Luis Munoz Marin International to Nashville International SJU → BNA
1,525 nautical miles (1,754 statute miles) northwest on a straight line, true course 318°, about 329° magnetic at the departure end (variation 11W). At 120 knots that is 11 h 28 min at the quickest height in today's winds (39,000 ft, a 13-knot tailwind), arriving about 8:17 am CDT (13:17 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: 103 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 4E: thunderstorms (a convective SIGMET) up to 45,000 ft, moving from the southwest at 20 knots, until 10:55 pm AST (02:55 UTC). Over the route from 927 to 987 nm out.
as issued
WSUS31 KKCI 120055 MKCE WST 120055 CONVECTIVE SIGMET 4E VALID UNTIL 0255Z FL AND FL SC GA CSTL WTRS FROM 140ESE CHS-200SSE ILM-50NE PBI-10E TRV-140ESE CHS AREA TS MOV FROM 23020KT. TOPS ABV FL450.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1325 to 1425 nm out.
- AIRMET TANGO 5W: moderate turbulence below 18,000 ft (due to mountain wave) up to 8,000 ft. Near the route, 1375 nm along the route.
- AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Near the route, at the destination end.
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 SJU.
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 20:00–03:00 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 8 forecast points nearest it (MIA, MLB, JAX, SAV, CAE, ATL, TYS, BNA). 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 | 270° at 8 kt | +6 kt | 114 kt | 13 h 23 min | 10:12 am CDT (15:12 UTC) | |
| 6,500 ft | 290° at 10 kt | +9 kt | 15 °C | 111 kt | 13 h 44 min | 10:33 am CDT (15:33 UTC) |
| 8,500 ft | 280° at 11 kt | +8 kt | 14 °C | 112 kt | 13 h 37 min | 10:26 am CDT (15:26 UTC) |
| 10,500 ft | 280° at 12 kt | +10 kt | 11 °C | 110 kt | 13 h 52 min | 10:41 am CDT (15:41 UTC) |
| 12,500 ft | 280° at 13 kt | +11 kt | 7 °C | 109 kt | 13 h 59 min | 10:48 am CDT (15:48 UTC) |
| 14,500 ft | 260° at 14 kt | +9 kt | 2 °C | 111 kt | 13 h 44 min | 10:33 am CDT (15:33 UTC) |
| 16,500 ft | 250° at 16 kt | +7 kt | -2 °C | 113 kt | 13 h 30 min | 10:19 am CDT (15:19 UTC) |
| 18,000 ft FL180 | 240° at 17 kt | +5 kt | -5 °C | 115 kt | 13 h 16 min | 10:05 am CDT (15:05 UTC) |
| 24,000 ft FL240 | 230° at 17 kt | +1 kt | -16 °C | 119 kt | 12 h 49 min | 9:38 am CDT (14:38 UTC) |
| 30,000 ft FL300 | 220° at 19 kt | −2 kt | -31 °C | 122 kt | 12 h 30 min | 9:19 am CDT (14:19 UTC) |
| 34,000 ft FL340 | 200° at 26 kt | −12 kt | -40 °C | 132 kt | 11 h 33 min | 8:22 am CDT (13:22 UTC) |
| 39,000 ft FL390 | 190° at 24 kt | −13 kt | -52 °C | 133 kt | 11 h 28 min | 8:17 am CDT (13:17 UTC) |
Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 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; 884 nm from the line | 190/8 | L/V 18° | 180/5 14° | L/V 9° | 190/10 -5° | 160/10 -16° | 150/13 -30° | 160/26 -40° | 150/23 -52° |
| MLB | used from 747 nm out; 266 nm from the line | 240/7 | 240/11 17° | 240/13 13° | 250/15 8° | 230/25 -5° | 210/25 -16° | 210/24 -31° | 190/29 -41° | 190/27 -53° |
| JAX | used from 996 nm out; 135 nm from the line | 280/14 | 300/22 16° | 260/27 15° | 260/26 9° | 240/41 -6° | 230/38 -16° | 220/44 -32° | 200/49 -41° | 200/52 -53° |
| SAV | used from 1046 nm out; 91 nm from the line | 260/18 | 290/26 13° | 270/33 12° | 260/40 9° | 240/47 -5° | 230/53 -16° | 220/61 -31° | 210/64 -41° | 210/64 -52° |
| CAE | used from 1246 nm out; 86 nm from the line | 260/27 | 310/26 11° | 280/31 9° | 270/36 7° | 250/39 -4° | 230/57 -16° | 220/74 -30° | 220/83 -40° | 220/73 -51° |
| ATL | used from 1295 nm out; 51 nm from the line | 300/23 | 320/26 14° | 320/34 10° | 320/41 5° | 290/32 -6° | 290/31 -18° | 280/28 -33° | 260/32 -41° | 250/28 -50° |
| TYS | used from 1395 nm out; 69 nm from the line | 290/19 | 310/22 11° | 330/25 7° | 330/34 3° | 320/37 -7° | 300/37 -18° | 300/37 -34° | 280/29 -39° | 270/29 -48° |
| BNA | used from 1445 nm out; 55 nm from the line | 280/13 | 340/34 16° | 330/38 10° | 330/44 5° | 330/39 -8° | 330/38 -19° | 320/49 -34° | 330/53 -40° | 330/35 -47° |
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 |
|---|---|---|---|---|---|---|---|
| SJU San Juan, PR | departure | no report just now | 9 ft | ||||
| SAV Savannah, GA | 1166 nm out, 9 nm south of the line, tower | no report just now | 50 ft | ||||
| AHN Athens, GA | 1315 nm out, 5 nm northeast of the line, tower | no report just now | 812 ft | ||||
| CHA Chattanooga, TN | 1425 nm out, 6 nm southwest of the line, tower | no report just now | 682 ft | ||||
| BNA Nashville, TN | destination | no report just now | 599 ft |
The highest airport on this list sits at 812 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At BNA when you get there the forecast at the estimated arrival, 8:17 am CDT (13:17 UTC)
BNA has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/4508 CEIBA, PR 24 nm from the route, at the departure end · security · ZSU
- 6/0708 Goodlettsville, TN, Saturday, August 1, 2026 through Sunday, August 1, 2027 UTC 13 nm from the route, at the destination end · security · until 1 August · ZME
Daylight
Sunset at SJU 6:03 pm AST (22:03 UTC), at BNA 6:15 pm CDT (23:15 UTC) (civil twilight ends 6:40 pm CDT (23:40 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: Luis Munoz Marin International, Nashville International.