Plan a flight · Sun 11:42 pm PDT (06:42 UTC)

Portland International to General Edward Lawrence Logan International PDX → BOS

2,199 nautical miles (2,530 statute miles) east on a straight line, true course 076°, about 060° magnetic at the departure end (variation 16E). At 120 knots that is 13 h 01 min at the quickest height in today's winds (39,000 ft, a 49-knot tailwind), arriving about 3:43 pm EDT (19:43 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: 1,323 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 TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 190 nm of the route.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 110 to 700 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 200 to 580 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 280 to 490 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 320 to 1169 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 710 to 710 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). Near the route, 1369 nm along 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). Over the last 530 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 250 nm of the route.
AIRMET ZULU 1C: moderate icing up to 22,000 ft. Over the route from 1969 to 2179 nm out.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1979 to 2129 nm out.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 10,000 ft. Over the last 90 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 PDX.

Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first

UAL330 at 35,000 ft, 20 nm north, 9:30 pm PDT (04:30 UTC): moderate turbulence, wind 235° at 92 knots. At the destination end, 20 nm north of the line.
as filed, and in English
```
ARP UAL330 4257N 07145W 0430 F350 235/092KT TB MOD TURB CONT MOD CHOP IC
```
Report
a routine report filed through ARP
UAL932 at 35,000 ft, 50 nm east, 9:34 pm PDT (04:34 UTC): moderate turbulence, wind 240° at 69 knots. At the destination end, 50 nm east of the line.
as filed, and in English
```
ARP UAL932 4206N 06957W 0434 F350 240/069KT TB MOD TURB IC
```
Report
a routine report filed through ARP
UAL932 at 35,000 ft, 47 nm east, 9:33 pm PDT (04:33 UTC): moderate turbulence. At the destination end, 47 nm east of the line.
as filed, and in English
```
ARP UAL932 4206N 07001W 0433 F350 TB MODERATE SK CLEAR IC NONE
```
Report
a routine report filed through ARP
E75L at 1,500 ft, 6 nm north, 9:49 pm PDT (04:49 UTC): remarks: low-level wind shear loss of 8 knots on final. 150 nm along the route, 6 nm north of the line.
as filed, and in English
```
PSC UA /OV PSC120003/TM 0449/FL015/TP E75L/RM LLWS LOSS OF 8 KTS ON FINAL
```
Report
a routine report filed through PSC
Where
3 nm southeast (120°) of PSC
Time
04:49 UTC
Height
at 1,500 ft
Aircraft
E75L
Remarks
low-level wind shear loss of 8 knots on final
E75L descending, 27 nm south, 9:35 pm PDT (04:35 UTC): light turbulence from 11,000 ft to 14,000 ft, light rime icing from 8,000 ft to 12,000 ft, -10 °C. 150 nm along the route, 27 nm south of the line.
as filed, and in English
```
GEG UA /OV PDT/TM 0435/FLDURD/TP E75L/TA M10/TB LT TURB 140-110/IC LT RIME 120-080
```
Report
a routine report filed through GEG
Where
over PDT
Time
04:35 UTC
Height
during the descent
Aircraft
E75L
Temperature
−10 °C
Turbulence
lt turbulence from 14,000 ft to 11,000 ft
Icing
lt rime from 12,000 ft to 8,000 ft
B763 descending, 24 nm north, 11:21 pm PDT (06:21 UTC): overcast above 40,000 ft. At the destination end, 24 nm north of the line.
as filed, and in English
```
MHT UA /OV KMHT/TM 0621/FLDURD/TP B763/SK OVC004
```
Report
a routine report filed through MHT
Where
over KMHT
Time
06:21 UTC
Height
during the descent
Aircraft
B763
Sky
overcast from 400 ft
B763 descending, 24 nm north, 10:55 pm PDT (05:55 UTC): a routine report with nothing remarked on. At the destination end, 24 nm north of the line.
as filed, and in English
```
MHT UA /OV RWY 35/TM 0555/FLDURD/TP B763/SK 004-005 FT
```
Report
a routine report filed through MHT
Where
runway 35
Time
05:55 UTC
Height
during the descent
Aircraft
B763
Sky
from 400 ft to 500 ft ft
CRJ7 descending, 24 nm north, 9:09 pm PDT (04:09 UTC): a routine report with nothing remarked on. At the destination end, 24 nm north of the line.
as filed, and in English
```
MHT UA /OV RWY 6/TM 0409/FLDURD/TP CRJ7/SK 006
```
Report
a routine report filed through MHT
Where
runway 6
Time
04:09 UTC
Height
during the descent
Aircraft
CRJ7
Sky
at 600 ft

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 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 19 forecast points nearest it (PDX, YKM, LWS, GPI, GTF, BIL, GGW, MLS, DIK, MOT, GFK, AXN, DLH, GRB, TVC, BUF, SYR, ALB, 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	020° at 1 kt	+1 kt		119 kt	18 h 29 min	9:11 pm EDT (01:11 UTC)
5,500 ft	light and variable	0	3 °C	120 kt	18 h 20 min	9:02 pm EDT (01:02 UTC)
7,500 ft	250° at 3 kt	−3 kt	6 °C	123 kt	17 h 53 min	8:35 pm EDT (00:35 UTC)
9,500 ft	250° at 7 kt	−6 kt	3 °C	126 kt	17 h 27 min	8:09 pm EDT (00:09 UTC)
11,500 ft	240° at 12 kt	−10 kt	0 °C	130 kt	16 h 55 min	7:37 pm EDT (23:37 UTC)
13,500 ft	250° at 15 kt	−13 kt	-4 °C	133 kt	16 h 32 min	7:14 pm EDT (23:14 UTC)
15,500 ft	250° at 18 kt	−16 kt	-8 °C	136 kt	16 h 10 min	6:52 pm EDT (22:52 UTC)
17,500 ft	250° at 21 kt	−20 kt	-11 °C	140 kt	15 h 42 min	6:24 pm EDT (22:24 UTC)
18,000 ft FL180	250° at 21 kt	−20 kt	-12 °C	140 kt	15 h 42 min	6:24 pm EDT (22:24 UTC)
24,000 ft FL240	250° at 24 kt	−22 kt	-23 °C	142 kt	15 h 29 min	6:11 pm EDT (22:11 UTC)
30,000 ft FL300	260° at 29 kt	−28 kt	-37 °C	148 kt	14 h 51 min	5:33 pm EDT (21:33 UTC)
34,000 ft FL340	260° at 37 kt	−36 kt	-43 °C	156 kt	14 h 06 min	4:48 pm EDT (20:48 UTC)
39,000 ft FL390	260° at 51 kt	−49 kt	-49 °C	169 kt	13 h 01 min	3:43 pm EDT (19:43 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
PDX	used from 0 nm out; 25 nm from the line	L/V	030/7 1°	020/12 -6°	020/29 -9°	010/69 -16°	010/81 -25°	360/83 -40°	360/67 -46°	320/29 -42°
YKM	used from 50 nm out; 44 nm from the line	070/10	040/15 -1°	020/27 -8°	030/25 -13°	020/48 -20°	010/83 -27°	010/77 -37°	010/49 -40°	350/14 -41°
LWS	used from 150 nm out; 63 nm from the line	070/10	080/12 -2°	030/12 -6°	080/7 -10°	170/34 -21°	160/46 -32°	200/33 -35°	220/22 -35°	230/18 -38°
GPI	used from 350 nm out; 96 nm from the line		070/19 -5°	100/16 -7°	080/10 -8°	130/8 -19°	170/37 -28°	200/50 -40°	210/43 -40°	220/41 -42°
GTF	used from 400 nm out; 60 nm from the line		070/11	080/15 -7°	110/19 -9°	190/25 -14°	200/34 -23°	200/54 -39°	220/66 -40°	220/77 -44°
BIL	used from 550 nm out; 78 nm from the line		080/13	180/9 -2°	210/38 0°	220/51 -11°	210/46 -22°	210/58 -35°	230/73 -39°	230/72 -45°
GGW	used from 600 nm out; 77 nm from the line		110/23 0°	130/20 -2°	170/24 -3°	230/44 -11°	220/51 -21°	210/52 -39°	220/64 -44°	240/85 -48°
MLS	used from 650 nm out; 50 nm from the line		150/23 2°	190/29 4°	210/44 2°	220/32 -10°	210/36 -21°	200/48 -37°	230/63 -40°	240/71 -47°
DIK	used from 750 nm out; 55 nm from the line		150/24 7°	200/38 6°	220/53 0°	230/51 -9°	230/49 -21°	240/37 -37°	240/47 -44°	250/65 -48°
MOT	used from 900 nm out; 76 nm from the line		120/14 5°	200/20 4°	230/33 1°	250/39 -11°	250/50 -21°	240/61 -37°	250/56 -45°	260/68 -51°
GFK	used from 949 nm out; 92 nm from the line	070/18	100/10 9°	250/11 6°	250/27 1°	250/34 -10°	260/43 -21°	260/39 -36°	260/36 -46°	260/59 -53°
AXN	used from 1099 nm out; 64 nm from the line	100/14	250/21 14°	240/24 12°	240/31 5°	260/36 -10°	260/40 -21°	250/42 -36°	260/48 -45°	260/53 -50°
DLH	used from 1199 nm out; 35 nm from the line	080/28	240/21 15°	250/26 9°	250/32 3°	260/42 -11°	270/40 -21°	260/43 -36°	260/46 -46°	260/65 -54°
GRB	used from 1399 nm out; 103 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°
TVC	used from 1449 nm out; 100 nm from the line	260/31	280/22 15°	290/18 10°	270/13 2°	290/25 -10°	300/35 -21°	310/52 -37°	320/59 -47°	300/84 -54°
BUF	used from 1699 nm out; 168 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°
SYR	used from 1899 nm out; 64 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°
ALB	used from 1999 nm out; 58 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°
BOS	used from 2149 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°

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	Elevation
PDX Portland, OR	departure	no report just now	30 ft
PSC Pasco, WA	150 nm out, 8 nm north of the line, tower	no report just now	410 ft
LWS Lewiston, ID	240 nm out, 3 nm southwest of the line, tower	no report just now	1,442 ft
HLN Helena, MT	450 nm out, 18 nm south of the line, tower	no report just now	3,877 ft
GDV Glendive, MT	740 nm out, 5 nm southeast of the line	no report just now	2,458 ft
FAR Fargo, ND	1069 nm out, 6 nm south of the line, tower	no report just now	901 ft
DLH Duluth, MN	1259 nm out, 11 nm north of the line, tower	no report just now	1,427 ft
SAW Marquette, MI	1459 nm out, 16 nm north of the line, tower	no report just now	1,204 ft
APN Alpena, MI	1629 nm out, 22 nm south of the line, tower	no report just now	689 ft
CYPQ Peterborough,	1859 nm out, 9 nm south of the line	no report just now	628 ft
ASH Nashua, NH	2169 nm out, 14 nm north of the line, tower	no report just now	200 ft
BOS Boston, MA	destination	no report just now	19 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 BOS when you get there the forecast at the estimated arrival, 3:43 pm EDT (19:43 UTC)

BOS has no terminal forecast; use the nearest airport that does.

Temporary flight restrictions on the line or within 25 nm of it

6/8665 9NM E HERMAN, MI, Friday, October 9, 2026 through Tuesday, October 13, 2026 UTC 21 nm from the route, 1419 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZMP
6/8771 NW NEGAUNEE, MI, Saturday, October 10, 2026 through Thursday, October 15, 2026 UTC 24 nm from the route, 1449 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 15 October · ZMP
6/8802 Foxborough, MA, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 19 nm from the route, at the destination end · drones kept away from a public gathering · starts Saturday 17 October · ZBW

Daylight

Sunset at PDX 6:30 pm PDT (01:30 UTC), at BOS 6:07 pm EDT (22:07 UTC) (civil twilight ends 6:35 pm EDT (22:35 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

Radar now, the Pacific Northwest · loop National Weather Service

Radar now, the northern Rockies · loop National Weather Service

Radar now, the upper Mississippi valley · loop National Weather Service

Radar, the whole country · loop National Weather Service

Surface analysis now Weather Prediction Center

Forecast chart, 12 hours ahead Weather Prediction Center

Forecast chart, 24 hours ahead Weather Prediction Center

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: Portland International, General Edward Lawrence Logan International.