John Glenn Columbus International to St. Louis Lambert International CMH → STL
355 nautical miles (408 statute miles) west on a straight line, true course 260°, about 267° magnetic at the departure end (variation 7W). At 120 knots that is 3 h 31 min at the quickest height in today's winds (4,500 ft, a 19-knot headwind), arriving about 1:34 pm CDT (18:34 UTC). 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: 1,347 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 SIERRA 1E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, mist). Over the first 69 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 CMH.
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 14:00–21:00 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 5 forecast points nearest it (CMH, CVG, IND, SPI, STL). 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 | 250° at 19 kt | +19 kt | 101 kt | 3 h 31 min | 1:34 pm CDT (18:34 UTC) | |
| 6,500 ft | 260° at 20 kt | +20 kt | 14 °C | 100 kt | 3 h 33 min | 1:36 pm CDT (18:36 UTC) |
| 8,500 ft | 260° at 21 kt | +21 kt | 10 °C | 99 kt | 3 h 35 min | 1:38 pm CDT (18:38 UTC) |
| 10,500 ft | 280° at 23 kt | +22 kt | 8 °C | 98 kt | 3 h 37 min | 1:40 pm CDT (18:40 UTC) |
| 12,500 ft | 290° at 26 kt | +23 kt | 4 °C | 97 kt | 3 h 40 min | 1:43 pm CDT (18:43 UTC) |
| 14,500 ft | 290° at 26 kt | +24 kt | 0 °C | 96 kt | 3 h 42 min | 1:45 pm CDT (18:45 UTC) |
| 16,500 ft | 290° at 27 kt | +24 kt | -4 °C | 96 kt | 3 h 42 min | 1:45 pm CDT (18:45 UTC) |
| 18,000 ft FL180 | 280° at 28 kt | +25 kt | -7 °C | 95 kt | 3 h 44 min | 1:47 pm CDT (18:47 UTC) |
| 24,000 ft FL240 | 280° at 38 kt | +35 kt | -20 °C | 85 kt | 4 h 11 min | 2:14 pm CDT (19:14 UTC) |
| 30,000 ft FL300 | 280° at 50 kt | +45 kt | -34 °C | 75 kt | 4 h 44 min | 2:47 pm CDT (19:47 UTC) |
| 34,000 ft FL340 | 290° at 57 kt | +49 kt | -39 °C | 71 kt | 5 h | 3:03 pm CDT (20:03 UTC) |
| 39,000 ft FL390 | 300° at 58 kt | +43 kt | -47 °C | 77 kt | 4 h 37 min | 2:40 pm CDT (19:40 UTC) |
Based on data from the 12th at 12:00 UTC; valid on the 12th at 18:00 UTC for use 14:00 to 21:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| CMH | used from 0 nm out; 25 nm from the line | 270/15 | 280/20 14° | 280/21 9° | 290/26 4° | 290/29 -7° | 290/38 -20° | 280/44 -35° | 280/48 -42° | 310/61 -48° |
| CVG | used from 49 nm out; 45 nm from the line | 260/20 | 280/18 15° | 270/19 8° | 290/30 5° | 280/31 -7° | 290/37 -19° | 280/46 -35° | 290/55 -40° | 310/57 -48° |
| IND | used from 99 nm out; 36 nm from the line | 260/18 | 250/20 15° | 260/26 9° | 290/28 5° | 290/30 -7° | 280/40 -20° | 280/46 -35° | 290/53 -38° | 300/58 -47° |
| SPI | used from 246 nm out; 67 nm from the line | 230/24 | 240/21 15° | 260/11 12° | 280/19 6° | 270/23 -8° | 280/34 -20° | 290/55 -33° | 290/62 -37° | 290/55 -47° |
| STL | used from 296 nm out; 35 nm from the line | 240/25 | 240/21 15° | 260/21 12° | 270/21 7° | 280/25 -7° | 280/39 -19° | 290/65 -31° | 290/70 -38° | 290/59 -48° |
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 |
|---|---|---|---|---|---|---|---|
| CMH Columbus, OH | departure | no report just now | 815 ft | ||||
| UYF London, OH | 30 nm out, 3 nm northeast of the line | no report just now | 1,081 ft | ||||
| DAY Dayton, OH | 59 nm out, 6 nm northwest of the line, tower | no report just now | 1,009 ft | ||||
| RID Richmond, IN | 89 nm out, 3 nm northwest of the line | no report just now | 1,139 ft | ||||
| IND Indianapolis, IN | 158 nm out, 13 nm north of the line, tower | no report just now | 796 ft | ||||
| HUF Terre Haute, IN | 207 nm out, 7 nm north of the line, tower | no report just now | 589 ft | ||||
| RSV Robinson, IL | 227 nm out, 15 nm south of the line | no report just now | 461 ft | ||||
| VLA Vandalia, IL | 296 nm out, 1 nm west of the line | no report just now | 537 ft | ||||
| ALN Alton/St Louis, IL | 335 nm out, 5 nm northwest of the line, tower | no report just now | 543 ft | ||||
| STL St Louis, MO | destination | no report just now | 617 ft |
The highest airport on this list sits at 1,139 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At STL when you get there the forecast at the estimated arrival, 1:34 pm CDT (18:34 UTC)
STL has no terminal forecast; use the nearest airport that does.
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 CMH 6:56 pm EDT (22:56 UTC), at STL 6:27 pm CDT (23:27 UTC) (civil twilight ends 6:54 pm CDT (23:54 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: John Glenn Columbus International, St. Louis Lambert International.