Plan a flight · Mon 7:59 am MDT (13:59 UTC)

Cheyenne Rgnl/Jerry Olson Field to St. Louis Lambert International CYS → STL

679 nautical miles (782 statute miles) east on a straight line, true course 098°, about 088° magnetic at the departure end (variation 10E). At 120 knots that is 3 h 48 min at the quickest height in today's winds (34,000 ft, a 59-knot tailwind), arriving about 12:47 pm CDT (17:47 UTC). Right now CYS is VFR, wind calm; STL is VFR, wind from the southwest (220°) 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: 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 TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the first 80 nm of the route.
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 320 to 619 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 CYS.

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

B737 at 16,000 ft, 49 nm south, 6:23 am MDT (12:23 UTC): moderate turbulence, remarks: during the descent. At the departure end, 49 nm south of the line.
as filed, and in English
```
DEN UA /OV DEN320040/TM 1223/FL160/TP B737/TB MOD/RM DURD
```
Report
a routine report filed through DEN
Where
40 nm northwest (320°) of DEN
Time
12:23 UTC
Height
at 16,000 ft
Aircraft
B737
Turbulence
moderate
Remarks
during the descent
CRJ2 at 24,000 ft, 46 nm southwest, 5:45 am MDT (11:45 UTC): no turbulence, remarks: ZDVWC-13. At the departure end, 46 nm southwest of the line.
as filed, and in English
```
DEN UA /OV DEN314057/TM 1145/FL240/TP CRJ2/TB NEG/RM ZDVWC-13
```
Report
a routine report filed through DEN
Where
57 nm northwest (314°) of DEN
Time
11:45 UTC
Height
at 24,000 ft
Aircraft
CRJ2
Turbulence
none
Remarks
ZDVWC-13
B738 at 38,000 ft, 22 nm north, 7:09 am MDT (13:09 UTC): light chop turbulence, remarks: ZDVWC-35. 180 nm along the route, 22 nm north of the line.
as filed, and in English
```
LBF UA /OV LBF/TM 1309/FL380/TP B738/TB CONS LGT CHOP/RM -ZDVWC-35
```
Report
a routine report filed through LBF
Where
over LBF
Time
13:09 UTC
Height
at 38,000 ft
Aircraft
B738
Turbulence
continuous light chop
Remarks
ZDVWC-35
CRJ7 at 36,000 ft, 22 nm north, 6:09 am MDT (12:09 UTC): light chop turbulence, remarks: zdvwc. 180 nm along the route, 22 nm north of the line.
as filed, and in English
```
LBF UA /OV LBF/TM 1209/FL360/TP CRJ7/TB LGT CHOP/RM ZDVWC
```
Report
a routine report filed through LBF
Where
over LBF
Time
12:09 UTC
Height
at 36,000 ft
Aircraft
CRJ7
Turbulence
light chop
Remarks
zdvwc
B38M at 39,000 ft, 14 nm north, 6:43 am MDT (12:43 UTC): light chop turbulence. 260 nm along the route, 14 nm north of the line.
as filed, and in English
```
HSI UA /OV HSI270030/TM 1243/FL390/TP B38M/TB CONS LGT CHOP
```
Report
a routine report filed through HSI
Where
30 nm west (270°) of HSI
Time
12:43 UTC
Height
at 39,000 ft
Aircraft
B38M
Turbulence
continuous light chop
B38M at 18,000 ft, 37 nm north, 7:04 am MDT (13:04 UTC): light chop turbulence. 450 nm along the route, 37 nm north of the line.
as filed, and in English
```
EVU UA /OV EVU/TM 1304/FL180/TP B38M/TB CONS LGT CHOP
```
Report
a routine report filed through EVU
Where
over EVU
Time
13:04 UTC
Height
at 18,000 ft
Aircraft
B38M
Turbulence
continuous 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 7 forecast points nearest it (BFF, GLD, GRI, OMA, MKC, COU, STL). 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	250° at 29 kt	−24 kt	23 °C	144 kt	4 h 43 min	1:42 pm CDT (18:42 UTC)
7,500 ft	240° at 25 kt	−20 kt	16 °C	140 kt	4 h 51 min	1:50 pm CDT (18:50 UTC)
9,500 ft	240° at 23 kt	−17 kt	12 °C	137 kt	4 h 57 min	1:56 pm CDT (18:56 UTC)
11,500 ft	230° at 24 kt	−16 kt	7 °C	136 kt	5 h	1:59 pm CDT (18:59 UTC)
13,500 ft	230° at 25 kt	−17 kt	3 °C	137 kt	4 h 57 min	1:56 pm CDT (18:56 UTC)
15,500 ft	240° at 27 kt	−19 kt	-2 °C	139 kt	4 h 53 min	1:52 pm CDT (18:52 UTC)
17,500 ft	240° at 29 kt	−21 kt	-7 °C	141 kt	4 h 49 min	1:48 pm CDT (18:48 UTC)
18,000 ft FL180	240° at 29 kt	−21 kt	-8 °C	141 kt	4 h 49 min	1:48 pm CDT (18:48 UTC)
24,000 ft FL240	240° at 40 kt	−29 kt	-20 °C	149 kt	4 h 33 min	1:32 pm CDT (18:32 UTC)
30,000 ft FL300	260° at 57 kt	−53 kt	-31 °C	173 kt	3 h 55 min	12:54 pm CDT (17:54 UTC)
34,000 ft FL340	260° at 62 kt	−59 kt	-37 °C	179 kt	3 h 48 min	12:47 pm CDT (17:47 UTC)
39,000 ft FL390	270° at 58 kt	−57 kt	-47 °C	177 kt	3 h 50 min	12:49 pm CDT (17:49 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
BFF	used from 0 nm out; 55 nm from the line		280/28	260/39 11°	240/34 5°	210/38 -11°	210/52 -22°	230/61 -31°	230/61 -36°	240/56 -45°
GLD	used from 100 nm out; 90 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 200 nm out; 77 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 350 nm out; 84 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°
MKC	used from 400 nm out; 66 nm from the line	240/49	240/21 20°	220/19 13°	230/21 6°	260/26 -7°	250/37 -19°	270/66 -31°	270/65 -38°	280/60 -48°
COU	used from 549 nm out; 29 nm from the line	250/36	260/14 16°	250/5 12°	260/12 6°	260/24 -7°	260/35 -19°	280/58 -31°	280/62 -40°	290/60 -49°
STL	used from 649 nm out; 15 nm from the line	250/26	240/21 15°	240/22 11°	250/23 6°	270/28 -7°	260/30 -19°	280/52 -31°	280/57 -40°	300/57 -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
CYS Cheyenne, WY	departure	VFR	calm	10+ mi	none	6,159 ft	7:53 am MDT (13:53 UTC)
IBM Kimball, NE	50 nm out, 9 nm north of the line	VFR	from the northwest (320°) at 3 knots	10+ mi	none	4,925 ft	13:35 UTC
SNY Sidney, NE	80 nm out, 9 nm northeast of the line	VFR	from the south (190°) at 9 knots, gusting to 17	10+ mi	none	4,314 ft	19:53 UTC
GGF Grant, NE	140 nm out, 4 nm north of the line	VFR	from the north-northwest (330°) at 10 knots	10+ mi	none	3,424 ft	13:35 UTC
HDE Holdrege, NE	250 nm out, 3 nm southeast of the line	VFR	from the south-southwest (210°) at 10 knots	10+ mi	none	2,313 ft	13:35 UTC
HJH Hebron, NE	330 nm out, 6 nm southeast of the line	VFR	from the south (190°) at 10 knots, gusting to 14	10+ mi	none	1,468 ft	13:35 UTC
FBY Fairbury, NE	350 nm out, 4 nm northeast of the line	no report just now				1,478 ft
STJ St Joseph, MO	460 nm out, 3 nm north of the line, tower	VFR	from the south (190°) at 14 knots, gusting to 21	10+ mi	none	826 ft	13:53 UTC
MCI Kansas City, MO	480 nm out, 23 nm southwest of the line, tower	VFR Sky: a broken layer at 20,000 feet	from the south-southwest (200°) at 15 knots, gusting to 25	10+ mi	20,000 ft	1,027 ft	13:53 UTC
COU Columbia, MO	599 nm out, 21 nm southwest of the line, tower	VFR	from the south (190°) at 7 knots	10+ mi	none	889 ft	13:54 UTC
FYG Washington, MO	649 nm out, 18 nm south of the line	VFR Weather: mist	calm	6 mi	none	487 ft	06:15 UTC
STL St Louis, MO	destination	VFR	from the southwest (220°) at 12 knots	10+ mi	none	617 ft	8:51 am CDT (13:51 UTC)

The highest airport on this list sits at 6,159 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At STL when you get there the forecast at the estimated arrival, 12:47 pm CDT (17:47 UTC)

Wind from the southwest at 12 knots, gusting to 20, visibility more than 6 miles, clear skies VFR

The whole forecast for STL

From Mon 7:00 am CDT (12:00 UTC): wind from the southwest at 6 knots, visibility more than 6 miles, a few clouds at 25,000 feet
From Mon 10:00 am CDT (15:00 UTC): wind from the southwest at 12 knots, gusting to 20, visibility more than 6 miles, clear skies

The forecast for CYS, the departure

From Mon 6:00 am MDT (12:00 UTC): wind from the west-southwest at 8 knots, visibility more than 6 miles, a few clouds at 9,000 feet, a few clouds at 25,000 feet
From Mon 8:30 am MDT (14:30 UTC): wind from the west at 16 knots, gusting to 30, visibility more than 6 miles, a few clouds at 25,000 feet
From Mon 11:00 am MDT (17:00 UTC): wind from the southwest at 13 knots, gusting to 22, visibility more than 6 miles, scattered clouds at 7,000 feet, scattered clouds at 25,000 feet
From Mon 6:00 pm MDT (00:00 UTC): wind from the northeast at 15 knots, gusting to 25, visibility more than 6 miles, a broken layer at 7,000 feet, overcast at 11,000 feet
From Mon 10:00 pm MDT (04:00 UTC): wind from the northeast at 10 knots, visibility more than 6 miles, showers nearby, a broken layer at 4,000 feet, overcast at 5,000 feet
From Tue 4:00 am MDT (10:00 UTC): wind light and variable, visibility 3 miles, mist, fog nearby, a broken layer at 1,000 feet

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

6/7634 CENTRALIA, MO, Monday, October 12, 2026 UTC 3 nm from the route, 589 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · today · ZKC

Daylight

Sunset at CYS 6:21 pm MDT (00:21 UTC), at STL 6:27 pm CDT (23:27 UTC) (civil twilight ends 6:54 pm CDT (23:54 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 northern Rockies · loop National Weather Service

Radar now, the upper Mississippi valley · 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: Cheyenne Rgnl/Jerry Olson Field, St. Louis Lambert International.