Long Island Mac Arthur Airport to Denver International ISP → DEN
1,438 nautical miles (1,655 statute miles) west on a straight line, true course 278°, about 292° magnetic at the departure end (variation 14W). At 120 knots that is 14 h 23 min at the quickest height in today's winds (4,500 ft, a 20-knot headwind), arriving about 11:04 pm MDT (05:04 UTC), after sunset at the destination. Right now ISP is VFR, wind from the north (360°) at 10 knots; DEN is VFR, wind from the southwest (220°) at 7 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 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 40 nm of the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 40,000 ft. Over the first 50 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 120 to 300 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). Over the route from 200 to 390 nm out.
- AIRMET TANGO 2W: 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 959 to 1089 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the last 100 nm of the route.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the last 0 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 ISP.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- urgent C172 at 6,700 ft, 19 nm southwest, 8:54 am EDT (12:54 UTC): remarks: low-level wind shear + 10 knots during the climb. At the destination end, 19 nm southwest of the line.
as filed, and in English
APA UUA /OV KAPA/TM 1254/FL067/TP C172/RM LLWS +/- 10 KTS DURC
- Report
- an urgent report filed through APA
- Where
- over KAPA
- Time
- 12:54 UTC
- Height
- at 6,700 ft
- Aircraft
- C172
- Remarks
- low-level wind shear + 10 knots during the climb
- urgent FA7X at 6,800 ft, 19 nm southwest, 8:40 am EDT (12:40 UTC): remarks: low-level wind shear a 40-knot loss of airspeed knots during the climb runway 35R. At the destination end, 19 nm southwest of the line.
as filed, and in English
APA UUA /OV KAPA/TM 1240/FL068/TP FA7X/RM LLWS -40 KTS DURC RY 35R
- Report
- an urgent report filed through APA
- Where
- over KAPA
- Time
- 12:40 UTC
- Height
- at 6,800 ft
- Aircraft
- FA7X
- Remarks
- low-level wind shear a 40-knot loss of airspeed knots during the climb runway 35R
- urgent TBM7 at 100 ft, 20 nm southwest, 8:30 am EDT (12:30 UTC): light chop turbulence, remarks: low-level wind shear a 10-knot loss of airspeed. At the destination end, 20 nm southwest of the line.
as filed, and in English
APA UUA /OV APA140001/TM 1230/FL001/TP TBM7/TB LGT CHOP/RM LLWS +-10KTS
- Report
- an urgent report filed through APA
- Where
- 1 nm southeast (140°) of APA
- Time
- 12:30 UTC
- Height
- at 100 ft
- Aircraft
- TBM7
- Turbulence
- light chop
- Remarks
- low-level wind shear a 10-knot loss of airspeed
- B38M at 12,000 ft, 12 nm southeast, 10:07 am EDT (14:07 UTC): moderate turbulence, remarks: from 11,000 ft to 12,000 ft. At the destination end, 12 nm southeast of the line.
as filed, and in English
DEN UA /OV DEN090025/TM 1407/FL120/TP B38M/TB MOD/RM 110-120
- Report
- a routine report filed through DEN
- Where
- 25 nm east (090°) of DEN
- Time
- 14:07 UTC
- Height
- at 12,000 ft
- Aircraft
- B38M
- Turbulence
- moderate
- Remarks
- from 11,000 ft to 12,000 ft
- B737 at 21,000 ft, 22 nm northwest, 10:05 am EDT (14:05 UTC): moderate turbulence, remarks: mountain wave a 30-knot gain of airspeed from 25,000 ft to 15,000 ft during the descent. At the destination end, 22 nm northwest of the line.
as filed, and in English
DEN UA /OV DEN310025/TM 1405/FL210/TP B737/TB MOD TURB/RM MTN WAVE +30KTS 250-150 DURD
- Report
- a routine report filed through DEN
- Where
- 25 nm northwest (310°) of DEN
- Time
- 14:05 UTC
- Height
- at 21,000 ft
- Aircraft
- B737
- Turbulence
- moderate turbulence
- Remarks
- mountain wave a 30-knot gain of airspeed from 25,000 ft to 15,000 ft during the descent
- B738 descending, 37 nm northwest, 9:01 am EDT (13:01 UTC): moderate turbulence from 11,000 ft to 20,000 ft. At the destination end, 37 nm northwest of the line.
as filed, and in English
DEN UA /OV 40NW DEN/TM 1301/FLDURD/TP B738/TB MOD 200-110
- Report
- a routine report filed through DEN
- Where
- 40NW den
- Time
- 13:01 UTC
- Height
- during the descent
- Aircraft
- B738
- Turbulence
- moderate from 20,000 ft to 11,000 ft
- B738 descending, 41 nm southwest, 8:55 am EDT (12:55 UTC): moderate turbulence from 16,000 ft to 20,000 ft. At the destination end, 41 nm southwest of the line.
as filed, and in English
DEN UA /OV 40SW DEN/TM 1255/FLDURD/TP B738/TB MOD 200-160
- Report
- a routine report filed through DEN
- Where
- 40SW den
- Time
- 12:55 UTC
- Height
- during the descent
- Aircraft
- B738
- Turbulence
- moderate from 20,000 ft to 16,000 ft
- C172 at 200 ft, 18 nm southwest, 8:35 am EDT (12:35 UTC): moderate turbulence, remarks: low-level wind shear a 15-knot loss of airspeed. At the destination end, 18 nm southwest of the line.
as filed, and in English
APA UA /OV APA350001/TM 1235/FL002/TP C172/TB MOD TURB/RM LLWS +-15KTS
- Report
- a routine report filed through APA
- Where
- 1 nm north (350°) of APA
- Time
- 12:35 UTC
- Height
- at 200 ft
- Aircraft
- C172
- Turbulence
- moderate turbulence
- Remarks
- low-level wind shear a 15-knot loss of airspeed
- B737 at 16,000 ft, 37 nm northwest, 8:23 am EDT (12:23 UTC): moderate turbulence, remarks: during the descent. At the destination end, 37 nm northwest of the line.
as filed, and in English
DEN UA /OV DEN320040/TM 1223/FL160/TP B737/TB MOD/RM DURD
- Report
- a routine report filed through DEN
- Where
- 40 nm northwest (320°) of DEN
- Time
- 12:23 UTC
- Height
- at 16,000 ft
- Aircraft
- B737
- Turbulence
- moderate
- Remarks
- during the descent
- PC12 at 5,400 ft, 22 nm north, 10:31 am EDT (14:31 UTC): no turbulence, vmc, remarks: smooth ride. At the departure end, 22 nm north of the line.
as filed, and in English
BDR UA /OV KBDR/TM 1431/FL054/TP PC12/SK VMC/TB NEG/RM SMOOTH RIDE
- Report
- a routine report filed through BDR
- Where
- over KBDR
- Time
- 14:31 UTC
- Height
- at 5,400 ft
- Aircraft
- PC12
- Sky
- visual conditions
- Turbulence
- none
- Remarks
- smooth ride
- BCS3 , 0 nm southwest, 10:14 am EDT (14:14 UTC): remarks: bases 1,500 ft + 5 knots ils runway 6. At the departure end, 0 nm southwest of the line.
as filed, and in English
ISP UA /OV KISP/TM 1414/FL-1-/TP BCS3/RM BASES 015 +/- 5KTS ILS RWY 6
- Report
- a routine report filed through ISP
- Where
- over KISP
- Time
- 14:14 UTC
- Height
- at -1-
- Aircraft
- BCS3
- Remarks
- bases 1,500 ft + 5 knots ils runway 6
- M700 at 4,000 ft, 22 nm north, 9:54 am EDT (13:54 UTC): no turbulence, vmc. At the departure end, 22 nm north of the line.
as filed, and in English
BDR UA /OV BDR/TM 1354/FL040/TP M700/SK VMC/TB SMOOTH
- Report
- a routine report filed through BDR
- Where
- over BDR
- Time
- 13:54 UTC
- Height
- at 4,000 ft
- Aircraft
- M700
- Sky
- visual conditions
- Turbulence
- smooth
- B738 descending, 0 nm southwest, 9:02 am EDT (13:02 UTC): remarks: bases 900 ft. At the departure end, 0 nm southwest of the line.
as filed, and in English
ISP UA /OV ISP/TM 1302/FLDURD/TP B738/RM BASES 009
- Report
- a routine report filed through ISP
- Where
- over ISP
- Time
- 13:02 UTC
- Height
- during the descent
- Aircraft
- B738
- Remarks
- bases 900 ft
- C68A at 3,200 ft, 0 nm southwest, 8:23 am EDT (12:23 UTC): remarks: dur C. At the departure end, 0 nm southwest of the line.
as filed, and in English
ISP UA /OV 060005/TM 1223/FL032/TP C68A/SK BASES 007 / TOPS 025/RM DUR C
- Report
- a routine report filed through ISP
- Where
- wind from 060° at 5 knots
- Time
- 12:23 UTC
- Height
- at 3,200 ft
- Aircraft
- C68A
- Sky
- bases 700 ft; tops 2,500 ft
- Remarks
- dur C
16 more routine reports are on the map.
Winds aloft along the route, and the time en route the forecast for use 14:00–21:00 UTC · at 120 knots true airspeed
The westbound cruising heights for this course (VFR: even thousands plus 500 ft; above 18,000 ft the forecast levels), with the wind averaged along the line from the 13 forecast points nearest it (JFK, AVP, PSB, AGC, CLE, FWA, JOT, BRL, DSM, OMA, GRI, GLD, DEN). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 4,500 ft | 260° at 19 kt | +20 kt | 17 °C | 100 kt | 14 h 23 min | 11:04 pm MDT (05:04 UTC) |
| 6,500 ft | 270° at 20 kt | +21 kt | 15 °C | 99 kt | 14 h 32 min | 11:13 pm MDT (05:13 UTC) |
| 8,500 ft | 260° at 20 kt | +21 kt | 11 °C | 99 kt | 14 h 32 min | 11:13 pm MDT (05:13 UTC) |
| 10,500 ft | 270° at 21 kt | +23 kt | 8 °C | 97 kt | 14 h 49 min | 11:30 pm MDT (05:30 UTC) |
| 12,500 ft | 270° at 23 kt | +25 kt | 4 °C | 95 kt | 15 h 08 min | 11:49 pm MDT (05:49 UTC) |
| 14,500 ft | 270° at 24 kt | +26 kt | 0 °C | 94 kt | 15 h 18 min | 11:59 pm MDT (05:59 UTC) |
| 16,500 ft | 270° at 25 kt | +27 kt | -5 °C | 93 kt | 15 h 28 min | 12:09 am MDT (06:09 UTC) |
| 18,000 ft FL180 | 270° at 26 kt | +28 kt | -8 °C | 92 kt | 15 h 38 min | 12:19 am MDT (06:19 UTC) |
| 24,000 ft FL240 | 270° at 34 kt | +36 kt | -21 °C | 84 kt | 17 h 07 min | 1:48 am MDT (07:48 UTC) |
| 30,000 ft FL300 | 270° at 47 kt | +49 kt | -33 °C | 71 kt | 20 h 15 min | 4:56 am MDT (10:56 UTC) |
| 34,000 ft FL340 | 280° at 57 kt | +58 kt | -40 °C | 62 kt | 23 h 12 min | 7:53 am MDT (13:53 UTC) |
| 39,000 ft FL390 | 280° at 57 kt | +58 kt | -48 °C | 62 kt | 23 h 12 min | 7:53 am MDT (13:53 UTC) |
Based on data from the 12th at 12:00 UTC; valid on the 12th at 18:00 UTC for use 14:00 to 21:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| JFK | used from 0 nm out; 14 nm from the line | 360/20 | 340/23 11° | 340/26 8° | 350/26 3° | 350/30 -8° | 350/36 -21° | 350/52 -36° | 350/54 -44° | 320/45 -53° |
| AVP | used from 100 nm out; 17 nm from the line | 330/21 | 340/24 14° | 350/27 9° | 350/25 3° | 330/29 -8° | 310/31 -20° | 330/41 -36° | 330/57 -46° | 320/55 -51° |
| PSB | used from 150 nm out; 55 nm from the line | 330/23 14° | 340/24 9° | 340/25 3° | 320/24 -8° | 300/29 -20° | 310/39 -36° | 310/52 -46° | 310/56 -50° | |
| AGC | used from 300 nm out; 61 nm from the line | 270/15 | 320/17 14° | 320/22 9° | 340/23 4° | 310/25 -8° | 290/30 -19° | 280/40 -36° | 290/49 -45° | 300/53 -49° |
| CLE | used from 350 nm out; 23 nm from the line | 280/17 | 270/17 14° | 280/22 10° | 290/26 4° | 290/25 -8° | 280/31 -21° | 280/35 -36° | 280/43 -44° | 300/53 -48° |
| FWA | used from 499 nm out; 38 nm from the line | 250/18 | 260/22 15° | 260/27 7° | 290/26 6° | 290/28 -8° | 290/39 -20° | 280/36 -37° | 290/54 -39° | 310/60 -48° |
| JOT | used from 599 nm out; 58 nm from the line | 230/30 | 250/26 16° | 270/27 11° | 280/34 5° | 290/32 -8° | 280/37 -21° | 280/40 -36° | 290/46 -37° | 290/56 -47° |
| BRL | used from 749 nm out; 54 nm from the line | 240/28 | 240/25 18° | 250/26 12° | 260/29 5° | 260/24 -8° | 270/36 -20° | 280/57 -33° | 290/65 -37° | 290/54 -46° |
| DSM | used from 849 nm out; 58 nm from the line | 230/34 | 230/32 20° | 220/33 12° | 240/35 5° | 250/39 -7° | 250/43 -21° | 280/61 -31° | 280/73 -37° | 280/67 -47° |
| OMA | used from 999 nm out; 19 nm from the line | 210/23 | 240/34 20° | 230/40 14° | 220/43 7° | 240/38 -8° | 250/47 -21° | 270/70 -29° | 270/79 -36° | 270/68 -48° |
| GRI | used from 1099 nm out; 21 nm from the line | 270/26 19° | 230/33 13° | 230/39 8° | 230/43 -9° | 240/55 -21° | 250/76 -28° | 260/84 -36° | 260/68 -47° | |
| GLD | used from 1249 nm out; 67 nm from the line | 240/22 | 250/24 13° | 250/39 6° | 230/42 -8° | 230/55 -21° | 240/87 -30° | 240/96 -36° | 250/93 -48° | |
| DEN | used from 1348 nm out; 65 nm from the line | 230/7 11° | 230/13 4° | 230/40 -9° | 230/48 -20° | 240/66 -32° | 240/88 -38° | 230/100 -47° |
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 |
|---|---|---|---|---|---|---|---|
| ISP New York, NY | departure | VFR Sky: scattered clouds at 1,300 feet, scattered clouds at 3,300 feet, scattered clouds at 20,000 feet | from the north (360°) at 10 knots | 10+ mi | none | 98 ft | 10:19 am EDT (14:19 UTC) |
| TEB Teterboro, NJ | 40 nm out, 5 nm southwest of the line, tower | VFR Sky: a few clouds at 1,000 feet, a broken layer at 3,600 feet | from the north-northeast (020°) at 10 knots | 10+ mi | 3,600 ft | 8 ft | 13:51 UTC |
| IPT Williamsport, PA | 180 nm out, 7 nm northeast of the line, tower | marginal VFR Sky: a broken layer at 2,200 feet, overcast at 3,800 feet | from the west (270°) at 8 knots | 10+ mi | 2,200 ft | 528 ft | 13:54 UTC |
| CLE Cleveland, OH | 400 nm out, 2 nm east of the line, tower | marginal VFR Sky: overcast at 1,200 feet | from the west-southwest (240°) at 9 knots | 10+ mi | 1,200 ft | 799 ft | 13:51 UTC |
| TOL Toledo, OH | 489 nm out, 9 nm northeast of the line, tower | low IFR Sky: overcast at 300 feet Weather: mist | from the south (190°) at 5 knots | 2 mi | 300 ft | 683 ft | 13:52 UTC |
| LOT Chicago/Romeoville, IL | 679 nm out, 10 nm north of the line, tower | VFR | from the south (190°) at 5 knots | 10+ mi | none | 679 ft | 13:45 UTC |
| MLI Moline, IL | 789 nm out, 6 nm north of the line, tower | VFR | from the south-southwest (210°) at 8 knots | 10+ mi | none | 589 ft | 13:52 UTC |
| DSM Des Moines, IA | 929 nm out, 21 nm north of the line, tower | VFR Sky: a few clouds at 10,000 feet, a few clouds at 20,000 feet, scattered clouds at 25,000 feet | from the south-southwest (200°) at 11 knots, gusting to 19 | 10+ mi | none | 957 ft | 13:54 UTC |
| LNK Lincoln, NE | 1069 nm out, 5 nm southwest of the line, tower | VFR | from the south (190°) at 12 knots, gusting to 19 | 10+ mi | none | 1,218 ft | 13:54 UTC |
| EAR Kearney, NE | 1179 nm out, 6 nm northeast of the line | VFR | from the south-southwest (200°) at 13 knots, gusting to 20 | 10+ mi | none | 2,131 ft | 13:56 UTC |
| AKO Akron, CO | 1368 nm out, 5 nm north of the line | VFR | from the south-southwest (200°) at 6 knots | 10+ mi | none | 4,716 ft | 13:53 UTC |
| DEN Denver, CO | destination | VFR Sky: a few clouds at 8,000 feet, a few clouds at 12,000 feet | from the southwest (220°) at 7 knots | 10+ mi | none | 5,433 ft | 7:53 am MDT (13:53 UTC) |
The highest airport on this list sits at 5,433 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At DEN when you get there the forecast at the estimated arrival, 11:04 pm MDT (05:04 UTC)
Wind from the north at 10 knots, visibility more than 6 miles, a few clouds at 2,000 feet, scattered clouds at 4,000 feet VFR
The whole forecast for DEN
- From Mon 6:00 am MDT (12:00 UTC): wind from the south-southwest at 15 knots, visibility more than 6 miles, clear skies
- From Mon 10:00 am MDT (16:00 UTC): wind from the southwest at 14 knots, gusting to 21, visibility more than 6 miles, clear skies
- From Mon 7:00 pm MDT (01:00 UTC): wind from the south at 9 knots, visibility more than 6 miles, clear skies
- From Mon 11:00 pm MDT (05:00 UTC): wind from the north at 10 knots, visibility more than 6 miles, a few clouds at 2,000 feet, scattered clouds at 4,000 feet
- From Tue 4:00 am MDT (10:00 UTC): wind from the north-northeast at 8 knots, visibility more than 6 miles, a broken layer at 2,000 feet
- From Tue 10:00 am MDT (16:00 UTC): wind from the northeast at 7 knots, visibility more than 6 miles, a few clouds at 2,000 feet, a broken layer at 4,000 feet
The forecast for ISP, the departure
- From Mon 11:00 am EDT (15:00 UTC): wind from the north at 11 knots, gusting to 20, visibility more than 6 miles, a broken layer at 1,500 feet
- At times between Mon 12:00 pm EDT (16:00 UTC) and 1:00 pm EDT (17:00 UTC): scattered clouds at 1,500 feet, a broken layer at 3,500 feet
- From Mon 2:00 pm EDT (18:00 UTC): wind from the north-northwest at 10 knots, visibility more than 6 miles, a few clouds at 2,500 feet, scattered clouds at 4,000 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
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 7 nm from the route, at the departure end · security · until 20 October · ZNY
- 6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local on the route, 320 nm along the route · a VIP movement · today · ZOB
- 6/8888 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 6 nm from the route, 340 nm along the route · security · today · ZOB
- 6/8829 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 1 nm from the route, 340 nm along the route · a VIP movement · today · ZOB
- 6/8992 Monroe, MI, Thursday, October 15, 2026 Local 24 nm from the route, 469 nm along the route · a VIP movement · starts Thursday 15 October · ZOB
Daylight
Sunset at ISP 6:17 pm EDT (22:17 UTC), at DEN 6:22 pm MDT (00:22 UTC) (civil twilight ends 6:49 pm MDT (00:49 UTC)). At 120 knots the arrival at DEN is after sunset there (6:24 pm MDT (00:24 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: Long Island Mac Arthur Airport, Denver International.