Plan a flight · Mon 10:13 am EDT (14:13 UTC)

Buffalo Niagara International to Nantucket Memorial BUF → ACK

399 nautical miles (459 statute miles) east on a straight line, true course 102°, about 113° magnetic at the departure end (variation 11W). At 120 knots that is 2 h 26 min at the quickest height in today's winds (39,000 ft, a 44-knot tailwind), arriving about 12:39 pm EDT (16:39 UTC). Right now BUF is IFR, wind from the west-southwest (240°) at 8 knots; ACK is IFR, wind from the north-northeast (030°) at 21 knots, gusting to 28. 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 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 170 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 60 to 220 nm out.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 40,000 ft. Over the last 180 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). Over the last 120 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 BUF.

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

A321 at 35,000 ft, 46 nm north, 7:16 am EDT (11:16 UTC): moderate chop turbulence above 35,000 ft. 90 nm along the route, 46 nm north of the line.
as filed, and in English
```
SYR UA /OV SYR320020/TM 1116/FL350/TP A321/TB OCNL MOD CHOP 350
```
Report
a routine report filed through SYR
Where
20 nm northwest (320°) of SYR
Time
11:16 UTC
Height
at 35,000 ft
Aircraft
A321
Turbulence
occasional moderate chop at 35,000 ft
E75L at 33,000 ft, 31 nm north, 9:25 am EDT (13:25 UTC): moderate turbulence. 120 nm along the route, 31 nm north of the line.
as filed, and in English
```
SYR UA /OV SYR140015/TM 1325/FL330/TP E75L/TB CONS MOD 350 CONS LGT 330
```
Report
a routine report filed through SYR
Where
15 nm southeast (140°) of SYR
Time
13:25 UTC
Height
at 33,000 ft
Aircraft
E75L
Turbulence
continuous moderate at 35,000 ft continuous light at 33,000 ft
CL30 at 34,000 ft, 13 nm northeast, 9:56 am EDT (13:56 UTC): moderate turbulence. 160 nm along the route, 13 nm northeast of the line.
as filed, and in English
```
OIC UA /OV N66/TM 1356/FL340/TP CL30/TB MOD
```
Report
a routine report filed through OIC
Where
over N66
Time
13:56 UTC
Height
at 34,000 ft
Aircraft
CL30
Turbulence
moderate
A320 at 24,000 ft, 35 nm northeast, 9:42 am EDT (13:42 UTC): moderate turbulence. 299 nm along the route, 35 nm northeast of the line.
as filed, and in English
```
ORH UA /OV ORH/TM 1342/FL240/TP A320/TB MOD 240-270 CONS LGT 280-ABV
```
Report
a routine report filed through ORH
Where
over ORH
Time
13:42 UTC
Height
at 24,000 ft
Aircraft
A320
Turbulence
moderate from 24,000 ft to 27,000 ft continuous light 280-ABV
BCS3 at 5,000 ft, 11 nm south, 9:25 am EDT (13:25 UTC): moderate chop turbulence from 3,000 ft to 5,000 ft. 379 nm along the route, 11 nm south of the line.
as filed, and in English
```
ACK UA /OV CLAMY/TM 1325/FL050/TP BCS3/TB MOD CHOP 050-030
```
Report
a routine report filed through ACK
Where
clamy
Time
13:25 UTC
Height
at 5,000 ft
Aircraft
BCS3
Turbulence
moderate chop from 5,000 ft to 3,000 ft
CRJ9 at 1,100 ft, 0 nm southwest, 9:26 am EDT (13:26 UTC): remarks: during the descent, ils runway 23. At the departure end, 0 nm southwest of the line.
as filed, and in English
```
BUF UA /OV KBUF/TM 1326/FL011/TP CRJ9/SK BASES 600 AGL/RM DURD, ILS RWY 23
```
Report
a routine report filed through BUF
Where
over KBUF
Time
13:26 UTC
Height
at 1,100 ft
Aircraft
CRJ9
Sky
bases 60,000 ft above ground
Remarks
during the descent, ils runway 23
CRJ9 at 1,300 ft, 6 nm southwest, 9:13 am EDT (13:13 UTC): a routine report with nothing remarked on. At the departure end, 6 nm southwest of the line.
as filed, and in English
```
BUF UA /OV PLAZZ/TM 1313/FL013/TP CRJ9/SK BNK013 TOPS 033
```
Report
a routine report filed through BUF
Where
plazz
Time
13:13 UTC
Height
at 1,300 ft
Aircraft
CRJ9
Sky
BNK013 tops 3,300 ft
B737 at 1,100 ft, 0 nm southwest, 8:45 am EDT (12:45 UTC): remarks: during the descent, ils runway 23. At the departure end, 0 nm southwest of the line.
as filed, and in English
```
BUF UA /OV KBUF/TM 1245/FL011/TP B737/SK B011/RM DURD, ILS RWY 23
```
Report
a routine report filed through BUF
Where
over KBUF
Time
12:45 UTC
Height
at 1,100 ft
Aircraft
B737
Sky
B011
Remarks
during the descent, ils runway 23
B737 at 3,200 ft, 10 nm northeast, 8:40 am EDT (12:40 UTC): a routine report with nothing remarked on. At the departure end, 10 nm northeast of the line.
as filed, and in English
```
BUF UA /OV BUF050010/TM 1240/FL032/TP B737/SK BASES 011 TOPS 032
```
Report
a routine report filed through BUF
Where
10 nm northeast (050°) of BUF
Time
12:40 UTC
Height
at 3,200 ft
Aircraft
B737
Sky
bases 1,100 ft tops 3,200 ft
B38M at 37,000 ft, 17 nm south, 7:36 am EDT (11:36 UTC): -48 °C, wind 335° at 62 knots, remarks: produced by skypath. 20 nm along the route, 17 nm south of the line.
as filed, and in English
```
OLE UA /OV GEE249029 /TM 1136 /FL370 /TP B38M /TA M48 /WV 33562KT /RM PRODUCED BY SKYPATH
```
Report
a routine report filed through OLE
Where
29 nm west (249°) of GEE
Time
11:36 UTC
Height
at 37,000 ft
Aircraft
B38M
Temperature
−48 °C
Wind
from 335° at 62 knots
Remarks
produced by skypath
E75L at 3,500 ft, 20 nm north, 9:25 am EDT (13:25 UTC): a routine report with nothing remarked on. 40 nm along the route, 20 nm north of the line.
as filed, and in English
```
ROC UA /OV ROC/TM 1325/FL035/TP E75L/SK TOPS 035 BASES 006
```
Report
a routine report filed through ROC
Where
over ROC
Time
13:25 UTC
Height
at 3,500 ft
Aircraft
E75L
Sky
tops 3,500 ft bases 600 ft
F2TH at 800 ft, 16 nm northeast, 8:13 am EDT (12:13 UTC): overcast above 800 ft, remarks: tops 3,700 ft bases 800 ft. 40 nm along the route, 16 nm northeast of the line.
as filed, and in English
```
ROC UA /OV ROC190005/TM 1213/FL008/TP F2TH/SK 008 OVC/RM TOPS 037 BASES 008
```
Report
a routine report filed through ROC
Where
5 nm south (190°) of ROC
Time
12:13 UTC
Height
at 800 ft
Aircraft
F2TH
Sky
at 800 ft overcast
Remarks
tops 3,700 ft bases 800 ft
B38M at 33,000 ft, 4 nm northeast, 7:45 am EDT (11:45 UTC): -44 °C, wind 345° at 74 knots, remarks: produced by skypath. 90 nm along the route, 4 nm northeast of the line.
as filed, and in English
```
ITH UA /OV SYR225036 /TM 1145 /FL330 /TP B38M /TA M44 /WV 34574KT /RM PRODUCED BY SKYPATH
```
Report
a routine report filed through ITH
Where
36 nm southwest (225°) of SYR
Time
11:45 UTC
Height
at 33,000 ft
Aircraft
B38M
Temperature
−44 °C
Wind
from 345° at 74 knots
Remarks
produced by skypath
E145 descending, 6 nm southeast, 9:53 am EDT (13:53 UTC): overcast above 30,000 ft. 100 nm along the route, 6 nm southeast of the line.
as filed, and in English
```
ITH UA /OV KITH/TM 1353/FLDURD/TP E145/SK OVC003
```
Report
a routine report filed through ITH
Where
over KITH
Time
13:53 UTC
Height
during the descent
Aircraft
E145
Sky
overcast from 300 ft

16 more routine reports are on the map.

Winds aloft along the route, and the time en route the forecast for use 14:00–21:00 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 5 forecast points nearest it (BUF, SYR, ALB, BDL, ACK). 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	310° at 20 kt	−18 kt		138 kt	2 h 53 min	1:06 pm EDT (17:06 UTC)
5,500 ft	320° at 23 kt	−19 kt		139 kt	2 h 52 min	1:05 pm EDT (17:05 UTC)
7,500 ft	320° at 26 kt	−20 kt	10 °C	140 kt	2 h 51 min	1:04 pm EDT (17:04 UTC)
9,500 ft	320° at 28 kt	−22 kt	7 °C	142 kt	2 h 49 min	1:02 pm EDT (17:02 UTC)
11,500 ft	330° at 28 kt	−21 kt	4 °C	141 kt	2 h 50 min	1:03 pm EDT (17:03 UTC)
13,500 ft	320° at 29 kt	−22 kt	0 °C	142 kt	2 h 49 min	1:02 pm EDT (17:02 UTC)
15,500 ft	320° at 29 kt	−24 kt	-4 °C	144 kt	2 h 46 min	12:59 pm EDT (16:59 UTC)
17,500 ft	320° at 30 kt	−26 kt	-8 °C	146 kt	2 h 44 min	12:57 pm EDT (16:57 UTC)
18,000 ft FL180	310° at 30 kt	−26 kt	-9 °C	146 kt	2 h 44 min	12:57 pm EDT (16:57 UTC)
24,000 ft FL240	310° at 37 kt	−33 kt	-21 °C	153 kt	2 h 36 min	12:49 pm EDT (16:49 UTC)
30,000 ft FL300	310° at 41 kt	−36 kt	-37 °C	156 kt	2 h 33 min	12:46 pm EDT (16:46 UTC)
34,000 ft FL340	320° at 49 kt	−42 kt	-46 °C	162 kt	2 h 28 min	12:41 pm EDT (16:41 UTC)
39,000 ft FL390	310° at 49 kt	−44 kt	-53 °C	164 kt	2 h 26 min	12:39 pm EDT (16:39 UTC)

Based on data from the 12th at 12:00 UTC; valid on the 12th at 18:00 UTC for use 14:00 to 21:00 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
BUF	used from 0 nm out; 25 nm from the line	270/25	300/28 14°	300/29 8°	310/29 2°	300/30 -9°	290/33 -21°	290/44 -37°	290/56 -47°	300/62 -51°
SYR	used from 50 nm out; 50 nm from the line	290/24	310/27 13°	310/34 8°	320/32 2°	300/32 -10°	300/40 -21°	300/45 -37°	310/58 -47°	310/64 -54°
ALB	used from 150 nm out; 55 nm from the line	310/19	330/25 12°	330/29 8°	330/29 3°	320/34 -10°	310/42 -21°	320/43 -37°	330/55 -47°	320/52 -54°
BDL	used from 249 nm out; 6 nm from the line	330/20	340/23 12°	340/25 8°	340/27 3°	330/30 -9°	330/39 -21°	340/48 -37°	340/53 -46°	320/33 -55°
ACK	used from 349 nm out; 25 nm from the line	350/16	330/18 12°	330/26 7°	330/27 2°	320/25 -9°	300/27 -22°	300/31 -38°	270/36 -44°	270/45 -50°

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
BUF Buffalo, NY	departure	IFR Sky: a broken layer at 900 feet, overcast at 1,300 feet Weather: light drizzle	from the west-southwest (240°) at 8 knots	9 mi	900 ft	726 ft	9:54 am EDT (13:54 UTC)
ROC Rochester, NY	40 nm out, 21 nm north of the line, tower	IFR Sky: overcast at 600 feet Weather: mist	variable at 6 knots	5 mi	600 ft	558 ft	14:07 UTC
PEO Penn Yan, NY	80 nm out, 4 nm west of the line	IFR Sky: a broken layer at 800 feet, overcast at 2,400 feet	from the west (270°) at 4 knots	10+ mi	800 ft	988 ft	13:53 UTC
ITH Ithaca, NY	100 nm out, 6 nm southeast of the line, tower	low IFR Sky: overcast at 300 feet Weather: mist	from the northwest (310°) at 5 knots	4 mi	300 ft	1,099 ft	13:56 UTC
OIC Norwich, NY	140 nm out, 10 nm northeast of the line	marginal VFR Sky: a few clouds at 700 feet, a broken layer at 1,300 feet, overcast at 2,800 feet	from the south-southeast (150°) at 2 knots	10+ mi	1,300 ft	1,024 ft	13:55 UTC
GBR Great Barrington, MA	239 nm out, 11 nm north of the line	no report just now				739 ft
HFD Hartford, CT	279 nm out, 6 nm south of the line, tower	marginal VFR Sky: a few clouds at 1,200 feet, overcast at 2,100 feet	from the north (010°) at 4 knots	10+ mi	2,100 ft	18 ft	13:53 UTC
OQU North Kingstown, RI	339 nm out, 5 nm northwest of the line, tower	reported, no category	from the north (350°) at 11 knots		800 ft	18 ft	13:55 UTC
MVY Vineyard Haven, MA	369 nm out, 4 nm east of the line, tower	IFR Sky: overcast at 500 feet	from the north (010°) at 14 knots, gusting to 26	10+ mi	500 ft	66 ft	13:53 UTC
ACK Nantucket, MA	destination	IFR Sky: overcast at 500 feet	from the north-northeast (030°) at 21 knots, gusting to 28	8 mi	500 ft	46 ft	9:53 am EDT (13:53 UTC)

The highest airport on this list sits at 1,099 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At ACK when you get there the forecast at the estimated arrival, 12:39 pm EDT (16:39 UTC)

Wind from the north-northeast at 23 knots, gusting to 30, visibility 6 miles, mist, overcast at 400 feet low IFR

The whole forecast for ACK

From Mon 10:00 am EDT (14:00 UTC): wind from the north-northeast at 23 knots, gusting to 30, visibility 6 miles, mist, overcast at 400 feet
From Mon 4:00 pm EDT (20:00 UTC): wind from the north at 10 knots, gusting to 17, visibility more than 6 miles, scattered clouds at 3,000 feet
From Tue 1:00 am EDT (05:00 UTC): wind from the north-northeast at 5 knots, visibility more than 6 miles, a broken layer at 2,500 feet
From Tue 5:00 am EDT (09:00 UTC): wind from the east-northeast at 10 knots, gusting to 17, visibility 6 miles, light rain, mist, overcast at 800 feet

The forecast for BUF, the departure

From Mon 8:00 am EDT (12:00 UTC): wind from the southwest at 4 knots, visibility more than 6 miles, scattered clouds at 700 feet, overcast at 1,500 feet
From Mon 11:00 am EDT (15:00 UTC): wind from the west-southwest at 6 knots, visibility more than 6 miles, overcast at 1,200 feet
From Mon 2:00 pm EDT (18:00 UTC): wind from the west-southwest at 10 knots, gusting to 18, visibility more than 6 miles, a broken layer at 3,000 feet
From Mon 7:00 pm EDT (23:00 UTC): wind from the southwest at 8 knots, visibility more than 6 miles, a broken layer at 20,000 feet
From Mon 9:00 pm EDT (01:00 UTC): wind from the south-southwest at 6 knots, visibility more than 6 miles, low-level wind shear, scattered clouds at 20,000 feet
From Tue 5:00 am EDT (09:00 UTC): wind from the southwest at 8 knots, visibility more than 6 miles, scattered clouds at 9,000 feet
30% chance between Tue 6:00 am EDT (10:00 UTC) and 8:00 am EDT (12:00 UTC): visibility 4 miles, light rain showers, a broken layer at 7,000 feet

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

6/7153 North Sicuate, RI, Saturday, October 10, 2026 through Monday, October 12, 2026 UTC 10 nm from the route, 319 nm along the route · drones kept away from a public gathering · until 12 October · ZBW

Daylight

Sunset at BUF 6:37 pm EDT (22:37 UTC), at ACK 6:04 pm EDT (22:04 UTC) (civil twilight ends 6:32 pm EDT (22:32 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, 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: Buffalo Niagara International, Nantucket Memorial.