Plan a flight · Sun 9:00 pm EDT (01:00 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 16 min at the quickest height in today's winds (39,000 ft, a 56-knot tailwind), arriving about 11:16 pm EDT (03:16 UTC), after sunset at the destination. Right now BUF is VFR, wind from the east (090°) at 7 knots; ACK is VFR, wind from the east-southeast (110°) at 17 knots, gusting to 25. 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 TANGO 2W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the whole route.
AIRMET ZULU 1C: moderate icing up to 24,000 ft. Over the route from 20 to 289 nm out.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the route from 20 to 289 nm out.
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 route from 50 to 369 nm out.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 60 to 220 nm out.
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 90 to 150 nm out.

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

urgent PC12 at 11,000 ft, 6 nm southwest, 7:29 pm EDT (23:29 UTC): moderate turbulence, remarks: during the descent on wipor arrival. 309 nm along the route, 6 nm southwest of the line.
as filed, and in English
```
IJD UUA /OV ORW340007/TM 2329/FL110/TP PC12/TB MOD 110-100 SEV 100-080/RM DURD ON WIPOR ARR
```
Report
an urgent report filed through IJD
Where
7 nm north (340°) of ORW
Time
23:29 UTC
Height
at 11,000 ft
Aircraft
PC12
Turbulence
moderate from 11,000 ft to 10,000 ft severe from 10,000 ft to 8,000 ft
Remarks
during the descent on wipor arrival
E170 at 25,000 ft, 1 nm south, 6:37 pm EDT (22:37 UTC): moderate turbulence above 25,000 ft, remarks: zob. At the departure end, 1 nm south of the line.
as filed, and in English
```
BUF UA /OV BUF120010/TM 2237/FL250/TP E170/TB MOD 250/RM ZOB
```
Report
a routine report filed through BUF
Where
10 nm southeast (120°) of BUF
Time
22:37 UTC
Height
at 25,000 ft
Aircraft
E170
Turbulence
moderate at 25,000 ft
Remarks
zob
DH8D at 19,000 ft, 20 nm north, 7:35 pm EDT (23:35 UTC): moderate chop turbulence, remarks: zob. 40 nm along the route, 20 nm north of the line.
as filed, and in English
```
ROC UA /OV ROC/TM 2335/FL190/TP DH8D/TB CONS MOD CHOP/RM ZOB
```
Report
a routine report filed through ROC
Where
over ROC
Time
23:35 UTC
Height
at 19,000 ft
Aircraft
DH8D
Turbulence
continuous moderate chop
Remarks
zob
CRJ7 at 33,000 ft, 6 nm southeast, 6:31 pm EDT (22:31 UTC): moderate turbulence. 100 nm along the route, 6 nm southeast of the line.
as filed, and in English
```
ITH UA /OV ITH/TM 2231/FL330/TP CRJ7/TB MOD
```
Report
a routine report filed through ITH
Where
over ITH
Time
22:31 UTC
Height
at 33,000 ft
Aircraft
CRJ7
Turbulence
moderate
E75L at 31,000 ft, 6 nm southeast, 6:27 pm EDT (22:27 UTC): moderate turbulence. 100 nm along the route, 6 nm southeast of the line.
as filed, and in English
```
ITH UA /OV ITH/TM 2227/FL310/TP E75L/TB CONS MOD
```
Report
a routine report filed through ITH
Where
over ITH
Time
22:27 UTC
Height
at 31,000 ft
Aircraft
E75L
Turbulence
continuous moderate
E75 at 34,000 ft, 40 nm north, 7:15 pm EDT (23:15 UTC): moderate turbulence. 150 nm along the route, 40 nm north of the line.
as filed, and in English
```
RME UA /OV UCA/TM 2315/FL340/TP E75/TB CONS MOD
```
Report
a routine report filed through RME
Where
over UCA
Time
23:15 UTC
Height
at 34,000 ft
Aircraft
E75
Turbulence
continuous moderate
A21N at 35,000 ft, 40 nm north, 6:57 pm EDT (22:57 UTC): moderate turbulence. 150 nm along the route, 40 nm north of the line.
as filed, and in English
```
RME UA /OV UCA/TM 2257/FL350/TP A21N/TB CONS MOD
```
Report
a routine report filed through RME
Where
over UCA
Time
22:57 UTC
Height
at 35,000 ft
Aircraft
A21N
Turbulence
continuous moderate
PC12 at 8,000 ft, 4 nm southwest, 7:29 pm EDT (23:29 UTC): moderate clear-air turbulence. 210 nm along the route, 4 nm southwest of the line.
as filed, and in English
```
POU UA /OV IGN340030/TM 2329/FL080/TP PC12/TB MOD CAT
```
Report
a routine report filed through POU
Where
30 nm north (340°) of IGN
Time
23:29 UTC
Height
at 8,000 ft
Aircraft
PC12
Turbulence
moderate clear-air turbulence
E75S at 10,000 ft, 3 nm southwest, 7:53 pm EDT (23:53 UTC): moderate clear-air turbulence. 229 nm along the route, 3 nm southwest of the line.
as filed, and in English
```
POU UA /OV PWL350015/TM 2353/FL100/TP E75S/TB MOD CAT
```
Report
a routine report filed through POU
Where
15 nm north (350°) of PWL
Time
23:53 UTC
Height
at 10,000 ft
Aircraft
E75S
Turbulence
moderate clear-air turbulence
A388 at 34,000 ft, 13 nm north, 7:19 pm EDT (23:19 UTC): moderate chop turbulence. 229 nm along the route, 13 nm north of the line.
as filed, and in English
```
POU UA /OV PWL010030/TM 2319/FL340/TP A388/TB MOD CHOP
```
Report
a routine report filed through POU
Where
30 nm north (010°) of PWL
Time
23:19 UTC
Height
at 34,000 ft
Aircraft
A388
Turbulence
moderate chop
PC12 at 10,000 ft, 5 nm south, 7:53 pm EDT (23:53 UTC): moderate turbulence. 299 nm along the route, 5 nm south of the line.
as filed, and in English
```
BDL UA /OV HFD100017/TM 2353/FL100/TP PC12/TB MOD
```
Report
a routine report filed through BDL
Where
17 nm east (100°) of HFD
Time
23:53 UTC
Height
at 10,000 ft
Aircraft
PC12
Turbulence
moderate
E75S at 16,000 ft, 20 nm north, 7:35 pm EDT (23:35 UTC): moderate clear-air turbulence above 16,000 ft, remarks: moderate in +ra to light chop. 309 nm along the route, 20 nm north of the line.
as filed, and in English
```
SFZ UA /OV PUT360003/TM 2335/FL160/TP E75S/TB MOD 160 CAT/RM MOD IN +RA TO LGT CHOP
```
Report
a routine report filed through SFZ
Where
3 nm north (360°) of PUT
Time
23:35 UTC
Height
at 16,000 ft
Aircraft
E75S
Turbulence
moderate at 16,000 ft clear-air turbulence
Remarks
moderate in +ra to light chop
BCS3 at 8,000 ft, 37 nm southwest, 6:58 pm EDT (22:58 UTC): moderate turbulence, remarks: during the descent. 309 nm along the route, 37 nm southwest of the line.
as filed, and in English
```
JPX UA /OV JPX360010/TM 2258/FL080/TP BCS3/TB MOD/RM DURD
```
Report
a routine report filed through JPX
Where
10 nm north (360°) of JPX
Time
22:58 UTC
Height
at 8,000 ft
Aircraft
BCS3
Turbulence
moderate
Remarks
during the descent
BCS3 at 12,000 ft, 32 nm northeast, 8:11 pm EDT (00:11 UTC): moderate turbulence, rain, remarks: ssoxs dept from 12,000 ft to 16,000 ft. 339 nm along the route, 32 nm northeast of the line.
as filed, and in English
```
BOS UA /OV BOS200020/TM 0011/FL120/TP BCS3/WX RA+/TB MOD/RM SSOXS DEPT 120-160
```
Report
a routine report filed through BOS
Where
20 nm south (200°) of BOS
Time
00:11 UTC
Height
at 12,000 ft
Aircraft
BCS3
Weather
ra+
Turbulence
moderate
Remarks
ssoxs dept from 12,000 ft to 16,000 ft

16 more routine reports are on the map.

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 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	160° at 22 kt	+13 kt		107 kt	3 h 44 min	12:44 am EDT (04:44 UTC)
5,500 ft	180° at 20 kt	+5 kt		115 kt	3 h 28 min	12:28 am EDT (04:28 UTC)
7,500 ft	200° at 20 kt	−2 kt	8 °C	122 kt	3 h 16 min	12:16 am EDT (04:16 UTC)
9,500 ft	220° at 21 kt	−8 kt	6 °C	128 kt	3 h 07 min	12:07 am EDT (04:07 UTC)
11,500 ft	230° at 19 kt	−12 kt	3 °C	132 kt	3 h 01 min	12:01 am EDT (04:01 UTC)
13,500 ft	240° at 20 kt	−15 kt	-1 °C	135 kt	2 h 57 min	11:57 pm EDT (03:57 UTC)
15,500 ft	240° at 23 kt	−17 kt	-4 °C	137 kt	2 h 55 min	11:55 pm EDT (03:55 UTC)
17,500 ft	250° at 25 kt	−20 kt	-8 °C	140 kt	2 h 51 min	11:51 pm EDT (03:51 UTC)
18,000 ft FL180	250° at 26 kt	−21 kt	-9 °C	141 kt	2 h 50 min	11:50 pm EDT (03:50 UTC)
24,000 ft FL240	240° at 38 kt	−26 kt	-19 °C	146 kt	2 h 44 min	11:44 pm EDT (03:44 UTC)
30,000 ft FL300	230° at 60 kt	−35 kt	-34 °C	155 kt	2 h 34 min	11:34 pm EDT (03:34 UTC)
34,000 ft FL340	240° at 80 kt	−55 kt	-42 °C	175 kt	2 h 17 min	11:17 pm EDT (03:17 UTC)
39,000 ft FL390	240° at 83 kt	−56 kt	-53 °C	176 kt	2 h 16 min	11:16 pm EDT (03:16 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
BUF	used from 0 nm out; 25 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°
SYR	used from 50 nm out; 50 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°
ALB	used from 150 nm out; 55 nm from the line	160/27	190/16 9°	200/29 7°	230/21 3°	240/24 -9°	240/43 -19°	230/65 -33°	240/91 -42°	230/99 -53°
BDL	used from 249 nm out; 6 nm from the line	140/28	180/29 10°	220/38 8°	250/30 3°	250/40 -8°	240/46 -18°	240/58 -32°	240/80 -41°	240/89 -55°
ACK	used from 349 nm out; 25 nm from the line	150/19	170/30 8°	210/31 9°	230/42 3°	250/44 -7°	250/50 -17°	240/62 -32°	250/71 -42°	250/86 -55°

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	VFR Sky: a broken layer at 5,000 feet, a broken layer at 10,000 feet	from the east (090°) at 7 knots	10+ mi	5,000 ft	726 ft	8:54 pm EDT (00:54 UTC)
ROC Rochester, NY	40 nm out, 21 nm north of the line, tower	VFR Sky: scattered clouds at 400 feet, a broken layer at 5,000 feet, overcast at 6,500 feet	from the east-southeast (110°) at 5 knots	10+ mi	5,000 ft	558 ft	00:54 UTC
PEO Penn Yan, NY	80 nm out, 4 nm west of the line	marginal VFR Sky: a broken layer at 4,200 feet, overcast at 5,000 feet Weather: light rain, mist	calm	5 mi	4,200 ft	988 ft	00:53 UTC
ITH Ithaca, NY	100 nm out, 6 nm southeast of the line, tower	IFR Sky: a broken layer at 700 feet, overcast at 3,800 feet Weather: rain	calm	7 mi	700 ft	1,099 ft	00:31 UTC
OIC Norwich, NY	140 nm out, 10 nm northeast of the line	marginal VFR Sky: scattered clouds at 600 feet, scattered clouds at 4,600 feet, a broken layer at 5,500 feet Weather: rain, mist	from the west (280°) at 2 knots	4 mi	5,500 ft	1,024 ft	23:35 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: scattered clouds at 900 feet, overcast at 1,500 feet Weather: heavy rain, mist	from the north (010°) at 7 knots	4 mi	1,500 ft	18 ft	00:53 UTC
OQU North Kingstown, RI	339 nm out, 5 nm northwest of the line, tower	reported, no category	from the northeast (040°) at 17 knots		700 ft	18 ft	00:35 UTC
MVY Vineyard Haven, MA	369 nm out, 4 nm east of the line, tower	IFR Sky: overcast at 800 feet Weather: rain	from the east (090°) at 10 knots	10+ mi	800 ft	66 ft	00:53 UTC
ACK Nantucket, MA	destination	VFR Sky: a few clouds at 3,800 feet, overcast at 4,800 feet Weather: light rain	from the east-southeast (110°) at 17 knots, gusting to 25	9 mi	4,800 ft	46 ft	8:53 pm EDT (00:53 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, 11:16 pm EDT (03:16 UTC)

Wind from the east at 14 knots, gusting to 24, visibility 2 miles, rain, mist, overcast at 1,000 feet IFR

The whole forecast for ACK

From Sun 8:00 pm EDT (00:00 UTC): wind from the east at 11 knots, visibility more than 6 miles, light rain, a few clouds at 2,400 feet, scattered clouds at 3,500 feet and more above
From Sun 10:00 pm EDT (02:00 UTC): wind from the east at 14 knots, gusting to 24, visibility 2 miles, rain, mist, overcast at 1,000 feet
From Mon 1:00 am EDT (05:00 UTC): wind from the east at 16 knots, gusting to 23, visibility 3 miles, rain, mist, overcast at 300 feet
From Mon 3:00 am EDT (07:00 UTC): wind from the east-northeast at 15 knots, visibility 1 mile, light rain showers, mist, overcast at 300 feet
From Mon 5:00 am EDT (09:00 UTC): wind from the north-northeast at 15 knots, visibility ¾ mile, mist, overcast at 300 feet
30% chance between Mon 5:00 am EDT (09:00 UTC) and 6:00 am EDT (10:00 UTC): visibility ¾ mile, light rain showers, mist, overcast at 100 feet
From Mon 11:00 am EDT (15:00 UTC): wind from the north-northeast at 15 knots, visibility more than 6 miles, a broken layer at 800 feet
From Mon 4:00 pm EDT (20:00 UTC): wind from the north at 13 knots, gusting to 21, visibility more than 6 miles, scattered clouds at 3,000 feet

The forecast for BUF, the departure

From Sun 8:00 pm EDT (00:00 UTC): wind from the east at 4 knots, visibility more than 6 miles, overcast at 3,000 feet
30% chance between Sun 8:00 pm EDT (00:00 UTC) and 10:00 pm EDT (02:00 UTC): visibility 4 miles, light rain, overcast at 1,500 feet
From Sun 10:00 pm EDT (02:00 UTC): wind calm, visibility more than 6 miles, overcast at 3,500 feet
From Mon 2:00 am EDT (06:00 UTC): wind calm, visibility 6 miles, mist, overcast at 300 feet
From Mon 9:00 am EDT (13:00 UTC): wind from the west-southwest at 5 knots, visibility more than 6 miles, overcast at 1,500 feet
From Mon 1:00 pm EDT (17:00 UTC): wind from the west-southwest at 7 knots, visibility more than 6 miles, a broken layer at 2,000 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)). At 120 knots the arrival at ACK is before sunrise there (6:48 am EDT (10:48 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.