Bozeman Yellowstone International to Denver International BZN → DEN
455 nautical miles (524 statute miles) southeast on a straight line, true course 139°, about 126° magnetic at the departure end (variation 13E). At 120 knots that is 3 h 48 min at the quickest height in today's winds (39,000 ft, no wind along the track), arriving about 12:53 am MDT (06:53 UTC), after sunset at the destination. Right now BZN is low IFR, wind from the west-southwest (240°) at 3 knots; DEN is VFR, wind from the south-southwest (200°) at 16 knots. 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: 5,424 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 188 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 20,000 ft. Over the first 30 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 257 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 426 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 40 to 257 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). Over the route from 89 to 416 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 346 nm of the route.
- AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Near the route, 257 nm along the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Near the route, 396 nm along 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
- urgent CRJ2 at 7,000 ft, 48 nm northeast, 7:04 pm MDT (01:04 UTC): moderate turbulence, remarks: low-level wind shear dept runway 03 gain/loss unknown. 257 nm along the route, 48 nm northeast of the line.
as filed, and in English
CPR UUA /OV CPR035002/TM 0104/FL070/TP CRJ2/TB CONT MOD TURB/RM LLWS DEPT RY03 GAIN/LOSS UNKN
- Report
- an urgent report filed through CPR
- Where
- 2 nm northeast (035°) of CPR
- Time
- 01:04 UTC
- Height
- at 7,000 ft
- Aircraft
- CRJ2
- Turbulence
- continuous moderate turbulence
- Remarks
- low-level wind shear dept runway 03 gain/loss unknown
- S22T at 15,000 ft, 32 nm southwest, 7:47 pm MDT (01:47 UTC): moderate rime icing above 15,000 ft, -5 °C. 99 nm along the route, 32 nm southwest of the line.
as filed, and in English
JAC UA /OV DNW010020/TM 0147/FL150/TP S22T/TA M05/IC MOD RIME 150 /ZLC
- Report
- a routine report filed through JAC
- Where
- 20 nm north (010°) of DNW
- Time
- 01:47 UTC
- Height
- at 15,000 ft
- Aircraft
- S22T
- Temperature
- −5 °C
- Icing
- moderate rime at 15,000 ft zlc
- CRJ2 at 19,000 ft, 14 nm southwest, 6:47 pm MDT (00:47 UTC): moderate chop turbulence, remarks: ZDVWC-13. 376 nm along the route, 14 nm southwest of the line.
as filed, and in English
EGE UA /OV RLG010052/TM 0047/FL190/TP CRJ2/TB COSN MOD CHOP/RM ZDVWC-13
- Report
- a routine report filed through EGE
- Where
- 52 nm north (010°) of RLG
- Time
- 00:47 UTC
- Height
- at 19,000 ft
- Aircraft
- CRJ2
- Turbulence
- cosn moderate chop
- Remarks
- ZDVWC-13
- B738 at 23,000 ft, 18 nm southwest, 8:34 pm MDT (02:34 UTC): moderate turbulence, remarks: during the climb ZDVWC-05. 435 nm along the route, 18 nm southwest of the line.
as filed, and in English
DEN UA /OV DVV270030/TM 0234/FL230/TP B738/TB MOD /RM DURC ZDVWC-05
- Report
- a routine report filed through DEN
- Where
- 30 nm west (270°) of DVV
- Time
- 02:34 UTC
- Height
- at 23,000 ft
- Aircraft
- B738
- Turbulence
- moderate
- Remarks
- during the climb ZDVWC-05
- BCS1 at 24,000 ft, 18 nm southwest, 7:30 pm MDT (01:30 UTC): moderate turbulence from 22,000 ft to 24,000 ft, remarks: during the climb ZDVWC-05. 435 nm along the route, 18 nm southwest of the line.
as filed, and in English
DEN UA /OV DVV270030/TM 0130/FL240/TP BCS1/TB MOD 220-240/RM DURC ZDVWC-05
- Report
- a routine report filed through DEN
- Where
- 30 nm west (270°) of DVV
- Time
- 01:30 UTC
- Height
- at 24,000 ft
- Aircraft
- BCS1
- Turbulence
- moderate from 22,000 ft to 24,000 ft
- Remarks
- during the climb ZDVWC-05
- GLF4 at 25,000 ft, 40 nm southwest, 8:05 pm MDT (02:05 UTC): moderate turbulence, remarks: during the climb ZDVWC-05. At the destination end, 40 nm southwest of the line.
as filed, and in English
DEN UA /OV FQF250040/TM 0205/FL250/TP GLF4/TB MOD /RM DURC ZDVWC-05
- Report
- a routine report filed through DEN
- Where
- 40 nm west (250°) of FQF
- Time
- 02:05 UTC
- Height
- at 25,000 ft
- Aircraft
- GLF4
- Turbulence
- moderate
- Remarks
- during the climb ZDVWC-05
- E75L descending, 0 nm northwest, 7:04 pm MDT (01:04 UTC): remarks: had the airport in sight at 400-500FT above ground. At the departure end, 0 nm northwest of the line.
as filed, and in English
BZN UA /OV BZN/TM 0104/FLDURD/TP E75L/RM HAD THE AIRPORT IN SIGHT AT 400-500FT AGL
- Report
- a routine report filed through BZN
- Where
- over BZN
- Time
- 01:04 UTC
- Height
- during the descent
- Aircraft
- E75L
- Remarks
- had the airport in sight at 400-500FT above ground
- B737 descending, 0 nm northwest, 6:28 pm MDT (00:28 UTC): scattered clouds above 8,000 ft, fog, snow, remarks: broke out about 100FT above mins. At the departure end, 0 nm northwest of the line.
as filed, and in English
BZN UA /OV BZN/TM 0028/FLDURD/TP B737/SK SCT080/WX 1/2SM SN FG/RM BROKE OUT ABOUT 100FT ABOVE MINS
- Report
- a routine report filed through BZN
- Where
- over BZN
- Time
- 00:28 UTC
- Height
- during the descent
- Aircraft
- B737
- Sky
- scattered clouds from 8,000 ft
- Weather
- 1/2SM, snow, fog
- Remarks
- broke out about 100FT above mins
- UAL1076 at 30,000 ft, 44 nm northeast, 8:36 pm MDT (02:36 UTC): light turbulence, wind 225° at 60 knots. 168 nm along the route, 44 nm northeast of the line.
as filed, and in English
ARP UAL1076 4405N 10749W 0236 F300 225/060KT TB CONT LGT TURB IC
- Report
- a routine report filed through ARP
- CRJ2 at 9,000 ft, 32 nm northeast, 6:35 pm MDT (00:35 UTC): light chop turbulence, vmc, remarks: occasional moderate turbulence at at 15,000 ft. 257 nm along the route, 32 nm northeast of the line.
as filed, and in English
CPR UA /OV CPR215015/TM 0035/FL090/TP CRJ2/WX VMC/TB LGT CHOP/RM OCNL MOD TURB AT 150
- Report
- a routine report filed through CPR
- Where
- 15 nm southwest (215°) of CPR
- Time
- 00:35 UTC
- Height
- at 9,000 ft
- Aircraft
- CRJ2
- Weather
- visual conditions
- Turbulence
- light chop
- Remarks
- occasional moderate turbulence at at 15,000 ft
- C56X at 13,000 ft, 15 nm northeast, 7:33 pm MDT (01:33 UTC): light chop turbulence, remarks: zdvwc. 356 nm along the route, 15 nm northeast of the line.
as filed, and in English
LAR UA /OV LAR/TM 0133/FL130/TP C56X/SK BASE160/TB OCNL CONS LGT CHOP/RM ZDVWC
- Report
- a routine report filed through LAR
- Where
- over LAR
- Time
- 01:33 UTC
- Height
- at 13,000 ft
- Aircraft
- C56X
- Sky
- BASE160
- Turbulence
- occasional continuous light chop
- Remarks
- zdvwc
- B737 descending, 3 nm south, 8:29 pm MDT (02:29 UTC): no turbulence up to 10,000 ft. At the destination end, 3 nm south of the line.
as filed, and in English
DEN UA /OV DEN/TM 0229/FLDURD/TP B737/TB NEG BLO 100
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 02:29 UTC
- Height
- during the descent
- Aircraft
- B737
- Turbulence
- no below 10,000 ft
- B737 descending, 3 nm south, 7:23 pm MDT (01:23 UTC): no turbulence up to 10,000 ft. At the destination end, 3 nm south of the line.
as filed, and in English
DEN UA /OV DEN/TM 0123/FLDURD/TP B737/TB NEG BLO 100
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 01:23 UTC
- Height
- during the descent
- Aircraft
- B737
- Turbulence
- no below 10,000 ft
- E55P at 38,000 ft, 48 nm south, 7:23 pm MDT (01:23 UTC): light chop turbulence, remarks: ZDVWC-05. At the destination end, 48 nm south of the line.
as filed, and in English
DEN UA /OV FQF200040/TM 0123/FL380/TP E55P/TB LGT CHOP/RM ZDVWC-05
- Report
- a routine report filed through DEN
- Where
- 40 nm south (200°) of FQF
- Time
- 01:23 UTC
- Height
- at 38,000 ft
- Aircraft
- E55P
- Turbulence
- light chop
- Remarks
- ZDVWC-05
3 more routine reports are on the map.
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, BIL, LND, RKS, DEN). 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 18 kt | +8 kt | 7 °C | 112 kt | 4 h 04 min | 1:09 am MDT (07:09 UTC) |
| 9,500 ft | 210° at 21 kt | +7 kt | 5 °C | 113 kt | 4 h 02 min | 1:07 am MDT (07:07 UTC) |
| 11,500 ft | 230° at 31 kt | +2 kt | 2 °C | 118 kt | 3 h 51 min | 12:56 am MDT (06:56 UTC) |
| 13,500 ft | 230° at 36 kt | +3 kt | -2 °C | 117 kt | 3 h 53 min | 12:58 am MDT (06:58 UTC) |
| 15,500 ft | 220° at 38 kt | +6 kt | -6 °C | 114 kt | 3 h 59 min | 1:04 am MDT (07:04 UTC) |
| 17,500 ft | 220° at 41 kt | +8 kt | -10 °C | 112 kt | 4 h 04 min | 1:09 am MDT (07:09 UTC) |
| 18,000 ft FL180 | 220° at 42 kt | +9 kt | -11 °C | 111 kt | 4 h 06 min | 1:11 am MDT (07:11 UTC) |
| 24,000 ft FL240 | 220° at 45 kt | +8 kt | -23 °C | 112 kt | 4 h 04 min | 1:09 am MDT (07:09 UTC) |
| 30,000 ft FL300 | 220° at 54 kt | +11 kt | -30 °C | 109 kt | 4 h 10 min | 1:15 am MDT (07:15 UTC) |
| 34,000 ft FL340 | 220° at 65 kt | +8 kt | -36 °C | 112 kt | 4 h 04 min | 1:09 am MDT (07:09 UTC) |
| 39,000 ft FL390 | 230° at 64 kt | 0 | -45 °C | 120 kt | 3 h 48 min | 12:53 am MDT (06:53 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; 76 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° | ||
| BIL | used from 49 nm out; 85 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° | |
| LND | used from 99 nm out; 87 nm from the line | 200/23 6° | 220/31 1° | 220/39 -11° | 230/39 -23° | 220/51 -28° | 220/66 -37° | 230/68 -45° | ||
| RKS | used from 297 nm out; 117 nm from the line | 200/41 | 220/44 1° | 220/35 -11° | 220/46 -24° | 210/53 -27° | 220/62 -35° | 230/61 -44° | ||
| DEN | used from 346 nm out; 84 nm from the line | 240/21 14° | 250/44 6° | 220/49 -8° | 220/49 -21° | 230/54 -30° | 240/57 -35° | 240/49 -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: a few clouds at 300 feet, overcast at 1,100 feet Weather: light snow, mist | from the west-southwest (240°) at 3 knots | 0.75 mi | 1,100 ft | 4,473 ft | 8:56 pm MDT (02:56 UTC) |
| LVM Livingston, MT | 20 nm out, 19 nm northeast of the line | IFR Sky: scattered clouds at 400 feet, overcast at 1,100 feet Weather: light snow, mist | from the east (090°) at 13 knots | 1.25 mi | 1,100 ft | 4,659 ft | 03:00 UTC |
| COD Cody, WY | 119 nm out, 20 nm northeast of the line | IFR Sky: overcast at 800 feet Weather: light rain, mist | from the north (360°) at 10 knots | 6 mi | 800 ft | 5,102 ft | 02:56 UTC |
| HSG Thermopolis, WY | 168 nm out, 11 nm northeast of the line | marginal VFR Sky: overcast at 1,000 feet Weather: mist | from the north (350°) at 8 knots | 5 mi | 1,000 ft | 4,891 ft | 02:55 UTC |
| RIW Riverton, WY | 198 nm out, 17 nm southwest of the line | VFR | variable at 4 knots | 10+ mi | none | 5,516 ft | 02:53 UTC |
| SAA Saratoga, WY | 317 nm out, 21 nm southwest of the line | reported, no category | from the south-southeast (150°) at 18 knots, gusting to 23 | 10+ mi | none | 7,014 ft | 02:50 UTC |
| LAR Laramie, WY | 356 nm out, 16 nm northeast of the line | VFR Sky: a few clouds at 8,000 feet, scattered clouds at 10,000 feet, a broken layer at 11,000 feet | from the south-southwest (200°) at 6 knots | 10+ mi | 11,000 ft | 7,283 ft | 02:53 UTC |
| FNL Fort Collins/Loveland, CO | 416 nm out, 9 nm northeast of the line, tower | VFR | from the northeast (050°) at 5 knots | 10+ mi | none | 5,020 ft | 02:56 UTC |
| DEN Denver, CO | destination | VFR Sky: a few clouds at 14,000 feet, a broken layer at 22,000 feet | from the south-southwest (200°) at 16 knots | 10+ mi | 22,000 ft | 5,433 ft | 8:53 pm MDT (02:53 UTC) |
The highest airport on this list sits at 7,283 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At DEN when you get there the forecast at the estimated arrival, 12:53 am MDT (06:53 UTC)
Wind from the south at 14 knots, gusting to 23, visibility more than 6 miles, a few clouds at 14,000 feet, a broken layer at 22,000 feet VFR
The whole forecast for DEN
- From Sun 9:00 pm MDT (03:00 UTC): wind from the south at 14 knots, gusting to 23, visibility more than 6 miles, a few clouds at 14,000 feet, a broken layer at 22,000 feet
- From Mon 1:00 am MDT (07:00 UTC): wind from the south at 11 knots, visibility more than 6 miles, a few clouds at 22,000 feet
- From Mon 9:00 am MDT (15:00 UTC): wind from the southwest at 14 knots, gusting to 21, visibility more than 6 miles, clear skies
- From Mon 4:00 pm MDT (22:00 UTC): wind from the south at 9 knots, visibility more than 6 miles, clear skies
- From Mon 7:00 pm MDT (01:00 UTC): wind from the northeast at 8 knots, visibility more than 6 miles, clear skies
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
No temporary flight restriction on or near this route right now.
Daylight
Sunset at BZN 6:44 pm MDT (00:44 UTC), at DEN 6:24 pm MDT (00:24 UTC) (civil twilight ends 6:51 pm MDT (00:51 UTC)). At 120 knots the arrival at DEN is before sunrise there (7:05 am MDT (13:05 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, Denver International.