Cyril E King Airport to Charleston Afb/Intl Airport STT → CHS
1,193 nautical miles (1,373 statute miles) northwest on a straight line, true course 320°, about 333° magnetic at the departure end (variation 13W). At 120 knots that is 10 h 22 min at the quickest height in today's winds (4,500 ft, a 5-knot headwind), arriving about 8:30 pm EDT (00:30 UTC), after sunset at the destination. Right now STT is VFR, wind from the southeast (130°) at 10 knots; CHS is VFR, wind from the northwest (310°) at 6 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: 3 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 E42E: thunderstorms (a convective SIGMET) up to 42,000 ft, until 11:55 am AST (15:55 UTC). Near the route, 895 nm along the route.
as issued
WSUS31 KKCI 121355 MKCE WST 121355 CONVECTIVE SIGMET 42E VALID UNTIL 1555Z FL CSTL WTRS FROM 160E OMN-240ENE TRV-210ENE PBI-170ENE PBI-160E OMN AREA EMBD TS MOV LTL. TOPS TO FL420. REF INTL SIGMET CHARLIE SERIES.
- AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 30,000 ft to 41,000 ft. Near the route, 1103 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
- B738 at 36,000 ft, 5 nm west, 8:23 am AST (12:23 UTC): a routine report with nothing remarked on. 50 nm along the route, 5 nm west of the line.
as filed, and in English
SJU UA /OV SJU044038/TM 1223/FL360/TP B738/SK TOPS FL400
- Report
- a routine report filed through SJU
- Where
- 38 nm northeast (044°) of SJU
- Time
- 12:23 UTC
- Height
- at 36,000 ft
- Aircraft
- B738
- Sky
- tops 40,000 ft
- B763 at 9,000 ft, 48 nm southwest, 9:06 am AST (13:06 UTC): a broken layer up to 14,000 ft. 60 nm along the route, 48 nm southwest of the line.
as filed, and in English
SJU UA /OV SJU312023/TM 1306/FL090/TP B763/SK BKN-TOP 140
- Report
- a routine report filed through SJU
- Where
- 23 nm northwest (312°) of SJU
- Time
- 13:06 UTC
- Height
- at 9,000 ft
- Aircraft
- B763
- Sky
- a broken layer, tops 14,000 ft
Winds aloft along the route, and the time en route the forecast for use 08:00–15:00 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 3 forecast points nearest it (MIA, MLB, CHS). 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 | 300° at 5 kt | +5 kt | 115 kt | 10 h 22 min | 8:30 pm EDT (00:30 UTC) | |
| 6,500 ft | 290° at 6 kt | +5 kt | 16 °C | 115 kt | 10 h 22 min | 8:30 pm EDT (00:30 UTC) |
| 8,500 ft | 310° at 6 kt | +6 kt | 13 °C | 114 kt | 10 h 28 min | 8:36 pm EDT (00:36 UTC) |
| 10,500 ft | 310° at 7 kt | +7 kt | 10 °C | 113 kt | 10 h 33 min | 8:41 pm EDT (00:41 UTC) |
| 12,500 ft | 300° at 8 kt | +7 kt | 7 °C | 113 kt | 10 h 33 min | 8:41 pm EDT (00:41 UTC) |
| 14,500 ft | 290° at 9 kt | +9 kt | 2 °C | 111 kt | 10 h 45 min | 8:53 pm EDT (00:53 UTC) |
| 16,500 ft | 290° at 11 kt | +10 kt | -2 °C | 110 kt | 10 h 51 min | 8:59 pm EDT (00:59 UTC) |
| 18,000 ft FL180 | 280° at 12 kt | +10 kt | -6 °C | 110 kt | 10 h 51 min | 8:59 pm EDT (00:59 UTC) |
| 24,000 ft FL240 | 270° at 15 kt | +10 kt | -18 °C | 110 kt | 10 h 51 min | 8:59 pm EDT (00:59 UTC) |
| 30,000 ft FL300 | 270° at 20 kt | +14 kt | -32 °C | 106 kt | 11 h 15 min | 9:23 pm EDT (01:23 UTC) |
| 34,000 ft FL340 | 280° at 25 kt | +19 kt | -41 °C | 101 kt | 11 h 49 min | 9:57 pm EDT (01:57 UTC) |
| 39,000 ft FL390 | 280° at 22 kt | +18 kt | -52 °C | 102 kt | 11 h 42 min | 9:50 pm EDT (01:50 UTC) |
Based on data from the 12th at 06:00 UTC; valid on the 12th at 12:00 UTC for use 08:00 to 15:00 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 | L/V | L/V 17° | L/V 13° | L/V 8° | 270/6 -6° | 250/9 -17° | 290/17 -32° | 280/25 -41° | 280/21 -52° |
| MLB | used from 746 nm out; 338 nm from the line | 290/10 | 260/15 18° | 290/12 13° | 280/13 8° | 250/20 -7° | 260/18 -18° | 240/17 -32° | 250/20 -41° | 250/22 -52° |
| CHS | used from 944 nm out; 224 nm from the line | 330/14 | 300/17 14° | 320/21 9° | 310/26 6° | 310/32 -6° | 280/34 -19° | 260/37 -32° | 280/30 -39° | 310/30 -50° |
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 | VFR Sky: scattered clouds at 2,900 feet, scattered clouds at 3,700 feet | from the southeast (130°) at 10 knots | 10+ mi | none | 23 ft | 9:53 am AST (13:53 UTC) |
| CHS Charleston, SC | destination | VFR | from the northwest (310°) at 6 knots | 10+ mi | none | 46 ft | 9:56 am EDT (13:56 UTC) |
The highest airport on this list sits at 46 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At CHS when you get there the forecast at the estimated arrival, 8:30 pm EDT (00:30 UTC)
Wind light and variable, visibility more than 6 miles, clear skies VFR
The whole forecast for CHS
- From Mon 8:00 am EDT (12:00 UTC): wind from the west at 5 knots, visibility more than 6 miles, clear skies
- From Mon 10:00 am EDT (14:00 UTC): wind from the north-northwest at 8 knots, visibility more than 6 miles, clear skies
- From Mon 8:00 pm EDT (00:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
The forecast for STT, the departure
- From Mon 8:00 am AST (12:00 UTC): wind from the east at 8 knots, visibility more than 6 miles, showers nearby, scattered clouds at 3,000 feet
- From Mon 9:00 am AST (13:00 UTC): wind from the east-southeast at 12 knots, visibility more than 6 miles, showers nearby, a few clouds at 2,500 feet, scattered clouds at 3,500 feet
- From Mon 6:00 pm AST (22:00 UTC): wind from the east at 7 knots, visibility more than 6 miles, showers nearby, scattered clouds at 3,000 feet
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 CHS 6:50 pm EDT (22:50 UTC) (civil twilight ends 7:15 pm EDT (23:15 UTC)). At 120 knots the arrival at CHS is after sunset there (6:50 pm EDT (22:50 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, Charleston Afb/Intl Airport.