South Bend International to Nantucket Memorial SBN → ACK
731 nautical miles (841 statute miles) east on a straight line, true course 087°, about 092° magnetic at the departure end (variation 5W). At 120 knots that is 4 h 31 min at the quickest height in today's winds (39,000 ft, a 42-knot tailwind), arriving about 12:04 pm EDT (16:04 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
- SIGMET E34E: thunderstorms (a convective SIGMET) up to 32,000 ft, moving from the southwest at 20 knots, until 8:55 am EDT (12:55 UTC). Near the route, at the destination end.
as issued
WSUS31 KKCI 121055 MKCE WST 121055 CONVECTIVE SIGMET 34E VALID UNTIL 1255Z MA AND MA RI NY CSTL WTRS FROM ACK-130E ACK-190SE ACK-170SSE ACK-120SSE HTO-ACK AREA EMBD TS MOV FROM 24020KT. TOPS TO FL320. REF INTL SIGMET CHARLIE SERIES.
- 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 691 nm of the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 33,000 ft. Over the last 415 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 316 to 523 nm out.
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 SBN.
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 8 forecast points nearest it (FWA, CLE, BUF, PSB, AVP, BDL, BOS, ACK). 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 | 340° at 11 kt | −4 kt | 124 kt | 5 h 54 min | 1:27 pm EDT (17:27 UTC) | |
| 5,500 ft | 350° at 16 kt | −3 kt | 12 °C | 123 kt | 5 h 57 min | 1:30 pm EDT (17:30 UTC) |
| 7,500 ft | 340° at 16 kt | −5 kt | 11 °C | 125 kt | 5 h 51 min | 1:24 pm EDT (17:24 UTC) |
| 9,500 ft | 330° at 16 kt | −8 kt | 7 °C | 128 kt | 5 h 43 min | 1:16 pm EDT (17:16 UTC) |
| 11,500 ft | 320° at 18 kt | −12 kt | 3 °C | 132 kt | 5 h 32 min | 1:05 pm EDT (17:05 UTC) |
| 13,500 ft | 320° at 21 kt | −15 kt | 0 °C | 135 kt | 5 h 25 min | 12:58 pm EDT (16:58 UTC) |
| 15,500 ft | 310° at 23 kt | −17 kt | -5 °C | 137 kt | 5 h 20 min | 12:53 pm EDT (16:53 UTC) |
| 17,500 ft | 310° at 25 kt | −20 kt | -8 °C | 140 kt | 5 h 13 min | 12:46 pm EDT (16:46 UTC) |
| 18,000 ft FL180 | 310° at 26 kt | −21 kt | -9 °C | 141 kt | 5 h 11 min | 12:44 pm EDT (16:44 UTC) |
| 24,000 ft FL240 | 300° at 27 kt | −22 kt | -21 °C | 142 kt | 5 h 09 min | 12:42 pm EDT (16:42 UTC) |
| 30,000 ft FL300 | 300° at 33 kt | −28 kt | -36 °C | 148 kt | 4 h 56 min | 12:29 pm EDT (16:29 UTC) |
| 34,000 ft FL340 | 290° at 44 kt | −39 kt | -43 °C | 159 kt | 4 h 36 min | 12:09 pm EDT (16:09 UTC) |
| 39,000 ft FL390 | 290° at 47 kt | −42 kt | -51 °C | 162 kt | 4 h 31 min | 12:04 pm EDT (16:04 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| FWA | used from 0 nm out; 52 nm from the line | 270/20 | 300/16 15° | 290/14 10° | 280/17 3° | 290/25 -7° | 280/30 -19° | 280/34 -35° | 290/48 -44° | 300/64 -52° |
| CLE | used from 99 nm out; 80 nm from the line | 310/7 | 350/20 14° | 340/16 9° | 320/21 2° | 320/32 -8° | 330/34 -20° | 330/45 -36° | 320/60 -45° | 320/64 -51° |
| BUF | used from 296 nm out; 72 nm from the line | 300/11 | 330/15 11° | 340/26 8° | 330/28 2° | 340/31 -10° | 340/32 -21° | 340/52 -37° | 340/59 -46° | 330/66 -53° |
| PSB | used from 346 nm out; 53 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 395 nm out; 60 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° |
| BDL | used from 543 nm out; 49 nm from the line | 020/15 | 010/19 10° | 340/10 7° | 300/17 3° | 280/23 -10° | 250/35 -22° | 250/44 -38° | 250/55 -42° | 250/57 -51° |
| BOS | used from 642 nm out; 62 nm from the line | 020/10 | 360/20 10° | 340/19 7° | 290/21 2° | 270/35 -9° | 260/42 -22° | 250/55 -38° | 240/75 -43° | 250/72 -51° |
| ACK | used from 691 nm out; 20 nm from the line | 340/16 | 270/32 14° | 260/37 9° | 260/30 4° | 250/41 -9° | 250/49 -21° | 240/92 -34° | 240/107 -42° | 240/94 -52° |
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 |
|---|---|---|---|---|---|---|---|
| SBN South Bend, IN | departure | no report just now | 798 ft | ||||
| IRS Sturgis, MI | 39 nm out, 4 nm north of the line | no report just now | 924 ft | ||||
| TOL Toledo, OH | 109 nm out, 13 nm south of the line, tower | no report just now | 683 ft | ||||
| CGF Cleveland, OH | 217 nm out, 15 nm south of the line, tower | no report just now | 876 ft | ||||
| ERI Erie, PA | 276 nm out, 17 nm north of the line, tower | no report just now | 732 ft | ||||
| BFD Bradford, PA | 346 nm out, 2 nm northwest of the line | no report just now | 2,143 ft | ||||
| ELZ Wellsville, NY | 375 nm out, 21 nm north of the line | no report just now | 2,124 ft | ||||
| AVP Wilkes-Barre/Scranton, PA | 474 nm out, 20 nm south of the line, tower | no report just now | 961 ft | ||||
| POU Poughkeepsie, NY | 553 nm out, 5 nm northeast of the line, tower | no report just now | 163 ft | ||||
| OXC Oxford, CT | 592 nm out, 2 nm southwest of the line, tower | no report just now | 730 ft | ||||
| MVY Vineyard Haven, MA | 701 nm out, 6 nm northeast of the line, tower | no report just now | 66 ft | ||||
| ACK Nantucket, MA | destination | no report just now | 46 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 ACK when you get there the forecast at the estimated arrival, 12:04 pm EDT (16:04 UTC)
ACK 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 7 nm from the route, 257 nm along the route · a VIP movement · today · ZOB
- 6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 7 nm from the route, 257 nm along the route · a VIP movement · today · ZOB
- 6/7153 North Sicuate, RI, Saturday, October 10, 2026 through Monday, October 12, 2026 UTC 22 nm from the route, 662 nm along the route · drones kept away from a public gathering · until 12 October · ZBW
Daylight
Sunset at SBN 7:09 pm EDT (23:09 UTC), at ACK 6:04 pm EDT (22:04 UTC) (civil twilight ends 6:32 pm EDT (22:32 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: South Bend International, Nantucket Memorial.