General Edward Lawrence Logan International to Portland International BOS → PDX
2,199 nautical miles (2,530 statute miles) northwest on a straight line, true course 293°, about 308° magnetic at the departure end (variation 15W). At 120 knots that is 19 h 07 min at the quickest height in today's winds (4,500 ft, a 5-knot headwind), arriving about 9:50 pm PDT (04:50 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: 1,323 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 first 260 nm of the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 33,000 ft. Over the first 220 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 70 to 220 nm out.
- AIRMET ZULU 1C: moderate icing from 12,000 ft to 24,000 ft. Near the route, at the departure end.
- AIRMET TANGO 2W: 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 530 to 850 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 890 to 1919 nm out.
- AIRMET ZULU 3C: moderate icing from 13,000 ft to 24,000 ft. Near the route, 910 nm along the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 1389 to 1449 nm out.
- AIRMET ZULU 2C: moderate icing up to 18,000 ft. Over the route from 1459 to 2049 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1619 to 1989 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 410 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 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 08:00–15:00 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 19 forecast points nearest it (BOS, ALB, SYR, BUF, TVC, GRB, DLH, AXN, GFK, MOT, DIK, MLS, GGW, BIL, GTF, GPI, LWS, YKM, PDX). 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 | 310° at 5 kt | +5 kt | 2 °C | 115 kt | 19 h 07 min | 9:50 pm PDT (04:50 UTC) |
| 6,500 ft | 300° at 8 kt | +8 kt | 7 °C | 112 kt | 19 h 38 min | 10:21 pm PDT (05:21 UTC) |
| 8,500 ft | 280° at 10 kt | +11 kt | 5 °C | 109 kt | 20 h 10 min | 10:53 pm PDT (05:53 UTC) |
| 10,500 ft | 270° at 13 kt | +14 kt | 2 °C | 106 kt | 20 h 45 min | 11:28 pm PDT (06:28 UTC) |
| 12,500 ft | 270° at 16 kt | +16 kt | -1 °C | 104 kt | 21 h 09 min | 11:52 pm PDT (06:52 UTC) |
| 14,500 ft | 270° at 17 kt | +17 kt | -5 °C | 103 kt | 21 h 21 min | 12:04 am PDT (07:04 UTC) |
| 16,500 ft | 280° at 17 kt | +18 kt | -10 °C | 102 kt | 21 h 34 min | 12:17 am PDT (07:17 UTC) |
| 18,000 ft FL180 | 280° at 18 kt | +19 kt | -13 °C | 101 kt | 21 h 46 min | 12:29 am PDT (07:29 UTC) |
| 24,000 ft FL240 | 270° at 22 kt | +23 kt | -24 °C | 97 kt | 22 h 40 min | 1:23 am PDT (08:23 UTC) |
| 30,000 ft FL300 | 270° at 24 kt | +25 kt | -37 °C | 95 kt | 23 h 09 min | 1:52 am PDT (08:52 UTC) |
| 34,000 ft FL340 | 270° at 35 kt | +36 kt | -42 °C | 84 kt | 26 h 11 min | 4:54 am PDT (11:54 UTC) |
| 39,000 ft FL390 | 270° at 46 kt | +48 kt | -48 °C | 72 kt | 30 h 32 min | 9:15 am PDT (16:15 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BOS | used from 0 nm out; 25 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° |
| ALB | used from 50 nm out; 54 nm from the line | 340/22 | 340/19 9° | 320/16 7° | 330/16 2° | 330/19 -11° | 320/21 -23° | 320/25 -39° | 280/30 -44° | 270/41 -51° |
| SYR | used from 200 nm out; 40 nm from the line | 330/17 | 320/14 9° | 350/18 8° | 350/26 2° | 340/25 -11° | 360/34 -22° | 350/43 -39° | 330/50 -46° | 350/50 -54° |
| BUF | used from 300 nm out; 87 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° |
| TVC | used from 500 nm out; 136 nm from the line | 270/31 | 280/23 15° | 260/22 8° | 260/29 4° | 280/29 -11° | 280/42 -21° | 270/42 -36° | 270/54 -47° | 290/67 -51° |
| GRB | used from 750 nm out; 103 nm from the line | 250/32 | 250/22 17° | 240/18 8° | 280/21 6° | 280/34 -11° | 280/35 -21° | 280/39 -37° | 270/52 -45° | 290/60 -49° |
| DLH | used from 800 nm out; 117 nm from the line | 090/31 | 250/7 14° | 250/26 11° | 250/36 4° | 280/36 -11° | 290/35 -22° | 300/39 -38° | 280/41 -44° | 280/66 -49° |
| AXN | used from 999 nm out; 76 nm from the line | 110/6 | 260/10 16° | 240/17 12° | 250/20 5° | 260/29 -10° | 260/35 -22° | 260/29 -38° | 270/48 -41° | 270/61 -48° |
| GFK | used from 1099 nm out; 60 nm from the line | 080/18 | L/V 11° | 260/22 7° | 250/48 3° | 260/51 -11° | 250/44 -22° | 260/34 -38° | 260/53 -44° | 270/66 -49° |
| MOT | used from 1249 nm out; 76 nm from the line | 120/14 4° | 190/25 5° | 220/41 1° | 240/43 -11° | 230/39 -22° | 220/44 -38° | 240/62 -42° | 250/73 -48° | |
| DIK | used from 1299 nm out; 57 nm from the line | 190/12 5° | 230/29 7° | 220/33 1° | 220/43 -11° | 210/47 -23° | 220/53 -33° | 240/56 -40° | 250/72 -47° | |
| MLS | used from 1449 nm out; 54 nm from the line | 290/17 -1° | 250/18 0° | 230/25 0° | 220/31 -11° | 220/32 -24° | 220/50 -32° | 220/60 -38° | 230/71 -46° | |
| GGW | used from 1549 nm out; 77 nm from the line | 100/7 -1° | 070/10 -3° | 190/6 -4° | 210/34 -10° | 230/33 -24° | 210/48 -37° | 230/65 -40° | 230/71 -46° | |
| BIL | used from 1599 nm out; 78 nm from the line | 300/14 | 270/19 -2° | 260/26 -2° | 220/28 -13° | 210/51 -25° | 220/56 -33° | 220/61 -39° | 220/72 -45° | |
| GTF | used from 1649 nm out; 59 nm from the line | L/V | L/V -7° | 240/8 -8° | 240/30 -14° | 240/40 -28° | 210/52 -38° | 210/76 -38° | 220/72 -43° | |
| GPI | used from 1799 nm out; 96 nm from the line | 090/8 -4° | 140/7 -7° | 090/10 -8° | 110/10 -19° | 210/25 -30° | 200/24 -40° | 210/31 -39° | 210/35 -42° | |
| LWS | used from 1849 nm out; 87 nm from the line | L/V | 340/5 -3° | L/V -6° | 040/7 -10° | 100/23 -22° | 180/30 -31° | 190/11 -34° | 200/11 -36° | 220/23 -40° |
| YKM | used from 2049 nm out; 47 nm from the line | 360/6 | 360/11 -1° | 030/20 -7° | 040/21 -11° | 020/55 -18° | 010/84 -26° | 010/79 -40° | 010/45 -42° | 350/23 -42° |
| PDX | used from 2149 nm out; 25 nm from the line | L/V | 340/8 0° | 360/12 -6° | 010/30 -7° | 360/62 -15° | 360/67 -26° | 360/68 -40° | 350/61 -48° | 340/26 -44° |
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, 14 nm north of the line, tower | no report just now | 200 ft | ||||
| CYPQ Peterborough, | 340 nm out, 9 nm south of the line | no report just now | 628 ft | ||||
| APN Alpena, MI | 570 nm out, 22 nm south of the line, tower | no report just now | 689 ft | ||||
| SAW Marquette, MI | 740 nm out, 16 nm north of the line, tower | no report just now | 1,204 ft | ||||
| DLH Duluth, MN | 939 nm out, 11 nm north of the line, tower | no report just now | 1,427 ft | ||||
| FAR Fargo, ND | 1129 nm out, 6 nm south of the line, tower | no report just now | 901 ft | ||||
| GDV Glendive, MT | 1459 nm out, 5 nm southeast of the line | no report just now | 2,458 ft | ||||
| HLN Helena, MT | 1749 nm out, 18 nm south of the line, tower | no report just now | 3,877 ft | ||||
| LWS Lewiston, ID | 1959 nm out, 3 nm southwest of the line, tower | no report just now | 1,442 ft | ||||
| PSC Pasco, WA | 2049 nm out, 8 nm north of the line, tower | no report just now | 410 ft | ||||
| PDX Portland, OR | destination | no report just now | 30 ft |
The highest airport on this list sits at 3,877 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At PDX when you get there the forecast at the estimated arrival, 9:50 pm PDT (04:50 UTC)
PDX 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
- 6/8771 NW NEGAUNEE, MI, Saturday, October 10, 2026 through Thursday, October 15, 2026 UTC 24 nm from the route, 750 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 15 October · ZMP
- 6/8665 9NM E HERMAN, MI, Friday, October 9, 2026 through Tuesday, October 13, 2026 UTC 21 nm from the route, 780 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZMP
Daylight
Sunset at BOS 6:07 pm EDT (22:07 UTC), at PDX 6:28 pm PDT (01:28 UTC) (civil twilight ends 6:58 pm PDT (01:58 UTC)). At 120 knots the arrival at PDX is after sunset there (6:30 pm PDT (01:30 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, Portland International.