Chicago O'Hare International to General Edward Lawrence Logan International ORD → BOS
751 nautical miles (865 statute miles) east on a straight line, true course 083°, about 086° magnetic at the departure end (variation 3W). At 120 knots that is 4 h 25 min at the quickest height in today's winds (39,000 ft, a 50-knot tailwind), arriving about 2:03 am EDT (06:03 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: 15,048 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 last 563 nm of the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 376 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 445 to 662 nm out.
- AIRMET ZULU 1C: moderate icing up to 22,000 ft. Over the last 237 nm of the route.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 13,000 ft. Over the last 217 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 ORD.
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 (JOT, MKG, FWA, CLE, BUF, SYR, ALB, BDL, BOS). 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 | 170° at 8 kt | +2 kt | 118 kt | 6 h 22 min | 4:00 am EDT (08:00 UTC) | |
| 5,500 ft | 230° at 5 kt | −3 kt | 123 kt | 6 h 06 min | 3:44 am EDT (07:44 UTC) | |
| 7,500 ft | 280° at 6 kt | −6 kt | 10 °C | 126 kt | 5 h 58 min | 3:36 am EDT (07:36 UTC) |
| 9,500 ft | 290° at 9 kt | −7 kt | 7 °C | 127 kt | 5 h 55 min | 3:33 am EDT (07:33 UTC) |
| 11,500 ft | 290° at 10 kt | −9 kt | 3 °C | 129 kt | 5 h 49 min | 3:27 am EDT (07:27 UTC) |
| 13,500 ft | 290° at 12 kt | −10 kt | -1 °C | 130 kt | 5 h 47 min | 3:25 am EDT (07:25 UTC) |
| 15,500 ft | 280° at 14 kt | −13 kt | -5 °C | 133 kt | 5 h 39 min | 3:17 am EDT (07:17 UTC) |
| 17,500 ft | 280° at 16 kt | −15 kt | -9 °C | 135 kt | 5 h 34 min | 3:12 am EDT (07:12 UTC) |
| 18,000 ft FL180 | 280° at 16 kt | −15 kt | -10 °C | 135 kt | 5 h 34 min | 3:12 am EDT (07:12 UTC) |
| 24,000 ft FL240 | 270° at 20 kt | −19 kt | -21 °C | 139 kt | 5 h 24 min | 3:02 am EDT (07:02 UTC) |
| 30,000 ft FL300 | 260° at 33 kt | −30 kt | -35 °C | 150 kt | 5 h | 2:38 am EDT (06:38 UTC) |
| 34,000 ft FL340 | 250° at 48 kt | −44 kt | -42 °C | 164 kt | 4 h 35 min | 2:13 am EDT (06:13 UTC) |
| 39,000 ft FL390 | 250° at 53 kt | −50 kt | -50 °C | 170 kt | 4 h 25 min | 2:03 am EDT (06:03 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| JOT | used from 0 nm out; 48 nm from the line | 230/11 | 290/12 16° | 300/19 10° | 320/19 4° | 300/17 -9° | 330/31 -20° | 320/49 -37° | 320/53 -45° | 320/67 -49° |
| MKG | used from 49 nm out; 63 nm from the line | 250/5 | 320/10 15° | 310/19 9° | 320/21 3° | 310/23 -10° | 330/37 -22° | 330/51 -38° | 320/44 -47° | 300/60 -49° |
| FWA | used from 99 nm out; 74 nm from the line | 350/9 | 350/24 15° | 360/25 9° | 360/29 4° | 350/31 -10° | 340/39 -22° | 330/40 -37° | 320/38 -43° | 320/48 -48° |
| CLE | used from 198 nm out; 74 nm from the line | 340/5 | 320/13 14° | 300/12 8° | 310/10 2° | 310/14 -10° | 340/14 -23° | 320/27 -35° | 260/28 -40° | 250/36 -48° |
| BUF | used from 346 nm out; 47 nm from the line | 170/19 | L/V 10° | 040/9 6° | 220/8 2° | 230/15 -11° | 220/33 -22° | 220/47 -35° | 230/55 -41° | 230/56 -50° |
| SYR | used from 494 nm out; 37 nm from the line | 160/17 | 200/22 10° | 250/10 6° | L/V 1° | 270/11 -11° | 220/25 -20° | 220/66 -36° | 230/89 -42° | 240/74 -51° |
| ALB | used from 593 nm out; 19 nm from the line | 160/27 | 190/16 9° | 200/29 7° | 230/21 3° | 240/24 -9° | 240/43 -19° | 230/65 -33° | 240/91 -42° | 230/99 -53° |
| BDL | used from 643 nm out; 32 nm from the line | 140/28 | 180/29 10° | 220/38 8° | 250/30 3° | 250/40 -8° | 240/46 -18° | 240/58 -32° | 240/80 -41° | 240/89 -55° |
| BOS | used from 692 nm out; 35 nm from the line | 160/27 | 190/23 9° | 260/20 7° | 260/32 1° | 250/48 -7° | 240/56 -17° | 240/59 -33° | 250/75 -43° | 250/94 -55° |
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 |
|---|---|---|---|---|---|---|---|
| ORD Chicago, IL | departure | no report just now | 680 ft | ||||
| GYY Gary/Chicago, IN | 20 nm out, 24 nm south of the line, tower | no report just now | 596 ft | ||||
| AZO Kalamazoo, MI | 109 nm out, 4 nm northwest of the line, tower | no report just now | 873 ft | ||||
| JXN Jackson, MI | 158 nm out, 4 nm west of the line, tower | no report just now | 1,000 ft | ||||
| ERI Erie, PA | 346 nm out, 23 nm south of the line, tower | no report just now | 732 ft | ||||
| DKK Dunkirk, NY | 386 nm out, 1 nm northwest of the line | no report just now | 692 ft | ||||
| ITH Ithaca, NY | 514 nm out, 5 nm west of the line, tower | no report just now | 1,099 ft | ||||
| BGM Binghamton, NY | 534 nm out, 18 nm south of the line, tower | no report just now | 1,635 ft | ||||
| BAF Westfield/Springfield, MA | 672 nm out, 17 nm south of the line, tower | no report just now | 270 ft | ||||
| ORH Worcester, MA | 712 nm out, 8 nm south of the line, tower | no report just now | 1,009 ft | ||||
| BOS Boston, MA | destination | no report just now | 19 ft |
The highest airport on this list sits at 1,635 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At BOS when you get there the forecast at the estimated arrival, 2:03 am EDT (06:03 UTC)
BOS has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/8802 Foxborough, MA, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 16 nm from the route, at the destination end · drones kept away from a public gathering · starts Saturday 17 October · ZBW
Daylight
Sunset at ORD 6:15 pm CDT (23:15 UTC), at BOS 6:07 pm EDT (22:07 UTC) (civil twilight ends 6:35 pm EDT (22:35 UTC)). At 120 knots the arrival at BOS is before sunrise there (6:53 am EDT (10:53 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: Chicago O'Hare International, General Edward Lawrence Logan International.