Billings Logan International to Los Angeles International BIL → LAX
844 nautical miles (971 statute miles) southwest on a straight line, true course 216°, about 206° magnetic at the departure end (variation 10E). At 120 knots that is 7 h 45 min at the quickest height in today's winds (4,500 ft, a 11-knot headwind), arriving about 12:13 pm PDT (19:13 UTC). 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: 3 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 W21W: thunderstorms (a convective SIGMET) up to 27,000 ft, moving from the southwest at 20 knots, until 6:55 am MDT (12:55 UTC). Over the route from 328 to 357 nm out.
as issued
WSUS33 KKCI 121055 MKCW WST 121055 CONVECTIVE SIGMET 21W VALID UNTIL 1255Z UT ID NV FROM 40ENE TWF-20SSE PIH-40E BVL-20WNW BVL-40ENE TWF AREA TS MOV FROM 24020KT. TOPS TO FL270.
- 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 139 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 18,000 ft. Over the first 0 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 516 nm of the route.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 387 to 804 nm out.
- AIRMET SIERRA 2E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 89 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 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 08:00–15:00 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 7 forecast points nearest it (BIL, LND, PIH, SLC, ELY, LAS, WJF). 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 | 210° at 11 kt | +11 kt | 6 °C | 109 kt | 7 h 45 min | 12:13 pm PDT (19:13 UTC) |
| 6,500 ft | 210° at 12 kt | +12 kt | 5 °C | 108 kt | 7 h 49 min | 12:17 pm PDT (19:17 UTC) |
| 8,500 ft | 210° at 21 kt | +21 kt | 2 °C | 99 kt | 8 h 32 min | 1:00 pm PDT (20:00 UTC) |
| 10,500 ft | 210° at 26 kt | +26 kt | -1 °C | 94 kt | 8 h 59 min | 1:27 pm PDT (20:27 UTC) |
| 12,500 ft | 220° at 30 kt | +30 kt | -4 °C | 90 kt | 9 h 23 min | 1:51 pm PDT (20:51 UTC) |
| 14,500 ft | 220° at 33 kt | +33 kt | -8 °C | 87 kt | 9 h 42 min | 2:10 pm PDT (21:10 UTC) |
| 16,500 ft | 220° at 36 kt | +35 kt | -12 °C | 85 kt | 9 h 56 min | 2:24 pm PDT (21:24 UTC) |
| 18,000 ft FL180 | 220° at 38 kt | +37 kt | -15 °C | 83 kt | 10 h 10 min | 2:38 pm PDT (21:38 UTC) |
| 24,000 ft FL240 | 210° at 51 kt | +51 kt | -24 °C | 69 kt | 12 h 14 min | 4:42 pm PDT (23:42 UTC) |
| 30,000 ft FL300 | 220° at 64 kt | +63 kt | -31 °C | 57 kt | 14 h 48 min | 7:16 pm PDT (02:16 UTC) |
| 34,000 ft FL340 | 220° at 62 kt | +62 kt | -37 °C | 58 kt | 14 h 33 min | 7:01 pm PDT (02:01 UTC) |
| 39,000 ft FL390 | 220° at 58 kt | +58 kt | -44 °C | 62 kt | 13 h 37 min | 6:05 pm PDT (01:05 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BIL | used from 0 nm out; 25 nm from the line | 300/14 | 270/19 -2° | 260/26 -2° | 220/28 -13° | 210/51 -25° | 220/56 -33° | 220/61 -39° | 220/72 -45° | |
| LND | used from 99 nm out; 102 nm from the line | 240/10 3° | 240/30 0° | 220/42 -13° | 230/52 -23° | 220/54 -33° | 220/52 -36° | 220/53 -44° | ||
| PIH | used from 149 nm out; 82 nm from the line | 070/8 | 150/19 1° | 180/32 -4° | 210/44 -17° | 210/37 -28° | 210/74 -31° | 220/68 -35° | 220/60 -43° | |
| SLC | used from 298 nm out; 49 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° | |
| ELY | used from 397 nm out; 60 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° | ||
| LAS | used from 595 nm out; 80 nm from the line | 210/20 8° | 210/29 4° | 200/32 -3° | 200/51 -15° | 210/64 -21° | 220/70 -30° | 220/66 -38° | 220/55 -44° | |
| WJF | used from 695 nm out; 79 nm from the line | 210/26 4° | 210/28 2° | 230/23 -4° | 240/28 -13° | 220/47 -23° | 220/57 -30° | 220/65 -37° | 220/59 -45° |
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, 3 nm north of the line | no report just now | 5,762 ft | ||||
| JAC Jackson, WY | 159 nm out, 3 nm southwest of the line, tower | no report just now | 6,451 ft | ||||
| AFO Afton, WY | 208 nm out, 22 nm southeast of the line | no report just now | 6,220 ft | ||||
| MLD Malad City, ID | 268 nm out, 10 nm west of the line | no report just now | 4,503 ft | ||||
| ELY Ely, NV | 476 nm out, 16 nm west of the line | no report just now | 6,259 ft | ||||
| BTY Beatty, NV | 655 nm out, 19 nm northwest of the line | no report just now | 3,169 ft | ||||
| PMD Palmdale, CA | 804 nm out, 8 nm northwest of the line, tower | no report just now | 2,542 ft | ||||
| LAX Los Angeles, CA | destination | no report just now | 127 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 LAX when you get there the forecast at the estimated arrival, 12:13 pm PDT (19:13 UTC)
LAX has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 4/3635 DISNEYLAND THEME PARK, ANAHEIM,, CA 23 nm from the route, at the destination end · security · ZLA
Daylight
Sunset at BIL 6:32 pm MDT (00:32 UTC), at LAX 6:22 pm PDT (01:22 UTC) (civil twilight ends 6:47 pm PDT (01:47 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, Los Angeles International.