St. Louis Lambert International to City Of Colorado Springs Municipal STL → COS
670 nautical miles (771 statute miles) west on a straight line, true course 275°, about 276° magnetic at the departure end (variation 1W). At 120 knots that is 6 h 12 min at the quickest height in today's winds (4,500 ft, a 12-knot headwind), arriving about 1:14 am MDT (07:14 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: 5 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 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 30 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 30 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 STL.
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 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 7 forecast points nearest it (STL, COU, MKC, SLN, GCK, GLD, 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 |
|---|---|---|---|---|---|---|
| 4,500 ft | 210° at 28 kt | +12 kt | 21 °C | 108 kt | 6 h 12 min | 1:14 am MDT (07:14 UTC) |
| 6,500 ft | 220° at 29 kt | +18 kt | 17 °C | 102 kt | 6 h 34 min | 1:36 am MDT (07:36 UTC) |
| 8,500 ft | 230° at 26 kt | +20 kt | 14 °C | 100 kt | 6 h 42 min | 1:44 am MDT (07:44 UTC) |
| 10,500 ft | 240° at 25 kt | +22 kt | 10 °C | 98 kt | 6 h 50 min | 1:52 am MDT (07:52 UTC) |
| 12,500 ft | 250° at 24 kt | +23 kt | 6 °C | 97 kt | 6 h 54 min | 1:56 am MDT (07:56 UTC) |
| 14,500 ft | 250° at 25 kt | +24 kt | 1 °C | 96 kt | 6 h 59 min | 2:01 am MDT (08:01 UTC) |
| 16,500 ft | 250° at 26 kt | +26 kt | -3 °C | 94 kt | 7 h 08 min | 2:10 am MDT (08:10 UTC) |
| 18,000 ft FL180 | 260° at 27 kt | +27 kt | -7 °C | 93 kt | 7 h 12 min | 2:14 am MDT (08:14 UTC) |
| 24,000 ft FL240 | 250° at 27 kt | +26 kt | -18 °C | 94 kt | 7 h 08 min | 2:10 am MDT (08:10 UTC) |
| 30,000 ft FL300 | 260° at 43 kt | +43 kt | -31 °C | 77 kt | 8 h 42 min | 3:44 am MDT (09:44 UTC) |
| 34,000 ft FL340 | 260° at 47 kt | +48 kt | -40 °C | 72 kt | 9 h 18 min | 4:20 am MDT (10:20 UTC) |
| 39,000 ft FL390 | 270° at 51 kt | +52 kt | -50 °C | 68 kt | 9 h 51 min | 4:53 am MDT (10:53 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| STL | used from 0 nm out; 25 nm from the line | 210/13 | 260/16 17° | 270/21 10° | 280/24 5° | 310/20 -7° | 320/22 -18° | 320/44 -33° | 320/59 -43° | 310/69 -51° |
| COU | used from 49 nm out; 13 nm from the line | 210/16 | 220/19 15° | 240/33 10° | 250/29 7° | 280/21 -6° | 280/19 -18° | 300/34 -31° | 300/40 -42° | 300/60 -52° |
| MKC | used from 148 nm out; 28 nm from the line | 200/28 | 220/30 16° | 270/20 11° | 280/22 7° | 260/27 -6° | 270/27 -18° | 280/38 -32° | 270/38 -40° | 280/50 -52° |
| SLN | used from 246 nm out; 71 nm from the line | 190/37 | 220/39 20° | 240/31 14° | 250/24 7° | 260/25 -7° | 250/26 -17° | 250/44 -31° | 260/47 -40° | 260/47 -50° |
| GCK | used from 443 nm out; 65 nm from the line | 200/35 21° | 220/34 14° | 240/30 8° | 240/27 -6° | 240/31 -17° | 240/53 -30° | 250/55 -39° | 250/60 -50° | |
| GLD | used from 493 nm out; 28 nm from the line | 190/29 | 200/30 15° | 240/23 8° | 250/39 -7° | 230/39 -19° | 230/57 -31° | 240/67 -39° | 250/62 -49° | |
| PUB | used from 591 nm out; 57 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 |
|---|---|---|---|---|---|---|---|
| STL St Louis, MO | departure | no report just now | 617 ft | ||||
| FYG Washington, MO | 30 nm out, 12 nm south of the line | no report just now | 487 ft | ||||
| COU Columbia, MO | 89 nm out, 3 nm southeast of the line, tower | no report just now | 889 ft | ||||
| MKC Kansas City, MO | 197 nm out, 11 nm north of the line, tower | no report just now | 756 ft | ||||
| FOE Topeka, KS | 246 nm out, 2 nm southwest of the line, tower | no report just now | 1,077 ft | ||||
| MHK Manhattan, KS | 296 nm out, 9 nm north of the line, tower | no report just now | 1,066 ft | ||||
| SLN Salina, KS | 345 nm out, 13 nm south of the line, tower | no report just now | 1,288 ft | ||||
| HYS Hays, KS | 414 nm out, 9 nm south of the line | no report just now | 1,999 ft | ||||
| OEL Oakley, KS | 493 nm out, 10 nm northeast of the line | no report just now | 3,045 ft | ||||
| ITR Burlington, CO | 552 nm out, 20 nm north of the line | no report just now | 4,218 ft | ||||
| LIC Limon, CO | 621 nm out, 25 nm north of the line | no report just now | 5,374 ft | ||||
| COS Colorado Springs, CO | destination | no report just now | 6,187 ft |
The highest airport on this list sits at 6,187 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, 1:14 am MDT (07:14 UTC)
COS has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/7634 CENTRALIA, MO, Monday, October 12, 2026 UTC 17 nm from the route, 89 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · today · ZKC
- 6/8770 COLORADO SPRINGS, CO, Saturday, October 10, 2026 through Monday, October 12, 2026 UTC 15 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 STL 6:27 pm CDT (23:27 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: St. Louis Lambert International, City Of Colorado Springs Municipal.