General Edward Lawrence Logan International to Salt Lake City International BOS → SLC
1,825 nautical miles (2,100 statute miles) west on a straight line, true course 281°, about 296° magnetic at the departure end (variation 15W). At 120 knots that is 16 h 54 min at the quickest height in today's winds (4,500 ft, a 12-knot headwind), arriving about 5:57 pm MDT (23:57 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: 2,470 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 638 nm of the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the first 279 nm of the route.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 10,000 ft. Over the first 80 nm of the route.
- AIRMET ZULU 1C: moderate icing up to 22,000 ft. Over the route from 30 to 170 nm out.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 80 to 239 nm out.
- AIRMET TANGO 3W: 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 808 to 1396 nm out.
- AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 1266 to 1416 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the route from 1406 to 1785 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 369 nm of the route.
- AIRMET TANGO 1W: 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 1506 to 1675 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 249 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 249 nm of the route.
- AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 1585 to 1675 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 BOS.
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 02:00–09:00 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 16 forecast points nearest it (BOS, BDL, ALB, SYR, BUF, CLE, MKG, GRB, LSE, MCW, FSD, ONL, BFF, LND, RKS, SLC). 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 | 230° at 14 kt | +12 kt | 20 °C | 108 kt | 16 h 54 min | 5:57 pm MDT (23:57 UTC) |
| 6,500 ft | 240° at 12 kt | +13 kt | 14 °C | 107 kt | 17 h 03 min | 6:06 pm MDT (00:06 UTC) |
| 8,500 ft | 240° at 14 kt | +14 kt | 10 °C | 106 kt | 17 h 13 min | 6:16 pm MDT (00:16 UTC) |
| 10,500 ft | 240° at 15 kt | +15 kt | 7 °C | 105 kt | 17 h 23 min | 6:26 pm MDT (00:26 UTC) |
| 12,500 ft | 240° at 16 kt | +16 kt | 3 °C | 104 kt | 17 h 33 min | 6:36 pm MDT (00:36 UTC) |
| 14,500 ft | 250° at 18 kt | +19 kt | -2 °C | 101 kt | 18 h 04 min | 7:07 pm MDT (01:07 UTC) |
| 16,500 ft | 250° at 20 kt | +21 kt | -6 °C | 99 kt | 18 h 26 min | 7:29 pm MDT (01:29 UTC) |
| 18,000 ft FL180 | 260° at 22 kt | +23 kt | -10 °C | 97 kt | 18 h 49 min | 7:52 pm MDT (01:52 UTC) |
| 24,000 ft FL240 | 250° at 28 kt | +28 kt | -21 °C | 92 kt | 19 h 50 min | 8:53 pm MDT (02:53 UTC) |
| 30,000 ft FL300 | 250° at 35 kt | +35 kt | -34 °C | 85 kt | 21 h 28 min | 10:31 pm MDT (04:31 UTC) |
| 34,000 ft FL340 | 260° at 45 kt | +46 kt | -41 °C | 74 kt | 24 h 40 min | 1:43 am MDT (07:43 UTC) |
| 39,000 ft FL390 | 260° at 52 kt | +53 kt | -49 °C | 67 kt | 27 h 14 min | 4:17 am MDT (10:17 UTC) |
Based on data from the 12th at 00:00 UTC; valid on the 12th at 06:00 UTC for use 02:00 to 09:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BOS | used from 0 nm out; 25 nm from the line | 110/20 | 200/26 12° | 280/24 8° | 260/29 3° | 250/47 -10° | 230/59 -19° | 230/74 -33° | 240/95 -41° | 240/96 -53° |
| BDL | used from 50 nm out; 39 nm from the line | 120/24 | 290/23 12° | 280/21 8° | 250/36 3° | 250/41 -11° | 230/48 -21° | 230/78 -32° | 230/96 -41° | 230/86 -52° |
| ALB | used from 100 nm out; 2 nm from the line | 120/9 | 270/8 10° | L/V 5° | 260/9 1° | 260/34 -10° | 250/42 -22° | 240/57 -35° | 240/70 -42° | 240/65 -50° |
| SYR | used from 199 nm out; 9 nm from the line | 280/13 | 350/18 10° | 340/10 6° | 300/15 1° | 280/17 -12° | 270/16 -23° | 280/25 -38° | 250/40 -42° | 240/53 -50° |
| BUF | used from 299 nm out; 24 nm from the line | 320/10 | 010/16 10° | 360/10 6° | 340/13 2° | 330/22 -11° | 300/25 -23° | 320/31 -38° | 300/29 -44° | 280/36 -50° |
| CLE | used from 449 nm out; 119 nm from the line | 340/7 | 010/16 13° | 350/18 8° | 350/20 3° | 340/31 -10° | 340/46 -21° | 340/54 -37° | 330/62 -44° | 340/65 -49° |
| MKG | used from 548 nm out; 101 nm from the line | 260/22 | 290/16 15° | 300/11 10° | 290/5 3° | 300/26 -9° | 300/32 -20° | 320/48 -36° | 320/61 -45° | 310/74 -53° |
| GRB | used from 748 nm out; 61 nm from the line | 250/36 | 270/23 16° | 270/14 9° | 240/18 4° | 280/26 -9° | 280/29 -20° | 290/42 -36° | 290/51 -45° | 290/72 -55° |
| LSE | used from 798 nm out; 72 nm from the line | 230/40 | 240/24 17° | 240/13 10° | 250/13 6° | 280/22 -9° | 250/28 -21° | 250/41 -34° | 260/42 -44° | 270/62 -53° |
| MCW | used from 947 nm out; 16 nm from the line | 220/44 | 250/30 17° | 230/14 12° | 240/17 6° | 250/22 -8° | 270/29 -20° | 250/34 -34° | 260/52 -43° | 260/59 -51° |
| FSD | used from 1047 nm out; 62 nm from the line | 190/9 | 230/30 18° | 240/23 13° | 240/20 6° | 260/22 -9° | 250/31 -21° | 250/43 -36° | 260/49 -43° | 270/53 -47° |
| ONL | used from 1197 nm out; 29 nm from the line | 210/31 20° | 230/27 13° | 230/18 7° | 220/19 -8° | 240/26 -20° | 250/44 -35° | 270/52 -39° | 260/57 -47° | |
| BFF | used from 1346 nm out; 77 nm from the line | 180/28 | 220/33 15° | 210/31 7° | 230/32 -9° | 220/41 -21° | 220/40 -33° | 240/47 -36° | 250/54 -46° | |
| LND | used from 1546 nm out; 113 nm from the line | 200/23 6° | 220/31 1° | 220/39 -11° | 230/39 -23° | 220/51 -28° | 220/66 -37° | 230/68 -45° | ||
| RKS | used from 1595 nm out; 66 nm from the line | 200/41 | 220/44 1° | 220/35 -11° | 220/46 -24° | 210/53 -27° | 220/62 -35° | 230/61 -44° | ||
| SLC | used from 1745 nm out; 55 nm from the line | 200/5 | 230/8 2° | 220/20 -2° | 210/40 -12° | 190/53 -25° | 210/62 -30° | 220/69 -34° | 220/64 -43° |
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 |
|---|---|---|---|---|---|---|---|
| BOS Boston, MA | departure | no report just now | 19 ft | ||||
| ALB Albany, NY | 130 nm out, 4 nm east of the line, tower | no report just now | 284 ft | ||||
| ROC Rochester, NY | 299 nm out, 2 nm east of the line, tower | no report just now | 558 ft | ||||
| BAX Bad Axe, MI | 528 nm out, 20 nm north of the line | no report just now | 763 ft | ||||
| MBS Saginaw, MI | 578 nm out, 3 nm north of the line, tower | no report just now | 668 ft | ||||
| MSN Madison, WI | 808 nm out, 22 nm south of the line, tower | no report just now | 886 ft | ||||
| SHL Sheldon, IA | 1087 nm out, 4 nm west of the line | no report just now | 1,419 ft | ||||
| AGZ Wagner, SD | 1197 nm out, 5 nm northwest of the line | no report just now | 1,477 ft | ||||
| VTN Valentine, NE | 1296 nm out, 7 nm northwest of the line | no report just now | 2,595 ft | ||||
| GUR Guernsey, WY | 1486 nm out, 5 nm northwest of the line, tower | no report just now | 4,401 ft | ||||
| RKS Rock Springs, WY | 1685 nm out, 11 nm north of the line | no report just now | 6,764 ft | ||||
| SLC Salt Lake City, UT | destination | no report just now | 4,230 ft |
The highest airport on this list sits at 6,764 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SLC when you get there the forecast at the estimated arrival, 5:57 pm MDT (23:57 UTC)
SLC 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 17 nm from the route, at the departure end · drones kept away from a public gathering · starts Saturday 17 October · ZBW
Daylight
Sunset at BOS 6:07 pm EDT (22:07 UTC), at SLC 6:50 pm MDT (00:50 UTC) (civil twilight ends 7:18 pm MDT (01:18 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: General Edward Lawrence Logan International, Salt Lake City International.