Greenville Spartanburg International to Jacksonville International GSP → JAX
266 nautical miles (306 statute miles) south on a straight line, true course 174°, about 180° magnetic at the departure end (variation 6W). At 120 knots that is 2 h at the quickest height in today's winds (6,500 ft, a 13-knot tailwind), arriving about 12:39 am EDT (04:39 UTC), after sunset at the destination. Right now GSP is VFR, wind from the southwest (230°) at 7 knots; JAX is VFR, wind from the west (260°) at 3 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: 12 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 8,000 ft. Over the first 20 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Near the route, 30 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 GSP.
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 4 forecast points nearest it (GSP, CAE, SAV, JAX). 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 17 kt | −11 kt | 131 kt | 2 h 02 min | 12:41 am EDT (04:41 UTC) | |
| 6,500 ft | 310° at 18 kt | −13 kt | 14 °C | 133 kt | 2 h | 12:39 am EDT (04:39 UTC) |
| 8,500 ft | 300° at 21 kt | −12 kt | 12 °C | 132 kt | 2 h 01 min | 12:40 am EDT (04:40 UTC) |
| 10,500 ft | 290° at 24 kt | −11 kt | 8 °C | 131 kt | 2 h 02 min | 12:41 am EDT (04:41 UTC) |
| 12,500 ft | 280° at 26 kt | −8 kt | 5 °C | 128 kt | 2 h 05 min | 12:44 am EDT (04:44 UTC) |
| 14,500 ft | 280° at 28 kt | −6 kt | 1 °C | 126 kt | 2 h 07 min | 12:46 am EDT (04:46 UTC) |
| 16,500 ft | 270° at 31 kt | −4 kt | -3 °C | 124 kt | 2 h 09 min | 12:48 am EDT (04:48 UTC) |
| 18,000 ft FL180 | 270° at 32 kt | −2 kt | -6 °C | 122 kt | 2 h 11 min | 12:50 am EDT (04:50 UTC) |
| 24,000 ft FL240 | 270° at 36 kt | −1 kt | -17 °C | 121 kt | 2 h 12 min | 12:51 am EDT (04:51 UTC) |
| 30,000 ft FL300 | 240° at 43 kt | +14 kt | -32 °C | 106 kt | 2 h 31 min | 1:10 am EDT (05:10 UTC) |
| 34,000 ft FL340 | 240° at 49 kt | +24 kt | -40 °C | 96 kt | 2 h 46 min | 1:25 am EDT (05:25 UTC) |
| 39,000 ft FL390 | 240° at 41 kt | +14 kt | -51 °C | 106 kt | 2 h 31 min | 1:10 am EDT (05:10 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| GSP | used from 0 nm out; 25 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 49 nm out; 50 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 98 nm out; 59 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° |
| JAX | used from 197 nm out; 44 nm from the line | 290/14 | 300/16 17° | 280/22 14° | 280/24 8° | 250/32 -6° | 250/37 -17° | 230/50 -31° | 220/52 -41° | 220/51 -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 |
|---|---|---|---|---|---|---|---|
| GSP Greer, SC | departure | VFR | from the southwest (230°) at 7 knots | 10+ mi | none | 963 ft | 9:53 pm EDT (01:53 UTC) |
| GRD Greenwood, SC | 39 nm out, 1 nm west of the line | VFR | from the west-southwest (240°) at 14 knots, gusting to 19 | 10+ mi | none | 631 ft | 01:56 UTC |
| AIK Aiken, SC | 79 nm out, 19 nm east of the line | VFR | from the southwest (220°) at 7 knots | 10+ mi | none | 528 ft | 02:15 UTC |
| AGS Augusta, GA | 89 nm out, 5 nm southeast of the line, tower | VFR | from the southwest (220°) at 5 knots | 10+ mi | none | 145 ft | 01:53 UTC |
| CWV Claxton, GA | 167 nm out, 4 nm north of the line | VFR | calm | 10+ mi | none | 111 ft | 02:15 UTC |
| LHW Fort Stewart (Hinesville), GA | 187 nm out, 15 nm east of the line, tower | VFR Sky: scattered clouds at 5,500 feet | calm | 10+ mi | none | 46 ft | 01:55 UTC |
| SSI St Simons Island, GA | 226 nm out, 19 nm east of the line | VFR | from the west-southwest (240°) at 3 knots | 10+ mi | none | 18 ft | 02:15 UTC |
| JAX Jacksonville, FL | destination | VFR Sky: scattered clouds at 20,000 feet | from the west (260°) at 3 knots | 10+ mi | none | 29 ft | 9:56 pm EDT (01:56 UTC) |
The highest airport on this list sits at 963 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At JAX when you get there the forecast at the estimated arrival, 12:39 am EDT (04:39 UTC)
Wind from the west at 5 knots, visibility more than 6 miles, a few clouds at 15,000 feet, scattered clouds at 25,000 feet VFR
The whole forecast for JAX
- From Sun 8:00 pm EDT (00:00 UTC): wind from the west at 5 knots, visibility more than 6 miles, a few clouds at 15,000 feet, scattered clouds at 25,000 feet
- From Mon 10:00 am EDT (14:00 UTC): wind from the northwest at 11 knots, gusting to 17, visibility more than 6 miles, a few clouds at 3,500 feet
- From Mon 6:00 pm EDT (22:00 UTC): wind from the north-northwest at 6 knots, visibility more than 6 miles, clear skies
The forecast for GSP, the departure
- From Sun 8:00 pm EDT (00:00 UTC): wind from the west-southwest at 9 knots, visibility more than 6 miles, scattered clouds at 7,000 feet
- From Mon 2:00 am EDT (06:00 UTC): wind from the west-southwest at 5 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
- From Mon 12:00 pm EDT (16:00 UTC): wind from the north-northwest at 9 knots, visibility more than 6 miles, a few clouds at 25,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/8389 Jacksonville, FL, Thursday, October 15, 2026 through Sunday, October 18, 2026 UTC 11 nm from the route, at the destination end · air shows/sports · starts Thursday 15 October · ZJX
- 6/8902 MAYPORT, FL, Tuesday, October 13, 2026 through Saturday, October 17, 2026 Local 11 nm from the route, at the destination end · security · starts tomorrow · ZJX
Daylight
Sunset at GSP 6:58 pm EDT (22:58 UTC), at JAX 6:59 pm EDT (22:59 UTC) (civil twilight ends 7:23 pm EDT (23:23 UTC)). At 120 knots the arrival at JAX is before sunrise there (7:26 am EDT (11:26 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: Greenville Spartanburg International, Jacksonville International.