Cyril E King Airport to University Of Illinois/Willard Airport STT → CMI
1,775 nautical miles (2,042 statute miles) northwest on a straight line, true course 322°, about 335° magnetic at the departure end (variation 13W). At 120 knots that is 14 h 48 min at the quickest height in today's winds (34,000 ft, no wind along the track), arriving about 3:49 pm CDT (20:49 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 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 5W: moderate turbulence below 18,000 ft (due to mountain wave) up to 10,000 ft. Over the route from 1296 to 1416 nm out.
- AIRMET TANGO 5W: moderate turbulence above 18,000 ft (due to mountain wave) from 29,000 ft to 40,000 ft. Over the route from 1356 to 1426 nm out.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1386 to 1506 nm out.
- 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 route from 1396 to 1725 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 STT.
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 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 12 forecast points nearest it (MIA, MLB, ILM, CHS, FLO, CAE, GSP, TRI, TYS, LOU, IND, SPI). 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 | 290° at 7 kt | +6 kt | 11 °C | 114 kt | 15 h 34 min | 4:35 pm CDT (21:35 UTC) |
| 6,500 ft | 290° at 8 kt | +7 kt | 14 °C | 113 kt | 15 h 42 min | 4:43 pm CDT (21:43 UTC) |
| 8,500 ft | 290° at 10 kt | +9 kt | 12 °C | 111 kt | 15 h 59 min | 5:00 pm CDT (22:00 UTC) |
| 10,500 ft | 290° at 11 kt | +10 kt | 9 °C | 110 kt | 16 h 08 min | 5:09 pm CDT (22:09 UTC) |
| 12,500 ft | 290° at 13 kt | +11 kt | 6 °C | 109 kt | 16 h 17 min | 5:18 pm CDT (22:18 UTC) |
| 14,500 ft | 280° at 15 kt | +11 kt | 1 °C | 109 kt | 16 h 17 min | 5:18 pm CDT (22:18 UTC) |
| 16,500 ft | 270° at 17 kt | +12 kt | -3 °C | 108 kt | 16 h 26 min | 5:27 pm CDT (22:27 UTC) |
| 18,000 ft FL180 | 270° at 18 kt | +12 kt | -6 °C | 108 kt | 16 h 26 min | 5:27 pm CDT (22:27 UTC) |
| 24,000 ft FL240 | 270° at 20 kt | +14 kt | -17 °C | 106 kt | 16 h 45 min | 5:46 pm CDT (22:46 UTC) |
| 30,000 ft FL300 | 250° at 17 kt | +7 kt | -32 °C | 113 kt | 15 h 42 min | 4:43 pm CDT (21:43 UTC) |
| 34,000 ft FL340 | 230° at 21 kt | 0 | -41 °C | 120 kt | 14 h 48 min | 3:49 pm CDT (20:49 UTC) |
| 39,000 ft FL390 | 240° at 25 kt | +3 kt | -51 °C | 117 kt | 15 h 10 min | 4:11 pm CDT (21:11 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| MIA | used from 0 nm out; 938 nm from the line | 150/7 | 140/5 17° | 160/5 14° | L/V 9° | 230/8 -5° | 230/8 -17° | 150/11 -32° | 150/25 -41° | 180/29 -51° |
| MLB | used from 698 nm out; 391 nm from the line | 230/6 | 230/12 17° | 240/13 12° | 240/14 7° | 240/20 -5° | 240/24 -16° | 210/21 -32° | 190/33 -41° | 200/36 -52° |
| ILM | used from 897 nm out; 271 nm from the line | 270/22 | 270/23 11° | 260/35 10° | 240/41 6° | 240/49 -5° | 240/61 -16° | 230/74 -30° | 220/79 -40° | 230/71 -51° |
| CHS | used from 947 nm out; 224 nm from the line | 280/21 | 270/23 12° | 280/28 11° | 260/35 6° | 250/41 -5° | 250/45 -16° | 230/59 -32° | 220/74 -40° | 230/67 -52° |
| FLO | used from 1196 nm out; 27 nm from the line | 300/16 | 320/14 12° | 320/19 7° | 290/26 5° | 260/39 -6° | 250/45 -18° | 230/62 -32° | 230/83 -40° | 230/64 -51° |
| CAE | used from 1246 nm out; 37 nm from the line | 330/15 | 330/13 12° | 330/22 9° | 300/26 6° | 280/33 -7° | 270/38 -18° | 250/45 -33° | 240/46 -40° | 270/38 -49° |
| GSP | used from 1296 nm out; 47 nm from the line | 320/22 | 340/19 13° | 320/18 8° | 310/24 5° | 300/34 -7° | 300/36 -18° | 290/30 -33° | 300/32 -39° | 320/42 -49° |
| TRI | used from 1396 nm out; 28 nm from the line | 330/22 11° | 330/29 7° | 330/32 3° | 330/36 -8° | 320/34 -19° | 320/36 -34° | 320/43 -39° | 320/46 -47° | |
| TYS | used from 1496 nm out; 85 nm from the line | 320/20 | 340/18 11° | 340/32 9° | 340/36 4° | 330/37 -7° | 330/38 -19° | 330/50 -34° | 330/53 -38° | 330/44 -48° |
| LOU | used from 1545 nm out; 41 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° |
| IND | used from 1645 nm out; 51 nm from the line | 290/16 | 310/20 16° | 320/21 10° | 330/13 3° | 300/25 -7° | 320/32 -19° | 330/46 -34° | 320/61 -43° | 320/63 -50° |
| SPI | used from 1745 nm out; 76 nm from the line | 220/21 | 250/23 16° | 260/27 9° | 270/14 6° | 270/23 -7° | 270/31 -19° | 270/28 -33° | 290/48 -42° | 300/55 -52° |
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 |
|---|---|---|---|---|---|---|---|
| STT Charlotte Amalie, VI | departure | no report just now | 23 ft | ||||
| FLO Florence, SC | 1236 nm out, 23 nm northeast of the line, tower | no report just now | 146 ft | ||||
| AVL Asheville, NC | 1386 nm out, 22 nm southwest of the line, tower | no report just now | 2,163 ft | ||||
| LEX Lexington, KY | 1565 nm out, 24 nm northeast of the line, tower | no report just now | 979 ft | ||||
| LOU Louisville, KY | 1615 nm out, 4 nm southeast of the line, tower | no report just now | 545 ft | ||||
| CMI Champaign/Urbana, IL | destination | no report just now | 754 ft |
The highest airport on this list sits at 2,163 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At CMI when you get there the forecast at the estimated arrival, 3:49 pm CDT (20:49 UTC)
CMI has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/2698 VIEQUES, PR, Monday, January 19, 2026 through Friday, December 18, 2026 UTC 20 nm from the route, at the departure end · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 18 December · ZSU
Daylight
Sunset at STT 5:59 pm AST (21:59 UTC), at CMI 6:18 pm CDT (23:18 UTC) (civil twilight ends 6:45 pm CDT (23:45 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: Cyril E King Airport, University Of Illinois/Willard Airport.