Plan a flight · Mon 9:09 am EDT (13:09 UTC)

Gerald R Ford International to General Edward Lawrence Logan International GRR → BOS

641 nautical miles (738 statute miles) east on a straight line, true course 088°, about 094° magnetic at the departure end (variation 6W). At 120 knots that is 4 h at the quickest height in today's winds (39,000 ft, a 40-knot tailwind), arriving about 1:09 pm EDT (17:09 UTC). Right now GRR is VFR, wind from the south (180°) at 5 knots; BOS is IFR, wind from the north (350°) at 5 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: 147 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 last 602 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 33,000 ft. Over the last 345 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 375 to 552 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 GRR.

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

A321 at 35,000 ft, 35 nm north, 7:16 am EDT (11:16 UTC): moderate chop turbulence above 35,000 ft. 395 nm along the route, 35 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
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 destination 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
B739 at 34,000 ft, 26 nm north, 7:49 am EDT (11:49 UTC): no turbulence. 69 nm along the route, 26 nm north of the line.
as filed, and in English
```
FNT UA /OV FNT340025/TM 1149/FL340/TP B739/TB NEG
```
Report
a routine report filed through FNT
Where
25 nm north (340°) of FNT
Time
11:49 UTC
Height
at 34,000 ft
Aircraft
B739
Turbulence
none
C172 at 3,000 ft, 44 nm south, 8:41 am EDT (12:41 UTC): overcast from 1,000 ft to 1,500 ft; clear from 1,500 ft to 60,000 ft, dust storm. 89 nm along the route, 44 nm south of the line.
as filed, and in English
```
DTW UA /OV DXO 270010/TM 1241/FL030/TP C172/SK 010 OVC 015/WX VIS 1 MI BLO CLOUDS CLR ABV
```
Report
a routine report filed through DTW
Where
10 nm west (270°) of DXO
Time
12:41 UTC
Height
at 3,000 ft
Aircraft
C172
Sky
at 1,000 ft overcast at 1,500 ft
Weather
visibility, 1, shallow, below, cl ou dust storm, clear, above
A320 at 2,000 ft, 45 nm south, 8:36 am EDT (12:36 UTC): a routine report with nothing remarked on. 89 nm along the route, 45 nm south of the line.
as filed, and in English
```
DTW UA /OV DXO228003/TM 1236/FL020/TP A320/SK B003 T015
```
Report
a routine report filed through DTW
Where
3 nm southwest (228°) of DXO
Time
12:36 UTC
Height
at 2,000 ft
Aircraft
A320
Sky
B003 T015
B737 at 7,000 ft, 44 nm south, 8:22 am EDT (12:22 UTC): remarks: during the climb. 89 nm along the route, 44 nm south of the line.
as filed, and in English
```
DTW UA /OV 10 W DTW/TM 1222/FL070/TP B737/SK T014/RM DURC
```
Report
a routine report filed through DTW
Where
10 west dtw
Time
12:22 UTC
Height
at 7,000 ft
Aircraft
B737
Sky
T014
Remarks
during the climb
CL35 at 6,000 ft, 16 nm south, 6:47 am EDT (10:47 UTC): overcast from 1,400 ft to 2,600 ft; clear from 2,600 ft to 60,000 ft, remarks: clear above 2,600 ft. 89 nm along the route, 16 nm south of the line.
as filed, and in English
```
PTK UA /OV PTK270006/TM 1047/FL060/TP CL35/SK OVC014-TOP026/RM CLEAR ABOVE 026
```
Report
a routine report filed through PTK
Where
6 nm west (270°) of PTK
Time
10:47 UTC
Height
at 6,000 ft
Aircraft
CL35
Sky
overcast from 1,400 ft, tops 2,600 ft
Remarks
clear above 2,600 ft
BSC3 at 2,700 ft, 45 nm south, 8:32 am EDT (12:32 UTC): remarks: during the climb. 99 nm along the route, 45 nm south of the line.
as filed, and in English
```
DTW UA /OV 2 S DTW/TM 1232/FL027/TP BSC3/SK B005 T016/RM DURC
```
Report
a routine report filed through DTW
Where
2 south dtw
Time
12:32 UTC
Height
at 2,700 ft
Aircraft
BSC3
Sky
B005 T016
Remarks
during the climb
B717 at 400 ft, 43 nm south, 7:23 am EDT (11:23 UTC): remarks: bases 400 ft during the descent. 99 nm along the route, 43 nm south of the line.
as filed, and in English
```
DTW UA /OV DTW/TM 1123/FL004/TP B717/RM BASES 004 DURD
```
Report
a routine report filed through DTW
Where
over DTW
Time
11:23 UTC
Height
at 400 ft
Aircraft
B717
Remarks
bases 400 ft during the descent
B350 at 2,000 ft, 15 nm south, 7:22 am EDT (11:22 UTC): a routine report with nothing remarked on. 99 nm along the route, 15 nm south of the line.
as filed, and in English
```
PTK UA /OV PTK090005/TM 1122/FL020/TP B350/WX FV10SM
```
Report
a routine report filed through PTK
Where
5 nm east (090°) of PTK
Time
11:22 UTC
Height
at 2,000 ft
Aircraft
B350
Weather
flight visibility 10 miles
B739 at 9,000 ft, 20 nm south, 6:33 am EDT (10:33 UTC): no turbulence, no icing, clear from 9,000 ft to 60,000 ft, wind 295° at 13 knots, remarks: during the descent. 109 nm along the route, 20 nm south of the line.
as filed, and in English
```
DTW UA /OV DXO033026/TM 1033/FL090/TP B739/SK SKC/WV 29513KTS/TB NEG/IC NEG/RM DURD
```
Report
a routine report filed through DTW
Where
26 nm northeast (033°) of DXO
Time
10:33 UTC
Height
at 9,000 ft
Aircraft
B739
Sky
clear
Wind
from 295° at 13 knots
Turbulence
none
Icing
none
Remarks
during the descent
UAL513 at 34,000 ft, 15 nm north, 8:52 am EDT (12:52 UTC): no turbulence, wind 306° at 57 knots. 158 nm along the route, 15 nm north of the line.
as filed, and in English
```
ARP UAL513 4310N 08158W 1252 F340 306/057KT TB NONE SK IC
```
Report
a routine report filed through ARP
AC90 at 2,000 ft, 49 nm south, 7:05 am EDT (11:05 UTC): remarks: bases reported at at 2,000 ft. 237 nm along the route, 49 nm south of the line.
as filed, and in English
```
ERI UA /OV KERI/TM 1105/FL020/TP AC90/RM BASES REPORTED AT 020
```
Report
a routine report filed through ERI
Where
over KERI
Time
11:05 UTC
Height
at 2,000 ft
Aircraft
AC90
Remarks
bases reported at at 2,000 ft
B737 at 1,100 ft, 5 nm northeast, 8:45 am EDT (12:45 UTC): remarks: during the descent, ils runway 23. 296 nm along the route, 5 nm northeast 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

16 more routine reports are on the map.

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 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 7 forecast points nearest it (MKG, CLE, BUF, SYR, ALB, BDL, 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	320° at 13 kt	−9 kt		129 kt	4 h 58 min	2:07 pm EDT (18:07 UTC)
5,500 ft	330° at 14 kt	−8 kt		128 kt	5 h	2:09 pm EDT (18:09 UTC)
7,500 ft	330° at 15 kt	−8 kt	10 °C	128 kt	5 h	2:09 pm EDT (18:09 UTC)
9,500 ft	330° at 17 kt	−10 kt	7 °C	130 kt	4 h 56 min	2:05 pm EDT (18:05 UTC)
11,500 ft	320° at 19 kt	−13 kt	3 °C	133 kt	4 h 49 min	1:58 pm EDT (17:58 UTC)
13,500 ft	320° at 21 kt	−15 kt	0 °C	135 kt	4 h 45 min	1:54 pm EDT (17:54 UTC)
15,500 ft	320° at 23 kt	−16 kt	-5 °C	136 kt	4 h 43 min	1:52 pm EDT (17:52 UTC)
17,500 ft	320° at 25 kt	−18 kt	-9 °C	138 kt	4 h 39 min	1:48 pm EDT (17:48 UTC)
18,000 ft FL180	320° at 25 kt	−18 kt	-10 °C	138 kt	4 h 39 min	1:48 pm EDT (17:48 UTC)
24,000 ft FL240	310° at 25 kt	−19 kt	-21 °C	139 kt	4 h 37 min	1:46 pm EDT (17:46 UTC)
30,000 ft FL300	310° at 35 kt	−26 kt	-37 °C	146 kt	4 h 23 min	1:32 pm EDT (17:32 UTC)
34,000 ft FL340	300° at 41 kt	−35 kt	-45 °C	155 kt	4 h 08 min	1:17 pm EDT (17:17 UTC)
39,000 ft FL390	310° at 49 kt	−40 kt	-52 °C	160 kt	4 h	1:09 pm EDT (17:09 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
MKG	used from 0 nm out; 58 nm from the line	260/28	260/18 15°	250/16 9°	260/22 4°	280/31 -9°	270/35 -21°	270/44 -35°	270/42 -45°	290/61 -51°
CLE	used from 99 nm out; 99 nm from the line	310/7	350/20 14°	340/16 9°	320/21 2°	320/32 -8°	330/34 -20°	330/45 -36°	320/60 -45°	320/64 -51°
BUF	used from 197 nm out; 77 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°
SYR	used from 345 nm out; 48 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°
ALB	used from 444 nm out; 48 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°
BDL	used from 543 nm out; 35 nm from the line	020/15	010/19 10°	340/10 7°	300/17 3°	280/23 -10°	250/35 -22°	250/44 -38°	250/55 -42°	250/57 -51°
BOS	used from 592 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°

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
GRR Grand Rapids, MI	departure	VFR Sky: a broken layer at 23,000 feet	from the south (180°) at 5 knots	10+ mi	23,000 ft	793 ft	8:53 am EDT (12:53 UTC)
LAN Lansing, MI	39 nm out, 8 nm south of the line, tower	VFR	from the southwest (220°) at 6 knots	10+ mi	none	860 ft	12:53 UTC
FNT Flint, MI	79 nm out, 3 nm north of the line, tower	VFR	from the southwest (220°) at 7 knots	10+ mi	none	782 ft	12:53 UTC
CYZR Sarnia,	138 nm out, 6 nm northeast of the line	IFR Sky: overcast at 600 feet	from the south-southwest (200°) at 8 knots	7 mi	600 ft	594 ft	13:00 UTC
CYQS St Thomas,	197 nm out, 9 nm south of the line	no report just now				776 ft
BUF Buffalo, NY	296 nm out, 5 nm northeast of the line, tower	IFR Sky: a broken layer at 600 feet, overcast at 1,500 feet Weather: mist	from the west (270°) at 8 knots	4 mi	600 ft	726 ft	12:54 UTC
ROC Rochester, NY	345 nm out, 17 nm north of the line, tower	IFR Sky: overcast at 600 feet Weather: mist	from the west-southwest (240°) at 5 knots	4 mi	600 ft	558 ft	12:54 UTC
ITH Ithaca, NY	405 nm out, 17 nm south of the line, tower	low IFR Sky: overcast at 300 feet Weather: mist	from the west-northwest (300°) at 4 knots	4 mi	300 ft	1,099 ft	12:56 UTC
ALB Albany, NY	513 nm out, 9 nm northeast of the line, tower	IFR Sky: a broken layer at 600 feet, overcast at 1,800 feet Weather: nearby fog	calm	10+ mi	600 ft	284 ft	12:51 UTC
CEF Springfield/Chicopee, MA	572 nm out, 19 nm south of the line, tower	IFR Sky: a broken layer at 800 feet, a broken layer at 2,400 feet	from the east (090°) at 3 knots	10+ mi	800 ft	241 ft	12:55 UTC
ORH Worcester, MA	602 nm out, 11 nm south of the line, tower	VFR Sky: scattered clouds at 400 feet	from the north-northeast (020°) at 8 knots	10+ mi	none	1,009 ft	12:54 UTC
BOS Boston, MA	destination	IFR Sky: overcast at 700 feet	from the north (350°) at 5 knots	10+ mi	700 ft	19 ft	9:01 am EDT (13:01 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 BOS when you get there the forecast at the estimated arrival, 1:09 pm EDT (17:09 UTC)

Wind from the north at 5 knots, visibility more than 6 miles, scattered clouds at 4,000 feet VFR

At times between Mon 1:00 pm EDT (17:00 UTC) and 3:00 pm EDT (19:00 UTC): a broken layer at 3,000 feet marginal VFR

The whole forecast for BOS

From Mon 8:00 am EDT (12:00 UTC): wind from the north at 9 knots, visibility 6 miles, mist, overcast at 600 feet
From Mon 10:00 am EDT (14:00 UTC): wind from the north at 9 knots, visibility more than 6 miles, overcast at 1,500 feet
From Mon 1:00 pm EDT (17:00 UTC): wind from the north at 5 knots, visibility more than 6 miles, scattered clouds at 4,000 feet
At times between Mon 1:00 pm EDT (17:00 UTC) and 3:00 pm EDT (19:00 UTC): a broken layer at 3,000 feet
From Tue 12:00 am EDT (04:00 UTC): wind from the northeast at 10 knots, visibility more than 6 miles, overcast at 3,000 feet
From Tue 6:00 am EDT (10:00 UTC): wind from the east-northeast at 10 knots, visibility more than 6 miles, light rain, overcast at 800 feet

The forecast for GRR, the departure

From Mon 8:00 am EDT (12:00 UTC): wind from the south at 4 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
From Mon 1:00 pm EDT (17:00 UTC): wind from the southwest at 12 knots, gusting to 20, visibility more than 6 miles, a broken layer at 20,000 feet
From Mon 6:00 pm EDT (22:00 UTC): wind from the south-southwest at 10 knots, visibility more than 6 miles, scattered clouds at 8,000 feet
From Mon 11:00 pm EDT (03:00 UTC): wind from the south at 8 knots, visibility 4 miles, light rain showers, mist, scattered clouds at 5,000 feet, overcast at 8,000 feet
30% chance between Mon 11:00 pm EDT (03:00 UTC) and 3:00 am EDT (07:00 UTC): visibility 2 miles, light thunderstorms with rain, mist, overcast at 3,500 feet (thunderheads)
From Tue 3:00 am EDT (07:00 UTC): wind from the south-southwest at 8 knots, visibility more than 6 miles, scattered clouds at 8,000 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 17 nm from the route, at the destination end · drones kept away from a public gathering · starts Saturday 17 October · ZBW

Daylight

Sunset at GRR 7:04 pm EDT (23:04 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 central Great Lakes · loop National Weather Service

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: Gerald R Ford International, General Edward Lawrence Logan International.