Harry Reid International to Casper/Natrona County International LAS → CPR
574 nautical miles (660 statute miles) northeast on a straight line, true course 042°, about 031° magnetic at the departure end (variation 11E). At 120 knots that is 3 h 06 min at the quickest height in today's winds (39,000 ft, a 65-knot tailwind), arriving about 10:44 pm MDT (04:44 UTC), after sunset at the destination. 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 3W: thunderstorms (a convective SIGMET) up to 31,000 ft, moving from the southwest at 40 knots, until 7:55 pm PDT (02:55 UTC). Over the last 59 nm of the route.
as issued
WSUS33 KKCI 120055 MKCW WST 120055 CONVECTIVE SIGMET 3W VALID UNTIL 0255Z MT WY FROM 10WSW MLS-70E DDY-20N LAR-50E BPI-30NE BIL-10WSW MLS AREA TS MOV FROM 22040KT. TOPS TO FL310.
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the first 514 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the whole route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 10 to 524 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 554 nm of the route.
- 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 40 to 366 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 last 228 nm of the route.
- AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 376 to 495 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 LAS.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
Not fetched just now.
Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 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 5 forecast points nearest it (LAS, BCE, SLC, RKS, LND). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 7,500 ft | 200° at 30 kt | −27 kt | 9 °C | 147 kt | 3 h 54 min | 11:32 pm MDT (05:32 UTC) |
| 9,500 ft | 200° at 36 kt | −33 kt | 5 °C | 153 kt | 3 h 45 min | 11:23 pm MDT (05:23 UTC) |
| 11,500 ft | 210° at 46 kt | −44 kt | 1 °C | 164 kt | 3 h 30 min | 11:08 pm MDT (05:08 UTC) |
| 13,500 ft | 210° at 49 kt | −47 kt | -2 °C | 167 kt | 3 h 26 min | 11:04 pm MDT (05:04 UTC) |
| 15,500 ft | 210° at 49 kt | −47 kt | -6 °C | 167 kt | 3 h 26 min | 11:04 pm MDT (05:04 UTC) |
| 17,500 ft | 210° at 50 kt | −48 kt | -10 °C | 168 kt | 3 h 25 min | 11:03 pm MDT (05:03 UTC) |
| 18,000 ft FL180 | 210° at 50 kt | −48 kt | -11 °C | 168 kt | 3 h 25 min | 11:03 pm MDT (05:03 UTC) |
| 24,000 ft FL240 | 210° at 46 kt | −45 kt | -22 °C | 165 kt | 3 h 29 min | 11:07 pm MDT (05:07 UTC) |
| 30,000 ft FL300 | 210° at 51 kt | −50 kt | -29 °C | 170 kt | 3 h 23 min | 11:01 pm MDT (05:01 UTC) |
| 34,000 ft FL340 | 220° at 61 kt | −61 kt | -36 °C | 181 kt | 3 h 10 min | 10:48 pm MDT (04:48 UTC) |
| 39,000 ft FL390 | 230° at 66 kt | −65 kt | -45 °C | 185 kt | 3 h 06 min | 10:44 pm MDT (04:44 UTC) |
Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| LAS | used from 0 nm out; 25 nm from the line | 200/25 11° | 230/22 5° | 240/25 -1° | 220/37 -12° | 220/44 -21° | 210/52 -27° | 210/60 -34° | 220/58 -44° | |
| BCE | used from 99 nm out; 61 nm from the line | 210/47 0° | 200/50 -12° | 220/31 -23° | 220/56 -26° | 220/58 -35° | 230/58 -45° | |||
| SLC | used from 247 nm out; 90 nm from the line | 280/8 | 210/39 5° | 210/52 -1° | 200/50 -11° | 200/56 -23° | 220/61 -28° | 230/73 -37° | 230/73 -45° | |
| RKS | used from 346 nm out; 69 nm from the line | 190/43 | 210/65 3° | 210/57 -9° | 210/56 -21° | 210/47 -33° | 230/63 -37° | 240/77 -46° | ||
| LND | used from 495 nm out; 68 nm from the line | 180/33 10° | 190/50 3° | 210/59 -9° | 200/50 -21° | 190/41 -34° | 230/55 -39° | 240/65 -47° |
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 |
|---|---|---|---|---|---|---|---|
| LAS Las Vegas, NV | departure | no report just now | 2,183 ft | ||||
| SGU St George, UT | 99 nm out, 20 nm southeast of the line | no report just now | 2,883 ft | ||||
| CDC Cedar City, UT | 139 nm out, 7 nm southeast of the line | no report just now | 5,622 ft | ||||
| RIF Richfield, UT | 218 nm out, 2 nm west of the line | no report just now | 5,318 ft | ||||
| PUC Price, UT | 297 nm out, 7 nm southeast of the line | no report just now | 5,957 ft | ||||
| VEL Vernal, UT | 376 nm out, 13 nm southeast of the line | no report just now | 5,274 ft | ||||
| RKS Rock Springs, WY | 435 nm out, 23 nm northwest of the line | no report just now | 6,764 ft | ||||
| CPR Casper, WY | destination | no report just now | 5,344 ft |
The highest airport on this list sits at 6,764 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At CPR when you get there the forecast at the estimated arrival, 10:44 pm MDT (04:44 UTC)
CPR has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/8890 LAS VEGAS, NV, Tuesday, October 13, 2026 Local on the route, at the departure end · a VIP movement · starts tomorrow · ZLA
- 6/8808 Las Vegas, NV, Tuesday, October 13, 2026 Local on the route, at the departure end · security · starts tomorrow · ZLA
Daylight
Sunset at LAS 6:08 pm PDT (01:08 UTC), at CPR 6:28 pm MDT (00:28 UTC) (civil twilight ends 6:56 pm MDT (00:56 UTC)). At 120 knots the arrival at CPR is after sunset there (6:30 pm MDT (00:30 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
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: Harry Reid International, Casper/Natrona County International.