Plan a flight · Mon 12:40 am MDT (06:40 UTC)

City Of Colorado Springs Municipal to Missoula Montana Airport COS → MSO

638 nautical miles (734 statute miles) northwest on a straight line, true course 323°, about 315° magnetic at the departure end (variation 8E). At 120 knots that is 4 h 48 min at the quickest height in today's winds (30,000 ft, a 13-knot tailwind), arriving about 5:28 am MDT (11:28 UTC), after sunset at the destination. Right now COS is VFR, wind from the south (180°) at 10 knots; MSO 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

SIGMET C10C: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 40 knots, until 1:55 am MDT (07:55 UTC). Near the route, at the departure end.

as issued

WSUS32 KKCI 120555
MKCC WST 120555
CONVECTIVE SIGMET 10C
VALID UNTIL 0755Z
CO NM
FROM 20NNE PUB-40WSW LAA-30WSW CIM-50WSW ALS-50ESE HBU-20NNE PUB
AREA TS MOV FROM 22040KT. TOPS TO FL340.

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 first 309 nm of the route.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the first 349 nm of the route.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 359 nm of the route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 488 nm of the route.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 189 to 478 nm out.
AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 189 to 279 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 last 269 nm of the route.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 149 nm of the route.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 140 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 COS.

Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first

B38M at 30,000 ft, 44 nm northeast, 11:45 pm MDT (05:45 UTC): moderate chop turbulence. 239 nm along the route, 44 nm northeast of the line.
as filed, and in English
```
RIW UA /OV BOY126080/TM 0545/FL300/TP B38M/TB CONS MOD CHOP /ZLC
```
Report
a routine report filed through RIW
Where
80 nm southeast (126°) of BOY
Time
05:45 UTC
Height
at 30,000 ft
Aircraft
B38M
Turbulence
continuous moderate chop zlc
E170 at 22,500 ft, 18 nm southwest, 11:06 pm MDT (05:06 UTC): light to moderate turbulence up to 23,000 ft, remarks: during the descent tbarr star ZDVWC-13. 40 nm along the route, 18 nm southwest of the line.
as filed, and in English
```
DEN UA /OV DEN216057/TM 0506/FL225/TP E170/TB CONS LGT OCNL MOD BLO 230/RM DURD TBARR STAR. ZDVWC-13
```
Report
a routine report filed through DEN
Where
57 nm southwest (216°) of DEN
Time
05:06 UTC
Height
at 22,500 ft
Aircraft
E170
Turbulence
continuous light occasional moderate below 23,000 ft
Remarks
during the descent tbarr star ZDVWC-13
B738 at 23,000 ft, 22 nm southwest, 12:23 am MDT (06:23 UTC): no turbulence from 23,000 ft to 26,000 ft, clear from 23,000 ft to 60,000 ft, remarks: during the descent sskii star ZDVWC-06. 50 nm along the route, 22 nm southwest of the line.
as filed, and in English
```
DEN UA /OV DEN230060/TM 0623/FL230/TP B738/SK SKC/TB NEG 230-260/RM DURD SSKII STAR. ZDVWC-06
```
Report
a routine report filed through DEN
Where
60 nm southwest (230°) of DEN
Time
06:23 UTC
Height
at 23,000 ft
Aircraft
B738
Sky
clear
Turbulence
no from 23,000 ft to 26,000 ft
Remarks
during the descent sskii star ZDVWC-06
B738 descending, 38 nm northeast, 12:15 am MDT (06:15 UTC): light chop turbulence. 50 nm along the route, 38 nm northeast of the line.
as filed, and in English
```
DEN UA /OV DEN/TM 0615/FLDURD/TP B738/TB LGT CHOP
```
Report
a routine report filed through DEN
Where
over DEN
Time
06:15 UTC
Height
during the descent
Aircraft
B738
Turbulence
light chop
A20N at 25,000 ft, 4 nm south, 12:19 am MDT (06:19 UTC): light chop turbulence up to 26,000 ft, remarks: during the climb ZDVWC-06. 70 nm along the route, 4 nm south of the line.
as filed, and in English
```
DEN UA /OV DEN250045/TM 0619/FL250/TP A20N/TB OCNL LGT CHOP BLO 260/RM DURC. ZDVWC-06
```
Report
a routine report filed through DEN
Where
45 nm west (250°) of DEN
Time
06:19 UTC
Height
at 25,000 ft
Aircraft
A20N
Turbulence
occasional light chop below 26,000 ft
Remarks
during the climb ZDVWC-06
B38M at 21,500 ft, 27 nm northeast, 10:33 pm MDT (04:33 UTC): light turbulence up to 25,000 ft, remarks: during the descent flati star ZDVWC-13. 110 nm along the route, 27 nm northeast of the line.
as filed, and in English
```
DEN UA /OV DEN305065/TM 0433/FL215/TP B38M/TB LGT BLO 250/RM DURD FLATI STAR. ZDVWC-13
```
Report
a routine report filed through DEN
Where
65 nm northwest (305°) of DEN
Time
04:33 UTC
Height
at 21,500 ft
Aircraft
B38M
Turbulence
light below 25,000 ft
Remarks
during the descent flati star ZDVWC-13
E73L descending, 44 nm northeast, 12:20 am MDT (06:20 UTC): remarks: breaking action good broke out about 600FT above ground. 508 nm along the route, 44 nm northeast of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 0620/FLDURD/TP E73L/RM BREAKING ACTION GOOD. BROKE OUT ABOUT 600FT AGL
```
Report
a routine report filed through BZN
Where
over BZN
Time
06:20 UTC
Height
during the descent
Aircraft
E73L
Remarks
breaking action good broke out about 600FT above ground
B737 , 44 nm northeast, 11:31 pm MDT (05:31 UTC): remarks: saw the light at 500FT braking good no icing. 508 nm along the route, 44 nm northeast 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, 44 nm northeast, 9:46 pm MDT (03:46 UTC): remarks: broke out 100-150FT above ground. 508 nm along the route, 44 nm northeast 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 westbound cruising heights for this course (VFR: even thousands plus 500 ft; above 18,000 ft the forecast levels), with the wind averaged along the line from the 4 forecast points nearest it (DEN, RKS, LND, DLN). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
8,500 ft	200° at 15 kt	−7 kt	3 °C	127 kt	5 h 01 min	5:41 am MDT (11:41 UTC)
10,500 ft	220° at 23 kt	−2 kt	2 °C	122 kt	5 h 14 min	5:54 am MDT (11:54 UTC)
12,500 ft	230° at 32 kt	+1 kt	-1 °C	119 kt	5 h 22 min	6:02 am MDT (12:02 UTC)
14,500 ft	230° at 34 kt	−3 kt	-5 °C	123 kt	5 h 11 min	5:51 am MDT (11:51 UTC)
16,500 ft	220° at 37 kt	−6 kt	-9 °C	126 kt	5 h 04 min	5:44 am MDT (11:44 UTC)
18,000 ft FL180	220° at 39 kt	−9 kt	-12 °C	129 kt	4 h 57 min	5:37 am MDT (11:37 UTC)
24,000 ft FL240	220° at 51 kt	−11 kt	-23 °C	131 kt	4 h 52 min	5:32 am MDT (11:32 UTC)
30,000 ft FL300	220° at 57 kt	−13 kt	-31 °C	133 kt	4 h 48 min	5:28 am MDT (11:28 UTC)
34,000 ft FL340	220° at 68 kt	−12 kt	-36 °C	132 kt	4 h 50 min	5:30 am MDT (11:30 UTC)
39,000 ft FL390	230° at 65 kt	−3 kt	-44 °C	123 kt	5 h 11 min	5:51 am MDT (11:51 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	9,000	12,000	18,000	24,000	30,000	34,000	39,000
DEN	used from 0 nm out; 47 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°
RKS	used from 149 nm out; 96 nm from the line	200/41	220/44 1°	220/35 -11°	220/46 -24°	210/53 -27°	220/62 -35°	230/61 -44°
LND	used from 249 nm out; 29 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°
DLN	used from 399 nm out; 100 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°

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
COS Colorado Springs, CO	departure	VFR Sky: a few clouds at 2,000 feet, a few clouds at 18,000 feet	from the south (180°) at 10 knots	10+ mi	none	6,187 ft	11:54 pm MDT (05:54 UTC)
APA Denver, CO	40 nm out, 22 nm northeast of the line, tower	VFR Sky: a few clouds at 12,000 feet, scattered clouds at 22,000 feet	from the south (170°) at 9 knots	10+ mi	none	5,884 ft	05:53 UTC
GNB Granby, CO	100 nm out, 5 nm east of the line	VFR Sky: a broken layer at 9,000 feet	from the west-southwest (250°) at 5 knots	10+ mi	9,000 ft	8,207 ft	06:15 UTC
SBS Steamboat Springs, CO	140 nm out, 16 nm southwest of the line	VFR Sky: a broken layer at 8,000 feet, a broken layer at 9,500 feet, a broken layer at 12,000 feet	from the east-southeast (110°) at 3 knots	10+ mi	8,000 ft	6,882 ft	06:35 UTC
RWL Rawlins, WY	209 nm out, 21 nm northeast of the line	VFR	from the south (180°) at 5 knots	10+ mi	none	6,816 ft	13:53 UTC
LND Lander, WY	299 nm out, 7 nm northeast of the line	marginal VFR Sky: a broken layer at 1,000 feet, overcast at 7,500 feet	from the northwest (310°) at 5 knots	10+ mi	1,000 ft	5,588 ft	05:53 UTC
DUB Dubois, WY	359 nm out, 5 nm north of the line	VFR Sky: scattered clouds at 700 feet, a broken layer at 6,000 feet, overcast at 7,000 feet Weather: light drizzle	from the northwest (310°) at 4 knots	10+ mi	6,000 ft	7,298 ft	06:35 UTC
WYS West Yellowstone, MT	458 nm out, 4 nm southeast of the line	low IFR Sky: overcast at 400 feet Weather: light snow, mist	calm	2.5 mi	400 ft	6,649 ft	06:35 UTC
RVF Twin Bridges, MT	528 nm out, 3 nm south of the line	IFR Sky: scattered clouds at 600 feet, overcast at 2,500 feet Weather: mist	from the north-northeast (030°) at 18 knots, gusting to 23	2 mi	2,500 ft	4,788 ft	06:35 UTC
MSO Missoula, MT	destination	VFR Sky: a few clouds at 1,700 feet, overcast at 6,000 feet	calm	10+ mi	6,000 ft	3,205 ft	12:07 am MDT (06:07 UTC)

The highest airport on this list sits at 8,207 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At MSO when you get there the forecast at the estimated arrival, 5:28 am MDT (11:28 UTC)

Wind from the east at 4 knots, visibility 4 miles, light snow, mist, overcast at 1,500 feet marginal VFR

The whole forecast for MSO

From Mon 12:00 am MDT (06:00 UTC): wind from the east at 2 knots, visibility more than 6 miles, showers nearby, scattered clouds at 1,500 feet, a broken layer at 4,000 feet
From Mon 1:00 am MDT (07:00 UTC): wind from the east at 4 knots, visibility 4 miles, light snow, mist, overcast at 1,500 feet
From Mon 8:00 am MDT (14:00 UTC): wind from the east-southeast at 4 knots, visibility more than 6 miles, overcast at 5,000 feet
From Mon 2:00 pm MDT (20:00 UTC): wind from the east-southeast at 5 knots, visibility more than 6 miles, overcast at 10,000 feet

The forecast for COS, the departure

From Mon 12:00 am MDT (06:00 UTC): wind from the south at 12 knots, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 20,000 feet
From Mon 6:00 am MDT (12:00 UTC): wind from the north-northeast at 8 knots, visibility more than 6 miles, clear skies
From Mon 11:00 am MDT (17:00 UTC): wind from the south at 15 knots, gusting to 25, visibility more than 6 miles, scattered clouds at 12,000 feet
From Mon 1:00 pm MDT (19:00 UTC): wind from the south-southwest at 20 knots, gusting to 30, visibility more than 6 miles, scattered clouds at 12,000 feet
From Mon 7:00 pm MDT (01:00 UTC): wind from the south-southwest at 12 knots, visibility more than 6 miles, clear skies

Temporary flight restrictions on the line or within 25 nm of it

6/8784 LAKE GEORGE, CO, Sunday, October 11, 2026 through Tuesday, October 13, 2026 UTC 18 nm from the route, 30 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZDV

Daylight

Sunset at COS 6:23 pm MDT (00:23 UTC), at MSO 6:53 pm MDT (00:53 UTC) (civil twilight ends 7:23 pm MDT (01:23 UTC)). At 120 knots the arrival at MSO is before sunrise there (7:49 am MDT (13:49 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

Radar now, the southern Rockies · loop National Weather Service

Radar now, the northern Rockies · loop National Weather Service

Radar, the whole country · loop National Weather Service

Surface analysis now Weather Prediction Center

Forecast chart, 12 hours ahead Weather Prediction Center

Forecast chart, 24 hours ahead Weather Prediction Center

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: City Of Colorado Springs Municipal, Missoula Montana Airport.