Billings Logan International to Harry Reid International BIL → LAS
656 nautical miles (755 statute miles) southwest on a straight line, true course 209°, about 199° magnetic at the departure end (variation 10E). At 120 knots that is 5 h 39 min at the quickest height in today's winds (4,500 ft, a 4-knot headwind), arriving about 12:17 am PDT (07:17 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: 260 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 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the first 258 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the first 636 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 first 646 nm of the route.
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the last 626 nm of the route.
- 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 129 to 209 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 527 to 616 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 BIL.
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 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 6 forecast points nearest it (BIL, LND, PIH, SLC, ELY, LAS). 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 | 190° at 5 kt | +4 kt | 11 °C | 116 kt | 5 h 39 min | 12:17 am PDT (07:17 UTC) |
| 6,500 ft | 200° at 7 kt | +7 kt | 10 °C | 113 kt | 5 h 48 min | 12:26 am PDT (07:26 UTC) |
| 8,500 ft | 200° at 20 kt | +20 kt | 6 °C | 100 kt | 6 h 34 min | 1:12 am PDT (08:12 UTC) |
| 10,500 ft | 210° at 27 kt | +27 kt | 2 °C | 93 kt | 7 h 03 min | 1:41 am PDT (08:41 UTC) |
| 12,500 ft | 210° at 33 kt | +33 kt | -1 °C | 87 kt | 7 h 32 min | 2:10 am PDT (09:10 UTC) |
| 14,500 ft | 210° at 37 kt | +37 kt | -5 °C | 83 kt | 7 h 54 min | 2:32 am PDT (09:32 UTC) |
| 16,500 ft | 210° at 42 kt | +41 kt | -8 °C | 79 kt | 8 h 18 min | 2:56 am PDT (09:56 UTC) |
| 18,000 ft FL180 | 210° at 45 kt | +45 kt | -11 °C | 75 kt | 8 h 45 min | 3:23 am PDT (10:23 UTC) |
| 24,000 ft FL240 | 210° at 53 kt | +53 kt | -23 °C | 67 kt | 9 h 47 min | 4:25 am PDT (11:25 UTC) |
| 30,000 ft FL300 | 210° at 58 kt | +57 kt | -30 °C | 63 kt | 10 h 25 min | 5:03 am PDT (12:03 UTC) |
| 34,000 ft FL340 | 220° at 68 kt | +66 kt | -38 °C | 54 kt | 12 h 09 min | 6:47 am PDT (13:47 UTC) |
| 39,000 ft FL390 | 230° at 69 kt | +64 kt | -45 °C | 56 kt | 11 h 43 min | 6:21 am PDT (13:21 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BIL | used from 0 nm out; 25 nm from the line | 080/24 | 130/14 -1° | 180/33 0° | 210/43 -10° | 220/58 -21° | 200/55 -36° | 220/75 -44° | 240/83 -48° | |
| LND | used from 99 nm out; 89 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° | ||
| PIH | used from 199 nm out; 73 nm from the line | 270/10 | 270/13 1° | 210/16 -2° | 200/56 -11° | 200/51 -23° | 200/68 -33° | 220/77 -37° | 230/73 -44° | |
| SLC | used from 248 nm out; 64 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° | |
| ELY | used from 398 nm out; 86 nm from the line | 210/20 4° | 240/21 -1° | 230/37 -13° | 200/58 -25° | 220/73 -27° | 220/73 -36° | 220/69 -44° | ||
| LAS | used from 547 nm out; 84 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° |
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 |
|---|---|---|---|---|---|---|---|
| BIL Billings, MT | departure | no report just now | 3,662 ft | ||||
| RED Red Lodge, MT | 50 nm out, 8 nm northwest of the line | no report just now | 5,762 ft | ||||
| COD Cody, WY | 80 nm out, 20 nm southeast of the line | no report just now | 5,102 ft | ||||
| JAC Jackson, WY | 159 nm out, 19 nm northwest of the line, tower | no report just now | 6,451 ft | ||||
| AFO Afton, WY | 209 nm out, 4 nm southwest of the line | no report just now | 6,220 ft | ||||
| OGD Ogden, UT | 318 nm out, 4 nm north of the line, tower | no report just now | 4,472 ft | ||||
| SLC Salt Lake City, UT | 338 nm out, 10 nm east of the line, tower | no report just now | 4,230 ft | ||||
| LAS Las Vegas, NV | destination | no report just now | 2,183 ft |
The highest airport on this list sits at 6,451 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At LAS when you get there the forecast at the estimated arrival, 12:17 am PDT (07:17 UTC)
LAS 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, 626 nm along the route · a VIP movement · starts tomorrow · ZLA
- 6/8808 Las Vegas, NV, Tuesday, October 13, 2026 Local on the route, at the destination end · security · starts tomorrow · ZLA
Daylight
Sunset at BIL 6:33 pm MDT (00:33 UTC), at LAS 6:08 pm PDT (01:08 UTC) (civil twilight ends 6:34 pm PDT (01:34 UTC)). At 120 knots the arrival at LAS is before sunrise there (6:44 am PDT (13:44 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
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: Billings Logan International, Harry Reid International.