Spokane International to City Of Colorado Springs Municipal GEG → COS
770 nautical miles (886 statute miles) southeast on a straight line, true course 129°, about 115° magnetic at the departure end (variation 14E). At 120 knots that is 5 h 42 min at the quickest height in today's winds (39,000 ft, a 15-knot tailwind), arriving about 1:49 am MDT (07:49 UTC), after sunset at the destination. 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 6W: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 40 knots, until 8:55 pm PDT (03:55 UTC). Near the route, at the destination end.
as issued
WSUS33 KKCI 120155 MKCW WST 120155 CONVECTIVE SIGMET 6W VALID UNTIL 0355Z CO NM FROM 50SSW DEN-30NNE TBE-50SSW CME-50E SJN-20NE DVC-50SSW DEN AREA TS MOV FROM 23040KT. TOPS TO FL340.
- AIRMET ZULU 2C: moderate icing up to 16,000 ft. Over the first 230 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 30 to 560 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 680 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 route from 130 to 410 nm out.
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 240 to 560 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 430 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 380 to 720 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 500 to 590 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 660 to 710 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 GEG.
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 8 forecast points nearest it (GEG, LWS, DLN, PIH, LND, RKS, DEN, PUB). 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 | 170° at 14 kt | +12 kt | 4 °C | 108 kt | 7 h 08 min | 3:15 am MDT (09:15 UTC) |
| 9,500 ft | 180° at 16 kt | +11 kt | 2 °C | 109 kt | 7 h 04 min | 3:11 am MDT (09:11 UTC) |
| 11,500 ft | 200° at 23 kt | +10 kt | 0 °C | 110 kt | 7 h | 3:07 am MDT (09:07 UTC) |
| 13,500 ft | 200° at 28 kt | +10 kt | -4 °C | 110 kt | 7 h | 3:07 am MDT (09:07 UTC) |
| 15,500 ft | 210° at 31 kt | +10 kt | -8 °C | 110 kt | 7 h | 3:07 am MDT (09:07 UTC) |
| 17,500 ft | 210° at 35 kt | +10 kt | -12 °C | 110 kt | 7 h | 3:07 am MDT (09:07 UTC) |
| 18,000 ft FL180 | 210° at 36 kt | +10 kt | -13 °C | 110 kt | 7 h | 3:07 am MDT (09:07 UTC) |
| 24,000 ft FL240 | 210° at 49 kt | +14 kt | -23 °C | 106 kt | 7 h 16 min | 3:23 am MDT (09:23 UTC) |
| 30,000 ft FL300 | 210° at 54 kt | +14 kt | -34 °C | 106 kt | 7 h 16 min | 3:23 am MDT (09:23 UTC) |
| 34,000 ft FL340 | 230° at 62 kt | −5 kt | -38 °C | 125 kt | 6 h 10 min | 2:17 am MDT (08:17 UTC) |
| 39,000 ft FL390 | 240° at 62 kt | −15 kt | -45 °C | 135 kt | 5 h 42 min | 1:49 am MDT (07:49 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| GEG | used from 0 nm out; 25 nm from the line | 050/18 -2° | 060/19 -8° | L/V -11° | 160/11 -24° | 190/17 -31° | 200/19 -35° | 220/14 -37° | 250/11 -41° | |
| LWS | used from 50 nm out; 46 nm from the line | 010/5 | 050/14 -2° | 040/12 -6° | 160/7 -10° | 190/30 -22° | 200/54 -27° | 200/48 -35° | 210/40 -37° | 230/32 -41° |
| DLN | used from 150 nm out; 78 nm from the line | 080/10 -3° | 180/8 -3° | 180/23 -14° | 200/58 -22° | 200/80 -36° | 220/85 -41° | 230/81 -45° | ||
| PIH | used from 350 nm out; 86 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° | |
| LND | used from 400 nm out; 56 nm from the line | 180/33 10° | 190/50 3° | 210/59 -9° | 200/50 -21° | 190/41 -34° | 230/55 -39° | 240/65 -47° | ||
| RKS | used from 500 nm out; 32 nm from the line | 190/43 | 210/65 3° | 210/57 -9° | 210/56 -21° | 210/47 -33° | 230/63 -37° | 240/77 -46° | ||
| DEN | used from 600 nm out; 108 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° | ||
| PUB | used from 750 nm out; 42 nm from the line | 210/24 16° | 210/28 8° | 230/43 -8° | 240/42 -21° | 240/77 -30° | 240/72 -36° | 250/51 -47° |
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 |
|---|---|---|---|---|---|---|---|
| GEG Spokane, WA | departure | no report just now | 2,385 ft | ||||
| SMN Salmon, ID | 210 nm out, 17 nm southwest of the line | no report just now | 4,044 ft | ||||
| JAC Jackson, WY | 370 nm out, 8 nm east of the line, tower | no report just now | 6,451 ft | ||||
| PNA Pinedale, WY | 440 nm out, 4 nm northwest of the line | no report just now | 7,096 ft | ||||
| DWX Dixon, WY | 580 nm out, 5 nm southeast of the line | no report just now | 6,548 ft | ||||
| SBS Steamboat Springs, CO | 630 nm out, 4 nm west of the line | no report just now | 6,882 ft | ||||
| COS Colorado Springs, CO | destination | no report just now | 6,187 ft |
The highest airport on this list sits at 7,096 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At COS when you get there the forecast at the estimated arrival, 1:49 am MDT (07:49 UTC)
COS has no terminal forecast; use the nearest airport that does.
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 15 nm from the route, at the destination end · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZDV
- 6/8770 COLORADO SPRINGS, CO, Saturday, October 10, 2026 through Monday, October 12, 2026 UTC 2 nm from the route, at the destination end · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 12 October · ZDV
Daylight
Sunset at GEG 6:08 pm PDT (01:08 UTC), at COS 6:25 pm MDT (00:25 UTC) (civil twilight ends 6:51 pm MDT (00:51 UTC)). At 120 knots the arrival at COS is before sunrise there (7:04 am MDT (13:04 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: Spokane International, City Of Colorado Springs Municipal.