Plan a flight · Sun 10:30 pm CDT (03:30 UTC)

Chicago Midway International to General Edward Lawrence Logan International MDW → BOS

746 nautical miles (858 statute miles) east on a straight line, true course 082°, about 086° magnetic at the departure end (variation 4W). At 120 knots that is 4 h 40 min at the quickest height in today's winds (34,000 ft, a 40-knot tailwind), arriving about 4:10 am EDT (08:10 UTC), after sunset at the destination. Right now MDW is VFR, wind from the south (190°) at 5 knots; BOS is IFR, wind from the east-northeast (060°) at 12 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: 2,679 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 706 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 378 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 428 to 656 nm out.
AIRMET ZULU 1C: moderate icing up to 25,000 ft. Over the last 239 nm of the route.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 13,000 ft. Over the last 199 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 MDW.

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

urgent B39M at 35,000 ft, 9 nm north, 10:15 pm CDT (03:15 UTC): remarks: no inj/dmg zob. 338 nm along the route, 9 nm north 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
A320 at 33,000 ft, 15 nm north, 7:36 pm CDT (00:36 UTC): moderate turbulence above 33,000 ft, remarks: zob. 119 nm along the route, 15 nm north of the line.
as filed, and in English
```
JXN UA /OV JXN280030/TM 0036/FL330/TP A320/TB OCNL MOD 330/RM ZOB
```
Report
a routine report filed through JXN
Where
30 nm west (280°) of JXN
Time
00:36 UTC
Height
at 33,000 ft
Aircraft
A320
Turbulence
occasional moderate at 33,000 ft
Remarks
zob
GLF4 at 10,000 ft, 6 nm south, 8:03 pm CDT (01:03 UTC): moderate turbulence above 10,000 ft, light rain, remarks: instrument conditions. 686 nm along the route, 6 nm south of the line.
as filed, and in English
```
BDL UA /OV CEF060010/TM 0103/FL100/TP GLF4/WX -RA/TB MOD 100/RM IMC
```
Report
a routine report filed through BDL
Where
10 nm northeast (060°) of CEF
Time
01:03 UTC
Height
at 10,000 ft
Aircraft
GLF4
Weather
light rain
Turbulence
moderate at 10,000 ft
Remarks
instrument conditions
A333 at 15,000 ft, 44 nm north, 8:37 pm CDT (01:37 UTC): moderate chop turbulence up to 15,000 ft, remarks: during the climb. At the destination end, 44 nm north of the line.
as filed, and in English
```
PSM UA /OV PSM/TM 0137/FL150/TP A333/TB MOD CHOP BLO 150/RM DURC
```
Report
a routine report filed through PSM
Where
over PSM
Time
01:37 UTC
Height
at 15,000 ft
Aircraft
A333
Turbulence
moderate chop below 15,000 ft
Remarks
during the climb
A321 at 5,000 ft, 21 nm southeast, 7:46 pm CDT (00:46 UTC): moderate turbulence from 5,000 ft to 15,000 ft. At the destination end, 21 nm southeast of the line.
as filed, and in English
```
BOS UA /OV BOS150020/TM 0046/FL050/TP A321/TB MOD 150-050
```
Report
a routine report filed through BOS
Where
20 nm southeast (150°) of BOS
Time
00:46 UTC
Height
at 5,000 ft
Aircraft
A321
Turbulence
moderate from 15,000 ft to 5,000 ft
E170 at 21,000 ft, 22 nm north, 8:07 pm CDT (01:07 UTC): light chop turbulence, remarks: during the climb zob. 149 nm along the route, 22 nm north of the line.
as filed, and in English
```
LAN UA /OV LAN180020/TM 0107/FL210/TP E170/TB LGHT CHOP/RM DURC ZOB
```
Report
a routine report filed through LAN
Where
20 nm south (180°) of LAN
Time
01:07 UTC
Height
at 21,000 ft
Aircraft
E170
Turbulence
lght chop
Remarks
during the climb zob
PA44 descending, 33 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. 179 nm along the route, 33 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
C525 descending, 33 nm south, 8:41 pm CDT (01:41 UTC): a routine report with nothing remarked on. 179 nm along the route, 33 nm south of the line.
as filed, and in English
```
TOL UA /OV TOL/TM 0141/FLDURD/TP C525/SK TOPS035 BKN010/WX 2SM
```
Report
a routine report filed through TOL
Where
over TOL
Time
01:41 UTC
Height
during the descent
Aircraft
C525
Sky
TOPS035 BKN010
Weather
2SM
A320 descending, 49 nm north, 8:35 pm CDT (01:35 UTC): overcast from 1,900 ft to 3,000 ft, remarks: on final runway 09 fnt. 179 nm along the route, 49 nm north of the line.
as filed, and in English
```
FNT UA /OV FNT270008/TM 0135/FLDURD/TP A320/SK OVC019 - TOP030/RM ON FINAL RY09 FNT
```
Report
a routine report filed through FNT
Where
8 nm west (270°) of FNT
Time
01:35 UTC
Height
during the descent
Aircraft
A320
Sky
overcast from 1,900 ft, tops 3,000 ft
Remarks
on final runway 09 fnt
A320 descending, 49 nm north, 9:09 pm CDT (02:09 UTC): overcast from 1,600 ft to 3,000 ft, remarks: on final runway 18 fnt. 189 nm along the route, 49 nm north of the line.
as filed, and in English
```
FNT UA /OV FNT/TM 0209/FLDURD/TP A320/SK OVC016 - TOP030/RM ON FINAL RY18 FNT
```
Report
a routine report filed through FNT
Where
over FNT
Time
02:09 UTC
Height
during the descent
Aircraft
A320
Sky
overcast from 1,600 ft, tops 3,000 ft
Remarks
on final runway 18 fnt
C25B at 2,000 ft, 30 nm north, 9:18 pm CDT (02:18 UTC): a routine report with nothing remarked on. 199 nm along the route, 30 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
CRJ7 at 600 ft, 2 nm northwest, 9:07 pm CDT (02:07 UTC): a broken layer above 1,500 ft. 199 nm along the route, 2 nm northwest of the line.
as filed, and in English
```
DTW UA /OV DTW/TM 0207/FLSFC/TP CRJ7/SK BKN 015
```
Report
a routine report filed through DTW
Where
over DTW
Time
02:07 UTC
Height
at the surface
Aircraft
CRJ7
Sky
a broken layer from 1,500 ft
SR22 at 1,300 ft, 30 nm north, 8:25 pm CDT (01:25 UTC): a routine report with nothing remarked on. 199 nm along the route, 30 nm north of the line.
as filed, and in English
```
PTK UA /OV PTK270003/TM 0125/FL013/TP SR22/SK BASES 019 OVC
```
Report
a routine report filed through PTK
Where
3 nm west (270°) of PTK
Time
01:25 UTC
Height
at 1,300 ft
Aircraft
SR22
Sky
bases 1,900 ft overcast
CRJ7 descending, 2 nm northwest, 8:01 pm CDT (01:01 UTC): overcast above 2,800 ft. 199 nm along the route, 2 nm northwest of the line.
as filed, and in English
```
DTW UA /OV FINAL 3R /TM 0101/FLDURD/TP CRJ7/SK OVC 028
```
Report
a routine report filed through DTW
Where
final 3R
Time
01:01 UTC
Height
during the descent
Aircraft
CRJ7
Sky
overcast from 2,800 ft

16 more routine reports are on the map.

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 8 forecast points nearest it (JOT, 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	310° at 5 kt	−4 kt		124 kt	6 h 01 min	5:31 am EDT (09:31 UTC)
5,500 ft	320° at 10 kt	−5 kt		125 kt	5 h 58 min	5:28 am EDT (09:28 UTC)
7,500 ft	320° at 12 kt	−6 kt	10 °C	126 kt	5 h 55 min	5:25 am EDT (09:25 UTC)
9,500 ft	320° at 12 kt	−7 kt	7 °C	127 kt	5 h 52 min	5:22 am EDT (09:22 UTC)
11,500 ft	310° at 12 kt	−9 kt	3 °C	129 kt	5 h 47 min	5:17 am EDT (09:17 UTC)
13,500 ft	300° at 15 kt	−12 kt	-1 °C	132 kt	5 h 39 min	5:09 am EDT (09:09 UTC)
15,500 ft	300° at 19 kt	−16 kt	-5 °C	136 kt	5 h 29 min	4:59 am EDT (08:59 UTC)
17,500 ft	300° at 23 kt	−19 kt	-9 °C	139 kt	5 h 22 min	4:52 am EDT (08:52 UTC)
18,000 ft FL180	290° at 23 kt	−20 kt	-10 °C	140 kt	5 h 20 min	4:50 am EDT (08:50 UTC)
24,000 ft FL240	290° at 27 kt	−24 kt	-21 °C	144 kt	5 h 11 min	4:41 am EDT (08:41 UTC)
30,000 ft FL300	290° at 34 kt	−28 kt	-36 °C	148 kt	5 h 02 min	4:32 am EDT (08:32 UTC)
34,000 ft FL340	280° at 44 kt	−40 kt	-43 °C	160 kt	4 h 40 min	4:10 am EDT (08:10 UTC)
39,000 ft FL390	280° at 44 kt	−40 kt	-50 °C	160 kt	4 h 40 min	4:10 am EDT (08:10 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°
FWA	used from 50 nm out; 71 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 199 nm out; 63 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 348 nm out; 45 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 448 nm out; 62 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 547 nm out; 53 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 646 nm out; 29 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 696 nm out; 25 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
MDW Chicago, IL	departure	VFR	from the south (190°) at 5 knots	10+ mi	none	619 ft	9:53 pm CDT (02:53 UTC)
SBN South Bend, IN	60 nm out, 14 nm south of the line, tower	low IFR Weather: fog	calm	0.25 mi	none	798 ft	03:27 UTC
JXN Jackson, MI	149 nm out, 10 nm north of the line, tower	marginal VFR Sky: overcast at 1,000 feet	calm	10+ mi	1,000 ft	1,000 ft	02:56 UTC
DTW Detroit, MI	199 nm out, 2 nm northwest of the line, tower	marginal VFR Sky: a few clouds at 1,200 feet, overcast at 2,000 feet	calm	10+ mi	2,000 ft	645 ft	02:53 UTC
ERI Erie, PA	338 nm out, 16 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	378 nm out, 7 nm north of the line	VFR Sky: a few clouds at 12,000 feet	from the east-southeast (120°) at 3 knots	10+ mi	none	692 ft	02:53 UTC
ITH Ithaca, NY	507 nm out, 4 nm northwest of the line, tower	VFR Sky: overcast at 3,600 feet Weather: light rain	variable at 4 knots	10+ mi	3,600 ft	1,099 ft	02:56 UTC
BGM Binghamton, NY	527 nm out, 14 nm south of the line, tower	low IFR Sky: a broken layer at 200 feet, overcast at 2,100 feet Weather: mist	from the east-northeast (070°) at 5 knots	5 mi	200 ft	1,635 ft	03:15 UTC
BAF Westfield/Springfield, MA	666 nm out, 16 nm south of the line, tower	IFR Sky: overcast at 600 feet Weather: light rain, mist	from the north (010°) at 9 knots	3 mi	600 ft	270 ft	03:25 UTC
ORH Worcester, MA	706 nm out, 8 nm south of the line, tower	low IFR Sky: overcast at 200 feet Weather: light rain, mist	from the northeast (040°) at 11 knots, gusting to 17	3 mi	200 ft	1,009 ft	03:23 UTC
BOS Boston, MA	destination	IFR Sky: a few clouds at 700 feet, a broken layer at 1,700 feet, overcast at 4,100 feet Weather: heavy rain, mist	from the east-northeast (060°) at 12 knots	2.5 mi	1,700 ft	19 ft	11:10 pm EDT (03:10 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, 4:10 am EDT (08:10 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 MDW, 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 MDW 6:14 pm CDT (23:14 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 Midway International, General Edward Lawrence Logan International.