Plan a flight · Mon 6:56 am EDT (10:56 UTC)

General Edward Lawrence Logan International to Cyril E King Airport BOS → STT

1,475 nautical miles (1,697 statute miles) south on a straight line, true course 166°, about 181° magnetic at the departure end (variation 15W). At 120 knots that is 11 h 21 min at the quickest height in today's winds (4,500 ft, a 10-knot tailwind), arriving about 6:17 pm AST (22:17 UTC), after sunset at the destination. Right now BOS is IFR, wind from the north (350°) at 9 knots; STT is VFR, wind from the east (090°) at 6 knots. 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: 600 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 259 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 33,000 ft. Over the first 159 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

BCS3 at 10,000 ft, 1 nm southeast, 6:15 am EDT (10:15 UTC): moderate turbulence from 7,000 ft to 9,000 ft, remarks: during the climb ssoxs aid. At the departure end, 1 nm southeast of the line.
as filed, and in English
```
BOS UA /OV BOS/TM 1015/FL100/TP BCS3/TB MOD 070-090/RM DURC SSOXS AID
```
Report
a routine report filed through BOS
Where
over BOS
Time
10:15 UTC
Height
at 10,000 ft
Aircraft
BCS3
Turbulence
moderate from 7,000 ft to 9,000 ft
Remarks
during the climb ssoxs aid
A321 at 9,500 ft, 9 nm northwest, 5:05 am EDT (09:05 UTC): moderate turbulence, remarks: moderate turbulence during the descent jfund arrival from from 9,500 ft to 7,000 ft, smooth below. At the departure end, 9 nm northwest of the line.
as filed, and in English
```
BOS UA /OV BOS350010/TM 0905/FL095/TP A321/TB MOD/RM MOD TB DURD JFUND ARR FROM 095-070, SMOOTH BELOW
```
Report
a routine report filed through BOS
Where
10 nm north (350°) of BOS
Time
09:05 UTC
Height
at 9,500 ft
Aircraft
A321
Turbulence
moderate
Remarks
moderate turbulence during the descent jfund arrival from from 9,500 ft to 7,000 ft, smooth below
MULT at 2,000 ft, 22 nm north, 6:18 am EDT (10:18 UTC): light turbulence from 1,500 ft to 2,000 ft, remarks: during the climb out of KBOS. At the departure end, 22 nm north of the line.
as filed, and in English
```
LWM UA /OV LWM/TM 1018/FL020/TP MULT/TB CONS LGT 020-015/RM DURC OUT OF KBOS
```
Report
a routine report filed through LWM
Where
over LWM
Time
10:18 UTC
Height
at 2,000 ft
Aircraft
MULT
Turbulence
continuous light from 2,000 ft to 1,500 ft
Remarks
during the climb out of KBOS
A21N at 700 ft, 1 nm southeast, 6:00 am EDT (10:00 UTC): a broken layer above 700 ft. At the departure end, 1 nm southeast of the line.
as filed, and in English
```
BOS UA /OV BOS/TM 1000/FL007/TP A21N/SK BKN007
```
Report
a routine report filed through BOS
Where
over BOS
Time
10:00 UTC
Height
at 700 ft
Aircraft
A21N
Sky
a broken layer from 700 ft
B38M at 10,000 ft, 10 nm north, 5:42 am EDT (09:42 UTC): light turbulence, remarks: light turbulence during the climb from 8,000 ft to 10,000 ft. At the departure end, 10 nm north of the line.
as filed, and in English
```
BOS UA /OV BOS020010/TM 0942/FL100/TP B38M/TB LGT/RM LGT TB DURC 080-100
```
Report
a routine report filed through BOS
Where
10 nm north (020°) of BOS
Time
09:42 UTC
Height
at 10,000 ft
Aircraft
B38M
Turbulence
light
Remarks
light turbulence during the climb from 8,000 ft to 10,000 ft

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 5 forecast points nearest it (BOS, ACK, ORF, ILM, MIA). 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	300° at 14 kt	−10 kt		130 kt	11 h 21 min	6:17 pm AST (22:17 UTC)
6,500 ft	290° at 16 kt	−9 kt	13 °C	129 kt	11 h 26 min	6:22 pm AST (22:22 UTC)
8,500 ft	280° at 17 kt	−8 kt	11 °C	128 kt	11 h 31 min	6:27 pm AST (22:27 UTC)
10,500 ft	280° at 17 kt	−8 kt	7 °C	128 kt	11 h 31 min	6:27 pm AST (22:27 UTC)
12,500 ft	280° at 18 kt	−8 kt	4 °C	128 kt	11 h 31 min	6:27 pm AST (22:27 UTC)
14,500 ft	280° at 20 kt	−7 kt	0 °C	127 kt	11 h 37 min	6:33 pm AST (22:33 UTC)
16,500 ft	270° at 23 kt	−6 kt	-4 °C	126 kt	11 h 42 min	6:38 pm AST (22:38 UTC)
18,000 ft FL180	270° at 26 kt	−5 kt	-7 °C	125 kt	11 h 48 min	6:44 pm AST (22:44 UTC)
24,000 ft FL240	260° at 31 kt	−1 kt	-19 °C	121 kt	12 h 11 min	7:07 pm AST (23:07 UTC)
30,000 ft FL300	250° at 48 kt	+7 kt	-33 °C	113 kt	13 h 03 min	7:59 pm AST (23:59 UTC)
34,000 ft FL340	250° at 56 kt	+8 kt	-41 °C	112 kt	13 h 10 min	8:06 pm AST (00:06 UTC)
39,000 ft FL390	250° at 46 kt	+3 kt	-51 °C	117 kt	12 h 36 min	7:32 pm AST (23:32 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°
ACK	used from 50 nm out; 26 nm from the line	340/16	270/32 14°	260/37 9°	260/30 4°	250/41 -9°	250/49 -21°	240/92 -34°	240/107 -42°	240/94 -52°
ORF	used from 448 nm out; 388 nm from the line	310/30	320/27 11°	310/30 8°	320/30 3°	290/36 -8°	270/40 -21°	250/52 -32°	250/50 -39°	260/42 -48°
ILM	used from 698 nm out; 562 nm from the line	300/18	300/22 13°	300/21 8°	290/28 4°	280/38 -7°	270/40 -18°	250/49 -32°	250/50 -40°	270/33 -50°
MIA	used from 947 nm out; 732 nm from the line	L/V	L/V 17°	L/V 13°	L/V 8°	270/6 -6°	250/9 -17°	290/17 -32°	280/25 -41°	280/21 -52°

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	IFR Sky: a broken layer at 700 feet, overcast at 1,200 feet Weather: mist	from the north (350°) at 9 knots	6 mi	700 ft	19 ft	5:54 am EDT (09:54 UTC)
MVY Vineyard Haven, MA	60 nm out, 3 nm east of the line, tower	IFR Sky: overcast at 500 feet Weather: light rain, mist	from the north (010°) at 10 knots, gusting to 17	4 mi	500 ft	66 ft	10:53 UTC
STT Charlotte Amalie, VI	destination	VFR	from the east (090°) at 6 knots	10+ mi	none	23 ft	4:53 am AST (08:53 UTC)

The highest airport on this list sits at 66 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At STT when you get there the forecast at the estimated arrival, 6:17 pm AST (22:17 UTC)

Wind from the east-southeast at 10 knots, visibility more than 6 miles, showers nearby, scattered clouds at 3,500 feet VFR

The whole forecast for STT

From Mon 2:00 am AST (06:00 UTC): wind from the east at 6 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 5,000 feet
From Mon 9:00 am AST (13:00 UTC): wind from the east-southeast at 10 knots, visibility more than 6 miles, showers nearby, scattered clouds at 3,500 feet
From Mon 7:00 pm AST (23:00 UTC): wind from the east at 7 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, scattered clouds at 5,000 feet

The forecast for BOS, the departure

From Mon 4:00 am EDT (08:00 UTC): wind from the north-northeast at 12 knots, visibility 6 miles, mist, overcast at 800 feet
From Mon 11:00 am EDT (15:00 UTC): wind from the north at 8 knots, visibility more than 6 miles, scattered clouds at 15,000 feet
From Mon 3:00 pm EDT (19:00 UTC): wind from the northwest at 7 knots, visibility more than 6 miles, scattered clouds at 15,000 feet
From Mon 11:00 pm EDT (03:00 UTC): wind from the northeast at 10 knots, visibility more than 6 miles, scattered clouds at 4,500 feet

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 14 nm from the route, at the departure end · drones kept away from a public gathering · starts Saturday 17 October · ZBW
6/2698 VIEQUES, PR, Monday, January 19, 2026 through Friday, December 18, 2026 UTC 20 nm from the route, at the destination end · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 18 December · ZSU

Daylight

Sunset at BOS 6:07 pm EDT (22:07 UTC), at STT 5:59 pm AST (21:59 UTC) (civil twilight ends 6:21 pm AST (22:21 UTC)). At 120 knots the arrival at STT is after sunset there (5:59 pm AST (21:59 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 Northeast · loop National Weather Service

Radar now, the Caribbean · 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: General Edward Lawrence Logan International, Cyril E King Airport.