Plan a flight · Mon 2:07 am PDT (09:07 UTC)

Oakland San Francisco Bay Airport to University Of Illinois/Willard Airport OAK → CMI

1,583 nautical miles (1,822 statute miles) east on a straight line, true course 074°, about 060° magnetic at the departure end (variation 14E). At 120 knots that is 9 h at the quickest height in today's winds (34,000 ft, a 56-knot tailwind), arriving about 1:07 pm CDT (18:07 UTC). Right now OAK is VFR, wind from the east-southeast (110°) at 5 knots; CMI is VFR, wind from the south (180°) 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

SIGMET W18W: thunderstorms (a convective SIGMET) up to 30,000 ft, moving from the southwest at 20 knots, until 3:55 am PDT (10:55 UTC). Over the route from 348 to 438 nm out.

as issued

WSUS33 KKCI 120855
MKCW WST 120855
CONVECTIVE SIGMET 18W
VALID UNTIL 1055Z
AZ UT NV
FROM 20WNW BVL-30N BCE-60SSW BCE-50NNE LAS-60NNW ELY-20WNW BVL
AREA TS MOV FROM 24020KT. TOPS TO FL300.

AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 159 nm of the route.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 229 to 757 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 229 to 767 nm out.
AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 299 to 657 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the route from 488 to 866 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 597 to 826 nm out.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the route from 667 to 836 nm out.
AIRMET TANGO 2W: 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 966 to 1454 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 OAK.

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

A35K at 32,000 ft, 23 nm north, 1:39 am PDT (08:39 UTC): moderate chop turbulence, remarks: fdcs zoa. At the departure end, 23 nm north of the line.
as filed, and in English
```
OAK UA /OV OAK348024/TM 0839/FL320/TP A35K/TB MOD CHOP/RM FDCS ZOA
```
Report
a routine report filed through OAK
Where
24 nm north (348°) of OAK
Time
08:39 UTC
Height
at 32,000 ft
Aircraft
A35K
Turbulence
moderate chop
Remarks
fdcs zoa
B737 at 18,000 ft, 25 nm north, 12:24 am PDT (07:24 UTC): moderate turbulence, remarks: FL180-130. 816 nm along the route, 25 nm north of the line.
as filed, and in English
```
DEN UA /OV DEN330050/TM 0724/FL180/TP B737/TB MOD/RM FL180-130
```
Report
a routine report filed through DEN
Where
50 nm northwest (330°) of DEN
Time
07:24 UTC
Height
at 18,000 ft
Aircraft
B737
Turbulence
moderate
Remarks
FL180-130
E170 at 4,800 ft, 46 nm south, 11:31 pm PDT (06:31 UTC): no turbulence, no icing, clear from 4,800 ft to 60,000 ft, remarks: during the descent rnav Y 11 lgjt zdvwc. 647 nm along the route, 46 nm south of the line.
as filed, and in English
```
GJT UA /OV GJT/TM 0631/FL048/TP E170/SK SKC/TB NEG/IC NEG/RM DURD RNAV Y 11 LGJT. ZDVWC
```
Report
a routine report filed through GJT
Where
over GJT
Time
06:31 UTC
Height
at 4,800 ft
Aircraft
E170
Sky
clear
Turbulence
none
Icing
none
Remarks
during the descent rnav Y 11 lgjt zdvwc
A20N at 25,000 ft, 28 nm south, 11:19 pm PDT (06:19 UTC): light chop turbulence up to 26,000 ft, remarks: during the climb ZDVWC-06. 787 nm along the route, 28 nm south 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
B737 descending, 23 nm south, 1:10 am PDT (08:10 UTC): light chop turbulence. 826 nm along the route, 23 nm south of the line.
as filed, and in English
```
DEN UA /OV DEN/TM 0810/FLDURD/TP B737/TB LGT CHOP
```
Report
a routine report filed through DEN
Where
over DEN
Time
08:10 UTC
Height
during the descent
Aircraft
B737
Turbulence
light chop
B737 descending, 23 nm south, 12:10 am PDT (07:10 UTC): remarks: smooth. 826 nm along the route, 23 nm south of the line.
as filed, and in English
```
DEN UA /OV DEN/TM 0710/FLDURD/TP B737/RM SMOOTH
```
Report
a routine report filed through DEN
Where
over DEN
Time
07:10 UTC
Height
during the descent
Aircraft
B737
Remarks
smooth
B738 descending, 23 nm south, 11:15 pm PDT (06:15 UTC): light chop turbulence. 826 nm along the route, 23 nm south 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

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 14 forecast points nearest it (SFO, SAC, RNO, BIH, ELY, SLC, GJT, DEN, GLD, GRI, OMA, DSM, BRL, SPI). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
5,500 ft	240° at 21 kt	−19 kt	23 °C	139 kt	11 h 23 min	3:30 pm CDT (20:30 UTC)
7,500 ft	240° at 20 kt	−18 kt	10 °C	138 kt	11 h 28 min	3:35 pm CDT (20:35 UTC)
9,500 ft	240° at 20 kt	−17 kt	6 °C	137 kt	11 h 33 min	3:40 pm CDT (20:40 UTC)
11,500 ft	230° at 23 kt	−19 kt	2 °C	139 kt	11 h 23 min	3:30 pm CDT (20:30 UTC)
13,500 ft	230° at 25 kt	−21 kt	-2 °C	141 kt	11 h 14 min	3:21 pm CDT (20:21 UTC)
15,500 ft	240° at 27 kt	−23 kt	-6 °C	143 kt	11 h 04 min	3:11 pm CDT (20:11 UTC)
17,500 ft	240° at 29 kt	−26 kt	-10 °C	146 kt	10 h 51 min	2:58 pm CDT (19:58 UTC)
18,000 ft FL180	240° at 30 kt	−26 kt	-11 °C	146 kt	10 h 51 min	2:58 pm CDT (19:58 UTC)
24,000 ft FL240	240° at 38 kt	−34 kt	-22 °C	154 kt	10 h 17 min	2:24 pm CDT (19:24 UTC)
30,000 ft FL300	240° at 50 kt	−48 kt	-32 °C	168 kt	9 h 25 min	1:32 pm CDT (18:32 UTC)
34,000 ft FL340	250° at 57 kt	−56 kt	-37 °C	176 kt	9 h	1:07 pm CDT (18:07 UTC)
39,000 ft FL390	250° at 54 kt	−53 kt	-46 °C	173 kt	9 h 09 min	1:16 pm CDT (18:16 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
SFO	used from 0 nm out; 34 nm from the line	090/9	050/12 4°	010/17 -2°	350/34 -3°	360/70 -11°	360/75 -22°	350/57 -38°	330/37 -42°	280/25 -44°
SAC	used from 50 nm out; 47 nm from the line	L/V	L/V 4°	340/9 -4°	340/22 -8°	360/71 -12°	360/82 -23°	350/58 -37°	310/30 -40°	270/25 -44°
RNO	used from 100 nm out; 75 nm from the line		010/6	270/12 -3°	220/26 -10°	280/13 -19°	350/44 -24°	320/30 -32°	260/22 -36°	240/24 -42°
BIH	used from 149 nm out; 66 nm from the line		L/V	020/6 0°	140/7 -7°	210/31 -16°	230/34 -26°	220/43 -30°	220/52 -36°	220/46 -43°
ELY	used from 249 nm out; 86 nm from the line			210/34 1°	220/40 -4°	220/39 -17°	210/51 -24°	220/65 -30°	220/60 -37°	220/56 -44°
SLC	used from 448 nm out; 83 nm from the line		200/16	210/23 4°	220/34 -3°	210/40 -16°	220/66 -23°	220/64 -31°	220/57 -36°	220/50 -43°
GJT	used from 548 nm out; 88 nm from the line			220/26 6°	230/39 0°	220/55 -13°	230/60 -23°	230/78 -31°	230/80 -35°	230/74 -44°
DEN	used from 747 nm out; 61 nm from the line			270/24 11°	230/13 5°	230/48 -8°	230/46 -20°	230/63 -30°	240/78 -36°	240/78 -48°
GLD	used from 896 nm out; 73 nm from the line		260/37	260/25 14°	250/27 8°	230/36 -8°	230/49 -21°	250/71 -30°	260/82 -36°	250/73 -48°
GRI	used from 1045 nm out; 63 nm from the line		230/39 23°	230/32 15°	210/29 7°	230/31 -8°	230/43 -21°	250/52 -31°	260/59 -35°	260/59 -46°
OMA	used from 1195 nm out; 56 nm from the line	230/47	240/33 21°	230/22 13°	220/27 5°	240/35 -8°	250/43 -21°	260/47 -33°	260/59 -36°	270/58 -46°
DSM	used from 1294 nm out; 73 nm from the line	250/47	260/25 20°	240/19 11°	240/31 5°	250/26 -9°	260/38 -20°	260/47 -34°	270/58 -37°	270/61 -47°
BRL	used from 1394 nm out; 45 nm from the line	250/32	250/19 17°	260/15 11°	270/16 3°	290/23 -7°	260/42 -20°	270/52 -34°	280/63 -39°	290/64 -48°
SPI	used from 1493 nm out; 18 nm from the line	260/28	250/22 15°	250/14 9°	260/20 6°	280/27 -7°	280/34 -19°	280/48 -32°	280/59 -41°	300/60 -49°

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
OAK Oakland, CA	departure	VFR Sky: a few clouds at 2,000 feet	from the east-southeast (110°) at 5 knots	10+ mi	none	9 ft	1:53 am PDT (08:53 UTC)
SCK Stockton, CA	50 nm out, 3 nm southwest of the line, tower	VFR Sky: scattered clouds at 9,500 feet	from the northeast (050°) at 4 knots	10+ mi	none	32 ft	08:55 UTC
HTH Hawthorne, NV	179 nm out, 6 nm northwest of the line	VFR Sky: a few clouds at 300 feet Weather: haze	from the northwest (320°) at 5 knots	6 mi	none	4,230 ft	08:55 UTC
DTA Delta, UT	468 nm out, 3 nm south of the line	VFR	from the north-northeast (030°) at 7 knots, gusting to 18	10+ mi	none	4,759 ft	17:35 UTC
PUC Price, UT	548 nm out, 3 nm southeast of the line	marginal VFR Sky: a broken layer at 2,400 feet, a broken layer at 3,100 feet, overcast at 3,700 feet	from the east-southeast (110°) at 4 knots	10+ mi	2,400 ft	5,957 ft	08:53 UTC
EGE Eagle, CO	727 nm out, 23 nm south of the line, tower	VFR Sky: scattered clouds at 7,000 feet, overcast at 9,000 feet	from the west (270°) at 4 knots	10+ mi	9,000 ft	6,547 ft	08:56 UTC
BJC Denver, CO	806 nm out, 15 nm south of the line, tower	VFR	from the south (190°) at 7 knots	10+ mi	none	5,673 ft	08:55 UTC
HDE Holdrege, NE	1075 nm out, 4 nm north of the line	VFR	from the south (180°) at 7 knots	10+ mi	none	2,313 ft	08:55 UTC
BIE Beatrice, NE	1195 nm out, 6 nm south of the line	VFR	from the south (190°) at 11 knots, gusting to 16	10+ mi	none	1,323 ft	08:55 UTC
EVU Maryville, MO	1274 nm out, 4 nm southeast of the line	VFR	from the south-southwest (200°) at 14 knots, gusting to 20	10+ mi	none	1,145 ft	08:55 UTC
DEC Decatur, IL	1553 nm out, 15 nm south of the line, tower	VFR	from the southwest (220°) at 10 knots	10+ mi	none	681 ft	08:54 UTC
CMI Champaign/Urbana, IL	destination	VFR	from the south (180°) at 3 knots	10+ mi	none	754 ft	3:53 am CDT (08:53 UTC)

The highest airport on this list sits at 6,547 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At CMI when you get there the forecast at the estimated arrival, 1:07 pm CDT (18:07 UTC)

Wind from the south-southwest at 11 knots, visibility more than 6 miles, scattered clouds at 21,000 feet VFR

The whole forecast for CMI

From Mon 1:00 am CDT (06:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
From Mon 9:00 am CDT (14:00 UTC): wind from the south-southwest at 11 knots, visibility more than 6 miles, scattered clouds at 21,000 feet

The forecast for OAK, the departure

From Sun 11:00 pm PDT (06:00 UTC): wind from the south at 7 knots, visibility more than 6 miles, a few clouds at 1,500 feet
From Mon 2:00 am PDT (09:00 UTC): wind from the east-southeast at 5 knots, visibility more than 6 miles, a few clouds at 1,500 feet
From Mon 11:00 am PDT (18:00 UTC): wind from the west at 8 knots, visibility more than 6 miles, clear skies

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

6/8911 DENVER, CO, Monday, October 12, 2026 UTC 12 nm from the route, 816 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · today · ZDV

Daylight

Sunset at OAK 6:34 pm PDT (01:34 UTC), at CMI 6:18 pm CDT (23:18 UTC) (civil twilight ends 6:45 pm CDT (23:45 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 Pacific Southwest · loop National Weather Service

Radar now, the southern Rockies · 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: Oakland San Francisco Bay Airport, University Of Illinois/Willard Airport.