Chicago Midway International to Luis Munoz Marin International MDW → SJU
1,789 nautical miles (2,059 statute miles) southeast on a straight line, true course 135°, about 139° magnetic at the departure end (variation 4W). At 120 knots that is 13 h 27 min at the quickest height in today's winds (24,000 ft, a 13-knot tailwind), arriving about 1:05 pm AST (17:05 UTC). Right now MDW is VFR, wind from the south (190°) at 5 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: 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 9E: thunderstorms (a convective SIGMET) up to 45,000 ft, moving from the southwest at 25 knots, until 11:55 pm CDT (04:55 UTC). Near the route, 780 nm along the route.
as issued
WSUS31 KKCI 120255 MKCE WST 120255 CONVECTIVE SIGMET 9E VALID UNTIL 0455Z NC CSTL WTRS FROM 50E ECG-200E ECG-220SE ILM-140SSE ILM-50E ECG AREA TS MOV FROM 24025KT. TOPS TO FL450. REF INTL SIGMET LIMA SERIES.
- SIGMET E12E: thunderstorms (a convective SIGMET) up to 45,000 ft, moving from the west at 20 knots, until 11:55 pm CDT (04:55 UTC). Over the route from 800 to 810 nm out.
as issued
WSUS31 KKCI 120255 MKCE WST 120255 CONVECTIVE SIGMET 12E VALID UNTIL 0455Z FL GA CSTL WTRS FROM 160SSE ILM-240SSE ILM-100ENE PBI-50NE TRV-160SSE ILM AREA TS MOV FROM 26020KT. TOPS ABV FL450. REF INTL SIGMET LIMA SERIES.
- 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 route from 30 to 430 nm out.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 320 to 450 nm out.
- AIRMET TANGO 5W: moderate turbulence below 18,000 ft (due to mountain wave) up to 10,000 ft. Over the route from 410 to 510 nm out.
- AIRMET TANGO 1W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Near the route, 770 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 MDW.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- CRJ9 descending, 37 nm northeast, 8:15 pm CDT (01:15 UTC): a routine report with nothing remarked on. 190 nm along the route, 37 nm northeast of the line.
as filed, and in English
DAY UA /OV DAY/TM 0115/FLDURD/TP CRJ9/SK T031 B005
- Report
- a routine report filed through DAY
- Where
- over DAY
- Time
- 01:15 UTC
- Height
- during the descent
- Aircraft
- CRJ9
- Sky
- T031 B005
- B737 at 34,000 ft, 3 nm east, 8:08 pm CDT (01:08 UTC): light chop turbulence. 700 nm along the route, 3 nm east of the line.
as filed, and in English
ILM UA /OV ILM187076/TM 0108/FL340/TP B737/TB INTMT LGT CHOP
- Report
- a routine report filed through ILM
- Where
- 76 nm south (187°) of ILM
- Time
- 01:08 UTC
- Height
- at 34,000 ft
- Aircraft
- B737
- Turbulence
- intermittent light chop
- UAL1543 at 33,000 ft, 24 nm southwest, 9:46 pm CDT (02:46 UTC): -37 °C, wind 181° at 14 knots. 1050 nm along the route, 24 nm southwest of the line.
as filed, and in English
ARP UAL1543 2815N 7407W 0246 F330 MS37 181/014KT
- Report
- a routine report filed through ARP
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 10 forecast points nearest it (JOT, FWA, IND, CVG, CRW, TRI, FLO, 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 | 270° at 7 kt | −5 kt | 125 kt | 14 h 19 min | 1:57 pm AST (17:57 UTC) | |
| 5,500 ft | 300° at 8 kt | −8 kt | 11 °C | 128 kt | 13 h 59 min | 1:37 pm AST (17:37 UTC) |
| 7,500 ft | 300° at 10 kt | −9 kt | 13 °C | 129 kt | 13 h 52 min | 1:30 pm AST (17:30 UTC) |
| 9,500 ft | 290° at 11 kt | −9 kt | 10 °C | 129 kt | 13 h 52 min | 1:30 pm AST (17:30 UTC) |
| 11,500 ft | 280° at 12 kt | −9 kt | 7 °C | 129 kt | 13 h 52 min | 1:30 pm AST (17:30 UTC) |
| 13,500 ft | 280° at 14 kt | −10 kt | 3 °C | 130 kt | 13 h 46 min | 1:24 pm AST (17:24 UTC) |
| 15,500 ft | 270° at 16 kt | −10 kt | -1 °C | 130 kt | 13 h 46 min | 1:24 pm AST (17:24 UTC) |
| 17,500 ft | 270° at 18 kt | −11 kt | -5 °C | 131 kt | 13 h 39 min | 1:17 pm AST (17:17 UTC) |
| 18,000 ft FL180 | 270° at 19 kt | −11 kt | -6 °C | 131 kt | 13 h 39 min | 1:17 pm AST (17:17 UTC) |
| 24,000 ft FL240 | 270° at 22 kt | −13 kt | -18 °C | 133 kt | 13 h 27 min | 1:05 pm AST (17:05 UTC) |
| 30,000 ft FL300 | 250° at 19 kt | −7 kt | -32 °C | 127 kt | 14 h 05 min | 1:43 pm AST (17:43 UTC) |
| 34,000 ft FL340 | 230° at 23 kt | −1 kt | -41 °C | 121 kt | 14 h 47 min | 2:25 pm AST (18:25 UTC) |
| 39,000 ft FL390 | 240° at 28 kt | −2 kt | -50 °C | 122 kt | 14 h 40 min | 2:18 pm AST (18:18 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| JOT | used from 0 nm out; 37 nm from the line | 250/23 | 270/22 15° | 250/16 10° | 240/9 4° | 280/22 -7° | 280/29 -19° | 300/29 -34° | 290/50 -43° | 300/64 -52° |
| FWA | used from 50 nm out; 63 nm from the line | 300/17 | 320/20 16° | 330/20 10° | 340/15 3° | 310/27 -8° | 320/37 -20° | 330/52 -36° | 330/65 -43° | 330/60 -50° |
| IND | used from 100 nm out; 41 nm from the line | 290/16 | 310/20 16° | 320/21 10° | 330/13 3° | 300/25 -7° | 320/32 -19° | 330/46 -34° | 320/61 -43° | 320/63 -50° |
| CVG | used from 150 nm out; 43 nm from the line | 320/18 | 350/32 16° | 350/35 10° | 350/30 3° | 330/30 -7° | 340/44 -20° | 340/58 -35° | 330/72 -41° | 320/36 -49° |
| CRW | used from 300 nm out; 70 nm from the line | 330/20 | 330/23 11° | 340/25 8° | 340/21 2° | 340/33 -9° | 340/41 -20° | 330/42 -35° | 320/44 -39° | 320/43 -47° |
| TRI | used from 350 nm out; 47 nm from the line | 330/22 11° | 330/29 7° | 330/32 3° | 330/36 -8° | 320/34 -19° | 320/36 -34° | 320/43 -39° | 320/46 -47° | |
| FLO | used from 500 nm out; 73 nm from the line | 300/16 | 320/14 12° | 320/19 7° | 290/26 5° | 260/39 -6° | 250/45 -18° | 230/62 -32° | 230/83 -40° | 230/64 -51° |
| ILM | used from 650 nm out; 54 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 950 nm out; 328 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 1100 nm out; 409 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 |
|---|---|---|---|---|---|---|---|
| MDW Chicago, IL | departure | VFR | from the south (190°) at 5 knots | 10+ mi | none | 619 ft | 9:53 pm CDT (02:53 UTC) |
| AID Anderson, IN | 140 nm out, 1 nm southwest of the line, tower | low IFR Sky: a broken layer at 200 feet Weather: mist | calm | 0.75 mi | 200 ft | 919 ft | 03:35 UTC |
| LUK Cincinnati, OH | 220 nm out, 3 nm south of the line, tower | marginal VFR Sky: overcast at 1,900 feet | calm | 10+ mi | 1,900 ft | 481 ft | 02:53 UTC |
| VUJ Albemarle, NC | 520 nm out, 5 nm east of the line, tower | VFR | from the southwest (220°) at 4 knots | 10+ mi | none | 609 ft | 03:15 UTC |
| CRE North Myrtle Beach, SC | 640 nm out, 4 nm southwest of the line, tower | VFR | from the west-southwest (250°) at 10 knots, gusting to 19 | 10+ mi | none | 31 ft | 02:53 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 919 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, 1:05 pm AST (17:05 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 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 MDW, the departure
- From Sun 10:00 pm CDT (03:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, scattered clouds at 30,000 feet
- From Mon 12:00 pm CDT (17:00 UTC): wind from the south-southwest at 13 knots, gusting to 24, visibility more than 6 miles, a few clouds at 25,000 feet
- From Mon 6:00 pm CDT (23:00 UTC): wind from the south-southwest at 12 knots, visibility more than 6 miles, a few clouds at 12,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/8029 Cincinnati, OH, Friday, October 9, 2026 through Monday, October 12, 2026 Local 8 nm from the route, 220 nm along the route · a VIP movement · until 12 October · ZID
- 6/8713 Maxton, NC, Friday, October 16, 2026 through Sunday, October 18, 2026 UTC 5 nm from the route, 580 nm along the route · air shows/sports · starts Friday 16 October · ZDC
- 6/4508 CEIBA, PR 24 nm from the route, at the destination end · security · ZSU
Daylight
Sunset at MDW 6:14 pm CDT (23:14 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
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: Chicago Midway International, Luis Munoz Marin International.