John Glenn Columbus International to San Antonio International CMH → SAT
990 nautical miles (1,139 statute miles) southwest on a straight line, true course 235°, about 242° magnetic at the departure end (variation 7W). At 120 knots that is 8 h 37 min at the quickest height in today's winds (39,000 ft, a 5-knot headwind), arriving about 10:23 am CDT (15:23 UTC). Right now CMH is marginal VFR, wind from the north-northwest (330°) at 8 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
- AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the first 270 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
- MD83 climbing, 8 nm southeast, 1:04 am EDT (05:04 UTC): a routine report with nothing remarked on. At the departure end, 8 nm southeast of the line.
as filed, and in English
CMH UA /OV LCK/TM 0504/FLDURC/TP MD83/SK B010 T037
- Report
- a routine report filed through CMH
- Where
- over LCK
- Time
- 05:04 UTC
- Height
- during the climb
- Aircraft
- MD83
- Sky
- B010 T037
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 10 forecast points nearest it (CMH, CVG, LOU, EVV, CGI, MEM, LIT, SHV, CLL, SAT). 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 | 240° at 11 kt | +11 kt | 109 kt | 9 h 05 min | 10:51 am CDT (15:51 UTC) | |
| 6,500 ft | 260° at 11 kt | +10 kt | 16 °C | 110 kt | 9 h | 10:46 am CDT (15:46 UTC) |
| 8,500 ft | 270° at 12 kt | +10 kt | 13 °C | 110 kt | 9 h | 10:46 am CDT (15:46 UTC) |
| 10,500 ft | 280° at 12 kt | +8 kt | 9 °C | 112 kt | 8 h 50 min | 10:36 am CDT (15:36 UTC) |
| 12,500 ft | 290° at 11 kt | +6 kt | 5 °C | 114 kt | 8 h 41 min | 10:27 am CDT (15:27 UTC) |
| 14,500 ft | 290° at 13 kt | +6 kt | 1 °C | 114 kt | 8 h 41 min | 10:27 am CDT (15:27 UTC) |
| 16,500 ft | 290° at 14 kt | +7 kt | -3 °C | 113 kt | 8 h 46 min | 10:32 am CDT (15:32 UTC) |
| 18,000 ft FL180 | 290° at 15 kt | +7 kt | -6 °C | 113 kt | 8 h 46 min | 10:32 am CDT (15:32 UTC) |
| 24,000 ft FL240 | 300° at 20 kt | +7 kt | -17 °C | 113 kt | 8 h 46 min | 10:32 am CDT (15:32 UTC) |
| 30,000 ft FL300 | 310° at 35 kt | +6 kt | -31 °C | 114 kt | 8 h 41 min | 10:27 am CDT (15:27 UTC) |
| 34,000 ft FL340 | 310° at 42 kt | +8 kt | -40 °C | 112 kt | 8 h 50 min | 10:36 am CDT (15:36 UTC) |
| 39,000 ft FL390 | 310° at 39 kt | +5 kt | -51 °C | 115 kt | 8 h 37 min | 10:23 am CDT (15:23 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 | 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 | 330/15 | 340/22 14° | 340/24 9° | 340/23 4° | 340/35 -9° | 340/49 -20° | 340/58 -37° | 330/70 -42° | 340/55 -47° |
| CVG | used from 50 nm out; 25 nm from the line | 320/18 | 350/32 16° | 350/35 10° | 350/30 3° | 330/30 -7° | 340/44 -20° | 340/58 -35° | 330/72 -41° | 320/36 -49° |
| LOU | used from 150 nm out; 14 nm from the line | 310/18 | 340/28 16° | 340/29 10° | 350/27 3° | 330/27 -7° | 340/39 -19° | 330/58 -33° | 330/67 -41° | 330/40 -49° |
| EVV | used from 200 nm out; 38 nm from the line | 280/15 | 290/12 17° | 310/16 10° | 320/13 5° | 310/22 -6° | 320/26 -18° | 320/38 -33° | 310/56 -41° | 320/55 -51° |
| CGI | used from 300 nm out; 60 nm from the line | 240/20 | 270/15 15° | 280/15 11° | 300/13 6° | 290/20 -6° | 280/24 -18° | 300/34 -32° | 300/47 -41° | 310/49 -51° |
| MEM | used from 400 nm out; 43 nm from the line | 230/19 | 260/16 15° | 270/17 12° | 300/13 6° | 300/15 -5° | 300/26 -18° | 300/34 -32° | 300/41 -40° | 310/46 -52° |
| LIT | used from 500 nm out; 29 nm from the line | 220/21 | 230/17 16° | 250/24 12° | 260/15 7° | 260/13 -5° | 280/25 -16° | 290/35 -30° | 300/42 -40° | 300/40 -52° |
| SHV | used from 600 nm out; 77 nm from the line | 200/18 | 230/24 18° | 230/24 12° | 240/14 8° | 260/12 -4° | 240/11 -15° | 300/31 -29° | 300/32 -40° | 300/36 -52° |
| CLL | used from 800 nm out; 50 nm from the line | 170/22 | 170/26 18° | 200/15 14° | 240/13 8° | 240/15 -5° | 260/17 -13° | 290/27 -29° | 290/22 -40° | 320/30 -51° |
| SAT | used from 950 nm out; 20 nm from the line | 150/26 | 180/18 19° | 180/18 14° | 200/14 9° | 230/16 -6° | 210/9 -13° | 270/8 -29° | 280/6 -39° | 340/19 -51° |
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 | marginal VFR Sky: overcast at 1,400 feet | from the north-northwest (330°) at 8 knots | 10+ mi | 1,400 ft | 815 ft | 1:51 am EDT (05:51 UTC) |
| LUK Cincinnati, OH | 90 nm out, 4 nm southeast of the line, tower | low IFR Sky: sky obscured at 200 feet Weather: fog | calm | 0.5 mi | 200 ft | 481 ft | 06:39 UTC |
| CVG Covington, KY | 100 nm out, 1 nm northwest of the line, tower | VFR Sky: a few clouds at 200 feet Weather: mist | calm | 6 mi | none | 896 ft | 06:30 UTC |
| OWB Owensboro, KY | 240 nm out, 8 nm northwest of the line, tower | VFR | from the south-southeast (150°) at 3 knots | 10+ mi | none | 407 ft | 05:56 UTC |
| PAH Paducah, KY | 330 nm out, 22 nm northwest of the line, tower | VFR | calm | 10+ mi | none | 410 ft | 00:00 UTC |
| NQA Millington, TN | 430 nm out, 25 nm southeast of the line, tower | VFR | calm | 10+ mi | none | 322 ft | 23:50 UTC |
| LIT Little Rock, AR | 550 nm out, 21 nm northwest of the line, tower | VFR Sky: a few clouds at 25,000 feet | from the west (280°) at 5 knots | 10+ mi | none | 266 ft | 05:53 UTC |
| TXK Texarkana, AR | 660 nm out, 19 nm northwest of the line, tower | VFR | from the south-southwest (200°) at 8 knots | 10+ mi | none | 389 ft | 05:53 UTC |
| GGG Longview, TX | 730 nm out, 5 nm south of the line, tower | VFR | from the south (190°) at 7 knots | 10+ mi | none | 365 ft | 05:53 UTC |
| RCK Rockdale, TX | 890 nm out, 5 nm southeast of the line | no report just now | 474 ft | ||||
| AUS Austin, TX | 930 nm out, 3 nm southwest of the line, tower | VFR Sky: a few clouds at 12,000 feet, a few clouds at 25,000 feet | from the south (170°) at 4 knots | 10+ mi | none | 541 ft | 05:53 UTC |
| SAT San Antonio, TX | destination | no report just now | 809 ft |
The highest airport on this list sits at 896 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SAT when you get there the forecast at the estimated arrival, 10:23 am CDT (15:23 UTC)
SAT has no terminal forecast; use the nearest airport that does.
The forecast for CMH, the departure
- From Mon 2:00 am EDT (06:00 UTC): wind from the west-northwest at 6 knots, visibility more than 6 miles, overcast at 1,200 feet
- From Mon 4:00 am EDT (08:00 UTC): wind from the west at 4 knots, visibility 4 miles, mist, overcast at 800 feet
- At times between Mon 6:00 am EDT (10:00 UTC) and 9:00 am EDT (13:00 UTC): visibility 2 miles, mist, scattered clouds at 800 feet
- From Mon 10:00 am EDT (14:00 UTC): wind from the southwest at 9 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
- From Mon 8:00 pm EDT (00:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, a few clouds at 10,000 feet, scattered clouds at 25,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/8029 Cincinnati, OH, Friday, October 9, 2026 through Monday, October 12, 2026 Local on the route, 100 nm along the route · a VIP movement · until 12 October · ZID
Daylight
Sunset at CMH 6:56 pm EDT (22:56 UTC), at SAT 7:05 pm CDT (00:05 UTC) (civil twilight ends 7:29 pm CDT (00:29 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, San Antonio International.