Plan a flight · Sun 11:03 pm EDT (03:03 UTC)

Raleigh-Durham International to Luis Munoz Marin International RDU → SJU

1,247 nautical miles (1,435 statute miles) southeast on a straight line, true course 144°, about 153° magnetic at the departure end (variation 9W). At 120 knots that is 10 h 03 min at the quickest height in today's winds (9,500 ft, a 4-knot tailwind), arriving about 9:06 am AST (13:06 UTC). Right now RDU is VFR, wind from the southwest (230°) at 11 knots; SJU is VFR, wind from the south-southeast (150°) at 4 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: 921 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 1W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 180 to 220 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 RDU.

Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first

E145 at 1,800 ft, 18 nm southwest, 8:38 pm EDT (00:38 UTC): a broken layer from 1,800 ft to 3,000 ft. 100 nm along the route, 18 nm southwest of the line.
as filed, and in English
```
ILM UA /OV ILM/TM 0038/FL018/TP E145/SK BKN018-TOP030
```
Report
a routine report filed through ILM
Where
over ILM
Time
00:38 UTC
Height
at 1,800 ft
Aircraft
E145
Sky
a broken layer from 1,800 ft, tops 3,000 ft

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 4 forecast points nearest it (RDU, ILM, 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	250° at 8 kt	−2 kt		122 kt	10 h 13 min	9:16 am AST (13:16 UTC)
5,500 ft	250° at 8 kt	−3 kt		123 kt	10 h 08 min	9:11 am AST (13:11 UTC)
7,500 ft	250° at 11 kt	−3 kt	13 °C	123 kt	10 h 08 min	9:11 am AST (13:11 UTC)
9,500 ft	250° at 15 kt	−4 kt	11 °C	124 kt	10 h 03 min	9:06 am AST (13:06 UTC)
11,500 ft	240° at 16 kt	−2 kt	9 °C	122 kt	10 h 13 min	9:16 am AST (13:16 UTC)
13,500 ft	240° at 19 kt	−2 kt	5 °C	122 kt	10 h 13 min	9:16 am AST (13:16 UTC)
15,500 ft	240° at 21 kt	−2 kt	0 °C	122 kt	10 h 13 min	9:16 am AST (13:16 UTC)
17,500 ft	240° at 24 kt	−2 kt	-4 °C	122 kt	10 h 13 min	9:16 am AST (13:16 UTC)
18,000 ft FL180	240° at 25 kt	−2 kt	-5 °C	122 kt	10 h 13 min	9:16 am AST (13:16 UTC)
24,000 ft FL240	240° at 30 kt	−2 kt	-17 °C	122 kt	10 h 13 min	9:16 am AST (13:16 UTC)
30,000 ft FL300	220° at 32 kt	+9 kt	-31 °C	111 kt	11 h 14 min	10:17 am AST (14:17 UTC)
34,000 ft FL340	200° at 40 kt	+23 kt	-41 °C	97 kt	12 h 51 min	11:54 am AST (15:54 UTC)
39,000 ft FL390	210° at 42 kt	+17 kt	-51 °C	103 kt	12 h 06 min	11:09 am AST (15:09 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
RDU	used from 0 nm out; 25 nm from the line	280/33	300/23 11°	300/28 8°	290/28 4°	260/41 -6°	240/52 -18°	230/66 -31°	230/76 -39°	240/52 -49°
ILM	used from 50 nm out; 36 nm from the line	270/22	270/23 11°	260/35 10°	240/41 6°	240/49 -5°	240/61 -16°	230/74 -30°	220/79 -40°	230/71 -51°
MLB	used from 499 nm out; 410 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 599 nm out; 460 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
RDU Raleigh/Durham, NC	departure	VFR Sky: a broken layer at 4,300 feet	from the southwest (230°) at 11 knots	10+ mi	4,300 ft	435 ft	10:51 pm EDT (02:51 UTC)
OAJ Jacksonville, NC	80 nm out, 11 nm east of the line, tower	VFR Sky: overcast at 4,100 feet	from the west-southwest (240°) at 8 knots	10+ mi	4,100 ft	92 ft	01:56 UTC
SJU San Juan, PR	destination	VFR Sky: a few clouds at 2,700 feet, scattered clouds at 4,300 feet, scattered clouds at 6,000 feet	from the south-southeast (150°) at 4 knots	10+ mi	none	9 ft	10:56 pm AST (02:56 UTC)

The highest airport on this list sits at 435 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At SJU when you get there the forecast at the estimated arrival, 9:06 am AST (13:06 UTC)

Wind from the east-southeast at 6 knots, visibility more than 6 miles, light rain showers, scattered clouds at 2,500 feet, scattered clouds at 5,000 feet VFR

The whole forecast for SJU

From Sun 10:00 pm AST (02:00 UTC): wind from the east-southeast at 6 knots, visibility more than 6 miles, light rain showers, scattered clouds at 2,500 feet, scattered clouds at 5,000 feet
From Mon 10:00 am AST (14:00 UTC): wind from the east at 11 knots, visibility more than 6 miles, showers nearby, a few clouds at 2,500 feet, scattered clouds at 4,000 feet
From Mon 1:00 pm AST (17:00 UTC): wind from the east at 13 knots, gusting to 20, visibility more than 6 miles, light rain showers, thunderstorms nearby, scattered clouds at 2,500 feet (thunderheads), a broken layer at 5,000 feet
From Mon 7:00 pm AST (23:00 UTC): wind from the east at 5 knots, visibility more than 6 miles, showers nearby, scattered clouds at 3,000 feet, scattered clouds at 6,000 feet

The forecast for RDU, the departure

From Sun 8:00 pm EDT (00:00 UTC): wind from the west-southwest at 12 knots, gusting to 21, visibility more than 6 miles, scattered clouds at 4,000 feet, a broken layer at 6,000 feet
From Mon 8:00 am EDT (12:00 UTC): wind from the west-northwest at 8 knots, visibility more than 6 miles, a broken layer at 5,000 feet
From Mon 10:00 am EDT (14:00 UTC): wind from the northwest at 9 knots, gusting to 18, visibility more than 6 miles, a broken layer at 5,000 feet

Temporary flight restrictions on the line or within 25 nm of it

6/4508 CEIBA, PR 24 nm from the route, at the destination end · security · ZSU

Daylight

Sunset at RDU 6:43 pm EDT (22:43 UTC), at SJU 6:03 pm AST (22:03 UTC) (civil twilight ends 6:25 pm AST (22:25 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

Radar now, the Southeast · loop National Weather Service

Radar now, the Caribbean · loop National Weather Service

Radar, the whole country · loop National Weather Service

Surface analysis now Weather Prediction Center

Forecast chart, 12 hours ahead Weather Prediction Center

Forecast chart, 24 hours ahead Weather Prediction Center

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: Raleigh-Durham International, Luis Munoz Marin International.