Bozeman Yellowstone International to Westchester County BZN → HPN
1,642 nautical miles (1,889 statute miles) east on a straight line, true course 086°, about 073° magnetic at the departure end (variation 13E). At 120 knots that is 9 h 07 min at the quickest height in today's winds (39,000 ft, a 60-knot tailwind), arriving about 6:20 am EDT (10:20 UTC), after sunset at the destination. Right now BZN is low IFR, wind calm; HPN is IFR, wind from the north-northeast (030°) at 8 knots, gusting to 15. 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: 6 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 428 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the first 328 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 129 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 90 to 90 nm out.
- 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 route from 607 to 627 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 1214 to 1234 nm out.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the route from 1383 to 1602 nm out.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 239 nm of the route.
- 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 last 229 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1423 to 1582 nm out.
- AIRMET TANGO 2W: 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 1443 to 1602 nm out.
- AIRMET ZULU 1C: moderate icing up to 24,000 ft. Over the route from 1472 to 1482 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
Not fetched just now.
Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 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 14 forecast points nearest it (BIL, MLS, DIK, PIR, ABR, AXN, MSP, LSE, GRB, TVC, CLE, BUF, AVP, JFK). 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 | 190° at 10 kt | +1 kt | 119 kt | 13 h 48 min | 11:01 am EDT (15:01 UTC) | |
| 5,500 ft | 200° at 7 kt | 0 | 7 °C | 120 kt | 13 h 41 min | 10:54 am EDT (14:54 UTC) |
| 7,500 ft | 220° at 8 kt | −5 kt | 11 °C | 125 kt | 13 h 08 min | 10:21 am EDT (14:21 UTC) |
| 9,500 ft | 240° at 11 kt | −9 kt | 7 °C | 129 kt | 12 h 44 min | 9:57 am EDT (13:57 UTC) |
| 11,500 ft | 230° at 16 kt | −12 kt | 4 °C | 132 kt | 12 h 26 min | 9:39 am EDT (13:39 UTC) |
| 13,500 ft | 240° at 19 kt | −15 kt | 0 °C | 135 kt | 12 h 10 min | 9:23 am EDT (13:23 UTC) |
| 15,500 ft | 240° at 22 kt | −19 kt | -5 °C | 139 kt | 11 h 49 min | 9:02 am EDT (13:02 UTC) |
| 17,500 ft | 250° at 26 kt | −23 kt | -9 °C | 143 kt | 11 h 29 min | 8:42 am EDT (12:42 UTC) |
| 18,000 ft FL180 | 250° at 27 kt | −24 kt | -10 °C | 144 kt | 11 h 24 min | 8:37 am EDT (12:37 UTC) |
| 24,000 ft FL240 | 250° at 33 kt | −30 kt | -21 °C | 150 kt | 10 h 57 min | 8:10 am EDT (12:10 UTC) |
| 30,000 ft FL300 | 250° at 39 kt | −35 kt | -36 °C | 155 kt | 10 h 36 min | 7:49 am EDT (11:49 UTC) |
| 34,000 ft FL340 | 250° at 50 kt | −44 kt | -44 °C | 164 kt | 10 h 01 min | 7:14 am EDT (11:14 UTC) |
| 39,000 ft FL390 | 260° at 64 kt | −60 kt | -51 °C | 180 kt | 9 h 07 min | 6:20 am EDT (10:20 UTC) |
Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 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 | 080/24 | 130/14 -1° | 180/33 0° | 210/43 -10° | 220/58 -21° | 200/55 -36° | 220/75 -44° | 240/83 -48° | |
| MLS | used from 149 nm out; 56 nm from the line | 120/22 5° | 170/18 4° | 200/33 1° | 230/49 -10° | 230/58 -21° | 220/54 -37° | 230/64 -44° | 250/74 -49° | |
| DIK | used from 298 nm out; 62 nm from the line | 110/15 6° | 200/17 5° | 230/31 1° | 240/47 -10° | 240/52 -20° | 230/52 -36° | 240/57 -45° | 250/67 -51° | |
| PIR | used from 398 nm out; 90 nm from the line | L/V 17° | 230/13 12° | 220/22 6° | 250/31 -9° | 250/34 -21° | 240/50 -35° | 230/61 -43° | 240/62 -51° | |
| ABR | used from 448 nm out; 63 nm from the line | 030/24 | 220/5 16° | 230/18 12° | 230/32 5° | 240/38 -10° | 250/37 -20° | 240/40 -35° | 240/56 -44° | 250/72 -52° |
| AXN | used from 597 nm out; 46 nm from the line | L/V | 220/23 17° | 230/24 12° | 240/25 5° | 260/32 -11° | 260/40 -21° | 270/50 -35° | 270/57 -45° | 270/81 -55° |
| MSP | used from 696 nm out; 39 nm from the line | 200/28 | 240/30 19° | 240/24 12° | 240/17 5° | 270/24 -10° | 270/33 -20° | 280/48 -35° | 290/55 -45° | 280/84 -54° |
| LSE | used from 846 nm out; 65 nm from the line | 220/33 | 250/29 17° | 250/15 9° | 260/12 6° | 280/21 -9° | 280/33 -20° | 300/43 -36° | 310/56 -45° | 300/79 -53° |
| GRB | used from 895 nm out; 55 nm from the line | 240/24 | 260/18 16° | 270/20 11° | 290/14 4° | 280/24 -9° | 300/34 -21° | 310/51 -38° | 310/54 -48° | 300/71 -51° |
| TVC | used from 1045 nm out; 43 nm from the line | 210/17 | 290/14 15° | 310/20 9° | 310/18 2° | 310/24 -11° | 320/35 -22° | 320/53 -39° | 310/45 -49° | 290/58 -51° |
| CLE | used from 1194 nm out; 127 nm from the line | 340/5 | 320/13 14° | 300/12 8° | 310/10 2° | 310/14 -10° | 340/14 -23° | 320/27 -35° | 260/28 -40° | 250/36 -48° |
| BUF | used from 1293 nm out; 78 nm from the line | 170/19 | L/V 10° | 040/9 6° | 220/8 2° | 230/15 -11° | 220/33 -22° | 220/47 -35° | 230/55 -41° | 230/56 -50° |
| AVP | used from 1492 nm out; 39 nm from the line | 110/36 | 190/34 13° | 230/11 8° | 230/16 4° | 230/26 -8° | 220/40 -19° | 230/73 -33° | 230/98 -41° | 230/87 -51° |
| JFK | used from 1592 nm out; 40 nm from the line | 140/43 | 170/35 13° | 230/18 9° | 250/25 5° | 240/40 -7° | 230/50 -17° | 230/75 -31° | 230/78 -41° | 230/88 -53° |
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 | calm | 1.25 mi | 300 ft | 4,473 ft | 7:06 pm MDT (01:06 UTC) |
| BIL Billings, MT | 109 nm out, 3 nm south of the line, tower | IFR Sky: a broken layer at 800 feet, overcast at 1,200 feet Weather: light rain | from the north (010°) at 15 knots | 10+ mi | 800 ft | 3,662 ft | 00:53 UTC |
| BWW Bowman, ND | 328 nm out, 19 nm north of the line | low IFR Sky: overcast at 400 feet Weather: mist | from the east-northeast (060°) at 15 knots, gusting to 20 | 3 mi | 400 ft | 2,965 ft | 23:35 UTC |
| LEM Lemmon, SD | 378 nm out, 6 nm north of the line | no report just now | 2,572 ft | ||||
| BBB Benson, MN | 647 nm out, 7 nm southeast of the line | VFR | from the northwest (320°) at 7 knots | 10+ mi | none | 1,039 ft | 01:05 UTC |
| ANE Minneapolis, MN | 756 nm out, 2 nm southwest of the line, tower | VFR | from the south-southeast (150°) at 4 knots | 10+ mi | none | 912 ft | 00:45 UTC |
| GRB Green Bay, WI | 975 nm out, 1 nm north of the line, tower | VFR | from the south (190°) at 6 knots | 10+ mi | none | 695 ft | 00:53 UTC |
| IKW Midland, MI | 1144 nm out, 7 nm south of the line | VFR | from the south (180°) at 3 knots | 10+ mi | none | 634 ft | 00:55 UTC |
| MBS Saginaw, MI | 1154 nm out, 12 nm south of the line, tower | VFR | from the south (180°) at 5 knots | 10+ mi | none | 668 ft | 00:53 UTC |
| BUF Buffalo, NY | 1393 nm out, 25 nm north of the line, tower | VFR Sky: a broken layer at 5,000 feet, a broken layer at 10,000 feet | from the east (090°) at 7 knots | 10+ mi | 5,000 ft | 726 ft | 00:54 UTC |
| ELM Elmira/Corning, NY | 1482 nm out, 9 nm northeast of the line, tower | VFR Sky: a few clouds at 900 feet, a few clouds at 2,000 feet, a broken layer at 3,300 feet, overcast at 4,500 feet Weather: light rain | from the east-northeast (060°) at 3 knots | 10+ mi | 3,300 ft | 955 ft | 01:00 UTC |
| HPN White Plains, NY | destination | IFR Sky: overcast at 800 feet Weather: light rain | from the north-northeast (030°) at 8 knots, gusting to 15 | 2 mi | 800 ft | 439 ft | 8:56 pm EDT (00:56 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 HPN when you get there the forecast at the estimated arrival, 6:20 am EDT (10:20 UTC)
Wind from the north at 10 knots, visibility 6 miles, mist, showers nearby, overcast at 400 feet low IFR
The whole forecast for HPN
- From Sun 8:00 pm EDT (00:00 UTC): wind from the east at 12 knots, gusting to 18, visibility 2 miles, light rain showers, mist, scattered clouds at 400 feet, overcast at 600 feet
- From Sun 11:00 pm EDT (03:00 UTC): wind from the north-northeast at 11 knots, visibility 5 miles, light rain showers, mist, overcast at 400 feet
- From Mon 2:00 am EDT (06:00 UTC): wind from the north at 10 knots, visibility 6 miles, mist, showers nearby, overcast at 400 feet
- From Mon 7:00 am EDT (11:00 UTC): wind from the north at 9 knots, visibility more than 6 miles, overcast at 800 feet
- From Mon 10:00 am EDT (14:00 UTC): wind from the north-northwest at 9 knots, visibility more than 6 miles, a broken layer at 2,000 feet
- From Mon 1:00 pm EDT (17:00 UTC): wind from the north-northwest at 9 knots, visibility more than 6 miles, a few clouds at 2,500 feet, scattered clouds at 5,000 feet
The forecast for BZN, the departure
- From Sun 6:00 pm MDT (00:00 UTC): wind light and variable, visibility ½ mile, snow, fog, overcast at 300 feet
- At times between Sun 9:00 pm MDT (03:00 UTC) and 12:00 am MDT (06:00 UTC): visibility 2 miles, light snow, mist, scattered clouds at 300 feet, overcast at 1,200 feet
- From Mon 12:00 am MDT (06:00 UTC): wind from the west at 7 knots, visibility 2 miles, light snow, mist, overcast at 800 feet
- At times between Mon 12:00 am MDT (06:00 UTC) and 3:00 am MDT (09:00 UTC): visibility 6 miles, light snow, mist, overcast at 800 feet
- From Mon 3:00 am MDT (09:00 UTC): wind light and variable, visibility more than 6 miles, overcast at 800 feet
- From Mon 12:00 pm MDT (18:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 800 feet, overcast at 2,000 feet
- From Mon 5:00 pm MDT (23:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 1,500 feet, a broken layer at 11,000 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 1 nm from the route, 746 nm along the route · security · until 19 October · ZMP
- 5/2811 NEW YORK, NY, Monday, October 20, 2025 through Tuesday, October 20, 2026 Local 21 nm from the route, at the destination end · security · until 20 October · ZNY
Daylight
Sunset at BZN 6:44 pm MDT (00:44 UTC), at HPN 6:19 pm EDT (22:19 UTC) (civil twilight ends 6:46 pm EDT (22:46 UTC)). At 120 knots the arrival at HPN is before sunrise there (7:02 am EDT (11:02 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, Westchester County.