 6,300 ft, remarks: during the descent runway 31. 189 nm along the route, 27 nm northwest 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
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, BIH, FAT, SBA). 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 | 160° at 4 kt | +2 kt | 2 °C | 118 kt | 6 h 29 min | 6:35 am PDT (13:35 UTC) |
| 6,500 ft | 190° at 6 kt | +5 kt | 3 °C | 115 kt | 6 h 40 min | 6:46 am PDT (13:46 UTC) |
| 8,500 ft | 220° at 5 kt | +5 kt | -2 °C | 115 kt | 6 h 40 min | 6:46 am PDT (13:46 UTC) |
| 10,500 ft | 230° at 11 kt | +11 kt | -3 °C | 109 kt | 7 h 02 min | 7:08 am PDT (14:08 UTC) |
| 12,500 ft | 230° at 18 kt | +17 kt | -6 °C | 103 kt | 7 h 26 min | 7:32 am PDT (14:32 UTC) |
| 14,500 ft | 220° at 23 kt | +23 kt | -9 °C | 97 kt | 7 h 54 min | 8:00 am PDT (15:00 UTC) |
| 16,500 ft | 210° at 30 kt | +30 kt | -13 °C | 90 kt | 8 h 31 min | 8:37 am PDT (15:37 UTC) |
| 18,000 ft FL180 | 210° at 34 kt | +34 kt | -16 °C | 86 kt | 8 h 54 min | 9:00 am PDT (16:00 UTC) |
| 24,000 ft FL240 | 200° at 50 kt | +49 kt | -26 °C | 71 kt | 10 h 47 min | 10:53 am PDT (17:53 UTC) |
| 30,000 ft FL300 | 220° at 61 kt | +61 kt | -30 °C | 59 kt | 12 h 59 min | 1:05 pm PDT (20:05 UTC) |
| 34,000 ft FL340 | 220° at 62 kt | +62 kt | -35 °C | 58 kt | 13 h 12 min | 1:18 pm PDT (20:18 UTC) |
| 39,000 ft FL390 | 220° at 55 kt | +54 kt | -42 °C | 66 kt | 11 h 36 min | 11:42 am PDT (18:42 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; 46 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 149 nm out; 54 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 249 nm out; 105 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 298 nm out; 79 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° | ||
| BIH | used from 497 nm out; 81 nm from the line | L/V | 240/7 1° | 190/13 -3° | 200/26 -16° | 210/43 -26° | 220/54 -28° | 220/51 -35° | 220/47 -43° | |
| FAT | used from 646 nm out; 13 nm from the line | 130/16 | 160/20 5° | 190/28 -1° | 210/25 -5° | 220/27 -15° | 230/21 -26° | 220/42 -29° | 220/44 -35° | 220/44 -44° |
| SBA | used from 746 nm out; 67 nm from the line | L/V | 190/13 5° | 210/20 2° | 220/22 -3° | 260/19 -13° | 230/35 -22° | 220/43 -28° | 220/46 -36° | 220/45 -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 | marginal VFR Sky: a few clouds at 500 feet, a broken layer at 3,700 feet, overcast at 5,000 feet Weather: light snow, mist | from the southwest (230°) at 4 knots | 5 mi | 3,700 ft | 4,473 ft | 12:56 am MDT (06:56 UTC) |
| EKS Ennis, MT | 40 nm out, 4 nm northeast of the line | low IFR Sky: a broken layer at 300 feet, a broken layer at 2,200 feet, overcast at 3,500 feet Weather: light snow, mist | from the south-southeast (160°) at 4 knots | 4 mi | 300 ft | 5,432 ft | 06:55 UTC |
| AOC Arco, ID | 159 nm out, 4 nm southeast of the line | no report just now | 5,334 ft | ||||
| TWF Twin Falls, ID | 249 nm out, 4 nm northeast of the line, tower | VFR Sky: overcast at 3,600 feet Weather: light rain | from the south-southwest (200°) at 9 knots | 7 mi | 3,600 ft | 4,153 ft | 06:53 UTC |
| EKO Elko, NV | 358 nm out, 11 nm southeast of the line | VFR Sky: overcast at 4,100 feet Weather: light rain | calm | 10+ mi | 4,100 ft | 5,139 ft | 06:56 UTC |
| BAM Battle Mountain, NV | 398 nm out, 23 nm northwest of the line | VFR Sky: overcast at 9,000 feet | from the north-northwest (340°) at 9 knots | 10+ mi | 9,000 ft | 4,536 ft | 06:55 UTC |
| TMT Austin, NV | 467 nm out, 5 nm northeast of the line | VFR Sky: scattered clouds at 7,000 feet, a broken layer at 9,500 feet, a broken layer at 11,000 feet | from the northwest (320°) at 3 knots | 10+ mi | 9,500 ft | 5,735 ft | 06:55 UTC |
| MMH Mammoth Lakes, CA | 597 nm out, 2 nm west of the line | VFR Sky: scattered clouds at 7,000 feet | from the southeast (130°) at 6 knots | 10+ mi | none | 7,134 ft | 06:55 UTC |
| FAT Fresno, CA | 666 nm out, 11 nm northwest of the line, tower | VFR Sky: scattered clouds at 9,500 feet, a broken layer at 12,000 feet, a broken layer at 15,000 feet | from the southeast (140°) at 14 knots | 9 mi | 12,000 ft | 335 ft | 06:53 UTC |
| PRB Paso Robles, CA | 746 nm out, 13 nm northwest of the line | VFR Sky: overcast at 5,500 feet | from the south (190°) at 6 knots | 10+ mi | 5,500 ft | 838 ft | 06:53 UTC |
| SBP San Luis Obispo, CA | destination | VFR Sky: overcast at 6,000 feet | calm | 10+ mi | 6,000 ft | 212 ft | 11:56 pm PDT (06:56 UTC) |
The highest airport on this list sits at 7,134 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SBP when you get there the forecast at the estimated arrival, 6:35 am PDT (13:35 UTC)
Wind light and variable, visibility more than 6 miles, a broken layer at 3,500 feet VFR
The whole forecast for SBP
- From Sun 11:00 pm PDT (06:00 UTC): wind light and variable, visibility more than 6 miles, a broken layer at 3,500 feet
- From Mon 12:00 pm PDT (19:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, clear skies
- From Mon 2:00 pm PDT (21:00 UTC): wind from the west-southwest at 9 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
- 6/7094 45NM NE MERCED, CA, Sunday, October 4, 2026 through Tuesday, October 20, 2026 UTC 24 nm from the route, 627 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 20 October · ZOA
Daylight
Sunset at BZN 6:42 pm MDT (00:42 UTC), at SBP 6:30 pm PDT (01:30 UTC) (civil twilight ends 6:55 pm PDT (01:55 UTC)). At 120 knots the arrival at SBP is before sunrise there (7:06 am PDT (14:06 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
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, San Luis Obispo County Regional.