St. Louis Lambert International to Westchester County STL → HPN
779 nautical miles (896 statute miles) east on a straight line, true course 074°, about 075° magnetic at the departure end (variation 1W). At 120 knots that is 5 h 16 min at the quickest height in today's winds (34,000 ft, a 28-knot tailwind), arriving about 10:20 am EDT (14:20 UTC). 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, fog). Over the last 629 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 469 to 679 nm out.
- AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 6,000 ft. Near the route, 579 nm along the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 33,000 ft. Over the last 150 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 STL.
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 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 9 forecast points nearest it (STL, SPI, 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 | 310° at 13 kt | −9 kt | 129 kt | 6 h 02 min | 11:06 am EDT (15:06 UTC) | |
| 5,500 ft | 330° at 14 kt | −5 kt | 12 °C | 125 kt | 6 h 14 min | 11:18 am EDT (15:18 UTC) |
| 7,500 ft | 330° at 15 kt | −5 kt | 11 °C | 125 kt | 6 h 14 min | 11:18 am EDT (15:18 UTC) |
| 9,500 ft | 330° at 16 kt | −6 kt | 7 °C | 126 kt | 6 h 11 min | 11:15 am EDT (15:15 UTC) |
| 11,500 ft | 320° at 18 kt | −9 kt | 4 °C | 129 kt | 6 h 02 min | 11:06 am EDT (15:06 UTC) |
| 13,500 ft | 320° at 21 kt | −11 kt | 0 °C | 131 kt | 5 h 57 min | 11:01 am EDT (15:01 UTC) |
| 15,500 ft | 320° at 24 kt | −13 kt | -4 °C | 133 kt | 5 h 51 min | 10:55 am EDT (14:55 UTC) |
| 17,500 ft | 320° at 27 kt | −14 kt | -7 °C | 134 kt | 5 h 49 min | 10:53 am EDT (14:53 UTC) |
| 18,000 ft FL180 | 320° at 28 kt | −15 kt | -8 °C | 135 kt | 5 h 46 min | 10:50 am EDT (14:50 UTC) |
| 24,000 ft FL240 | 310° at 31 kt | −18 kt | -21 °C | 138 kt | 5 h 39 min | 10:43 am EDT (14:43 UTC) |
| 30,000 ft FL300 | 320° at 36 kt | −19 kt | -35 °C | 139 kt | 5 h 36 min | 10:40 am EDT (14:40 UTC) |
| 34,000 ft FL340 | 320° at 50 kt | −28 kt | -42 °C | 148 kt | 5 h 16 min | 10:20 am EDT (14:20 UTC) |
| 39,000 ft FL390 | 310° at 47 kt | −27 kt | -51 °C | 147 kt | 5 h 18 min | 10:22 am EDT (14:22 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| STL | used from 0 nm out; 25 nm from the line | 250/26 | 240/21 15° | 240/22 11° | 250/23 6° | 270/28 -7° | 260/30 -19° | 280/52 -31° | 280/57 -40° | 300/57 -49° |
| SPI | used from 50 nm out; 61 nm from the line | 260/28 | 250/22 15° | 250/14 9° | 260/20 6° | 280/27 -7° | 280/34 -19° | 280/48 -32° | 280/59 -41° | 300/60 -49° |
| IND | used from 100 nm out; 74 nm from the line | 270/22 | 290/19 15° | 270/19 8° | 270/18 4° | 290/28 -7° | 280/35 -20° | 270/37 -34° | 300/51 -42° | 300/61 -51° |
| CVG | used from 250 nm out; 47 nm from the line | 300/19 | 310/23 15° | 320/20 9° | 310/18 3° | 300/26 -6° | 290/36 -19° | 310/32 -34° | 310/53 -43° | 310/61 -51° |
| CMH | used from 299 nm out; 31 nm from the line | 320/12 | 340/26 15° | 340/22 9° | 320/24 3° | 320/32 -7° | 320/36 -20° | 330/42 -35° | 320/59 -44° | 320/57 -50° |
| AGC | used from 399 nm out; 69 nm from the line | 340/11 | 350/12 11° | 360/25 7° | 340/30 2° | 340/41 -8° | 340/44 -21° | 350/59 -36° | 340/68 -42° | 340/50 -51° |
| PSB | used from 549 nm out; 12 nm from the line | 020/21 12° | 360/28 7° | 360/29 1° | 350/33 -10° | 350/42 -22° | 350/49 -37° | 340/63 -43° | 350/39 -52° | |
| AVP | used from 649 nm out; 30 nm from the line | 010/20 | 020/24 11° | 360/19 8° | 350/23 2° | 320/24 -11° | 330/25 -22° | 330/27 -37° | 310/28 -42° | 290/30 -50° |
| JFK | used from 749 nm out; 27 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 |
|---|---|---|---|---|---|---|---|
| STL St Louis, MO | departure | no report just now | 617 ft | ||||
| ALN Alton/St Louis, IL | 20 nm out, 5 nm northwest of the line, tower | no report just now | 543 ft | ||||
| HUF Terre Haute, IN | 150 nm out, 5 nm northwest of the line, tower | no report just now | 589 ft | ||||
| IND Indianapolis, IN | 200 nm out, 10 nm northwest of the line, tower | no report just now | 796 ft | ||||
| DAY Dayton, OH | 290 nm out, 4 nm east of the line, tower | no report just now | 1,009 ft | ||||
| OSU Columbus, OH | 349 nm out, 2 nm west of the line, tower | no report just now | 905 ft | ||||
| HLG Wheeling, WV | 459 nm out, 14 nm south of the line, tower | no report just now | 1,194 ft | ||||
| PIT Pittsburgh, PA | 479 nm out, 2 nm north of the line, tower | no report just now | 1,202 ft | ||||
| UNV State College, PA | 589 nm out, 8 nm north of the line, tower | no report just now | 1,231 ft | ||||
| ABE Allentown, PA | 699 nm out, 17 nm south of the line, tower | no report just now | 393 ft | ||||
| CDW Caldwell, NJ | 749 nm out, 10 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 1,231 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, 10:20 am EDT (14:20 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 13 nm from the route, 469 nm along the route · a VIP movement · today · ZOB
- 6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 13 nm from the route, 469 nm along the route · a VIP movement · today · ZOB
- 5/2811 NEW YORK, NY, Monday, October 20, 2025 through Tuesday, October 20, 2026 Local 17 nm from the route, at the destination end · security · until 20 October · ZNY
Daylight
Sunset at STL 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)).
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 Lambert International, Westchester County.