Gerald R Ford International to Long Island Mac Arthur Airport GRR → ISP
569 nautical miles (655 statute miles) east on a straight line, true course 098°, about 104° magnetic at the departure end (variation 6W). At 120 knots that is 3 h 31 min at the quickest height in today's winds (39,000 ft, a 42-knot tailwind), arriving about 5:31 am EDT (09:31 UTC), after sunset at the destination. 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 SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the whole route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 289 to 469 nm out.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 240 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 GRR.
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 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 6 forecast points nearest it (MKG, CLE, BUF, PSB, AVP, 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 | 280° at 8 kt | −8 kt | 128 kt | 4 h 27 min | 6:27 am EDT (10:27 UTC) | |
| 5,500 ft | 330° at 10 kt | −7 kt | 13 °C | 127 kt | 4 h 29 min | 6:29 am EDT (10:29 UTC) |
| 7,500 ft | 320° at 11 kt | −9 kt | 10 °C | 129 kt | 4 h 25 min | 6:25 am EDT (10:25 UTC) |
| 9,500 ft | 300° at 12 kt | −11 kt | 7 °C | 131 kt | 4 h 21 min | 6:21 am EDT (10:21 UTC) |
| 11,500 ft | 300° at 12 kt | −11 kt | 4 °C | 131 kt | 4 h 21 min | 6:21 am EDT (10:21 UTC) |
| 13,500 ft | 300° at 14 kt | −13 kt | 0 °C | 133 kt | 4 h 17 min | 6:17 am EDT (10:17 UTC) |
| 15,500 ft | 300° at 17 kt | −16 kt | -5 °C | 136 kt | 4 h 11 min | 6:11 am EDT (10:11 UTC) |
| 17,500 ft | 300° at 20 kt | −18 kt | -9 °C | 138 kt | 4 h 07 min | 6:07 am EDT (10:07 UTC) |
| 18,000 ft FL180 | 300° at 20 kt | −19 kt | -10 °C | 139 kt | 4 h 06 min | 6:06 am EDT (10:06 UTC) |
| 24,000 ft FL240 | 290° at 25 kt | −24 kt | -22 °C | 144 kt | 3 h 57 min | 5:57 am EDT (09:57 UTC) |
| 30,000 ft FL300 | 290° at 34 kt | −33 kt | -36 °C | 153 kt | 3 h 43 min | 5:43 am EDT (09:43 UTC) |
| 34,000 ft FL340 | 280° at 41 kt | −39 kt | -42 °C | 159 kt | 3 h 35 min | 5:35 am EDT (09:35 UTC) |
| 39,000 ft FL390 | 280° at 44 kt | −42 kt | -50 °C | 162 kt | 3 h 31 min | 5:31 am EDT (09:31 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| MKG | used from 0 nm out; 60 nm from the line | 260/22 | 290/16 15° | 300/11 10° | 290/5 3° | 300/26 -9° | 300/32 -20° | 320/48 -36° | 320/61 -45° | 310/74 -53° |
| CLE | used from 100 nm out; 78 nm from the line | 340/7 | 010/16 13° | 350/18 8° | 350/20 3° | 340/31 -10° | 340/46 -21° | 340/54 -37° | 330/62 -44° | 340/65 -49° |
| BUF | used from 250 nm out; 62 nm from the line | 320/10 | 010/16 10° | 360/10 6° | 340/13 2° | 330/22 -11° | 300/25 -23° | 320/31 -38° | 300/29 -44° | 280/36 -50° |
| PSB | used from 299 nm out; 59 nm from the line | 360/13 13° | 330/14 7° | 300/11 3° | 290/12 -11° | 240/23 -23° | 270/25 -36° | 250/34 -40° | 250/45 -48° | |
| AVP | used from 399 nm out; 22 nm from the line | 150/5 | 350/13 12° | 270/20 8° | 260/17 4° | 260/25 -11° | 240/31 -22° | 240/54 -35° | 230/61 -41° | 240/55 -49° |
| JFK | used from 499 nm out; 25 nm from the line | 250/18 | 250/23 14° | 240/33 9° | 240/33 4° | 240/38 -10° | 240/45 -21° | 230/86 -32° | 230/102 -40° | 230/84 -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 |
|---|---|---|---|---|---|---|---|
| GRR Grand Rapids, MI | departure | no report just now | 793 ft | ||||
| LAN Lansing, MI | 40 nm out, 2 nm east of the line, tower | no report just now | 860 ft | ||||
| PTK Pontiac, MI | 90 nm out, 4 nm east of the line, tower | no report just now | 980 ft | ||||
| CYQG Windsor, | 120 nm out, 17 nm south of the line | no report just now | 622 ft | ||||
| ERI Erie, PA | 240 nm out, 5 nm south of the line, tower | no report just now | 732 ft | ||||
| BFD Bradford, PA | 309 nm out, 7 nm south of the line | no report just now | 2,143 ft | ||||
| AVP Wilkes-Barre/Scranton, PA | 449 nm out, 4 nm west of the line, tower | no report just now | 961 ft | ||||
| MMU Morristown, NJ | 509 nm out, 17 nm south of the line, tower | no report just now | 186 ft | ||||
| HPN White Plains, NY | 539 nm out, 8 nm north of the line, tower | no report just now | 439 ft | ||||
| ISP New York, NY | destination | no report just now | 98 ft |
The highest airport on this list sits at 2,143 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, 5:31 am EDT (09:31 UTC)
ISP has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 5/2811 NEW YORK, NY, Monday, October 20, 2025 through Tuesday, October 20, 2026 Local 12 nm from the route, 529 nm along the route · security · until 20 October · ZNY
Daylight
Sunset at GRR 7:04 pm EDT (23:04 UTC), at ISP 6:17 pm EDT (22:17 UTC) (civil twilight ends 6:44 pm EDT (22:44 UTC)). At 120 knots the arrival at ISP is before sunrise there (7:00 am EDT (11:00 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: Gerald R Ford International, Long Island Mac Arthur Airport.