Bozeman Yellowstone International to Harry Reid International BZN → LAS
610 nautical miles (702 statute miles) south on a straight line, true course 199°, about 186° magnetic at the departure end (variation 13E). At 120 knots that is 5 h 27 min at the quickest height in today's winds (4,500 ft, a 8-knot headwind), arriving about 5:14 am PDT (12:14 UTC), after sunset at the destination. Right now BZN is low IFR, wind from the southwest (230°) at 5 knots; LAS is VFR, wind from the south (190°) at 10 knots, gusting to 18. 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: 1,193 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 W15W: thunderstorms (a convective SIGMET) up to 28,000 ft, moving from the southwest at 20 knots, until 1:55 am MDT (07:55 UTC). Near the route, 310 nm along the route.
as issued
WSUS33 KKCI 120555 MKCW WST 120555 CONVECTIVE SIGMET 15W VALID UNTIL 0755Z UT NV FROM 60WNW BVL-10NE BVL-80E OAL-40SE OAL-20W OAL-60WNW BVL AREA TS MOV FROM 24020KT. TOPS TO FL280.
- 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 100 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the first 40 nm of the route.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Near the route, at the departure end.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 560 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 550 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 290 nm of the route.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 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 BZN.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- 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
- B38M at 14,000 ft, 34 nm east, 11:47 pm MDT (05:47 UTC): light rime icing, 6 °C. At the destination end, 34 nm east of the line.
as filed, and in English
LAS UA /OV LAS059040/TM 0547/FL140/TP B38M/TA 06/IC LGT RIME
- Report
- a routine report filed through LAS
- Where
- 40 nm northeast (059°) of LAS
- Time
- 05:47 UTC
- Height
- at 14,000 ft
- Aircraft
- B38M
- Temperature
- 6 °C
- Icing
- light rime
- B737 at 19,000 ft, 9 nm southeast, 11:45 pm MDT (05:45 UTC): light turbulence. At the destination end, 9 nm southeast of the line.
as filed, and in English
LAS UA /OV LAS050012/TM 0545/FL190/TP B737/TB LGT
- Report
- a routine report filed through LAS
- Where
- 12 nm northeast (050°) of LAS
- Time
- 05:45 UTC
- Height
- at 19,000 ft
- Aircraft
- B737
- Turbulence
- light
- B737 at 14,500 ft, 12 nm south, 11:30 pm MDT (05:30 UTC): light turbulence. At the destination end, 12 nm south of the line.
as filed, and in English
LAS UA /OV LAS155012/TM 0530/FL145/TP B737/TB LGT
- Report
- a routine report filed through LAS
- Where
- 12 nm southeast (155°) of LAS
- Time
- 05:30 UTC
- Height
- at 14,500 ft
- Aircraft
- B737
- Turbulence
- light
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 5 forecast points nearest it (DLN, PIH, SLC, ELY, LAS). 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 | 210° at 8 kt | +8 kt | 10 °C | 112 kt | 5 h 27 min | 5:14 am PDT (12:14 UTC) |
| 6,500 ft | 210° at 9 kt | +8 kt | 9 °C | 112 kt | 5 h 27 min | 5:14 am PDT (12:14 UTC) |
| 8,500 ft | 210° at 16 kt | +16 kt | 1 °C | 104 kt | 5 h 52 min | 5:39 am PDT (12:39 UTC) |
| 10,500 ft | 210° at 18 kt | +18 kt | -1 °C | 102 kt | 5 h 59 min | 5:46 am PDT (12:46 UTC) |
| 12,500 ft | 220° at 22 kt | +21 kt | -4 °C | 99 kt | 6 h 10 min | 5:57 am PDT (12:57 UTC) |
| 14,500 ft | 210° at 30 kt | +28 kt | -7 °C | 92 kt | 6 h 38 min | 6:25 am PDT (13:25 UTC) |
| 16,500 ft | 210° at 37 kt | +36 kt | -12 °C | 84 kt | 7 h 16 min | 7:03 am PDT (14:03 UTC) |
| 18,000 ft FL180 | 210° at 42 kt | +41 kt | -14 °C | 79 kt | 7 h 43 min | 7:30 am PDT (14:30 UTC) |
| 24,000 ft FL240 | 210° at 60 kt | +59 kt | -24 °C | 61 kt | 10 h | 9:47 am PDT (16:47 UTC) |
| 30,000 ft FL300 | 210° at 64 kt | +61 kt | -30 °C | 59 kt | 10 h 20 min | 10:07 am PDT (17:07 UTC) |
| 34,000 ft FL340 | 220° at 68 kt | +65 kt | -35 °C | 55 kt | 11 h 05 min | 10:52 am PDT (17:52 UTC) |
| 39,000 ft FL390 | 220° at 63 kt | +59 kt | -43 °C | 61 kt | 10 h | 9:47 am PDT (16:47 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; 52 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 100 nm out; 58 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° | |
| SLC | used from 250 nm out; 63 nm from the line | 200/5 | 230/8 2° | 220/20 -2° | 210/40 -12° | 190/53 -25° | 210/62 -30° | 220/69 -34° | 220/64 -43° | |
| ELY | used from 350 nm out; 60 nm from the line | 200/39 3° | 210/27 -2° | 210/45 -15° | 220/56 -24° | 210/60 -28° | 210/63 -34° | 220/61 -43° | ||
| LAS | used from 500 nm out; 85 nm from the line | 210/21 10° | 200/18 5° | 200/23 -2° | 210/49 -14° | 210/63 -21° | 220/58 -30° | 220/61 -35° | 210/56 -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 300 feet Weather: light snow, mist | from the southwest (230°) at 5 knots | 3 mi | 300 ft | 4,473 ft | 12:24 am MDT (06:24 UTC) |
| EKS Ennis, MT | 40 nm out, 11 nm northwest of the line | low IFR Sky: a broken layer at 300 feet, a broken layer at 800 feet, overcast at 1,200 feet Weather: light snow, mist | calm | 2 mi | 300 ft | 5,432 ft | 06:30 UTC |
| RXE Rexburg, ID | 120 nm out, 10 nm east of the line | marginal VFR Sky: a few clouds at 1,300 feet, a broken layer at 2,100 feet, overcast at 2,700 feet | from the south (170°) at 3 knots | 10+ mi | 2,100 ft | 4,862 ft | 05:53 UTC |
| PIH Pocatello, ID | 180 nm out, 6 nm west of the line, tower | marginal VFR Sky: a broken layer at 2,900 feet, overcast at 4,000 feet | from the south (180°) at 4 knots | 10+ mi | 2,900 ft | 4,451 ft | 06:03 UTC |
| MLD Malad City, ID | 220 nm out, 21 nm east of the line | no report just now | 4,503 ft | ||||
| LAS Las Vegas, NV | destination | VFR Sky: overcast at 10,000 feet | from the south (190°) at 10 knots, gusting to 18 | 10+ mi | 10,000 ft | 2,183 ft | 10:56 pm PDT (05:56 UTC) |
The highest airport on this list sits at 5,432 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At LAS when you get there the forecast at the estimated arrival, 5:14 am PDT (12:14 UTC)
Wind from the south at 7 knots, visibility more than 6 miles, a few clouds at 8,000 feet, a broken layer at 10,000 feet VFR
The whole forecast for LAS
- From Sun 11:00 pm PDT (06:00 UTC): wind from the south at 12 knots, gusting to 17, visibility more than 6 miles, a few clouds at 8,000 feet, a broken layer at 10,000 feet
- From Mon 1:00 am PDT (08:00 UTC): wind from the south at 7 knots, visibility more than 6 miles, a few clouds at 8,000 feet, a broken layer at 10,000 feet
- From Mon 8:00 am PDT (15:00 UTC): wind from the south at 8 knots, visibility more than 6 miles, showers nearby, scattered clouds at 7,000 feet, a broken layer at 10,000 feet
- From Mon 12:00 pm PDT (19:00 UTC): wind from the south-southwest at 15 knots, gusting to 25, visibility more than 6 miles, showers nearby, scattered clouds at 7,000 feet, a broken layer at 12,000 feet
- From Mon 9:00 pm PDT (04:00 UTC): wind from the southwest at 8 knots, visibility more than 6 miles, a few clouds at 8,000 feet, scattered clouds at 10,000 feet
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
- 6/8890 LAS VEGAS, NV, Tuesday, October 13, 2026 Local on the route, 580 nm along the route · a VIP movement · starts tomorrow · ZLA
- 6/8808 Las Vegas, NV, Tuesday, October 13, 2026 Local on the route, at the destination end · security · starts tomorrow · ZLA
Daylight
Sunset at BZN 6:42 pm MDT (00:42 UTC), at LAS 6:08 pm PDT (01:08 UTC) (civil twilight ends 6:34 pm PDT (01:34 UTC)). At 120 knots the arrival at LAS is before sunrise there (6:44 am PDT (13:44 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, Harry Reid International.