General Edward Lawrence Logan International to Ted Stevens Anchorage International BOS → ANC
2,931 nautical miles (3,374 statute miles) northwest on a straight line, true course 321°, about 336° magnetic at the departure end (variation 15W). At 120 knots that is 23 h 38 min at the quickest height in today's winds (4,500 ft, a 4-knot tailwind), arriving about 3:52 pm AKDT (23:52 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: 14 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 ZULU 1C: moderate icing up to 24,000 ft. Over the first 209 nm of the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the first 209 nm of the route.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 199 nm of the route.
- AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Near the route, at the departure end.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Near the route, at the departure end.
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 20:00–03:00 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 10 forecast points nearest it (BOS, BML, SYR, BUF, TVC, INL, MOT, GGW, GPI, SEA). 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 | 050° at 3 kt | −4 kt | 0 °C | 124 kt | 23 h 38 min | 3:52 pm AKDT (23:52 UTC) |
| 6,500 ft | 320° at 3 kt | 0 | 5 °C | 120 kt | 24 h 26 min | 4:40 pm AKDT (00:40 UTC) |
| 8,500 ft | 270° at 4 kt | +1 kt | 2 °C | 119 kt | 24 h 38 min | 4:52 pm AKDT (00:52 UTC) |
| 10,500 ft | 250° at 6 kt | +1 kt | -1 °C | 119 kt | 24 h 38 min | 4:52 pm AKDT (00:52 UTC) |
| 12,500 ft | 260° at 9 kt | +2 kt | -5 °C | 118 kt | 24 h 50 min | 5:04 pm AKDT (01:04 UTC) |
| 14,500 ft | 270° at 11 kt | +4 kt | -8 °C | 116 kt | 25 h 16 min | 5:30 pm AKDT (01:30 UTC) |
| 16,500 ft | 280° at 14 kt | +6 kt | -11 °C | 114 kt | 25 h 43 min | 5:57 pm AKDT (01:57 UTC) |
| 18,000 ft FL180 | 290° at 17 kt | +7 kt | -13 °C | 113 kt | 25 h 56 min | 6:10 pm AKDT (02:10 UTC) |
| 24,000 ft FL240 | 290° at 24 kt | +10 kt | -23 °C | 110 kt | 26 h 39 min | 6:53 pm AKDT (02:53 UTC) |
| 30,000 ft FL300 | 280° at 39 kt | +23 kt | -38 °C | 97 kt | 30 h 13 min | 10:27 pm AKDT (06:27 UTC) |
| 34,000 ft FL340 | 280° at 42 kt | +27 kt | -45 °C | 93 kt | 31 h 31 min | 11:45 pm AKDT (07:45 UTC) |
| 39,000 ft FL390 | 270° at 49 kt | +32 kt | -49 °C | 88 kt | 33 h 18 min | 1:32 am AKDT (09:32 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BOS | used from 0 nm out; 25 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° |
| BML | used from 100 nm out; 80 nm from the line | 220/19 | 210/17 9° | 240/12 4° | 270/22 1° | 250/21 -11° | 260/41 -19° | 250/68 -34° | 250/82 -44° | 250/115 -55° |
| SYR | used from 249 nm out; 169 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° |
| BUF | used from 449 nm out; 320 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° |
| TVC | used from 499 nm out; 356 nm from the line | 210/17 | 290/14 15° | 310/20 9° | 310/18 2° | 310/24 -11° | 320/35 -22° | 320/53 -39° | 310/45 -49° | 290/58 -51° |
| INL | used from 748 nm out; 405 nm from the line | 060/19 | 300/13 11° | 240/19 7° | 230/43 1° | 260/54 -11° | 260/50 -22° | 270/66 -38° | 280/70 -49° | 270/79 -56° |
| MOT | used from 1396 nm out; 587 nm from the line | 070/8 6° | 180/7 2° | 220/18 -1° | 240/37 -11° | 250/55 -20° | 250/64 -36° | 250/70 -46° | 250/80 -54° | |
| GGW | used from 1595 nm out; 676 nm from the line | 090/18 0° | 140/12 -2° | 150/13 -3° | 200/35 -12° | 230/56 -22° | 240/75 -37° | 240/81 -46° | 240/78 -49° | |
| GPI | used from 1795 nm out; 748 nm from the line | 060/19 -3° | 110/11 -8° | 130/6 -8° | 200/40 -19° | 190/58 -28° | 200/101 -39° | 220/73 -43° | 230/41 -43° | |
| SEA | used from 2144 nm out; 874 nm from the line | 360/9 | 350/10 1° | 010/10 -5° | 030/20 -11° | 020/60 -17° | 010/86 -26° | 360/90 -40° | 010/68 -42° | 360/31 -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 | ||||
| ASH Nashua, NH | 30 nm out, 4 nm northwest of the line, tower | no report just now | 200 ft | ||||
| CYVO Val-D'Or, | 449 nm out, 11 nm northeast of the line | no report just now | 1,107 ft | ||||
| CYDM Ross River, | 2433 nm out, 21 nm south of the line | no report just now | 2,314 ft | ||||
| BCV Birchwood, AK | 2912 nm out, 11 nm northwest of the line | no report just now | 83 ft | ||||
| ANC Anchorage, AK | destination | no report just now | 151 ft |
The highest airport on this list sits at 2,314 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At ANC when you get there the forecast at the estimated arrival, 3:52 pm AKDT (23:52 UTC)
ANC 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 19 nm from the route, at the departure end · drones kept away from a public gathering · starts Saturday 17 October · ZBW
- 6/8889 Anchorage, AK, Tuesday, October 13, 2026 through Tuesday, October 13, 2026 Local on the route, at the destination end · a VIP movement · starts tomorrow · ZAN
- 6/8772 Anchorage, AK, Tuesday, October 13, 2026 through Tuesday, October 13, 2026 Local 3 nm from the route, at the destination end · security · starts tomorrow · ZAN
Daylight
Sunset at BOS 6:07 pm EDT (22:07 UTC), at ANC 6:57 pm AKDT (02:57 UTC) (civil twilight ends 7:40 pm AKDT (03:40 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, Ted Stevens Anchorage International.