Ontario International to Boise Air Trml/Gowen Field ONT → BOI
574 nautical miles (661 statute miles) north on a straight line, true course 006°, about 354° magnetic at the departure end (variation 12E). At 120 knots that is 3 h 27 min at the quickest height in today's winds (34,000 ft, a 46-knot tailwind), arriving about 8:37 am MDT (14:37 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: 635 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 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the first 218 nm of the route.
- AIRMET SIERRA 2E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 69 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 267 to 366 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 287 to 416 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 ONT.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- A333 descending, 0 nm southwest, 4:05 am PDT (11:05 UTC): overcast from 1,500 ft to 7,000 ft, remarks: during the descent runway 26R. At the departure end, 0 nm southwest of the line.
as filed, and in English
ONT UA /OV ONT080/TM 1105/FLUNKN/TP A333/SK OVC015 - TOP070/RM DURD RY26R
- Report
- a routine report filed through ONT
- Where
- ONT080
- Time
- 11:05 UTC
- Height
- height not given
- Aircraft
- A333
- Sky
- overcast from 1,500 ft, tops 7,000 ft
- Remarks
- during the descent runway 26R
- B744 at 1,700 ft, 41 nm west, 2:24 am PDT (09:24 UTC): a few clouds above 1,700 ft, remarks: during the descent runway 25L lax. At the departure end, 41 nm west of the line.
as filed, and in English
LAX UA /OV KLAX/TM 0924/FL017/TP B744/SK FEW017/RM DURD RY25L LAX
- Report
- a routine report filed through LAX
- Where
- over KLAX
- Time
- 09:24 UTC
- Height
- at 1,700 ft
- Aircraft
- B744
- Sky
- a few clouds from 1,700 ft
- Remarks
- during the descent runway 25L lax
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 5 forecast points nearest it (ONT, WJF, BIH, BAM, BOI). 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 | 240° at 5 kt | −3 kt | 2 °C | 123 kt | 4 h 40 min | 9:50 am MDT (15:50 UTC) |
| 6,500 ft | 230° at 5 kt | −4 kt | 2 °C | 124 kt | 4 h 38 min | 9:48 am MDT (15:48 UTC) |
| 8,500 ft | 260° at 6 kt | −2 kt | -1 °C | 122 kt | 4 h 42 min | 9:52 am MDT (15:52 UTC) |
| 10,500 ft | 240° at 9 kt | −5 kt | -4 °C | 125 kt | 4 h 36 min | 9:46 am MDT (15:46 UTC) |
| 12,500 ft | 220° at 13 kt | −11 kt | -8 °C | 131 kt | 4 h 23 min | 9:33 am MDT (15:33 UTC) |
| 14,500 ft | 210° at 22 kt | −20 kt | -12 °C | 140 kt | 4 h 06 min | 9:16 am MDT (15:16 UTC) |
| 16,500 ft | 210° at 32 kt | −30 kt | -15 °C | 150 kt | 3 h 50 min | 9:00 am MDT (15:00 UTC) |
| 18,000 ft FL180 | 200° at 39 kt | −37 kt | -17 °C | 157 kt | 3 h 39 min | 8:49 am MDT (14:49 UTC) |
| 24,000 ft FL240 | 210° at 45 kt | −41 kt | -27 °C | 161 kt | 3 h 34 min | 8:44 am MDT (14:44 UTC) |
| 30,000 ft FL300 | 210° at 51 kt | −45 kt | -30 °C | 165 kt | 3 h 29 min | 8:39 am MDT (14:39 UTC) |
| 34,000 ft FL340 | 220° at 55 kt | −46 kt | -35 °C | 166 kt | 3 h 27 min | 8:37 am MDT (14:37 UTC) |
| 39,000 ft FL390 | 220° at 48 kt | −40 kt | -43 °C | 160 kt | 3 h 35 min | 8:45 am MDT (14:45 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| ONT | used from 0 nm out; 25 nm from the line | 250/11 | 200/20 4° | 210/27 3° | 220/26 -4° | 240/32 -13° | 220/52 -21° | 220/67 -30° | 220/72 -37° | 220/65 -46° |
| WJF | used from 50 nm out; 50 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° | |
| BIH | used from 99 nm out; 91 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° | |
| BAM | used from 297 nm out; 73 nm from the line | 280/9 -2° | 260/18 -8° | 190/47 -19° | 200/50 -29° | 210/56 -29° | 220/54 -34° | 220/45 -42° | ||
| BOI | used from 495 nm out; 54 nm from the line | 320/11 1° | 280/8 -5° | 220/14 -11° | 200/60 -19° | 190/66 -31° | 210/46 -32° | 220/50 -33° | 220/43 -39° |
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 |
|---|---|---|---|---|---|---|---|
| ONT Ontario, CA | departure | no report just now | 944 ft | ||||
| VCV Victorville, CA | 30 nm out, 8 nm east of the line, tower | no report just now | 2,885 ft | ||||
| IYK Inyokern, CA | 99 nm out, 22 nm west of the line | no report just now | 2,457 ft | ||||
| BTY Beatty, NV | 168 nm out, 22 nm east of the line | no report just now | 3,169 ft | ||||
| TPH Tonopah, NV | 238 nm out, 4 nm north of the line | no report just now | 5,430 ft | ||||
| TMT Austin, NV | 327 nm out, 16 nm west of the line | no report just now | 5,735 ft | ||||
| BAM Battle Mountain, NV | 396 nm out, 8 nm west of the line | no report just now | 4,536 ft | ||||
| BOI Boise, ID | destination | no report just now | 2,871 ft |
The highest airport on this list sits at 5,735 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At BOI when you get there the forecast at the estimated arrival, 8:37 am MDT (14:37 UTC)
BOI 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 19 nm from the route, at the departure end · security · ZLA
Daylight
Sunset at ONT 6:18 pm PDT (01:18 UTC), at BOI 7:05 pm MDT (01:05 UTC) (civil twilight ends 7:33 pm MDT (01:33 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: Ontario International, Boise Air Trml/Gowen Field.