Bozeman Yellowstone International to Frederick Douglass/Greater Rochester International BZN → ROC
1,433 nautical miles (1,649 statute miles) east on a straight line, true course 084°, about 071° magnetic at the departure end (variation 13E). At 120 knots that is 8 h at the quickest height in today's winds (39,000 ft, a 59-knot tailwind), arriving about 10:13 am EDT (14:13 UTC). Right now BZN is low IFR, wind from the west (270°) at 5 knots; ROC 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 647 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the first 109 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 100 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 119 to 229 nm out.
- AIRMET TANGO 1W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Near the route, 219 nm along the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Near the route, 239 nm along the route.
- AIRMET TANGO 3W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Over the route from 856 to 965 nm out.
- AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 1125 to 1224 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
- 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 10 forecast points nearest it (BIL, MLS, DIK, ABR, AXN, MSP, LSE, GRB, TVC, BUF). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 3,500 ft | 250° at 15 kt | −13 kt | 133 kt | 10 h 46 min | 12:59 pm EDT (16:59 UTC) | |
| 5,500 ft | 240° at 8 kt | −7 kt | 4 °C | 127 kt | 11 h 17 min | 1:30 pm EDT (17:30 UTC) |
| 7,500 ft | 240° at 11 kt | −10 kt | 10 °C | 130 kt | 11 h 01 min | 1:14 pm EDT (17:14 UTC) |
| 9,500 ft | 240° at 15 kt | −13 kt | 7 °C | 133 kt | 10 h 46 min | 12:59 pm EDT (16:59 UTC) |
| 11,500 ft | 230° at 22 kt | −18 kt | 4 °C | 138 kt | 10 h 23 min | 12:36 pm EDT (16:36 UTC) |
| 13,500 ft | 240° at 24 kt | −22 kt | 0 °C | 142 kt | 10 h 05 min | 12:18 pm EDT (16:18 UTC) |
| 15,500 ft | 250° at 26 kt | −25 kt | -5 °C | 145 kt | 9 h 53 min | 12:06 pm EDT (16:06 UTC) |
| 17,500 ft | 250° at 28 kt | −28 kt | -9 °C | 148 kt | 9 h 41 min | 11:54 am EDT (15:54 UTC) |
| 18,000 ft FL180 | 250° at 29 kt | −28 kt | -10 °C | 148 kt | 9 h 41 min | 11:54 am EDT (15:54 UTC) |
| 24,000 ft FL240 | 250° at 31 kt | −31 kt | -21 °C | 151 kt | 9 h 29 min | 11:42 am EDT (15:42 UTC) |
| 30,000 ft FL300 | 260° at 32 kt | −34 kt | -37 °C | 154 kt | 9 h 18 min | 11:31 am EDT (15:31 UTC) |
| 34,000 ft FL340 | 260° at 43 kt | −45 kt | -44 °C | 165 kt | 8 h 41 min | 10:54 am EDT (14:54 UTC) |
| 39,000 ft FL390 | 270° at 57 kt | −59 kt | -50 °C | 179 kt | 8 h | 10:13 am EDT (14:13 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BIL | used from 0 nm out; 84 nm from the line | 080/13 | 180/9 -2° | 210/38 0° | 220/51 -11° | 210/46 -22° | 210/58 -35° | 230/73 -39° | 230/72 -45° | |
| MLS | used from 149 nm out; 53 nm from the line | 150/23 2° | 190/29 4° | 210/44 2° | 220/32 -10° | 210/36 -21° | 200/48 -37° | 230/63 -40° | 240/71 -47° | |
| DIK | used from 299 nm out; 51 nm from the line | 150/24 7° | 200/38 6° | 220/53 0° | 230/51 -9° | 230/49 -21° | 240/37 -37° | 240/47 -44° | 250/65 -48° | |
| ABR | used from 448 nm out; 68 nm from the line | 070/14 | 250/10 17° | 270/16 11° | 260/28 5° | 260/36 -10° | 260/41 -22° | 270/33 -37° | 260/42 -42° | 260/50 -48° |
| AXN | used from 597 nm out; 36 nm from the line | 100/14 | 250/21 14° | 240/24 12° | 240/31 5° | 260/36 -10° | 260/40 -21° | 250/42 -36° | 260/48 -45° | 260/53 -50° |
| MSP | used from 697 nm out; 56 nm from the line | 230/26 | 240/30 17° | 240/24 12° | 250/22 5° | 250/35 -10° | 260/36 -21° | 250/41 -36° | 250/49 -45° | 260/58 -52° |
| LSE | used from 846 nm out; 95 nm from the line | 230/40 | 240/24 17° | 240/13 10° | 250/13 6° | 280/22 -9° | 250/28 -21° | 250/41 -34° | 260/42 -44° | 270/62 -53° |
| GRB | used from 896 nm out; 63 nm from the line | 250/36 | 270/23 16° | 270/14 9° | 240/18 4° | 280/26 -9° | 280/29 -20° | 290/42 -36° | 290/51 -45° | 290/72 -55° |
| TVC | used from 1045 nm out; 9 nm from the line | 260/31 | 280/22 15° | 290/18 10° | 270/13 2° | 290/25 -10° | 300/35 -21° | 310/52 -37° | 320/59 -47° | 300/84 -54° |
| BUF | used from 1244 nm out; 126 nm from the line | 320/10 | 010/16 10° | 360/10 6° | 340/13 2° | 330/22 -11° | 300/25 -23° | 320/31 -38° | 300/29 -44° | 280/36 -50° |
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) |
| BIL Billings, MT | 109 nm out, 7 nm south of the line, tower | marginal VFR Sky: overcast at 1,200 feet Weather: light rain, light snow, mist | from the north-northwest (340°) at 6 knots | 3 mi | 1,200 ft | 3,662 ft | 05:53 UTC |
| MLS Miles City, MT | 219 nm out, 24 nm north of the line | marginal VFR Sky: scattered clouds at 700 feet, a broken layer at 1,000 feet, overcast at 2,400 feet Weather: light rain | from the northeast (050°) at 10 knots | 10+ mi | 1,000 ft | 2,634 ft | 06:01 UTC |
| HEI Hettinger, ND | 358 nm out, 4 nm southwest of the line | IFR Sky: overcast at 500 feet | from the east (080°) at 18 knots, gusting to 25 | 7 mi | 500 ft | 2,705 ft | 05:53 UTC |
| ASY Ashley, ND | 498 nm out, 5 nm northwest of the line | no report just now | 2,034 ft | ||||
| AXN Alexandria, MN | 657 nm out, 5 nm north of the line | VFR | from the north-northeast (030°) at 7 knots | 10+ mi | none | 1,425 ft | 05:53 UTC |
| STC St Cloud, MN | 717 nm out, 9 nm south of the line, tower | VFR | from the north (360°) at 4 knots | 10+ mi | none | 1,030 ft | 05:53 UTC |
| AIG Antigo, WI | 926 nm out, 2 nm south of the line | VFR | from the south-southwest (210°) at 6 knots | 10+ mi | none | 1,523 ft | 05:55 UTC |
| TVC Traverse City, MI | 1075 nm out, 4 nm northeast of the line, tower | VFR | from the south-southwest (200°) at 9 knots | 10+ mi | none | 623 ft | 05:53 UTC |
| OSC Oscoda, MI | 1174 nm out, 8 nm north of the line | low IFR Sky: overcast at 400 feet | from the southwest (230°) at 9 knots | 10+ mi | 400 ft | 633 ft | 05:55 UTC |
| IAG Niagara Falls, NY | 1383 nm out, 18 nm southwest of the line, tower | VFR Weather: mist | from the west-northwest (290°) at 3 knots | 6 mi | none | 592 ft | 05:53 UTC |
| ROC Rochester, NY | destination | VFR Sky: a broken layer at 4,300 feet, a broken layer at 10,000 feet, overcast at 14,000 feet | calm | 10+ mi | 4,300 ft | 558 ft | 1:54 am EDT (05:54 UTC) |
The highest airport on this list sits at 4,473 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At ROC when you get there the forecast at the estimated arrival, 10:13 am EDT (14:13 UTC)
Wind from the west at 4 knots, visibility more than 6 miles, overcast at 700 feet IFR
The whole forecast for ROC
- From Mon 2:00 am EDT (06:00 UTC): wind light and variable, visibility 6 miles, mist, a broken layer at 2,000 feet
- From Mon 3:00 am EDT (07:00 UTC): wind calm, visibility 4 miles, mist, overcast at 1,200 feet
- From Mon 8:00 am EDT (12:00 UTC): wind from the west at 4 knots, visibility more than 6 miles, overcast at 700 feet
- From Mon 12:00 pm EDT (16:00 UTC): wind from the west at 6 knots, visibility more than 6 miles, a broken layer at 1,500 feet
- From Mon 3:00 pm EDT (19:00 UTC): wind from the west at 8 knots, visibility more than 6 miles, a broken layer at 3,500 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
- 6/6656 ANOKA, MN, Monday, October 5, 2026 through Monday, October 19, 2026 Local 25 nm from the route, 746 nm along the route · security · until 19 October · ZMP
Daylight
Sunset at BZN 6:42 pm MDT (00:42 UTC), at ROC 6:33 pm EDT (22:33 UTC) (civil twilight ends 7:01 pm EDT (23:01 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, Frederick Douglass/Greater Rochester International.