Plan a flight · Mon 12:15 am CDT (05:15 UTC)

Chicago O'Hare International to General Edward Lawrence Logan International ORD → BOS

751 nautical miles (865 statute miles) east on a straight line, true course 083°, about 086° magnetic at the departure end (variation 3W). At 120 knots that is 4 h 40 min at the quickest height in today's winds (39,000 ft, a 41-knot tailwind), arriving about 5:55 am EDT (09:55 UTC), after sunset at the destination. Right now ORD is VFR, wind from the south (180°) at 5 knots; BOS is IFR, wind from the north-northeast (030°) at 11 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: 15,048 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 702 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 435 to 652 nm out.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 297 nm of the route.
AIRMET ZULU 1C: moderate icing up to 22,000 ft. Over the route from 623 to 692 nm out.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 10,000 ft. Over the last 79 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 ORD.

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

urgent B39M at 35,000 ft, 2 nm northwest, 10:15 pm CDT (03:15 UTC): remarks: no inj/dmg zob. 346 nm along the route, 2 nm northwest of the line.
as filed, and in English
```
DKK UUA /OV DKK280040/TM 0315/FL350/TP B39M/TB MTN WVE ACTN +/-5KTS/RM NO INJ/DMG ZOB
```
Report
an urgent report filed through DKK
Where
40 nm west (280°) of DKK
Time
03:15 UTC
Height
at 35,000 ft
Aircraft
B39M
Turbulence
mountain wve actn a 5-knot loss of airspeed
Remarks
no inj/dmg zob
UAL330 at 35,000 ft, 33 nm north, 11:30 pm CDT (04:30 UTC): moderate turbulence, wind 235° at 92 knots. 712 nm along the route, 33 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, 11:34 pm CDT (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, 11:33 pm CDT (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
B738 at 1,300 ft, 43 nm south, 11:45 pm CDT (04:45 UTC): overcast from 1,300 ft to 3,000 ft, remarks: during the descent. 178 nm along the route, 43 nm south of the line.
as filed, and in English
```
TOL UA /OV KTOL/TM 0445/FL013/TP B738/SK OVC013-TOP030/RM DURD
```
Report
a routine report filed through TOL
Where
over KTOL
Time
04:45 UTC
Height
at 1,300 ft
Aircraft
B738
Sky
overcast from 1,300 ft, tops 3,000 ft
Remarks
during the descent
PA44 descending, 42 nm south, 9:27 pm CDT (02:27 UTC): a broken layer from 900 ft to 1,500 ft; a broken layer from 2,600 ft to 3,500 ft, fog. 178 nm along the route, 42 nm south of the line.
as filed, and in English
```
TOL UA /OV TOL/TM 0227/FLDURD/TP PA44/SK BKN009 TOPS015 BKN026 TOPS035/WX FG
```
Report
a routine report filed through TOL
Where
over TOL
Time
02:27 UTC
Height
during the descent
Aircraft
PA44
Sky
BKN009 TOPS015 BKN026 TOPS035
Weather
fog
C560 at 3,000 ft, 21 nm north, 9:28 pm CDT (02:28 UTC): a routine report with nothing remarked on. 198 nm along the route, 21 nm north of the line.
as filed, and in English
```
PTK UA /OV 6 W/TM 0228/FL030/TP C560/SK BASES 019 TOPS 030 OVC
```
Report
a routine report filed through PTK
Where
6 west
Time
02:28 UTC
Height
at 3,000 ft
Aircraft
C560
Sky
bases 1,900 ft tops 3,000 ft overcast
C25B at 2,000 ft, 21 nm north, 9:18 pm CDT (02:18 UTC): a routine report with nothing remarked on. 198 nm along the route, 21 nm north of the line.
as filed, and in English
```
PTK UA /OV 2 W/TM 0218/FL020/TP C25B/SK BASES 020 OVC
```
Report
a routine report filed through PTK
Where
2 west
Time
02:18 UTC
Height
at 2,000 ft
Aircraft
C25B
Sky
bases 2,000 ft overcast
B739 descending, 8 nm southwest, 11:54 pm CDT (04:54 UTC): a routine report with nothing remarked on. 208 nm along the route, 8 nm southwest of the line.
as filed, and in English
```
DTW UA /OV DTW/TM 0454/FLDURD/TP B739/SK BASES 011
```
Report
a routine report filed through DTW
Where
over DTW
Time
04:54 UTC
Height
during the descent
Aircraft
B739
Sky
bases 1,100 ft
A320 descending, 8 nm southwest, 10:27 pm CDT (03:27 UTC): overcast above 1,400 ft. 208 nm along the route, 8 nm southwest of the line.
as filed, and in English
```
DTW UA /OV DTW/TM 0327/FLDURD/TP A320/SK 014 OVC
```
Report
a routine report filed through DTW
Where
over DTW
Time
03:27 UTC
Height
during the descent
Aircraft
A320
Sky
at 1,400 ft overcast
CRJ7 descending, 33 nm north, 11:09 pm CDT (04:09 UTC): a routine report with nothing remarked on. At the destination end, 33 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
CRJ9 descending, 33 nm north, 10:16 pm CDT (03:16 UTC): a routine report with nothing remarked on. At the destination end, 33 nm north of the line.
as filed, and in English
```
MHT UA /OV RWY 6/TM 0316/FLDURD/TP CRJ9/SK 004
```
Report
a routine report filed through MHT
Where
runway 6
Time
03:16 UTC
Height
during the descent
Aircraft
CRJ9
Sky
at 400 ft
B38M descending, 33 nm north, 9:53 pm CDT (02:53 UTC): overcast above 1,500 ft; scattered clouds above 500 ft. At the destination end, 33 nm north of the line.
as filed, and in English
```
MHT UA /OV RWY 17/TM 0253/FLDURD/TP B38M/SK 015 OVC / 005 SCT
```
Report
a routine report filed through MHT
Where
runway 17
Time
02:53 UTC
Height
during the descent
Aircraft
B38M
Sky
at 1,500 ft overcast; at 500 ft scattered
B738 at 300 ft, 0 nm south, 10:00 pm CDT (03:00 UTC): a broken layer above 500 ft, remarks: during the descent runway 4R bos. At the destination end, 0 nm south of the line.
as filed, and in English
```
BOS UA /OV KBOS/TM 0300/FL003/TP B738/SK BKN005/RM DURD RY 4R BOS
```
Report
a routine report filed through BOS
Where
over KBOS
Time
03:00 UTC
Height
at 300 ft
Aircraft
B738
Sky
a broken layer from 500 ft
Remarks
during the descent runway 4R bos

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 9 forecast points nearest it (JOT, MKG, FWA, 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	300° at 6 kt	−5 kt		125 kt	6 h	7:15 am EDT (11:15 UTC)
5,500 ft	320° at 10 kt	−5 kt		125 kt	6 h	7:15 am EDT (11:15 UTC)
7,500 ft	330° at 12 kt	−6 kt	10 °C	126 kt	5 h 58 min	7:13 am EDT (11:13 UTC)
9,500 ft	320° at 12 kt	−7 kt	7 °C	127 kt	5 h 55 min	7:10 am EDT (11:10 UTC)
11,500 ft	310° at 12 kt	−9 kt	3 °C	129 kt	5 h 49 min	7:04 am EDT (11:04 UTC)
13,500 ft	300° at 15 kt	−12 kt	-1 °C	132 kt	5 h 41 min	6:56 am EDT (10:56 UTC)
15,500 ft	300° at 19 kt	−15 kt	-5 °C	135 kt	5 h 34 min	6:49 am EDT (10:49 UTC)
17,500 ft	300° at 22 kt	−18 kt	-9 °C	138 kt	5 h 27 min	6:42 am EDT (10:42 UTC)
18,000 ft FL180	300° at 23 kt	−19 kt	-10 °C	139 kt	5 h 24 min	6:39 am EDT (10:39 UTC)
24,000 ft FL240	290° at 27 kt	−23 kt	-21 °C	143 kt	5 h 15 min	6:30 am EDT (10:30 UTC)
30,000 ft FL300	300° at 33 kt	−27 kt	-36 °C	147 kt	5 h 07 min	6:22 am EDT (10:22 UTC)
34,000 ft FL340	290° at 43 kt	−39 kt	-43 °C	159 kt	4 h 43 min	5:58 am EDT (09:58 UTC)
39,000 ft FL390	290° at 45 kt	−41 kt	-51 °C	161 kt	4 h 40 min	5:55 am EDT (09:55 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
JOT	used from 0 nm out; 48 nm from the line	250/23	270/22 15°	250/16 10°	240/9 4°	280/22 -7°	280/29 -19°	300/29 -34°	290/50 -43°	300/64 -52°
MKG	used from 49 nm out; 63 nm from the line	260/22	290/16 15°	300/11 10°	290/5 3°	300/26 -9°	300/32 -20°	320/48 -36°	320/61 -45°	310/74 -53°
FWA	used from 99 nm out; 74 nm from the line	300/17	320/20 16°	330/20 10°	340/15 3°	310/27 -8°	320/37 -20°	330/52 -36°	330/65 -43°	330/60 -50°
CLE	used from 198 nm out; 74 nm from the line	340/7	010/16 13°	350/18 8°	350/20 3°	340/31 -10°	340/46 -21°	340/54 -37°	330/62 -44°	340/65 -49°
BUF	used from 346 nm out; 47 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 494 nm out; 37 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 593 nm out; 19 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°
BDL	used from 643 nm out; 32 nm from the line	120/24	290/23 12°	280/21 8°	250/36 3°	250/41 -11°	230/48 -21°	230/78 -32°	230/96 -41°	230/86 -52°
BOS	used from 692 nm out; 35 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	Wind	Visibility	Ceiling	Elevation	Reported
ORD Chicago, IL	departure	VFR	from the south (180°) at 5 knots	10+ mi	none	680 ft	11:51 pm CDT (04:51 UTC)
GYY Gary/Chicago, IN	20 nm out, 24 nm south of the line, tower	VFR	variable at 5 knots	10+ mi	none	596 ft	03:50 UTC
AZO Kalamazoo, MI	109 nm out, 4 nm northwest of the line, tower	VFR Weather: mist	from the south (170°) at 4 knots	6 mi	none	873 ft	04:53 UTC
JXN Jackson, MI	158 nm out, 4 nm west of the line, tower	marginal VFR Weather: mist	from the south (170°) at 4 knots	3 mi	none	1,000 ft	05:09 UTC
ERI Erie, PA	346 nm out, 23 nm south of the line, tower	marginal VFR Sky: overcast at 3,000 feet	variable at 4 knots	10+ mi	3,000 ft	732 ft	00:51 UTC
DKK Dunkirk, NY	386 nm out, 1 nm northwest of the line	VFR Sky: overcast at 10,000 feet	from the south-southwest (200°) at 5 knots	10+ mi	10,000 ft	692 ft	04:53 UTC
ITH Ithaca, NY	514 nm out, 5 nm west of the line, tower	IFR Sky: a broken layer at 13,000 feet Weather: mist	calm	1 mi	13,000 ft	1,099 ft	05:08 UTC
BGM Binghamton, NY	534 nm out, 18 nm south of the line, tower	VFR Sky: a few clouds at 2,200 feet, scattered clouds at 3,100 feet	from the east-southeast (120°) at 4 knots	10+ mi	none	1,635 ft	04:53 UTC
BAF Westfield/Springfield, MA	672 nm out, 17 nm south of the line, tower	IFR Sky: a broken layer at 500 feet, overcast at 1,000 feet Weather: light rain, mist	from the north (360°) at 8 knots	3 mi	500 ft	270 ft	04:53 UTC
ORH Worcester, MA	712 nm out, 8 nm south of the line, tower	low IFR Sky: overcast at 200 feet Weather: rain, mist	from the north-northeast (030°) at 9 knots, gusting to 16	2.5 mi	200 ft	1,009 ft	05:05 UTC
BOS Boston, MA	destination	IFR Sky: a broken layer at 500 feet, a broken layer at 2,700 feet, overcast at 4,000 feet Weather: light rain, mist	from the north-northeast (030°) at 11 knots	4 mi	500 ft	19 ft	12:57 am EDT (04:57 UTC)

The highest airport on this list sits at 1,635 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, 5:55 am EDT (09:55 UTC)

Wind from the northeast at 8 knots, visibility 2 miles, light rain showers, mist, overcast at 300 feet low IFR

The whole forecast for BOS

From Sun 8:00 pm EDT (00:00 UTC): wind from the southeast at 4 knots, visibility 4 miles, heavy rain, mist, scattered clouds at 2,200 feet, a broken layer at 2,800 feet and more above
From Sun 10:00 pm EDT (02:00 UTC): wind from the east-southeast at 5 knots, visibility 3 miles, light rain, mist, overcast at 1,000 feet
From Sun 11:00 pm EDT (03:00 UTC): wind from the east at 6 knots, visibility 2 miles, light rain, mist, overcast at 800 feet
From Mon 2:00 am EDT (06:00 UTC): wind from the northeast at 8 knots, visibility 2 miles, light rain showers, mist, overcast at 300 feet
From Mon 9:00 am EDT (13:00 UTC): wind from the north at 7 knots, visibility 3 miles, mist, a broken layer at 800 feet
From Mon 1:00 pm EDT (17:00 UTC): wind from the north-northwest at 5 knots, visibility more than 6 miles, scattered clouds at 15,000 feet
From Mon 11:00 pm EDT (03:00 UTC): wind from the north-northeast at 5 knots, visibility more than 6 miles, scattered clouds at 4,500 feet

The forecast for ORD, the departure

From Sun 10:00 pm CDT (03:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, scattered clouds at 30,000 feet
From Mon 12:00 pm CDT (17:00 UTC): wind from the south-southwest at 13 knots, gusting to 24, visibility more than 6 miles, a few clouds at 25,000 feet
From Mon 6:00 pm CDT (23:00 UTC): wind from the south-southwest at 12 knots, visibility more than 6 miles, a few clouds at 12,000 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 16 nm from the route, at the destination end · drones kept away from a public gathering · starts Saturday 17 October · ZBW

Daylight

Sunset at ORD 6:15 pm CDT (23:15 UTC), at BOS 6:07 pm EDT (22:07 UTC) (civil twilight ends 6:35 pm EDT (22:35 UTC)). At 120 knots the arrival at BOS is before sunrise there (6:53 am EDT (10:53 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 upper Mississippi valley · loop National Weather Service

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: Chicago O'Hare International, General Edward Lawrence Logan International.