St. Louis Downtown Airport to Westchester County CPS → HPN
772 nautical miles (888 statute miles) east on a straight line, true course 074°, about 074° magnetic at the departure end (variation 0E). At 120 knots that is 4 h 50 min at the quickest height in today's winds (34,000 ft, a 40-knot tailwind), arriving about 2:35 am EDT (06:35 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: 9 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 3E: thunderstorms (a convective SIGMET) up to 31,000 ft, moving from the west at 15 knots, until 9:55 pm CDT (02:55 UTC). Over the route from 376 to 426 nm out.
as issued
WSUS31 KKCI 120055 MKCE WST 120055 CONVECTIVE SIGMET 3E VALID UNTIL 0255Z PA MD VA NC WV OH KY FROM 20NE APE-30SE JST-30SSE DCA-40SW ECG-70NNW HMV-20NE APE AREA TS MOV FROM 28015KT. TOPS TO FL310.
- SIGMET 2E: thunderstorms (a convective SIGMET) up to 31,000 ft, moving from the southwest at 20 knots, until 9:55 pm CDT (02:55 UTC). Over the last 69 nm of the route.
as issued
WSUS31 KKCI 120055 MKCE WST 120055 CONVECTIVE SIGMET 2E VALID UNTIL 0255Z CT NY NJ PA DE MD AND NJ NY CT CSTL WTRS FROM 30NE SAX-30SSW HTO-30ESE EMI-50WSW HAR-30NE SAX AREA EMBD TS MOV FROM 22020KT. TOPS TO FL310.
- 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 last 485 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 455 to 673 nm out.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the route from 475 to 742 nm out.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 13,000 ft. Over the last 99 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 CPS.
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 20:00–03:00 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 9 forecast points nearest it (STL, EVV, IND, CVG, CMH, AGC, 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 | 080° at 2 kt | +3 kt | 117 kt | 6 h 36 min | 4:21 am EDT (08:21 UTC) | |
| 5,500 ft | 310° at 7 kt | −4 kt | 13 °C | 124 kt | 6 h 14 min | 3:59 am EDT (07:59 UTC) |
| 7,500 ft | 310° at 10 kt | −5 kt | 11 °C | 125 kt | 6 h 11 min | 3:56 am EDT (07:56 UTC) |
| 9,500 ft | 320° at 11 kt | −5 kt | 8 °C | 125 kt | 6 h 11 min | 3:56 am EDT (07:56 UTC) |
| 11,500 ft | 320° at 11 kt | −5 kt | 5 °C | 125 kt | 6 h 11 min | 3:56 am EDT (07:56 UTC) |
| 13,500 ft | 310° at 12 kt | −7 kt | 0 °C | 127 kt | 6 h 05 min | 3:50 am EDT (07:50 UTC) |
| 15,500 ft | 300° at 13 kt | −8 kt | -4 °C | 128 kt | 6 h 02 min | 3:47 am EDT (07:47 UTC) |
| 17,500 ft | 300° at 14 kt | −10 kt | -9 °C | 130 kt | 5 h 56 min | 3:41 am EDT (07:41 UTC) |
| 18,000 ft FL180 | 300° at 14 kt | −10 kt | -10 °C | 130 kt | 5 h 56 min | 3:41 am EDT (07:41 UTC) |
| 24,000 ft FL240 | 280° at 16 kt | −13 kt | -21 °C | 133 kt | 5 h 48 min | 3:33 am EDT (07:33 UTC) |
| 30,000 ft FL300 | 270° at 33 kt | −31 kt | -34 °C | 151 kt | 5 h 07 min | 2:52 am EDT (06:52 UTC) |
| 34,000 ft FL340 | 260° at 42 kt | −40 kt | -40 °C | 160 kt | 4 h 50 min | 2:35 am EDT (06:35 UTC) |
| 39,000 ft FL390 | 260° at 41 kt | −39 kt | -49 °C | 159 kt | 4 h 51 min | 2:36 am EDT (06:36 UTC) |
Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| STL | used from 0 nm out; 34 nm from the line | 210/13 | 260/16 17° | 270/21 10° | 280/24 5° | 310/20 -7° | 320/22 -18° | 320/44 -33° | 320/59 -43° | 310/69 -51° |
| EVV | used from 49 nm out; 73 nm from the line | 310/13 | 340/26 16° | 330/29 10° | 330/32 4° | 330/30 -9° | 340/38 -20° | 330/60 -35° | 320/57 -41° | 330/39 -48° |
| IND | used from 148 nm out; 27 nm from the line | 320/10 | 350/30 16° | 350/32 10° | 350/30 4° | 340/31 -10° | 340/42 -21° | 340/49 -37° | 320/46 -41° | 320/47 -47° |
| CVG | used from 247 nm out; 41 nm from the line | 350/13 | 340/20 13° | 340/22 8° | 350/30 3° | 340/30 -9° | 340/38 -21° | 330/37 -35° | 320/38 -40° | 310/35 -47° |
| CMH | used from 297 nm out; 26 nm from the line | 340/14 | 320/13 12° | 350/12 8° | 360/10 2° | 350/27 -10° | 340/20 -22° | 320/31 -35° | 270/25 -39° | 260/32 -48° |
| AGC | used from 396 nm out; 65 nm from the line | 140/12 | 350/10 12° | L/V 9° | L/V 3° | 200/11 -11° | 220/21 -22° | 220/47 -33° | 230/51 -39° | 230/45 -48° |
| PSB | used from 544 nm out; 15 nm from the line | 260/13 13° | 220/12 8° | 220/11 4° | 230/27 -11° | 210/31 -21° | 220/73 -32° | 220/75 -40° | 230/66 -50° | |
| AVP | used from 643 nm out; 31 nm from the line | 110/36 | 190/34 13° | 230/11 8° | 230/16 4° | 230/26 -8° | 220/40 -19° | 230/73 -33° | 230/98 -41° | 230/87 -51° |
| JFK | used from 742 nm out; 27 nm from the line | 140/43 | 170/35 13° | 230/18 9° | 250/25 5° | 240/40 -7° | 230/50 -17° | 230/75 -31° | 230/78 -41° | 230/88 -53° |
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 |
|---|---|---|---|---|---|---|---|
| CPS Cahokia/St Louis, IL | departure | no report just now | 412 ft | ||||
| GRE Greenville, IL | 40 nm out, 5 nm north of the line | no report just now | 540 ft | ||||
| HUF Terre Haute, IN | 139 nm out, 16 nm north of the line, tower | no report just now | 589 ft | ||||
| BMG Bloomington, IN | 168 nm out, 10 nm south of the line, tower | no report just now | 845 ft | ||||
| DAY Dayton, OH | 287 nm out, 8 nm north of the line, tower | no report just now | 1,009 ft | ||||
| CMH Columbus, OH | 346 nm out, 2 nm northeast of the line, tower | no report just now | 815 ft | ||||
| HLG Wheeling, WV | 455 nm out, 9 nm south of the line, tower | no report just now | 1,194 ft | ||||
| AGC Pittsburgh, PA | 485 nm out, 4 nm south of the line, tower | no report just now | 1,251 ft | ||||
| UNV State College, PA | 584 nm out, 11 nm north of the line, tower | no report just now | 1,231 ft | ||||
| ABE Allentown, PA | 693 nm out, 16 nm south of the line, tower | no report just now | 393 ft | ||||
| CDW Caldwell, NJ | 742 nm out, 9 nm southeast of the line, tower | no report just now | 172 ft | ||||
| HPN White Plains, NY | destination | no report just now | 439 ft |
The highest airport on this list sits at 1,251 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At HPN when you get there the forecast at the estimated arrival, 2:35 am EDT (06:35 UTC)
HPN has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/8829 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 18 nm from the route, 465 nm along the route · a VIP movement · today · ZOB
- 6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 18 nm from the route, 465 nm along the route · a VIP movement · today · ZOB
- 5/2811 NEW YORK, NY, Monday, October 20, 2025 through Tuesday, October 20, 2026 Local 16 nm from the route, at the destination end · security · until 20 October · ZNY
Daylight
Sunset at CPS 6:27 pm CDT (23:27 UTC), at HPN 6:19 pm EDT (22:19 UTC) (civil twilight ends 6:46 pm EDT (22:46 UTC)). At 120 knots the arrival at HPN is before sunrise there (7:02 am EDT (11:02 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: St. Louis Downtown Airport, Westchester County.