Bozeman Yellowstone International to Flagstaff Pulliam Airport BZN → FLG
639 nautical miles (735 statute miles) south on a straight line, true course 182°, about 169° magnetic at the departure end (variation 13E). At 120 knots that is 5 h 33 min at the quickest height in today's winds (7,500 ft, a 5-knot headwind), arriving about 4:41 am MST (11:41 UTC), after sunset at the destination. Right now BZN is low IFR, wind from the west (270°) at 5 knots; FLG is marginal VFR, wind from the southwest (220°) at 17 knots, gusting to 29. 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 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 whole route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 50 to 519 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 349 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the route from 310 to 539 nm out.
- AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft. Over the last 90 nm of the route.
- AIRMET SIERRA 2E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the last 50 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
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 5 forecast points nearest it (DLN, PIH, SLC, BCE, PRC). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 7,500 ft | 210° at 6 kt | +5 kt | -3 °C | 115 kt | 5 h 33 min | 4:41 am MST (11:41 UTC) |
| 9,500 ft | 230° at 10 kt | +7 kt | -1 °C | 113 kt | 5 h 39 min | 4:47 am MST (11:47 UTC) |
| 11,500 ft | 220° at 20 kt | +15 kt | -2 °C | 105 kt | 6 h 05 min | 5:13 am MST (12:13 UTC) |
| 13,500 ft | 220° at 26 kt | +21 kt | -5 °C | 99 kt | 6 h 27 min | 5:35 am MST (12:35 UTC) |
| 15,500 ft | 210° at 32 kt | +27 kt | -9 °C | 93 kt | 6 h 52 min | 6:00 am MST (13:00 UTC) |
| 17,500 ft | 210° at 39 kt | +34 kt | -13 °C | 86 kt | 7 h 26 min | 6:34 am MST (13:34 UTC) |
| 18,000 ft FL180 | 210° at 40 kt | +35 kt | -14 °C | 85 kt | 7 h 31 min | 6:39 am MST (13:39 UTC) |
| 24,000 ft FL240 | 210° at 58 kt | +53 kt | -24 °C | 67 kt | 9 h 32 min | 8:40 am MST (15:40 UTC) |
| 30,000 ft FL300 | 220° at 67 kt | +56 kt | -30 °C | 64 kt | 9 h 59 min | 9:07 am MST (16:07 UTC) |
| 34,000 ft FL340 | 220° at 71 kt | +57 kt | -35 °C | 63 kt | 10 h 09 min | 9:17 am MST (16:17 UTC) |
| 39,000 ft FL390 | 220° at 62 kt | +49 kt | -43 °C | 71 kt | 9 h | 8:08 am MST (15:08 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; 59 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; 75 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; 36 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° | |
| BCE | used from 399 nm out; 67 nm from the line | 220/27 -1° | 210/40 -13° | 220/54 -21° | 220/64 -30° | 220/64 -34° | 220/52 -44° | |||
| PRC | used from 599 nm out; 62 nm from the line | 210/25 5° | 200/30 1° | 220/55 -10° | 220/61 -21° | 220/84 -28° | 230/90 -34° | 230/73 -45° |
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 | 30 nm out, 20 nm west 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 |
| WYS West Yellowstone, MT | 70 nm out, 6 nm northeast of the line | low IFR Sky: a broken layer at 400 feet, overcast at 900 feet Weather: mist, unknown precipitation | from the west (260°) at 3 knots | 2 mi | 400 ft | 6,649 ft | 05:55 UTC |
| JAC Jackson, WY | 130 nm out, 23 nm east of the line, tower | VFR Sky: overcast at 5,500 feet | from the southwest (230°) at 5 knots | 10+ mi | 5,500 ft | 6,451 ft | 05:56 UTC |
| LGU Logan, UT | 240 nm out, 22 nm west of the line | VFR Sky: overcast at 6,000 feet | from the north (350°) at 3 knots | 10+ mi | 6,000 ft | 4,456 ft | 05:51 UTC |
| EVW Evanston, WY | 270 nm out, 16 nm east of the line | VFR Sky: a few clouds at 6,000 feet, a broken layer at 8,000 feet, overcast at 9,000 feet | from the southwest (220°) at 11 knots | 10+ mi | 8,000 ft | 7,142 ft | 05:53 UTC |
| PVU Provo, UT | 330 nm out, 14 nm west of the line, tower | VFR Sky: a broken layer at 4,900 feet, overcast at 6,000 feet | calm | 10+ mi | 4,900 ft | 4,496 ft | 05:56 UTC |
| PGA Page, AZ | 529 nm out, 7 nm east of the line | VFR | from the southwest (230°) at 3 knots | 10+ mi | none | 4,316 ft | 05:53 UTC |
| GCN Grand Canyon, AZ | 589 nm out, 25 nm west of the line, tower | IFR Sky: a broken layer at 600 feet, overcast at 3,500 feet | from the south-southwest (200°) at 9 knots | 10+ mi | 600 ft | 6,608 ft | 05:54 UTC |
| FLG Flagstaff, AZ | destination | marginal VFR Sky: scattered clouds at 1,000 feet, a broken layer at 1,500 feet, overcast at 1,900 feet | from the southwest (220°) at 17 knots, gusting to 29 | 10+ mi | 1,500 ft | 7,014 ft | 10:57 pm MST (05:57 UTC) |
The highest airport on this list sits at 7,142 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At FLG when you get there the forecast at the estimated arrival, 4:41 am MST (11:41 UTC)
Wind from the southwest at 20 knots, gusting to 30, visibility more than 6 miles, light rain showers, overcast at 2,500 feet marginal VFR
The whole forecast for FLG
- From Sun 11:00 pm MST (06:00 UTC): wind from the southwest at 20 knots, gusting to 30, visibility more than 6 miles, light rain showers, overcast at 2,500 feet
- At times between Sun 11:00 pm MST (06:00 UTC) and 3:00 am MST (10:00 UTC): a broken layer at 800 feet
- From Mon 5:00 am MST (12:00 UTC): wind from the south-southwest at 15 knots, gusting to 25, visibility more than 6 miles, showers nearby, overcast at 2,000 feet
- From Mon 11:00 am MST (18:00 UTC): wind from the southwest at 20 knots, gusting to 30, visibility 6 miles, light rain showers, overcast at 1,500 feet
- 30% chance between Mon 11:00 am MST (18:00 UTC) and 4:00 pm MST (23:00 UTC): visibility 5 miles, light thunderstorms with rain, overcast at 1,000 feet (thunderheads)
- From Mon 7:00 pm MST (02:00 UTC): wind from the southwest at 12 knots, gusting to 24, visibility more than 6 miles, light rain showers, overcast at 5,000 feet
- From Mon 10:00 pm MST (05:00 UTC): wind from the southwest at 10 knots, visibility more than 6 miles, showers nearby, overcast 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
No temporary flight restriction on or near this route right now.
Daylight
Sunset at BZN 6:42 pm MDT (00:42 UTC), at FLG 5:55 pm MST (00:55 UTC) (civil twilight ends 6:21 pm MST (01:21 UTC)). At 120 knots the arrival at FLG is before sunrise there (6:30 am MST (13:30 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, Flagstaff Pulliam Airport.