Cyril E King Airport to St. Louis Lambert International STT → STL
1,804 nautical miles (2,076 statute miles) northwest on a straight line, true course 318°, about 331° magnetic at the departure end (variation 13W). At 120 knots that is 15 h 17 min at the quickest height in today's winds (34,000 ft, a 2-knot headwind), arriving about 4:13 pm CDT (21:13 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: 2 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 1325 to 1405 nm out.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1415 to 1465 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 1455 to 1634 nm out.
- AIRMET TANGO 5W: moderate turbulence above 18,000 ft (due to mountain wave) from 29,000 ft to 40,000 ft. Near the route, 1455 nm along 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 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 11 forecast points nearest it (MIA, MLB, CHS, SAV, CAE, GSP, TYS, BNA, EVV, CGI, 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 | 280° at 6 kt | +5 kt | 115 kt | 15 h 41 min | 4:37 pm CDT (21:37 UTC) | |
| 6,500 ft | 280° at 7 kt | +6 kt | 15 °C | 114 kt | 15 h 49 min | 4:45 pm CDT (21:45 UTC) |
| 8,500 ft | 290° at 9 kt | +8 kt | 12 °C | 112 kt | 16 h 06 min | 5:02 pm CDT (22:02 UTC) |
| 10,500 ft | 290° at 10 kt | +9 kt | 10 °C | 111 kt | 16 h 15 min | 5:11 pm CDT (22:11 UTC) |
| 12,500 ft | 290° at 11 kt | +10 kt | 6 °C | 110 kt | 16 h 24 min | 5:20 pm CDT (22:20 UTC) |
| 14,500 ft | 280° at 13 kt | +11 kt | 2 °C | 109 kt | 16 h 33 min | 5:29 pm CDT (22:29 UTC) |
| 16,500 ft | 270° at 15 kt | +11 kt | -2 °C | 109 kt | 16 h 33 min | 5:29 pm CDT (22:29 UTC) |
| 18,000 ft FL180 | 270° at 17 kt | +12 kt | -5 °C | 108 kt | 16 h 42 min | 5:38 pm CDT (22:38 UTC) |
| 24,000 ft FL240 | 270° at 18 kt | +13 kt | -17 °C | 107 kt | 16 h 52 min | 5:48 pm CDT (22:48 UTC) |
| 30,000 ft FL300 | 260° at 15 kt | +8 kt | -32 °C | 112 kt | 16 h 06 min | 5:02 pm CDT (22:02 UTC) |
| 34,000 ft FL340 | 230° at 18 kt | +2 kt | -41 °C | 118 kt | 15 h 17 min | 4:13 pm CDT (21:13 UTC) |
| 39,000 ft FL390 | 230° at 21 kt | +4 kt | -51 °C | 116 kt | 15 h 33 min | 4:29 pm CDT (21:29 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 747 nm out; 320 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° |
| CHS | used from 996 nm out; 175 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° |
| SAV | used from 1196 nm out; 37 nm from the line | 280/23 | 300/22 14° | 290/27 11° | 270/31 6° | 260/36 -5° | 260/38 -17° | 240/49 -32° | 230/68 -40° | 230/59 -51° |
| CAE | used from 1246 nm out; 52 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 1295 nm out; 68 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° |
| TYS | used from 1395 nm out; 57 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° |
| BNA | used from 1495 nm out; 53 nm from the line | 310/20 | 340/20 17° | 330/24 10° | 340/22 5° | 330/26 -6° | 340/29 -18° | 330/52 -33° | 320/62 -41° | 340/45 -50° |
| EVV | used from 1644 nm out; 45 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 1694 nm out; 52 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° |
| STL | used from 1744 nm out; 35 nm from the line | 250/24 | 250/24 16° | 260/23 9° | 270/16 6° | 260/25 -6° | 270/29 -19° | 290/34 -33° | 290/48 -41° | 290/54 -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 |
|---|---|---|---|---|---|---|---|
| STT Charlotte Amalie, VI | departure | no report just now | 23 ft | ||||
| HXD Hilton Head Island, SC | 1186 nm out, 13 nm southwest of the line, tower | no report just now | 19 ft | ||||
| AGS Augusta, GA | 1285 nm out, 3 nm south of the line, tower | no report just now | 145 ft | ||||
| BNA Nashville, TN | 1564 nm out, 21 nm southwest of the line, tower | no report just now | 599 ft | ||||
| BLV Belleville, IL | 1774 nm out, 5 nm north of the line, tower | no report just now | 459 ft | ||||
| STL St Louis, MO | destination | no report just now | 617 ft |
The highest airport on this list sits at 617 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, 4:13 pm CDT (21:13 UTC)
STL 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
- 6/0708 Goodlettsville, TN, Saturday, August 1, 2026 through Sunday, August 1, 2027 UTC 10 nm from the route, 1574 nm along the route · security · until 1 August · ZME
Daylight
Sunset at STT 5:59 pm AST (21:59 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: Cyril E King Airport, St. Louis Lambert International.