Plan a flight · Mon 12:23 pm EDT (16:23 UTC)

South Bend International to Billings Logan International SBN → BIL

991 nautical miles (1,141 statute miles) west on a straight line, true course 292°, about 297° magnetic at the departure end (variation 5W). At 120 knots that is 9 h 06 min at the quickest height in today's winds (4,500 ft, a 11-knot headwind), arriving about 7:29 pm MDT (01:29 UTC), after sunset at the destination. Right now SBN is VFR, wind from the south-southwest (210°) at 7 knots; BIL is marginal VFR, wind calm. 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

SIGMET C24C: thunderstorms (a convective SIGMET) up to 37,000 ft, moving from the southwest at 40 knots, until 1:55 pm EDT (17:55 UTC). Over the route from 615 to 694 nm out.
as issued
```
WSUS32 KKCI 121555
MKCC WST 121555
CONVECTIVE SIGMET 24C
VALID UNTIL 1755Z
SD ND
FROM GFK-FAR-PIR-DPR-50SE MOT-GFK
INTSF AREA TS MOV FROM 21040KT. TOPS TO FL370.
```
AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the last 605 nm of the route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 30 nm of the route.
AIRMET ZULU 2C: moderate icing up to 18,000 ft. Near the route, at the destination end.

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 SBN.

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

B39M at 34,000 ft, 50 nm northeast, 10:01 am EDT (14:01 UTC): no turbulence. At the departure end, 50 nm northeast of the line.
as filed, and in English
```
BIV UA /OV PMM300030/TM 1401/FL340/TP B39M/TB NEG
```
Report
a routine report filed through BIV
Where
30 nm northwest (300°) of PMM
Time
14:01 UTC
Height
at 34,000 ft
Aircraft
B39M
Turbulence
none
C17 at 2,000 ft, 31 nm southwest, 11:06 am EDT (15:06 UTC): overcast above 2,000 ft, remarks: during the descent. 89 nm along the route, 31 nm southwest of the line.
as filed, and in English
```
KADW UA /OV 1L ARR/TM 1506/FL020/TP C17/SK OVC020/WV 23KT HEAD WIND/RM DURD
```
Report
a routine report filed through KADW
Where
1L arrival
Time
15:06 UTC
Height
at 2,000 ft
Aircraft
C17
Sky
overcast from 2,000 ft
Wind
23 knots head wind
Remarks
during the descent
PC12 at 20,000 ft, 25 nm north, 9:27 am EDT (13:27 UTC): no turbulence. 188 nm along the route, 25 nm north of the line.
as filed, and in English
```
LNR UA /OV 0WI4/TM 1327/FL200/TP PC12/TB NEG
```
Report
a routine report filed through LNR
Where
over 0WI4
Time
13:27 UTC
Height
at 20,000 ft
Aircraft
PC12
Turbulence
none
C510 at 17,000 ft, 25 nm north, 9:27 am EDT (13:27 UTC): no turbulence. 188 nm along the route, 25 nm north of the line.
as filed, and in English
```
LNR UA /OV LNR/TM 1327/FL170/TP C510/TB NEG
```
Report
a routine report filed through LNR
Where
over LNR
Time
13:27 UTC
Height
at 17,000 ft
Aircraft
C510
Turbulence
none
P46T at 31,000 ft, 46 nm south, 9:37 am EDT (13:37 UTC): light chop turbulence. 278 nm along the route, 46 nm south of the line.
as filed, and in English
```
ALO UA /OV ALO270005/TM 1337/FL310/TP P46T/TB INTMT LGT CHOP
```
Report
a routine report filed through ALO
Where
5 nm west (270°) of ALO
Time
13:37 UTC
Height
at 31,000 ft
Aircraft
P46T
Turbulence
intermittent light chop
SF50 at 13,000 ft, 31 nm north, 9:36 am EDT (13:36 UTC): no turbulence, no icing, clear from 13,000 ft to 60,000 ft. 416 nm along the route, 31 nm north of the line.
as filed, and in English
```
RWF UA /OV RWF/TM 1336/FL130/TP SF50/SK SKC/TB NEG/IC NEG
```
Report
a routine report filed through RWF
Where
over RWF
Time
13:36 UTC
Height
at 13,000 ft
Aircraft
SF50
Sky
clear
Turbulence
none
Icing
none
SF50 at 4,000 ft, 26 nm south, 9:47 am EDT (13:47 UTC): no turbulence, no icing. 624 nm along the route, 26 nm south of the line.
as filed, and in English
```
PIR UA /OV PIR/TM 1347/FL040/TP SF50/SK BASE008-TOP040/TB NEG/IC NEG
```
Report
a routine report filed through PIR
Where
over PIR
Time
13:47 UTC
Height
at 4,000 ft
Aircraft
SF50
Sky
BASE008-TOP040
Turbulence
none
Icing
none
A321 at 35,000 ft, 40 nm north, 9:38 am EDT (13:38 UTC): no turbulence. 654 nm along the route, 40 nm north of the line.
as filed, and in English
```
MBG UA /OV MBG/TM 1338/FL350/TP A321/SK TOP310/TB NEG
```
Report
a routine report filed through MBG
Where
over MBG
Time
13:38 UTC
Height
at 35,000 ft
Aircraft
A321
Sky
TOP310
Turbulence
none
BE9L at 15,000 ft, 27 nm south, 10:53 am EDT (14:53 UTC): no turbulence, no icing. 664 nm along the route, 27 nm south of the line.
as filed, and in English
```
PIR UA /OV PIR270040/TM 1453/FL150/TP BE9L/TB NEG/IC NEG
```
Report
a routine report filed through PIR
Where
40 nm west (270°) of PIR
Time
14:53 UTC
Height
at 15,000 ft
Aircraft
BE9L
Turbulence
none
Icing
none
BE9L at 15,000 ft, 40 nm south, 10:41 am EDT (14:41 UTC): light chop turbulence, remarks: zdvwc. 694 nm along the route, 40 nm south of the line.
as filed, and in English
```
PHP UA /OV PHP340020/TM 1441/FL150/TP BE9L/SK TOP 155 BKN/TB OCNL LGT CHOP/RM -ZDVWC
```
Report
a routine report filed through PHP
Where
20 nm north (340°) of PHP
Time
14:41 UTC
Height
at 15,000 ft
Aircraft
BE9L
Sky
top 15,500 ft broken
Turbulence
occasional light chop
Remarks
zdvwc
CL35 at 43,000 ft, 25 nm north, 11:53 am EDT (15:53 UTC): no chop turbulence. 892 nm along the route, 25 nm north of the line.
as filed, and in English
```
MLS UA /OV MLS195024/TM 1553/FL430/TP CL35/TB NEG CHOP /ZLC
```
Report
a routine report filed through MLS
Where
24 nm south (195°) of MLS
Time
15:53 UTC
Height
at 43,000 ft
Aircraft
CL35
Turbulence
no chop zlc
CL35 at 45,000 ft, 45 nm north, 11:42 am EDT (15:42 UTC): light chop turbulence. At the destination end, 45 nm north of the line.
as filed, and in English
```
BIL UA /OV BIL345045/TM 1542/FL450/TP CL35/TB CONS LGT CHOP /ZLC
```
Report
a routine report filed through BIL
Where
45 nm north (345°) of BIL
Time
15:42 UTC
Height
at 45,000 ft
Aircraft
CL35
Turbulence
continuous light chop zlc

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 westbound cruising heights for this course (VFR: even thousands plus 500 ft; above 18,000 ft the forecast levels), with the wind averaged along the line from the 10 forecast points nearest it (JOT, DBQ, LSE, MCW, FSD, ABR, PIR, RAP, MLS, BIL). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
4,500 ft	250° at 14 kt	+11 kt	4 °C	109 kt	9 h 06 min	7:29 pm MDT (01:29 UTC)
6,500 ft	250° at 16 kt	+12 kt	12 °C	108 kt	9 h 11 min	7:34 pm MDT (01:34 UTC)
8,500 ft	250° at 20 kt	+16 kt	10 °C	104 kt	9 h 32 min	7:55 pm MDT (01:55 UTC)
10,500 ft	250° at 23 kt	+19 kt	6 °C	101 kt	9 h 49 min	8:12 pm MDT (02:12 UTC)
12,500 ft	250° at 26 kt	+22 kt	2 °C	98 kt	10 h 07 min	8:30 pm MDT (02:30 UTC)
14,500 ft	250° at 27 kt	+23 kt	-2 °C	97 kt	10 h 13 min	8:36 pm MDT (02:36 UTC)
16,500 ft	250° at 29 kt	+24 kt	-7 °C	96 kt	10 h 19 min	8:42 pm MDT (02:42 UTC)
18,000 ft FL180	250° at 30 kt	+24 kt	-10 °C	96 kt	10 h 19 min	8:42 pm MDT (02:42 UTC)
24,000 ft FL240	240° at 39 kt	+30 kt	-23 °C	90 kt	11 h 01 min	9:24 pm MDT (03:24 UTC)
30,000 ft FL300	250° at 44 kt	+38 kt	-34 °C	82 kt	12 h 05 min	10:28 pm MDT (04:28 UTC)
34,000 ft FL340	260° at 48 kt	+43 kt	-37 °C	77 kt	12 h 52 min	11:15 pm MDT (05:15 UTC)
39,000 ft FL390	260° at 53 kt	+48 kt	-45 °C	72 kt	13 h 46 min	12:09 am MDT (06:09 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
JOT	used from 0 nm out; 64 nm from the line	230/30	250/26 16°	270/27 11°	280/34 5°	290/32 -8°	280/37 -21°	280/40 -36°	290/46 -37°	290/56 -47°
DBQ	used from 149 nm out; 38 nm from the line	250/26	240/32 19°	250/35 11°	260/37 5°	270/35 -9°	270/40 -21°	270/43 -35°	280/49 -37°	280/58 -46°
LSE	used from 248 nm out; 53 nm from the line	240/16	230/27 20°	250/35 12°	260/28 5°	260/30 -9°	260/37 -21°	260/38 -36°	280/44 -37°	280/52 -47°
MCW	used from 297 nm out; 22 nm from the line	220/19	210/29 20°	230/35 13°	250/35 5°	250/33 -9°	260/44 -21°	260/46 -33°	270/58 -37°	270/59 -46°
FSD	used from 396 nm out; 64 nm from the line	260/9	210/16 18°	220/27 14°	230/28 6°	240/39 -9°	240/48 -22°	260/52 -32°	260/61 -38°	260/60 -46°
ABR	used from 545 nm out; 53 nm from the line	020/9	230/5 12°	190/14 11°	200/25 5°	230/37 -11°	230/50 -23°	240/39 -34°	240/49 -38°	240/55 -46°
PIR	used from 595 nm out; 30 nm from the line		300/15 10°	270/10 10°	220/18 4°	220/36 -11°	230/43 -21°	240/48 -33°	240/51 -37°	240/55 -44°
RAP	used from 694 nm out; 75 nm from the line		310/18 6°	270/15 6°	260/20 2°	240/28 -11°	240/42 -23°	240/47 -35°	230/47 -36°	240/56 -44°
MLS	used from 793 nm out; 86 nm from the line		320/9 -2°	270/14 0°	260/22 -1°	220/30 -14°	210/43 -26°	230/53 -34°	230/54 -38°	230/59 -44°
BIL	used from 942 nm out; 25 nm from the line		L/V	250/11 -1°	240/20 -2°	230/28 -15°	220/28 -28°	220/53 -34°	220/55 -39°	220/63 -44°

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
SBN South Bend, IN	departure	VFR	from the south-southwest (210°) at 7 knots	10+ mi	none	798 ft	11:54 am EDT (15:54 UTC)
PWK Chicago/Prospect Heights/Wheeling, IL	79 nm out, 5 nm southeast of the line, tower	VFR Sky: scattered clouds at 9,000 feet	from the southwest (230°) at 9 knots	10+ mi	none	644 ft	15:52 UTC
JVL Janesville, WI	129 nm out, 9 nm north of the line, tower	VFR Sky: scattered clouds at 23,000 feet	from the southwest (230°) at 12 knots	10+ mi	none	807 ft	14:45 UTC
PDC Prairie du Chien, WI	228 nm out, 1 nm southeast of the line	VFR	from the north-northwest (340°) at 6 knots	10+ mi	none	660 ft	17:15 UTC
SBU Blue Earth, MN	357 nm out, 8 nm southwest of the line	no report just now				1,107 ft
MWM Windom, MN	406 nm out, 3 nm west of the line	VFR	calm	10+ mi	none	1,410 ft	16:15 UTC
HON Huron, SD	545 nm out, 7 nm south of the line	low IFR Sky: overcast at 300 feet Weather: mist	from the north-northwest (340°) at 9 knots	2.5 mi	300 ft	1,288 ft	15:55 UTC
BIL Billings, MT	destination	marginal VFR Sky: a few clouds at 600 feet, a broken layer at 1,500 feet	calm	10+ mi	1,500 ft	3,662 ft	10:09 am MDT (16:09 UTC)

The highest airport on this list sits at 3,662 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At BIL when you get there the forecast at the estimated arrival, 7:29 pm MDT (01:29 UTC)

Wind from the east at 9 knots, visibility 6 miles, light drizzle, mist, a few clouds at 300 feet, overcast at 1,800 feet marginal VFR

The whole forecast for BIL

From Mon 6:00 am MDT (12:00 UTC): wind from the north-northwest at 8 knots, visibility more than 6 miles, light rain snow, a broken layer at 1,200 feet, overcast at 2,200 feet
From Mon 1:00 pm MDT (19:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 1,500 feet, overcast at 2,500 feet
From Mon 6:00 pm MDT (00:00 UTC): wind from the east at 9 knots, visibility 6 miles, light drizzle, mist, a few clouds at 300 feet, overcast at 1,800 feet
From Mon 10:00 pm MDT (04:00 UTC): wind from the east at 9 knots, visibility 4 miles, light drizzle, mist, scattered clouds at 300 feet, overcast at 1,200 feet
From Tue 3:00 am MDT (09:00 UTC): wind light and variable, visibility 3 miles, light rain, mist, scattered clouds at 300 feet, a broken layer at 1,200 feet and more above

The forecast for SBN, the departure

From Mon 8:00 am EDT (12:00 UTC): wind from the south at 7 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
From Mon 1:00 pm EDT (17:00 UTC): wind from the south-southwest at 12 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 25,000 feet
From Mon 8:00 pm EDT (00:00 UTC): wind from the south-southwest at 9 knots, visibility more than 6 miles, scattered clouds at 10,000 feet

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

No temporary flight restriction on or near this route right now.

Daylight

Sunset at SBN 7:09 pm EDT (23:09 UTC), at BIL 6:32 pm MDT (00:32 UTC) (civil twilight ends 7:02 pm MDT (01:02 UTC)). At 120 knots the arrival at BIL is after sunset there (6:33 pm MDT (00:33 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 upper Mississippi valley · loop National Weather Service

Radar now, the northern Rockies · 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: South Bend International, Billings Logan International.