Washington Dulles International to Luis Munoz Marin International IAD → SJU
1,368 nautical miles (1,575 statute miles) southeast on a straight line, true course 151°, about 161° magnetic at the departure end (variation 10W). At 120 knots that is 10 h 08 min at the quickest height in today's winds (18,000 ft, a 15-knot tailwind), arriving about 7:18 pm AST (23:18 UTC), after sunset at the destination. Right now IAD is VFR, wind variable at 5 knots; SJU is VFR, wind from the east (090°) 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: 1,415 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 SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the first 90 nm of the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 33,000 ft. Over the first 110 nm of the route.
- AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 6,000 ft. Over the first 10 nm of the route.
- AIRMET TANGO 3W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Over the route from 40 to 60 nm out.
- AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 30,000 ft to 41,000 ft. Over the route from 120 to 260 nm out.
- AIRMET TANGO 1W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 310 to 330 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 IAD.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B783 at 5,000 ft, 30 nm northeast, 8:30 am EDT (12:30 UTC): a routine report with nothing remarked on. At the departure end, 30 nm northeast of the line.
as filed, and in English
BWI UA /OV BAL280010/TM 1230/FL50/TP B783/SK BASE 028 TOP 040
- Report
- a routine report filed through BWI
- Where
- 10 nm west (280°) of BAL
- Time
- 12:30 UTC
- Height
- at 5,000 ft
- Aircraft
- B783
- Sky
- base 2,800 ft top 4,000 ft
- SF50 at 3,000 ft, 28 nm north, 8:15 am EDT (12:15 UTC): a broken layer above 2,000 ft. At the departure end, 28 nm north of the line.
as filed, and in English
FDK UA /OV FDK/TM 1215/FL030/TP SF50/SK BKN020
- Report
- a routine report filed through FDK
- Where
- over FDK
- Time
- 12:15 UTC
- Height
- at 3,000 ft
- Aircraft
- SF50
- Sky
- a broken layer from 2,000 ft
- UAL1428 at 32,000 ft, 31 nm northwest, 7:36 am EDT (11:36 UTC): no turbulence, -39 °C, wind 360° at 59 knots. At the departure end, 31 nm northwest of the line.
as filed, and in English
ARP UAL1428 3923N 07750W 1136 F320 MS39 360/059KT TB NONE SK CLEAR IC NONE
- Report
- a routine report filed through ARP
- B39M descending, 0 nm northeast, 6:42 am EDT (10:42 UTC): overcast above 4,000 ft. At the departure end, 0 nm northeast of the line.
as filed, and in English
IAD UA /OV RWY 1R/TM 1042/FLDURD/TP B39M/SK OVC 040/WX 10 SM
- Report
- a routine report filed through IAD
- Where
- runway 1R
- Time
- 10:42 UTC
- Height
- during the descent
- Aircraft
- B39M
- Sky
- overcast from 4,000 ft
- Weather
- 10, miles
- B38M at 2,600 ft, 37 nm northeast, 9:05 am EDT (13:05 UTC): a broken layer above 2,400 ft, remarks: TOP026. At the departure end, 37 nm northeast of the line.
as filed, and in English
BWI UA /OV BAL270003/TM 1305/FL026/TP B38M/SK BKN024/RM TOP026
- Report
- a routine report filed through BWI
- Where
- 3 nm west (270°) of BAL
- Time
- 13:05 UTC
- Height
- at 2,600 ft
- Aircraft
- B38M
- Sky
- a broken layer from 2,400 ft
- Remarks
- TOP026
- E170 at 1,000 ft, 15 nm east, 7:32 am EDT (11:32 UTC): a broken layer above 1,200 ft. At the departure end, 15 nm east of the line.
as filed, and in English
DCA UA /OV DCA/TM 1132/FL010/TP E170/SK BKN012
- Report
- a routine report filed through DCA
- Where
- over DCA
- Time
- 11:32 UTC
- Height
- at 1,000 ft
- Aircraft
- E170
- Sky
- a broken layer from 1,200 ft
- B39M at 1,200 ft, 39 nm northeast, 7:10 am EDT (11:10 UTC): remarks: base 1200FT tops 2000FT. At the departure end, 39 nm northeast of the line.
as filed, and in English
BWI UA /OV BWI/TM 1110/FL012/TP B39M/RM BASE 1200FT TOPS 2000FT
- Report
- a routine report filed through BWI
- Where
- over BWI
- Time
- 11:10 UTC
- Height
- at 1,200 ft
- Aircraft
- B39M
- Remarks
- base 1200FT tops 2000FT
- B737 at 1,000 ft, 14 nm northeast, 8:40 am EDT (12:40 UTC): light chop turbulence, remarks: no bases reported on final approach runway 1. At the departure end, 14 nm northeast of the line.
as filed, and in English
DCA UA /OV DCA190003/TM 1240/FL010/TP B737/TB LGT CHOP/RM NO BASES REPORTED ON FINAL APPROACH RWY1
- Report
- a routine report filed through DCA
- Where
- 3 nm south (190°) of DCA
- Time
- 12:40 UTC
- Height
- at 1,000 ft
- Aircraft
- B737
- Turbulence
- light chop
- Remarks
- no bases reported on final approach runway 1
- A320 at 4,000 ft, 42 nm southwest, 7:03 am EDT (11:03 UTC): a broken layer above 4,000 ft, remarks: TOPS048. 80 nm along the route, 42 nm southwest of the line.
as filed, and in English
RIC UA /OV RIC270006/TM 1103/FL040/TP A320/SK BKN040/RM TOPS048
- Report
- a routine report filed through RIC
- Where
- 6 nm west (270°) of RIC
- Time
- 11:03 UTC
- Height
- at 4,000 ft
- Aircraft
- A320
- Sky
- a broken layer from 4,000 ft
- Remarks
- TOPS048
- BE36 at 2,000 ft, 44 nm southwest, 8:18 am EDT (12:18 UTC): scattered clouds above 1,000 ft; overcast above 3,500 ft. 90 nm along the route, 44 nm southwest of the line.
as filed, and in English
RIC UA /OV RIC210010/TM 1218/FL020/TP BE36/SK SCT010 OVC035
- Report
- a routine report filed through RIC
- Where
- 10 nm southwest (210°) of RIC
- Time
- 12:18 UTC
- Height
- at 2,000 ft
- Aircraft
- BE36
- Sky
- SCT010 OVC035
- C56X at 1,100 ft, 13 nm west, 8:48 am EDT (12:48 UTC): overcast above 1,100 ft, remarks: OVC011 during the descent runway 25 KPHF. 120 nm along the route, 13 nm west of the line.
as filed, and in English
PHF UA /OV KPHF/TM 1248/FL011/TP C56X/SK OVC011/RM OVC011 DURD RWY25 KPHF
- Report
- a routine report filed through PHF
- Where
- over KPHF
- Time
- 12:48 UTC
- Height
- at 1,100 ft
- Aircraft
- C56X
- Sky
- overcast from 1,100 ft
- Remarks
- OVC011 during the descent runway 25 KPHF
- PC12 at 1,000 ft, 13 nm west, 6:42 am EDT (10:42 UTC): overcast above 1,000 ft, remarks: OVC010 during the descent runway 25 KPHF. 120 nm along the route, 13 nm west of the line.
as filed, and in English
PHF UA /OV KPHF/TM 1042/FL010/TP PC12/SK OVC010/RM OVC010 DURD RWY25 KPHF
- Report
- a routine report filed through PHF
- Where
- over KPHF
- Time
- 10:42 UTC
- Height
- at 1,000 ft
- Aircraft
- PC12
- Sky
- overcast from 1,000 ft
- Remarks
- OVC010 during the descent runway 25 KPHF
- B737 at 1,200 ft, 8 nm west, 7:56 am EDT (11:56 UTC): overcast above 1,200 ft. 140 nm along the route, 8 nm west of the line.
as filed, and in English
ORF UA /OV ORF/TM 1156/FL012/TP B737/SK BASE OVC012
- Report
- a routine report filed through ORF
- Where
- over ORF
- Time
- 11:56 UTC
- Height
- at 1,200 ft
- Aircraft
- B737
- Sky
- base OVC012
- B738 at 36,000 ft, 32 nm northeast, 8:23 am EDT (12:23 UTC): a routine report with nothing remarked on. At the destination end, 32 nm northeast 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
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 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 (RIC, ORF, ILM, 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 | 310° at 12 kt | −11 kt | 131 kt | 10 h 27 min | 7:37 pm AST (23:37 UTC) | |
| 5,500 ft | 310° at 13 kt | −12 kt | 132 kt | 10 h 22 min | 7:32 pm AST (23:32 UTC) | |
| 7,500 ft | 310° at 13 kt | −12 kt | 12 °C | 132 kt | 10 h 22 min | 7:32 pm AST (23:32 UTC) |
| 9,500 ft | 310° at 14 kt | −13 kt | 9 °C | 133 kt | 10 h 17 min | 7:27 pm AST (23:27 UTC) |
| 11,500 ft | 300° at 15 kt | −13 kt | 7 °C | 133 kt | 10 h 17 min | 7:27 pm AST (23:27 UTC) |
| 13,500 ft | 300° at 17 kt | −14 kt | 2 °C | 134 kt | 10 h 13 min | 7:23 pm AST (23:23 UTC) |
| 15,500 ft | 290° at 19 kt | −14 kt | -1 °C | 134 kt | 10 h 13 min | 7:23 pm AST (23:23 UTC) |
| 17,500 ft | 290° at 22 kt | −14 kt | -6 °C | 134 kt | 10 h 13 min | 7:23 pm AST (23:23 UTC) |
| 18,000 ft FL180 | 280° at 22 kt | −15 kt | -7 °C | 135 kt | 10 h 08 min | 7:18 pm AST (23:18 UTC) |
| 24,000 ft FL240 | 270° at 24 kt | −11 kt | -18 °C | 131 kt | 10 h 27 min | 7:37 pm AST (23:37 UTC) |
| 30,000 ft FL300 | 260° at 32 kt | −11 kt | -32 °C | 131 kt | 10 h 27 min | 7:37 pm AST (23:37 UTC) |
| 34,000 ft FL340 | 260° at 36 kt | −11 kt | -40 °C | 131 kt | 10 h 27 min | 7:37 pm AST (23:37 UTC) |
| 39,000 ft FL390 | 270° at 29 kt | −14 kt | -50 °C | 134 kt | 10 h 13 min | 7:23 pm AST (23:23 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| RIC | used from 0 nm out; 65 nm from the line | 350/34 | 340/27 12° | 340/36 8° | 330/31 3° | 310/32 -9° | 320/34 -21° | 300/37 -34° | 290/37 -39° | 290/42 -46° |
| ORF | used from 100 nm out; 14 nm from the line | 310/30 | 320/27 11° | 310/30 8° | 320/30 3° | 290/36 -8° | 270/40 -21° | 250/52 -32° | 250/50 -39° | 260/42 -48° |
| ILM | used from 300 nm out; 180 nm from the line | 300/18 | 300/22 13° | 300/21 8° | 290/28 4° | 280/38 -7° | 270/40 -18° | 250/49 -32° | 250/50 -40° | 270/33 -50° |
| MIA | used from 749 nm out; 538 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° |
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 |
|---|---|---|---|---|---|---|---|
| IAD Washington, DC | departure | VFR Sky: a broken layer at 3,500 feet | variable at 5 knots | 10+ mi | 3,500 ft | 312 ft | 8:52 am EDT (12:52 UTC) |
| PHF Newport News, VA | 120 nm out, 13 nm west of the line, tower | marginal VFR Sky: a broken layer at 1,500 feet, overcast at 2,100 feet | from the northwest (310°) at 9 knots | 10+ mi | 1,500 ft | 42 ft | 13:04 UTC |
| ORF Norfolk, VA | 140 nm out, 7 nm west of the line, tower | marginal VFR Sky: overcast at 1,500 feet | from the northwest (310°) at 7 knots, gusting to 16 | 10+ mi | 1,500 ft | 26 ft | 12:51 UTC |
| SJU San Juan, PR | destination | VFR Sky: scattered clouds at 3,500 feet | from the east (090°) at 4 knots | 10+ mi | none | 9 ft | 8:56 am AST (12:56 UTC) |
The highest airport on this list sits at 312 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, 7:18 pm AST (23:18 UTC)
Wind from the east-southeast at 6 knots, visibility more than 6 miles, showers nearby, scattered clouds at 3,000 feet, scattered clouds at 6,000 feet VFR
The whole forecast for SJU
- From Mon 8:00 am AST (12:00 UTC): wind from the east at 9 knots, visibility more than 6 miles, showers nearby, scattered clouds at 3,000 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, scattered clouds at 2,500 feet, scattered clouds at 4,500 feet
- From Mon 1:00 pm AST (17:00 UTC): wind from the east-northeast at 13 knots, gusting to 20, visibility more than 6 miles, 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-southeast at 6 knots, visibility more than 6 miles, showers nearby, scattered clouds at 3,000 feet, scattered clouds at 6,000 feet
The forecast for IAD, the departure
- From Mon 8:00 am EDT (12:00 UTC): wind from the north-northwest at 10 knots, gusting to 17, visibility 6 miles, mist, scattered clouds at 1,800 feet, a broken layer at 4,500 feet
- From Mon 9:00 am EDT (13:00 UTC): wind from the north-northwest at 10 knots, gusting to 18, visibility more than 6 miles, a broken layer at 2,000 feet, a broken layer at 3,500 feet
- From Mon 12:00 pm EDT (16:00 UTC): wind from the north-northwest at 13 knots, gusting to 21, visibility more than 6 miles, scattered clouds at 2,500 feet, a broken layer at 4,000 feet
- From Mon 2:00 pm EDT (18:00 UTC): wind from the north-northwest at 11 knots, gusting to 18, visibility more than 6 miles, a broken layer at 4,500 feet
- From Mon 5:00 pm EDT (21:00 UTC): wind from the northwest at 7 knots, visibility more than 6 miles, scattered clouds at 5,000 feet
- From Mon 8:00 pm EDT (00:00 UTC): wind from the west-northwest at 3 knots, visibility more than 6 miles, a few clouds at 5,000 feet
- From Tue 10:00 am EDT (14:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 4 nm from the route, at the departure end · a VIP movement · today · ZDC
- 4/9383 WASHINGTON, DC., USA 2 nm from the route, at the departure end · security · ZDC
- 6/4508 CEIBA, PR 24 nm from the route, at the destination end · security · ZSU
Daylight
Sunset at IAD 6:36 pm EDT (22:36 UTC), at SJU 6:03 pm AST (22:03 UTC) (civil twilight ends 6:25 pm AST (22:25 UTC)). At 120 knots the arrival at SJU is after sunset there (6:03 pm AST (22:03 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: Washington Dulles International, Luis Munoz Marin International.