City Of Colorado Springs Municipal to Idaho Falls Regional COS → IDA
437 nautical miles (502 statute miles) northwest on a straight line, true course 313°, about 305° magnetic at the departure end (variation 8E). At 120 knots that is 3 h 16 min at the quickest height in today's winds (8,500 ft, a 14-knot tailwind), arriving about 10:54 pm MDT (04:54 UTC), after sunset at the destination. Right now COS is VFR, wind from the west-southwest (240°) at 14 knots, gusting to 25; IDA is IFR, wind from the south-southeast (150°) at 6 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: 4 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 1W: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 40 knots, until 8:55 pm MDT (02:55 UTC). Over the route from 149 to 189 nm out.
as issued
WSUS33 KKCI 120055 MKCW WST 120055 CONVECTIVE SIGMET 1W VALID UNTIL 0255Z CO NM WY AZ UT FROM 40NNW CHE-40WNW TBE-60WNW CME-40N SJN-40ESE MTU-40NNW CHE AREA SEV TS MOV FROM 23040KT. TOPS TO FL340. WIND GUSTS TO 60KT POSS.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the whole route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 397 nm of the route.
- 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 50 to 367 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 60 to 109 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 179 to 268 nm out.
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the last 238 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 238 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 79 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
- GLF5 at 45,000 ft, 18 nm northeast, 4:44 pm MDT (22:44 UTC): moderate turbulence, remarks: ZDVWC-46. 20 nm along the route, 18 nm northeast of the line.
as filed, and in English
COS UA /OV COS350025/TM 2244/FL450/TP GLF5/TB MOD /RM ZDVWC-46
- Report
- a routine report filed through COS
- Where
- 25 nm north (350°) of COS
- Time
- 22:44 UTC
- Height
- at 45,000 ft
- Aircraft
- GLF5
- Turbulence
- moderate
- Remarks
- ZDVWC-46
- C680A at 16,000 ft, 49 nm southwest, 4:59 pm MDT (22:59 UTC): moderate turbulence, scattered clouds above 16,000 ft, remarks: during the descent. 89 nm along the route, 49 nm southwest of the line.
as filed, and in English
ASE UA /OV HAERI/TM 2259/FL160/TP C680A/SK SCT160/TB CONS MOD/RM DURD
- Report
- a routine report filed through ASE
- Where
- haeri
- Time
- 22:59 UTC
- Height
- at 16,000 ft
- Aircraft
- C680A
- Sky
- scattered clouds from 16,000 ft
- Turbulence
- continuous moderate
- Remarks
- during the descent
- C650 at 40,000 ft, 40 nm southwest, 5:48 pm MDT (23:48 UTC): moderate turbulence, remarks: ZDVWC-03. 99 nm along the route, 40 nm southwest of the line.
as filed, and in English
ASE UA /OV DBL/TM 2348/FL400/TP C650/TB MOD /RM ZDVWC-03
- Report
- a routine report filed through ASE
- Where
- over DBL
- Time
- 23:48 UTC
- Height
- at 40,000 ft
- Aircraft
- C650
- Turbulence
- moderate
- Remarks
- ZDVWC-03
- CRJ2 at 19,000 ft, 49 nm northeast, 6:47 pm MDT (00:47 UTC): moderate chop turbulence, remarks: ZDVWC-13. 119 nm along the route, 49 nm northeast 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
- B39M at 32,000 ft, 15 nm northeast, 5:58 pm MDT (23:58 UTC): moderate chop turbulence, no icing, remarks: moderate mtw a 30-knot loss of airspeed ZDVWC-14. 119 nm along the route, 15 nm northeast of the line.
as filed, and in English
EEO UA /OV EKR069073/TM 2358/FL320/TP B39M/TB OCNL MOD CHOP/IC NEG/RM MOD MTW +/-30KT ZDVWC-14
- Report
- a routine report filed through EEO
- Where
- 73 nm east (069°) of EKR
- Time
- 23:58 UTC
- Height
- at 32,000 ft
- Aircraft
- B39M
- Turbulence
- occasional moderate chop
- Icing
- none
- Remarks
- moderate mtw a 30-knot loss of airspeed ZDVWC-14
- A21N at 31,000 ft, 33 nm southeast, 6:24 pm MDT (00:24 UTC): remarks: mountain wave +/-10-20KT ZDVWC-29. At the departure end, 33 nm southeast of the line.
as filed, and in English
PUB UA /OV PUB/TM 0024/FL310/TP A21N/RM MTN WAVE +/-10-20KT ZDVWC-29
- Report
- a routine report filed through PUB
- Where
- over PUB
- Time
- 00:24 UTC
- Height
- at 31,000 ft
- Aircraft
- A21N
- Remarks
- mountain wave +/-10-20KT ZDVWC-29
- CL35 at 43,000 ft, 47 nm southwest, 6:21 pm MDT (00:21 UTC): remarks: mtw +/-300FT zdvwc. At the departure end, 47 nm southwest of the line.
as filed, and in English
PUB UA /OV PUB250040/TM 0021/FL430/TP CL35/RM MTW +/-300FT ZDVWC
- Report
- a routine report filed through PUB
- Where
- 40 nm west (250°) of PUB
- Time
- 00:21 UTC
- Height
- at 43,000 ft
- Aircraft
- CL35
- Remarks
- mtw +/-300FT zdvwc
- B737 at 25,000 ft, 5 nm southwest, 6:29 pm MDT (00:29 UTC): light rime icing, 0 °C, remarks: during the climb ZDVWC-29. At the departure end, 5 nm southwest of the line.
as filed, and in English
COS UA /OV BRK242015/TM 0029/FL250/TP B737/SK TOP280/TA 00/IC LGT RIME/RM DURC ZDVWC-29
- Report
- a routine report filed through COS
- Where
- 15 nm southwest (242°) of BRK
- Time
- 00:29 UTC
- Height
- at 25,000 ft
- Aircraft
- B737
- Sky
- TOP280
- Temperature
- 0 °C
- Icing
- light rime
- Remarks
- during the climb ZDVWC-29
- GLF6 at 40,000 ft, 12 nm northeast, 6:48 pm MDT (00:48 UTC): light to moderate chop turbulence, remarks: ZDVWC-46. 20 nm along the route, 12 nm northeast of the line.
as filed, and in English
COS UA /OV COS340020/TM 0048/FL400/TP GLF6/TB LGT-MOD CHOP/RM ZDVWC-46
- Report
- a routine report filed through COS
- Where
- 20 nm north (340°) of COS
- Time
- 00:48 UTC
- Height
- at 40,000 ft
- Aircraft
- GLF6
- Turbulence
- light to moderate chop
- Remarks
- ZDVWC-46
- B737 at 14,000 ft, 28 nm northeast, 6:20 pm MDT (00:20 UTC): light to moderate turbulence, remarks: light to moderate from 14,000 ft to 16,000 ft occn light above 16,000 ft. 20 nm along the route, 28 nm northeast of the line.
as filed, and in English
DEN UA /OV DEN170025/TM 0020/FL140/TP B737/TB LGT-MOD/RM LGT-MOD 140-160 OCCN LGT ABOVE 160
- Report
- a routine report filed through DEN
- Where
- 25 nm south (170°) of DEN
- Time
- 00:20 UTC
- Height
- at 14,000 ft
- Aircraft
- B737
- Turbulence
- light to moderate
- Remarks
- light to moderate from 14,000 ft to 16,000 ft occn light above 16,000 ft
- E55P at 38,000 ft, 5 nm east, 7:23 pm MDT (01:23 UTC): light chop turbulence, remarks: ZDVWC-05. 30 nm along the route, 5 nm east 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
- B737 descending, 46 nm northeast, 7:23 pm MDT (01:23 UTC): no turbulence up to 10,000 ft. 40 nm along the route, 46 nm northeast 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
- A321 descending, 46 nm northeast, 6:26 pm MDT (00:26 UTC): no turbulence up to 10,000 ft. 40 nm along the route, 46 nm northeast of the line.
as filed, and in English
DEN UA /OV DEN/TM 0026/FLDURD/TP A321/TB NEG BLO 100
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 00:26 UTC
- Height
- during the descent
- Aircraft
- A321
- Turbulence
- no below 10,000 ft
- B737 at 6,500 ft, 46 nm northeast, 5:27 pm MDT (23:27 UTC): no turbulence. 40 nm along the route, 46 nm northeast of the line.
as filed, and in English
DEN UA /OV DEN/TM 2327/FL065/TP B737/TB NEG TB ON FINAL RWY17R
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 23:27 UTC
- Height
- at 6,500 ft
- Aircraft
- B737
- Turbulence
- no turbulence on final runway 17R
9 more routine reports are on the map.
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 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 3 forecast points nearest it (DEN, RKS, PIH). 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 | 190° at 31 kt | −14 kt | 16 °C | 134 kt | 3 h 16 min | 10:54 pm MDT (04:54 UTC) |
| 10,500 ft | 200° at 37 kt | −11 kt | 7 °C | 131 kt | 3 h 20 min | 10:58 pm MDT (04:58 UTC) |
| 12,500 ft | 210° at 44 kt | −8 kt | 2 °C | 128 kt | 3 h 25 min | 11:03 pm MDT (05:03 UTC) |
| 14,500 ft | 210° at 46 kt | −6 kt | -2 °C | 126 kt | 3 h 28 min | 11:06 pm MDT (05:06 UTC) |
| 16,500 ft | 210° at 48 kt | −5 kt | -6 °C | 125 kt | 3 h 30 min | 11:08 pm MDT (05:08 UTC) |
| 18,000 ft FL180 | 220° at 50 kt | −4 kt | -9 °C | 124 kt | 3 h 31 min | 11:09 pm MDT (05:09 UTC) |
| 24,000 ft FL240 | 210° at 51 kt | −6 kt | -21 °C | 126 kt | 3 h 28 min | 11:06 pm MDT (05:06 UTC) |
| 30,000 ft FL300 | 220° at 52 kt | −2 kt | -33 °C | 122 kt | 3 h 35 min | 11:13 pm MDT (05:13 UTC) |
| 34,000 ft FL340 | 230° at 65 kt | +16 kt | -37 °C | 104 kt | 4 h 12 min | 11:50 pm MDT (05:50 UTC) |
| 39,000 ft FL390 | 240° at 70 kt | +24 kt | -46 °C | 96 kt | 4 h 33 min | 12:11 am MDT (06:11 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| DEN | used from 0 nm out; 51 nm from the line | 190/31 16° | 210/32 7° | 240/41 -8° | 230/47 -21° | 240/56 -32° | 250/65 -37° | 250/61 -47° | ||
| RKS | used from 149 nm out; 87 nm from the line | 190/43 | 210/65 3° | 210/57 -9° | 210/56 -21° | 210/47 -33° | 230/63 -37° | 240/77 -46° | ||
| PIH | used from 347 nm out; 74 nm from the line | 270/10 | 270/13 1° | 210/16 -2° | 200/56 -11° | 200/51 -23° | 200/68 -33° | 220/77 -37° | 230/73 -44° |
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 7,000 feet, a broken layer at 10,000 feet, a broken layer at 17,000 feet, a broken layer at 20,000 feet | from the west-southwest (240°) at 14 knots, gusting to 25 | 10+ mi | 10,000 ft | 6,187 ft | 6:54 pm MDT (00:54 UTC) |
| GNB Granby, CO | 89 nm out, 20 nm northeast of the line | VFR | from the west (270°) at 5 knots | 10+ mi | none | 8,207 ft | 01:15 UTC |
| HDN Hayden, CO | 149 nm out, 6 nm west of the line | VFR Sky: a broken layer at 7,000 feet, a broken layer at 10,000 feet, overcast at 12,000 feet Weather: light rain | from the southwest (220°) at 16 knots, gusting to 24 | 10+ mi | 7,000 ft | 6,606 ft | 00:56 UTC |
| DWX Dixon, WY | 189 nm out, 15 nm northeast of the line | VFR Sky: scattered clouds at 5,000 feet, overcast at 6,500 feet Weather: light rain | from the south-southeast (160°) at 15 knots, gusting to 28 | 10+ mi | 6,500 ft | 6,548 ft | 01:15 UTC |
| RKS Rock Springs, WY | 258 nm out, 7 nm southwest of the line | VFR | from the south (190°) at 17 knots, gusting to 24 | 10+ mi | none | 6,764 ft | 00:54 UTC |
| BPI Big Piney, WY | 337 nm out, 10 nm northeast of the line | VFR Sky: a few clouds at 5,500 feet, scattered clouds at 7,000 feet | from the south (180°) at 13 knots | 10+ mi | none | 6,993 ft | 00:53 UTC |
| AFO Afton, WY | 367 nm out, 7 nm southwest of the line | VFR Sky: a broken layer at 7,000 feet, overcast at 8,000 feet | from the west-southwest (240°) at 7 knots | 10+ mi | 7,000 ft | 6,220 ft | 01:15 UTC |
| IDA Idaho Falls, ID | destination | IFR Sky: a broken layer at 700 feet, a broken layer at 3,200 feet, overcast at 4,000 feet Weather: light rain | from the south-southeast (150°) at 6 knots | 10+ mi | 700 ft | 4,743 ft | 7:31 pm MDT (01:31 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 IDA when you get there the forecast at the estimated arrival, 10:54 pm MDT (04:54 UTC)
Wind light and variable, visibility 6 miles, light rain showers, mist, scattered clouds at 700 feet, overcast at 1,500 feet marginal VFR
The whole forecast for IDA
- From Sun 6:00 pm MDT (00:00 UTC): wind light and variable, visibility 3 miles, rain, mist, a broken layer at 700 feet, overcast at 1,500 feet
- From Sun 8:00 pm MDT (02:00 UTC): wind light and variable, visibility 6 miles, light rain showers, mist, scattered clouds at 700 feet, overcast at 1,500 feet
- From Mon 6:00 am MDT (12:00 UTC): wind light and variable, visibility 5 miles, light rain, mist, scattered clouds at 1,000 feet, overcast at 1,500 feet
- From Mon 12:00 pm MDT (18:00 UTC): wind from the southwest at 6 knots, visibility 6 miles, light rain showers, mist, scattered clouds at 1,500 feet, overcast at 2,500 feet
The forecast for COS, the departure
- From Sun 6:00 pm MDT (00:00 UTC): wind from the south-southwest at 20 knots, gusting to 32, visibility more than 6 miles, a few clouds at 10,000 feet, scattered clouds at 20,000 feet
- From Sun 9:00 pm MDT (03:00 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
Temporary flight restrictions on the line or within 25 nm of it
- 6/8770 COLORADO SPRINGS, CO, Saturday, October 10, 2026 through Monday, October 12, 2026 UTC 1 nm from the route, 20 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 12 October · ZDV
- 6/8784 LAKE GEORGE, CO, Sunday, October 11, 2026 through Tuesday, October 13, 2026 UTC 13 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 6:25 pm MDT (00:25 UTC), at IDA 6:50 pm MDT (00:50 UTC) (civil twilight ends 7:19 pm MDT (01:19 UTC)). At 120 knots the arrival at IDA is after sunset there (6:52 pm MDT (00:52 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: City Of Colorado Springs Municipal, Idaho Falls Regional.