Plan a flight · Mon 3:05 am EDT (07:05 UTC)

Mbs International to Ontario International MBS → ONT

1,655 nautical miles (1,905 statute miles) west on a straight line, true course 261°, about 268° magnetic at the departure end (variation 7W). At 120 knots that is 16 h 43 min at the quickest height in today's winds (8,500 ft, a 21-knot headwind), arriving about 4:48 pm PDT (23:48 UTC). Right now MBS is VFR, wind from the south-southwest (210°) at 7 knots; ONT is marginal VFR, wind from the north (350°) at 3 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: 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 SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the first 70 nm of the route.
AIRMET TANGO 3W: 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 259 to 868 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the route from 868 to 1326 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 877 to 1466 nm out.
AIRMET TANGO 1W: 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 977 to 1127 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1147 to 1476 nm out.
AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft. Over the route from 1326 to 1396 nm out.
AIRMET SIERRA 2E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 1336 to 1426 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 1376 to 1446 nm out.
AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Over the last 140 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 MBS.

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

urgent E75L at 9,000 ft, 42 nm north, 12:30 am EDT (04:30 UTC): remarks: low-level wind shear + 20K 1000-1500 above ground on approach. 1057 nm along the route, 42 nm north of the line.
as filed, and in English
```
ASE UUA /OV ASE/TM 0430/FL090/TP E75L/RM LLWS +/- 20K 1000-1500 AGL ON APCH
```
Report
an urgent report filed through ASE
Where
over ASE
Time
04:30 UTC
Height
at 9,000 ft
Aircraft
E75L
Remarks
low-level wind shear + 20K 1000-1500 above ground on approach
A321 at 31,000 ft, 15 nm southeast, 2:41 am EDT (06:41 UTC): moderate turbulence, remarks: mtw +/-15KT zdvwc. 967 nm along the route, 15 nm southeast of the line.
as filed, and in English
```
COS UA /OV BRK/TM 0641/FL310/TP A321/TB MOD/RM MTW +/-15KT. ZDVWC
```
Report
a routine report filed through COS
Where
over BRK
Time
06:41 UTC
Height
at 31,000 ft
Aircraft
A321
Turbulence
moderate
Remarks
mtw +/-15KT zdvwc
B738 descending, 34 nm north, 2:15 am EDT (06:15 UTC): light chop turbulence. 947 nm along the route, 34 nm north of the line.
as filed, and in English
```
DEN UA /OV DEN/TM 0615/FLDURD/TP B738/TB LGT CHOP
```
Report
a routine report filed through DEN
Where
over DEN
Time
06:15 UTC
Height
during the descent
Aircraft
B738
Turbulence
light chop
A21N at 33,000 ft, 15 nm southeast, 2:59 am EDT (06:59 UTC): light chop turbulence, remarks: mtw a 10-knot loss of airspeed 100FT zdvwc. 967 nm along the route, 15 nm southeast of the line.
as filed, and in English
```
COS UA /OV BRK/TM 0659/FL330/TP A21N/TB LGT CHOP/RM MTW +/-10KT 100FT. ZDVWC
```
Report
a routine report filed through COS
Where
over BRK
Time
06:59 UTC
Height
at 33,000 ft
Aircraft
A21N
Turbulence
light chop
Remarks
mtw a 10-knot loss of airspeed 100FT zdvwc
A20N at 25,000 ft, 42 nm northwest, 2:19 am EDT (06:19 UTC): light chop turbulence up to 26,000 ft, remarks: during the climb ZDVWC-06. 987 nm along the route, 42 nm northwest of the line.
as filed, and in English
```
DEN UA /OV DEN250045/TM 0619/FL250/TP A20N/TB OCNL LGT CHOP BLO 260/RM DURC. ZDVWC-06
```
Report
a routine report filed through DEN
Where
45 nm west (250°) of DEN
Time
06:19 UTC
Height
at 25,000 ft
Aircraft
A20N
Turbulence
occasional light chop below 26,000 ft
Remarks
during the climb ZDVWC-06
E170 at 22,500 ft, 11 nm northwest, 1:06 am EDT (05:06 UTC): light to moderate turbulence up to 23,000 ft, remarks: during the descent tbarr star ZDVWC-13. 997 nm along the route, 11 nm northwest of the line.
as filed, and in English
```
DEN UA /OV DEN216057/TM 0506/FL225/TP E170/TB CONS LGT OCNL MOD BLO 230/RM DURD TBARR STAR. ZDVWC-13
```
Report
a routine report filed through DEN
Where
57 nm southwest (216°) of DEN
Time
05:06 UTC
Height
at 22,500 ft
Aircraft
E170
Turbulence
continuous light occasional moderate below 23,000 ft
Remarks
during the descent tbarr star ZDVWC-13
A320 at 31,000 ft, 41 nm south, 2:58 am EDT (06:58 UTC): light chop turbulence, remarks: mtw a 10-knot loss of airspeed 100FT zdvwc. 1007 nm along the route, 41 nm south of the line.
as filed, and in English
```
PUB UA /OV PUB260040/TM 0658/FL310/TP A320/TB LGT CHOP/RM MTW +/-10KT 100FT. ZDVWC
```
Report
a routine report filed through PUB
Where
40 nm west (260°) of PUB
Time
06:58 UTC
Height
at 31,000 ft
Aircraft
A320
Turbulence
light chop
Remarks
mtw a 10-knot loss of airspeed 100FT zdvwc
CRJ2 at 22,000 ft, 15 nm north, 2:35 am EDT (06:35 UTC): no turbulence up to 26,000 ft, no icing, clear from 22,000 ft to 60,000 ft, remarks: during the descent ZDVWC-26. 1007 nm along the route, 15 nm north of the line.
as filed, and in English
```
DEN UA /OV DEN220060/TM 0635/FL220/TP CRJ2/SK SKC/TB NEG BLO 260/IC NEG/RM DURD/ ZDVWC-26
```
Report
a routine report filed through DEN
Where
60 nm southwest (220°) of DEN
Time
06:35 UTC
Height
at 22,000 ft
Aircraft
CRJ2
Sky
clear
Turbulence
no below 26,000 ft
Icing
none
Remarks
during the descent ZDVWC-26
B738 at 23,000 ft, 24 nm north, 2:23 am EDT (06:23 UTC): no turbulence from 23,000 ft to 26,000 ft, clear from 23,000 ft to 60,000 ft, remarks: during the descent sskii star ZDVWC-06. 1007 nm along the route, 24 nm north of the line.
as filed, and in English
```
DEN UA /OV DEN230060/TM 0623/FL230/TP B738/SK SKC/TB NEG 230-260/RM DURD SSKII STAR. ZDVWC-06
```
Report
a routine report filed through DEN
Where
60 nm southwest (230°) of DEN
Time
06:23 UTC
Height
at 23,000 ft
Aircraft
B738
Sky
clear
Turbulence
no from 23,000 ft to 26,000 ft
Remarks
during the descent sskii star ZDVWC-06
PC12 at 26,000 ft, 22 nm south, 2:27 am EDT (06:27 UTC): light chop turbulence, remarks: ZDVWC-12. 1047 nm along the route, 22 nm south of the line.
as filed, and in English
```
GUC UA /OV HBU090040/TM 0627/FL260/TP PC12/TB OCNL LGT CHOP/RM ZDVWC-12
```
Report
a routine report filed through GUC
Where
40 nm east (090°) of HBU
Time
06:27 UTC
Height
at 26,000 ft
Aircraft
PC12
Turbulence
occasional light chop
Remarks
ZDVWC-12
B38M at 14,000 ft, 38 nm northwest, 1:47 am EDT (05:47 UTC): light rime icing, 6 °C. 1456 nm along the route, 38 nm northwest of the line.
as filed, and in English
```
LAS UA /OV LAS059040/TM 0547/FL140/TP B38M/TA 06/IC LGT RIME
```
Report
a routine report filed through LAS
Where
40 nm northeast (059°) of LAS
Time
05:47 UTC
Height
at 14,000 ft
Aircraft
B38M
Temperature
6 °C
Icing
light rime
B737 at 19,000 ft, 46 nm northwest, 1:45 am EDT (05:45 UTC): light turbulence. 1476 nm along the route, 46 nm northwest of the line.
as filed, and in English
```
LAS UA /OV LAS050012/TM 0545/FL190/TP B737/TB LGT
```
Report
a routine report filed through LAS
Where
12 nm northeast (050°) of LAS
Time
05:45 UTC
Height
at 19,000 ft
Aircraft
B737
Turbulence
light
B737 at 14,500 ft, 36 nm northwest, 1:30 am EDT (05:30 UTC): light turbulence. 1496 nm along the route, 36 nm northwest of the line.
as filed, and in English
```
LAS UA /OV LAS155012/TM 0530/FL145/TP B737/TB LGT
```
Report
a routine report filed through LAS
Where
12 nm southeast (155°) of LAS
Time
05:30 UTC
Height
at 14,500 ft
Aircraft
B737
Turbulence
light
A321 at 3,300 ft, 5 nm south, 12:59 am EDT (04:59 UTC): a broken layer above 3,300 ft, remarks: during the descent. At the destination end, 5 nm south of the line.
as filed, and in English
```
ONT UA /OV ONT078008/TM 0459/FL033/TP A321/SK BKN033-TOPUNKN/RM DURD
```
Report
a routine report filed through ONT
Where
8 nm east (078°) of ONT
Time
04:59 UTC
Height
at 3,300 ft
Aircraft
A321
Sky
a broken layer from 3,300 ft, tops unknown
Remarks
during the descent

3 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 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 15 forecast points nearest it (MKG, DBQ, MCW, DSM, OMA, GRI, GLD, DEN, PUB, ALS, GJT, FMN, BCE, LAS, ONT). 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	230° at 29 kt	+28 kt	16 °C	92 kt	17 h 59 min	6:04 pm PDT (01:04 UTC)
6,500 ft	240° at 25 kt	+25 kt	14 °C	95 kt	17 h 25 min	5:30 pm PDT (00:30 UTC)
8,500 ft	230° at 21 kt	+21 kt	10 °C	99 kt	16 h 43 min	4:48 pm PDT (23:48 UTC)
10,500 ft	230° at 22 kt	+21 kt	6 °C	99 kt	16 h 43 min	4:48 pm PDT (23:48 UTC)
12,500 ft	230° at 23 kt	+22 kt	2 °C	98 kt	16 h 53 min	4:58 pm PDT (23:58 UTC)
14,500 ft	230° at 26 kt	+25 kt	-2 °C	95 kt	17 h 25 min	5:30 pm PDT (00:30 UTC)
16,500 ft	230° at 29 kt	+29 kt	-6 °C	91 kt	18 h 11 min	6:16 pm PDT (01:16 UTC)
18,000 ft FL180	230° at 31 kt	+31 kt	-10 °C	89 kt	18 h 36 min	6:41 pm PDT (01:41 UTC)
24,000 ft FL240	230° at 38 kt	+38 kt	-20 °C	82 kt	20 h 11 min	8:16 pm PDT (03:16 UTC)
30,000 ft FL300	240° at 48 kt	+49 kt	-31 °C	71 kt	23 h 19 min	11:24 pm PDT (06:24 UTC)
34,000 ft FL340	250° at 52 kt	+55 kt	-38 °C	65 kt	25 h 28 min	1:33 am PDT (08:33 UTC)
39,000 ft FL390	250° at 51 kt	+54 kt	-47 °C	66 kt	25 h 05 min	1:10 am PDT (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
MKG	used from 0 nm out; 72 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°
DBQ	used from 199 nm out; 75 nm from the line	230/33	250/30 16°	280/15 9°	260/15 5°	260/21 -7°	260/24 -20°	250/37 -33°	270/42 -43°	280/63 -52°
MCW	used from 349 nm out; 66 nm from the line	220/44	250/30 17°	230/14 12°	240/17 6°	250/22 -8°	270/29 -20°	250/34 -34°	260/52 -43°	260/59 -51°
DSM	used from 399 nm out; 33 nm from the line	230/40	250/33 17°	250/18 12°	240/17 5°	260/28 -8°	270/34 -19°	260/41 -33°	260/55 -41°	270/62 -51°
OMA	used from 499 nm out; 22 nm from the line	220/47	240/33 19°	250/18 11°	230/17 6°	260/29 -8°	250/33 -19°	250/51 -33°	260/61 -40°	270/62 -49°
GRI	used from 598 nm out; 27 nm from the line		230/35 21°	230/23 13°	220/20 7°	240/25 -8°	240/37 -20°	250/49 -33°	260/57 -38°	260/58 -47°
GLD	used from 748 nm out; 69 nm from the line		230/49	230/42 15°	220/26 8°	240/18 -7°	230/27 -21°	240/62 -30°	240/61 -35°	250/57 -47°
DEN	used from 897 nm out; 44 nm from the line			240/21 14°	250/44 6°	220/49 -8°	220/49 -21°	230/54 -30°	240/57 -35°	240/49 -45°
PUB	used from 997 nm out; 72 nm from the line			230/25 13°	230/32 6°	220/44 -8°	230/49 -21°	240/70 -28°	240/67 -34°	240/58 -46°
ALS	used from 1047 nm out; 78 nm from the line				230/37 4°	220/54 -9°	230/62 -22°	240/77 -26°	240/74 -33°	230/59 -45°
GJT	used from 1097 nm out; 68 nm from the line			210/43 7°	230/45 1°	220/49 -12°	220/62 -22°	220/59 -28°	230/60 -33°	220/55 -45°
FMN	used from 1147 nm out; 68 nm from the line			220/28 9°	220/40 2°	220/53 -10°	220/62 -22°	230/79 -28°	240/91 -34°	230/71 -45°
BCE	used from 1246 nm out; 80 nm from the line				220/27 -1°	210/40 -13°	220/54 -21°	220/64 -30°	220/64 -34°	220/52 -44°
LAS	used from 1396 nm out; 84 nm from the line		210/21 10°	200/18 5°	200/23 -2°	210/49 -14°	210/63 -21°	220/58 -30°	220/61 -35°	210/56 -44°
ONT	used from 1546 nm out; 85 nm from the line	190/8	190/19 6°	210/23 4°	210/29 -3°	210/47 -13°	210/49 -19°	220/47 -30°	220/50 -36°	220/55 -43°

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
MBS Saginaw, MI	departure	VFR	from the south-southwest (210°) at 7 knots	7 mi	none	668 ft	2:53 am EDT (06:53 UTC)
MKG Muskegon, MI	100 nm out, 7 nm southeast of the line, tower	reported, no category	from the south (190°) at 6 knots	10+ mi	none	628 ft	06:55 UTC
UES Waukesha, WI	179 nm out, 5 nm west of the line, tower	VFR	from the southwest (220°) at 3 knots	10+ mi	none	911 ft	06:55 UTC
ALO Waterloo, IA	369 nm out, 16 nm north of the line, tower	VFR	from the south (180°) at 9 knots	10+ mi	none	873 ft	06:54 UTC
GRI Grand Island, NE	648 nm out, 3 nm southwest of the line, tower	VFR	from the south (180°) at 12 knots	10+ mi	none	1,847 ft	06:53 UTC
EAR Kearney, NE	688 nm out, 6 nm southeast of the line	VFR	from the south (170°) at 10 knots	10+ mi	none	2,131 ft	06:56 UTC
COS Colorado Springs, CO	967 nm out, 21 nm south of the line, tower	VFR Sky: a few clouds at 14,000 feet, a few clouds at 20,000 feet	from the west-southwest (240°) at 7 knots	10+ mi	none	6,187 ft	06:54 UTC
GUC Gunnison, CO	1077 nm out, 6 nm north of the line	VFR	variable at 3 knots	10+ mi	none	7,679 ft	06:56 UTC
BDG Blanding, UT	1207 nm out, 3 nm northwest of the line	VFR Sky: a broken layer at 4,100 feet, overcast at 4,900 feet Weather: light rain	from the south (170°) at 11 knots	10+ mi	4,100 ft	5,867 ft	06:15 UTC
SBD San Bernardino, CA	1635 nm out, 8 nm south of the line, tower	VFR Sky: scattered clouds at 3,900 feet, overcast at 5,500 feet	calm	10+ mi	5,500 ft	1,159 ft	07:00 UTC
ONT Ontario, CA	destination	marginal VFR Sky: a broken layer at 2,600 feet, overcast at 3,500 feet	from the north (350°) at 3 knots	7 mi	2,600 ft	944 ft	11:53 pm PDT (06:53 UTC)

The highest airport on this list sits at 7,679 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At ONT when you get there the forecast at the estimated arrival, 4:48 pm PDT (23:48 UTC)

Wind from the west-southwest at 11 knots, gusting to 18, visibility more than 6 miles, a broken layer at 5,000 feet VFR

The whole forecast for ONT

From Sun 11:00 pm PDT (06:00 UTC): wind from the west-southwest at 6 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 5,000 feet
From Mon 2:00 am PDT (09:00 UTC): wind from the west-southwest at 4 knots, visibility more than 6 miles, showers nearby, a broken layer at 2,500 feet, a broken layer at 5,000 feet
From Mon 11:00 am PDT (18:00 UTC): wind from the west-southwest at 5 knots, visibility more than 6 miles, a broken layer at 5,000 feet
From Mon 2:00 pm PDT (21:00 UTC): wind from the west-southwest at 11 knots, gusting to 18, visibility more than 6 miles, a broken layer at 5,000 feet
From Mon 8:00 pm PDT (03:00 UTC): wind from the west-southwest at 9 knots, visibility more than 6 miles, a broken layer at 6,000 feet

The forecast for MBS, the departure

From Mon 2:00 am EDT (06:00 UTC): wind from the south-southwest at 5 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
From Mon 10:00 am EDT (14:00 UTC): wind from the southwest at 11 knots, visibility more than 6 miles, a broken layer at 25,000 feet
From Mon 12:00 pm EDT (16:00 UTC): wind from the southwest at 14 knots, gusting to 24, 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 7 knots, visibility more than 6 miles, scattered clouds at 9,000 feet, a broken layer at 20,000 feet

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

6/8784 LAKE GEORGE, CO, Sunday, October 11, 2026 through Tuesday, October 13, 2026 UTC on the route, 997 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZDV
6/8890 LAS VEGAS, NV, Tuesday, October 13, 2026 Local 19 nm from the route, 1486 nm along the route · a VIP movement · starts tomorrow · ZLA
6/8891 Bullhead City, AZ, Wednesday, October 14, 2026 Local 6 nm from the route, 1496 nm along the route · a VIP movement · starts Wednesday 14 October · ZLA
4/3635 DISNEYLAND THEME PARK, ANAHEIM,, CA 19 nm from the route, at the destination end · security · ZLA

Daylight

Sunset at MBS 6:58 pm EDT (22:58 UTC), at ONT 6:18 pm PDT (01:18 UTC) (civil twilight ends 6:44 pm PDT (01:44 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: Mbs International, Ontario International.