Mahlon Sweet Field to Ontario International EUG → ONT
658 nautical miles (757 statute miles) southeast on a straight line, true course 155°, about 140° magnetic at the departure end (variation 15E). At 120 knots that is 4 h 13 min at the quickest height in today's winds (24,000 ft, a 36-knot tailwind), arriving about 9:29 am PDT (16:29 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: 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 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the route from 10 to 489 nm out.
- AIRMET SIERRA 2E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 299 nm of the route.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the last 50 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 EUG.
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 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 8 forecast points nearest it (OTH, SIY, RBL, RNO, BIH, FAT, WJF, ONT). 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 | 140° at 2 kt | +2 kt | 1 °C | 118 kt | 5 h 35 min | 10:51 am PDT (17:51 UTC) |
| 7,500 ft | light and variable | 0 | 0 °C | 120 kt | 5 h 29 min | 10:45 am PDT (17:45 UTC) |
| 9,500 ft | 290° at 3 kt | −2 kt | -3 °C | 122 kt | 5 h 24 min | 10:40 am PDT (17:40 UTC) |
| 11,500 ft | 290° at 6 kt | −3 kt | -6 °C | 123 kt | 5 h 21 min | 10:37 am PDT (17:37 UTC) |
| 13,500 ft | 310° at 10 kt | −9 kt | -9 °C | 129 kt | 5 h 06 min | 10:22 am PDT (17:22 UTC) |
| 15,500 ft | 330° at 16 kt | −16 kt | -12 °C | 136 kt | 4 h 50 min | 10:06 am PDT (17:06 UTC) |
| 17,500 ft | 330° at 23 kt | −23 kt | -14 °C | 143 kt | 4 h 36 min | 9:52 am PDT (16:52 UTC) |
| 18,000 ft FL180 | 330° at 25 kt | −24 kt | -15 °C | 144 kt | 4 h 34 min | 9:50 am PDT (16:50 UTC) |
| 24,000 ft FL240 | 330° at 37 kt | −36 kt | -24 °C | 156 kt | 4 h 13 min | 9:29 am PDT (16:29 UTC) |
| 30,000 ft FL300 | 320° at 31 kt | −29 kt | -34 °C | 149 kt | 4 h 25 min | 9:41 am PDT (16:41 UTC) |
| 34,000 ft FL340 | 280° at 26 kt | −15 kt | -40 °C | 135 kt | 4 h 52 min | 10:08 am PDT (17:08 UTC) |
| 39,000 ft FL390 | 250° at 27 kt | +1 kt | -43 °C | 119 kt | 5 h 32 min | 10:48 am PDT (17:48 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| OTH | used from 0 nm out; 59 nm from the line | 020/7 | 020/13 1° | 010/26 -4° | 360/41 -4° | 350/60 -13° | 350/65 -24° | 350/72 -40° | 350/68 -48° | 340/43 -47° |
| SIY | used from 50 nm out; 73 nm from the line | 060/14 -1° | 030/21 -4° | 010/29 -8° | 360/75 -13° | 350/77 -24° | 350/74 -39° | 340/57 -45° | 300/20 -42° | |
| RBL | used from 199 nm out; 62 nm from the line | 350/14 | 320/9 4° | 290/7 -3° | 350/22 -7° | 360/75 -13° | 350/79 -24° | 350/74 -39° | 340/49 -43° | 280/23 -43° |
| RNO | used from 249 nm out; 50 nm from the line | 010/6 | 270/12 -3° | 220/26 -10° | 280/13 -19° | 350/44 -24° | 320/30 -32° | 260/22 -36° | 240/24 -42° | |
| BIH | used from 399 nm out; 53 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° | |
| FAT | used from 449 nm out; 34 nm from the line | 140/11 | 180/15 3° | 150/14 -3° | 200/14 -6° | 240/17 -16° | 320/25 -23° | 270/22 -31° | 240/29 -37° | 230/36 -44° |
| WJF | used from 549 nm out; 38 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° | |
| ONT | used from 648 nm out; 5 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° |
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 |
|---|---|---|---|---|---|---|---|
| EUG Eugene, OR | departure | no report just now | 373 ft | ||||
| LMT Klamath Falls, OR | 130 nm out, 11 nm east of the line, tower | no report just now | 4,095 ft | ||||
| SVE Susanville, CA | 249 nm out, 15 nm east of the line | no report just now | 4,149 ft | ||||
| TRK Truckee, CA | 319 nm out, 7 nm east of the line, tower | no report just now | 5,904 ft | ||||
| TVL South Lake Tahoe, CA | 349 nm out, 5 nm northeast of the line | no report just now | 6,268 ft | ||||
| MMH Mammoth Lakes, CA | 439 nm out, 25 nm northeast of the line | no report just now | 7,134 ft | ||||
| PTV Porterville, CA | 519 nm out, 22 nm southwest of the line | no report just now | 443 ft | ||||
| MHV Mojave, CA | 588 nm out, 5 nm south of the line, tower | no report just now | 2,801 ft | ||||
| PMD Palmdale, CA | 618 nm out, 10 nm west of the line, tower | no report just now | 2,542 ft | ||||
| ONT Ontario, CA | destination | no report just now | 944 ft |
The highest airport on this list sits at 7,134 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At ONT when you get there the forecast at the estimated arrival, 9:29 am PDT (16:29 UTC)
ONT has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/7094 45NM NE MERCED, CA, Sunday, October 4, 2026 through Tuesday, October 20, 2026 UTC 1 nm from the route, 419 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 20 October · ZOA
- 6/8783 38NM NE BAKERSFIELD, CA, Saturday, October 10, 2026 through Friday, October 23, 2026 UTC 2 nm from the route, 549 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 23 October · ZLA
- 4/3635 DISNEYLAND THEME PARK, ANAHEIM,, CA 19 nm from the route, at the destination end · security · ZLA
Daylight
Sunset at EUG 6:32 pm PDT (01:32 UTC), at ONT 6:18 pm PDT (01:18 UTC) (civil twilight ends 6:44 pm PDT (01:44 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: Mahlon Sweet Field, Ontario International.