Louis Armstrong New Orleans International to Long Island Mac Arthur Airport MSY → ISP
1,058 nautical miles (1,217 statute miles) northeast on a straight line, true course 048°, about 049° magnetic at the departure end (variation 1W). At 120 knots that is 8 h 16 min at the quickest height in today's winds (39,000 ft, a 8-knot tailwind), arriving about 12:58 pm EDT (16:58 UTC). Right now MSY is VFR, wind calm; ISP is IFR, wind from the north-northeast (030°) at 10 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 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 10,000 ft. Over the route from 389 to 848 nm out.
- AIRMET TANGO 5W: moderate turbulence above 18,000 ft (due to mountain wave) from 29,000 ft to 40,000 ft. Over the route from 399 to 609 nm out.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 429 to 709 nm out.
- AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist, fog). Over the last 309 nm of the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 190 nm of 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 MSY.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- C560 at 13,000 ft, 25 nm northwest, 1:38 am CDT (06:38 UTC): moderate turbulence, overcast above 19,000 ft, heavy rain, remarks: during the descent. 938 nm along the route, 25 nm northwest of the line.
as filed, and in English
PHL UA /OV 20 NW PHL/TM 0638/FL130 /TP C560/SK OVC190/WX +RA/TB MOD/RM DURD
- Report
- a routine report filed through PHL
- Where
- 20 northwest phl
- Time
- 06:38 UTC
- Height
- at 13,000 ft
- Aircraft
- C560
- Sky
- overcast from 19,000 ft
- Weather
- heavy rain
- Turbulence
- moderate
- Remarks
- during the descent
- B737 at 800 ft, 10 nm northwest, 2:30 am CDT (07:30 UTC): remarks: bases 800 ft. 868 nm along the route, 10 nm northwest of the line.
as filed, and in English
BWI UA /OV BWI/TM 0730/FL008/TP B737/RM BASES 008
- Report
- a routine report filed through BWI
- Where
- over BWI
- Time
- 07:30 UTC
- Height
- at 800 ft
- Aircraft
- B737
- Remarks
- bases 800 ft
- K35R at 400 ft, 24 nm southeast, 2:45 am CDT (07:45 UTC): overcast above 40,000 ft. 908 nm along the route, 24 nm southeast of the line.
as filed, and in English
DOV UA /OV KDOV /TM 0745 /FL 004 /TP K35R /SK OVC004-TOPUNKN
- Report
- a routine report filed through DOV
- Where
- over KDOV
- Time
- 07:45 UTC
- Height
- at 400 ft
- Aircraft
- K35R
- Sky
- overcast from 400 ft, tops unknown
- B763 at 800 ft, 8 nm northwest, 12:51 am CDT (05:51 UTC): a broken layer, remarks: bases at at 80,000 ft and tops 1500. At the destination end, 8 nm northwest of the line.
as filed, and in English
JFK UA /OV JFK 2 MILES SOUTHEAST/TM 0551/FL008/TP B763/SK BKN/RM BASES AT 800 AND TOPS 1500
- Report
- a routine report filed through JFK
- Where
- jfk 2 miles southeast
- Time
- 05:51 UTC
- Height
- at 800 ft
- Aircraft
- B763
- Sky
- a broken layer
- Remarks
- bases at at 80,000 ft and tops 1500
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 11 forecast points nearest it (MSY, MOB, MGM, BHM, ATL, GSP, TRI, ROA, RIC, ACY, JFK). 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 | 330° at 20 kt | +4 kt | 116 kt | 9 h 07 min | 1:49 pm EDT (17:49 UTC) | |
| 5,500 ft | 340° at 19 kt | +5 kt | 11 °C | 115 kt | 9 h 12 min | 1:54 pm EDT (17:54 UTC) |
| 7,500 ft | 340° at 20 kt | +7 kt | 12 °C | 113 kt | 9 h 22 min | 2:04 pm EDT (18:04 UTC) |
| 9,500 ft | 340° at 21 kt | +8 kt | 8 °C | 112 kt | 9 h 27 min | 2:09 pm EDT (18:09 UTC) |
| 11,500 ft | 340° at 19 kt | +6 kt | 5 °C | 114 kt | 9 h 17 min | 1:59 pm EDT (17:59 UTC) |
| 13,500 ft | 330° at 20 kt | +4 kt | 1 °C | 116 kt | 9 h 07 min | 1:49 pm EDT (17:49 UTC) |
| 15,500 ft | 330° at 22 kt | +4 kt | -2 °C | 116 kt | 9 h 07 min | 1:49 pm EDT (17:49 UTC) |
| 17,500 ft | 330° at 24 kt | +3 kt | -6 °C | 117 kt | 9 h 03 min | 1:45 pm EDT (17:45 UTC) |
| 18,000 ft FL180 | 330° at 25 kt | +3 kt | -7 °C | 117 kt | 9 h 03 min | 1:45 pm EDT (17:45 UTC) |
| 24,000 ft FL240 | 330° at 26 kt | +4 kt | -19 °C | 116 kt | 9 h 07 min | 1:49 pm EDT (17:49 UTC) |
| 30,000 ft FL300 | 320° at 35 kt | −1 kt | -33 °C | 121 kt | 8 h 45 min | 1:27 pm EDT (17:27 UTC) |
| 34,000 ft FL340 | 320° at 36 kt | +2 kt | -40 °C | 118 kt | 8 h 58 min | 1:40 pm EDT (17:40 UTC) |
| 39,000 ft FL390 | 300° at 29 kt | −8 kt | -50 °C | 128 kt | 8 h 16 min | 12:58 pm EDT (16:58 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| MSY | used from 0 nm out; 25 nm from the line | 150/9 | 140/8 18° | L/V 13° | L/V 6° | 320/15 -5° | 310/16 -16° | 320/32 -31° | 340/35 -40° | 350/34 -52° |
| MOB | used from 50 nm out; 49 nm from the line | L/V | L/V 18° | 020/8 11° | L/V 6° | 330/12 -5° | 330/23 -17° | 330/30 -32° | 350/39 -41° | 340/40 -53° |
| MGM | used from 150 nm out; 71 nm from the line | 320/19 | 330/16 17° | 340/21 11° | 330/11 5° | 330/27 -6° | 330/21 -17° | 330/37 -32° | 340/44 -40° | 360/30 -52° |
| BHM | used from 249 nm out; 42 nm from the line | 310/19 | 310/15 16° | 320/19 11° | 330/15 5° | 330/23 -5° | 320/14 -18° | 320/36 -32° | 330/44 -40° | 340/36 -51° |
| ATL | used from 299 nm out; 53 nm from the line | 330/32 | 340/36 17° | 350/34 10° | 340/25 6° | 330/27 -6° | 350/35 -18° | 330/49 -32° | 340/47 -41° | 340/27 -51° |
| GSP | used from 449 nm out; 47 nm from the line | 340/30 | 360/24 13° | 350/29 10° | 340/33 6° | 340/40 -7° | 350/44 -19° | 340/59 -31° | 350/55 -41° | 300/29 -50° |
| TRI | used from 549 nm out; 47 nm from the line | 340/25 11° | 350/37 9° | 350/34 6° | 340/39 -7° | 340/43 -19° | 340/55 -32° | 330/58 -42° | 320/37 -50° | |
| ROA | used from 599 nm out; 53 nm from the line | 310/32 | 340/32 14° | 350/25 9° | 340/24 3° | 340/42 -8° | 340/52 -20° | 350/62 -34° | 350/64 -39° | 310/44 -48° |
| RIC | used from 748 nm out; 56 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° |
| ACY | used from 848 nm out; 89 nm from the line | 350/12 | 340/12 11° | 340/12 6° | 340/13 2° | 270/10 -10° | 240/17 -23° | 230/46 -33° | 230/46 -40° | 240/46 -49° |
| JFK | used from 998 nm out; 10 nm from the line | 020/25 | 290/9 12° | 300/12 7° | 320/14 3° | 290/17 -10° | 240/27 -21° | 240/44 -36° | 240/53 -41° | 240/51 -50° |
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 |
|---|---|---|---|---|---|---|---|
| MSY New Orleans, LA | departure | VFR Sky: a few clouds at 25,000 feet | calm | 10+ mi | none | 3 ft | 2:53 am CDT (07:53 UTC) |
| HSA Bay St Louis, MS | 50 nm out, 12 nm southeast of the line, tower | VFR | from the south-southwest (210°) at 4 knots | 10+ mi | none | 22 ft | 00:50 UTC |
| SEM Selma, AL | 220 nm out, 6 nm southeast of the line, tower | reported, no category | from the east (080°) at 27 knots, gusting to 37 | 3,300 ft | 166 ft | 01:30 UTC | |
| RYY Atlanta, GA | 379 nm out, 8 nm south of the line, tower | VFR | from the west-northwest (290°) at 6 knots | 10+ mi | none | 1,040 ft | 07:50 UTC |
| AVL Asheville, NC | 509 nm out, 4 nm southeast of the line, tower | marginal VFR Sky: a broken layer at 2,900 feet | from the north (360°) at 8 knots, gusting to 16 | 10+ mi | 2,900 ft | 2,163 ft | 08:30 UTC |
| HKY Hickory, NC | 569 nm out, 24 nm southeast of the line, tower | VFR | from the southwest (230°) at 3 knots | 10+ mi | none | 1,189 ft | 07:53 UTC |
| ROA Roanoke, VA | 679 nm out, 11 nm northwest of the line, tower | VFR Sky: a few clouds at 2,900 feet, a few clouds at 3,500 feet | from the west (280°) at 13 knots, gusting to 23 | 10+ mi | none | 1,175 ft | 07:54 UTC |
| DCA Washington, DC | 838 nm out, 5 nm north of the line, tower | marginal VFR Sky: overcast at 1,100 feet Weather: light drizzle, mist | from the north-northwest (340°) at 12 knots, gusting to 19 | 5 mi | 1,100 ft | 14 ft | 08:38 UTC |
| ILG Wilmington, DE | 928 nm out, 7 nm northwest of the line, tower | marginal VFR Sky: overcast at 1,100 feet | from the north (360°) at 11 knots | 10+ mi | 1,100 ft | 79 ft | 08:37 UTC |
| JFK New York, NY | 1028 nm out, 9 nm northwest of the line, tower | marginal VFR Sky: a broken layer at 1,000 feet, overcast at 2,100 feet | from the north-northeast (020°) at 9 knots | 10+ mi | 1,000 ft | 13 ft | 07:51 UTC |
| ISP New York, NY | destination | IFR Sky: overcast at 800 feet | from the north-northeast (030°) at 10 knots | 10+ mi | 800 ft | 98 ft | 3:56 am EDT (07:56 UTC) |
The highest airport on this list sits at 2,163 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At ISP when you get there the forecast at the estimated arrival, 12:58 pm EDT (16:58 UTC)
Wind from the north at 11 knots, visibility more than 6 miles, a broken layer at 2,500 feet marginal VFR
The whole forecast for ISP
- From Mon 5:00 am EDT (09:00 UTC): wind from the north-northeast at 12 knots, visibility 6 miles, mist, showers nearby, scattered clouds at 400 feet, overcast at 800 feet
- From Mon 8:00 am EDT (12:00 UTC): wind from the north at 12 knots, visibility more than 6 miles, a broken layer at 800 feet, overcast at 1,500 feet
- From Mon 11:00 am EDT (15:00 UTC): wind from the north at 11 knots, visibility more than 6 miles, a broken layer at 2,500 feet
- From Mon 2:00 pm EDT (18:00 UTC): wind from the north-northwest at 8 knots, visibility more than 6 miles, a few clouds at 2,500 feet, scattered clouds at 5,000 feet
- From Mon 10:00 pm EDT (02:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 5,000 feet, a few clouds at 15,000 feet
The forecast for MSY, the departure
- From Mon 1:00 am CDT (06:00 UTC): wind from the southeast at 5 knots, visibility more than 6 miles, clear skies
Temporary flight restrictions on the line or within 25 nm of it
- 4/9383 WASHINGTON, DC., USA on the route, 838 nm along the route · security · ZDC
- 6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 16 nm from the route, 838 nm along the route · a VIP movement · today · ZDC
- 6/8800 Baltimore, MD, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 13 nm from the route, 868 nm along the route · drones kept away from a public gathering · starts Saturday 17 October · ZDC
- 5/2811 NEW YORK, NY, Monday, October 20, 2025 through Tuesday, October 20, 2026 Local 19 nm from the route, at the destination end · security · until 20 October · ZNY
Daylight
Sunset at MSY 6:33 pm CDT (23:33 UTC), at ISP 6:17 pm EDT (22:17 UTC) (civil twilight ends 6:44 pm EDT (22:44 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: Louis Armstrong New Orleans International, Long Island Mac Arthur Airport.