Ketchikan International to Bozeman Yellowstone International KTN → BZN
966 nautical miles (1,112 statute miles) southeast on a straight line, true course 118°, about 097° magnetic at the departure end (variation 21E). At 120 knots that is 5 h 22 min at the quickest height in today's winds (34,000 ft, a 60-knot tailwind), arriving about 1:58 am MDT (07:58 UTC), after sunset at the destination. Right now KTN is VFR, wind from the south-southeast (150°) at 4 knots; BZN is IFR, 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 TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Near the route, 657 nm along the route.
- AIRMET ZULU 2C: moderate icing up to 16,000 ft. Over the route from 677 to 936 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 249 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 229 nm of the route.
- 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 last 130 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 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 KTN.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- E75L descending, 25 nm northeast, 5:06 pm AKDT (01:06 UTC): overcast above 4,000 ft. 767 nm along the route, 25 nm northeast of the line.
as filed, and in English
GPI UA /OV KGPI/TM 0106/FLDURD/TP E75L/SK OVC040
- Report
- a routine report filed through GPI
- Where
- over KGPI
- Time
- 01:06 UTC
- Height
- during the descent
- Aircraft
- E75L
- Sky
- overcast from 4,000 ft
- BCS1 at 3,700 ft, 33 nm southwest, 5:47 pm AKDT (01:47 UTC): snow, rain, remarks: during the descent ils runway 12. 827 nm along the route, 33 nm southwest of the line.
as filed, and in English
MSO UA /OV MSO/TM 0147/FL037/TP BCS1/SK 037/WX SN RA/RM DURD ILS RY 12
- Report
- a routine report filed through MSO
- Where
- over MSO
- Time
- 01:47 UTC
- Height
- at 3,700 ft
- Aircraft
- BCS1
- Sky
- at 3,700 ft
- Weather
- snow, rain
- Remarks
- during the descent ils runway 12
- C25B at 4,100 ft, 33 nm southwest, 4:36 pm AKDT (00:36 UTC): no icing, overcast above 4,100 ft, remarks: during the descent ils runway 12. 827 nm along the route, 33 nm southwest of the line.
as filed, and in English
MSO UA /OV MSO/TM 0036/FL041/TP C25B/SK OVC041/IC NEG/RM DURD ILS RY 12
- Report
- a routine report filed through MSO
- Where
- over MSO
- Time
- 00:36 UTC
- Height
- at 4,100 ft
- Aircraft
- C25B
- Sky
- overcast from 4,100 ft
- Icing
- none
- Remarks
- during the descent ils runway 12
- E75L descending, 0 nm northwest, 5:04 pm AKDT (01:04 UTC): remarks: had the airport in sight at 400-500FT above ground. At the destination 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, 4:28 pm AKDT (00:28 UTC): scattered clouds above 8,000 ft, fog, snow, remarks: broke out about 100FT above mins. At the destination 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
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 1 forecast point nearest it (ANN). 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 13 kt | +5 kt | 115 kt | 8 h 24 min | 5:00 am MDT (11:00 UTC) | |
| 5,500 ft | 230° at 19 kt | −3 kt | 123 kt | 7 h 51 min | 4:27 am MDT (10:27 UTC) | |
| 7,500 ft | 230° at 22 kt | −5 kt | 2 °C | 125 kt | 7 h 44 min | 4:20 am MDT (10:20 UTC) |
| 9,500 ft | 230° at 25 kt | −6 kt | -1 °C | 126 kt | 7 h 40 min | 4:16 am MDT (10:16 UTC) |
| 11,500 ft | 230° at 28 kt | −7 kt | -3 °C | 127 kt | 7 h 36 min | 4:12 am MDT (10:12 UTC) |
| 13,500 ft | 240° at 30 kt | −10 kt | -7 °C | 130 kt | 7 h 26 min | 4:02 am MDT (10:02 UTC) |
| 15,500 ft | 240° at 32 kt | −14 kt | -10 °C | 134 kt | 7 h 13 min | 3:49 am MDT (09:49 UTC) |
| 17,500 ft | 250° at 34 kt | −18 kt | -14 °C | 138 kt | 7 h | 3:36 am MDT (09:36 UTC) |
| 18,000 ft FL180 | 250° at 35 kt | −19 kt | -15 °C | 139 kt | 6 h 57 min | 3:33 am MDT (09:33 UTC) |
| 24,000 ft FL240 | 250° at 46 kt | −25 kt | -27 °C | 145 kt | 6 h 40 min | 3:16 am MDT (09:16 UTC) |
| 30,000 ft FL300 | 270° at 51 kt | −41 kt | -41 °C | 161 kt | 6 h | 2:36 am MDT (08:36 UTC) |
| 34,000 ft FL340 | 280° at 67 kt | −60 kt | -51 °C | 180 kt | 5 h 22 min | 1:58 am MDT (07:58 UTC) |
| 39,000 ft FL390 | 280° at 54 kt | −48 kt | -57 °C | 168 kt | 5 h 45 min | 2:21 am MDT (08:21 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| ANN | used from 0 nm out; 18 nm from the line | 180/12 | 230/21 4° | 230/24 0° | 230/29 -4° | 250/35 -15° | 250/46 -27° | 270/51 -41° | 280/67 -51° | 280/54 -57° |
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 |
|---|---|---|---|---|---|---|---|
| KTN Ketchikan, AK | departure | VFR Sky: overcast at 6,500 feet | from the south-southeast (150°) at 4 knots | 10+ mi | 6,500 ft | 92 ft | 5:53 pm AKDT (01:53 UTC) |
| CYXT Terrace, | 120 nm out, 6 nm northeast of the line | VFR Sky: a few clouds at 13,000 feet, a broken layer at 16,000 feet, a broken layer at 24,000 feet | from the north-northeast (020°) at 6 knots | 20 mi | 16,000 ft | 713 ft | 02:00 UTC |
| HLN Helena, MT | 907 nm out, 12 nm northeast of the line, tower | low IFR Sky: sky obscured at 1,000 feet Weather: light snow, mist | from the west (280°) at 8 knots | 0.75 mi | 1,000 ft | 3,877 ft | 02:32 UTC |
| BZN Bozeman, MT | destination | IFR Sky: scattered clouds at 400 feet, overcast at 1,400 feet Weather: light snow, mist | calm | 1 mi | 1,400 ft | 4,473 ft | 8:22 pm MDT (02:22 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 BZN when you get there the forecast at the estimated arrival, 1:58 am MDT (07:58 UTC)
Wind from the west at 7 knots, visibility 2 miles, light snow, mist, overcast at 800 feet IFR
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 IFR
The whole forecast for BZN
- 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
The forecast for KTN, the departure
- From Sun 4:00 pm AKDT (00:00 UTC): wind from the southeast at 4 knots, visibility more than 6 miles, light rain, scattered clouds at 6,000 feet, overcast at 9,000 feet
- From Sun 7:00 pm AKDT (03:00 UTC): wind from the southeast at 7 knots, visibility more than 6 miles, a broken layer at 4,000 feet, overcast at 7,000 feet
- 30% chance between Sun 10:00 pm AKDT (06:00 UTC) and 1:00 am AKDT (09:00 UTC): light rain, a broken layer at 3,500 feet
- From Mon 1:00 am AKDT (09:00 UTC): wind from the southeast at 7 knots, visibility more than 6 miles, light rain, overcast at 2,000 feet
- From Mon 7:00 am AKDT (15:00 UTC): wind from the southeast at 6 knots, visibility more than 6 miles, light rain, a broken layer at 2,000 feet, overcast at 5,000 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 KTN 5:54 pm AKDT (01:54 UTC), at BZN 6:44 pm MDT (00:44 UTC) (civil twilight ends 7:14 pm MDT (01:14 UTC)). At 120 knots the arrival at BZN is before sunrise there (7:36 am MDT (13:36 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: Ketchikan International, Bozeman Yellowstone International.