St. Louis Lambert International to Cyril E King Airport STL → STT
1,804 nautical miles (2,076 statute miles) southeast on a straight line, true course 126°, about 127° magnetic at the departure end (variation 1W). At 120 knots that is 13 h 34 min at the quickest height in today's winds (24,000 ft, a 13-knot tailwind), arriving about 5:16 pm AST (21:16 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
- SIGMET E26E: thunderstorms (a convective SIGMET) up to 32,000 ft, moving from the west at 20 knots, until 3:55 am CDT (08:55 UTC). Over the route from 787 to 857 nm out.
as issued
WSUS31 KKCI 120655 MKCE WST 120655 CONVECTIVE SIGMET 26E VALID UNTIL 0855Z FL GA CSTL WTRS FROM 170SE CHS-240SSE ILM-140ENE TRV-110E OMN-170SE CHS AREA TS MOV FROM 26020KT. TOPS TO FL320. REF INTL SIGMET LIMA SERIES.
- AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist), from 1:00 am CDT (06:00 UTC). Over the route from 169 to 349 nm out.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist), from 1:00 am CDT (06:00 UTC). Over the route from 339 to 389 nm out.
- AIRMET TANGO 5W: moderate turbulence above 18,000 ft (due to mountain wave) from 29,000 ft to 40,000 ft, from 1:00 am CDT (06:00 UTC). Near the route, 349 nm along the route.
- AIRMET TANGO 5W: moderate turbulence below 18,000 ft (due to mountain wave) up to 10,000 ft, from 1:00 am CDT (06:00 UTC). Over the route from 399 to 478 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 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 02:00–09:00 UTC · at 120 knots true airspeed
The eastbound cruising heights for this course (VFR: odd 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 (STL, CGI, EVV, BNA, TYS, GSP, CAE, SAV, CHS, MLB, MIA). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 3,500 ft | 270° at 6 kt | −5 kt | 125 kt | 14 h 26 min | 6:08 pm AST (22:08 UTC) | |
| 5,500 ft | 280° at 6 kt | −5 kt | 125 kt | 14 h 26 min | 6:08 pm AST (22:08 UTC) | |
| 7,500 ft | 280° at 7 kt | −6 kt | 14 °C | 126 kt | 14 h 19 min | 6:01 pm AST (22:01 UTC) |
| 9,500 ft | 290° at 9 kt | −8 kt | 11 °C | 128 kt | 14 h 06 min | 5:48 pm AST (21:48 UTC) |
| 11,500 ft | 290° at 10 kt | −9 kt | 8 °C | 129 kt | 13 h 59 min | 5:41 pm AST (21:41 UTC) |
| 13,500 ft | 280° at 12 kt | −10 kt | 4 °C | 130 kt | 13 h 53 min | 5:35 pm AST (21:35 UTC) |
| 15,500 ft | 270° at 14 kt | −11 kt | 0 °C | 131 kt | 13 h 46 min | 5:28 pm AST (21:28 UTC) |
| 17,500 ft | 270° at 16 kt | −12 kt | -4 °C | 132 kt | 13 h 40 min | 5:22 pm AST (21:22 UTC) |
| 18,000 ft FL180 | 270° at 17 kt | −12 kt | -5 °C | 132 kt | 13 h 40 min | 5:22 pm AST (21:22 UTC) |
| 24,000 ft FL240 | 270° at 18 kt | −13 kt | -17 °C | 133 kt | 13 h 34 min | 5:16 pm AST (21:16 UTC) |
| 30,000 ft FL300 | 250° at 14 kt | −8 kt | -32 °C | 128 kt | 14 h 06 min | 5:48 pm AST (21:48 UTC) |
| 34,000 ft FL340 | 230° at 18 kt | −1 kt | -41 °C | 121 kt | 14 h 55 min | 6:37 pm AST (22:37 UTC) |
| 39,000 ft FL390 | 230° at 22 kt | −4 kt | -51 °C | 124 kt | 14 h 33 min | 6:15 pm AST (22:15 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| STL | used from 0 nm out; 25 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° |
| CGI | used from 50 nm out; 53 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° |
| EVV | used from 100 nm out; 46 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° |
| BNA | used from 199 nm out; 24 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° |
| TYS | used from 299 nm out; 52 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° |
| GSP | used from 399 nm out; 65 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° |
| CAE | used from 498 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° |
| SAV | used from 548 nm out; 42 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° |
| CHS | used from 598 nm out; 42 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° |
| MLB | used from 797 nm out; 201 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° |
| MIA | used from 1046 nm out; 342 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° |
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 | ||||
| BLV Belleville, IL | 30 nm out, 5 nm north of the line, tower | no report just now | 459 ft | ||||
| BNA Nashville, TN | 239 nm out, 21 nm southwest of the line, tower | no report just now | 599 ft | ||||
| AGS Augusta, GA | 518 nm out, 3 nm south of the line, tower | no report just now | 145 ft | ||||
| HXD Hilton Head Island, SC | 618 nm out, 13 nm southwest of the line, tower | no report just now | 19 ft | ||||
| STT Charlotte Amalie, VI | destination | no report just now | 23 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 STT when you get there the forecast at the estimated arrival, 5:16 pm AST (21:16 UTC)
STT has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/0708 Goodlettsville, TN, Saturday, August 1, 2026 through Sunday, August 1, 2027 UTC 10 nm from the route, 229 nm along the route · security · until 1 August · ZME
- 6/2698 VIEQUES, PR, Monday, January 19, 2026 through Friday, December 18, 2026 UTC 20 nm from the route, at the destination end · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 18 December · ZSU
Daylight
Sunset at STL 6:27 pm CDT (23:27 UTC), at STT 5:59 pm AST (21:59 UTC) (civil twilight ends 6:21 pm AST (22:21 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, Cyril E King Airport.