Plan a flight · Mon 8:37 am PDT (15:37 UTC)

Ontario International to Mahlon Sweet Field ONT → EUG

658 nautical miles (757 statute miles) north on a straight line, true course 338°, about 326° magnetic at the departure end (variation 12E). At 120 knots that is 5 h 32 min at the quickest height in today's winds (4,500 ft, a 1-knot headwind), arriving about 2:09 pm PDT (21:09 UTC). Right now ONT is VFR, wind from the southwest (230°) at 5 knots; EUG is VFR, wind from the south (180°) at 5 knots. 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 below 18,000 ft (due to mountain wave) up to 10,000 ft. Over the first 90 nm of the route.
AIRMET SIERRA 2E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 299 nm of the route.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 588 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 ONT.

Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first

urgent A21N at 3,000 ft, 31 nm southwest, 8:00 am PDT (15:00 UTC): remarks: bases 3,000 ft tops 9,000 ft. At the departure end, 31 nm southwest of the line.
as filed, and in English
```
LAX UUA /OV LGB/TM 1500/FL030/TP A21N/RM BASES 030 TOPS 090
```
Report
an urgent report filed through LAX
Where
over LGB
Time
15:00 UTC
Height
at 3,000 ft
Aircraft
A21N
Remarks
bases 3,000 ft tops 9,000 ft
C172 at 5,000 ft, 41 nm south, 8:06 am PDT (15:06 UTC): moderate turbulence. At the departure end, 41 nm south of the line.
as filed, and in English
```
SAN UA /OV 10 NW OCN/TM 1506/FL050/TP C172/TB MOD
```
Report
a routine report filed through SAN
Where
10 northwest ocn
Time
15:06 UTC
Height
at 5,000 ft
Aircraft
C172
Turbulence
moderate
C172 at 5,000 ft, 35 nm south, 8:05 am PDT (15:05 UTC): moderate turbulence. At the departure end, 35 nm south of the line.
as filed, and in English
```
SNA UA /OV DANAH/TM 1505/FL050/TP C172/TB MOD
```
Report
a routine report filed through SNA
Where
danah
Time
15:05 UTC
Height
at 5,000 ft
Aircraft
C172
Turbulence
moderate
B737 at 8,500 ft, 41 nm southwest, 6:58 am PDT (13:58 UTC): moderate turbulence above 8,500 ft. At the departure end, 41 nm southwest of the line.
as filed, and in English
```
LAX UA /OV 8 SW OF LAX/TM 1358/FL085/TP B737/TB MOD TURB 085
```
Report
a routine report filed through LAX
Where
8 southwest of lax
Time
13:58 UTC
Height
at 8,500 ft
Aircraft
B737
Turbulence
moderate turbulence at 8,500 ft
A21N at 8,000 ft, 41 nm southwest, 6:30 am PDT (13:30 UTC): moderate turbulence. At the departure end, 41 nm southwest of the line.
as filed, and in English
```
LAX UA /OV LAX/TM 1330/FL080/TP A21N/TB MODERATE
```
Report
a routine report filed through LAX
Where
over LAX
Time
13:30 UTC
Height
at 8,000 ft
Aircraft
A21N
Turbulence
moderate
B737 at 13,000 ft, 14 nm northeast, 7:00 am PDT (14:00 UTC): moderate turbulence, remarks: dur desct from 13,000 ft to 11,000 ft. At the departure end, 14 nm northeast of the line.
as filed, and in English
```
ONT UA /OV 25N ONT/TM 1400/FL130/TP B737/TB MOD TURB/RM DUR DESCT 130-110
```
Report
a routine report filed through ONT
Where
25N ont
Time
14:00 UTC
Height
at 13,000 ft
Aircraft
B737
Turbulence
moderate turbulence
Remarks
dur desct from 13,000 ft to 11,000 ft
B738 at 31,000 ft, 2 nm southwest, 7:20 am PDT (14:20 UTC): moderate turbulence, remarks: entered by zoa fdcs. 359 nm along the route, 2 nm southwest of the line.
as filed, and in English
```
STS UA /OV SWR320025/TM 1420/FL310/TP B738/TB CONS MOD/RM ENTERED BY ZOA FDCS
```
Report
a routine report filed through STS
Where
25 nm northwest (320°) of SWR
Time
14:20 UTC
Height
at 31,000 ft
Aircraft
B738
Turbulence
continuous moderate
Remarks
entered by zoa fdcs
B737 at 35,000 ft, 41 nm east, 6:05 am PDT (13:05 UTC): moderate clear-air turbulence from 33,000 ft to 35,000 ft, remarks: zse. 469 nm along the route, 41 nm east of the line.
as filed, and in English
```
AAT UA /OV AAT/TM 1305/FL350/TP B737/TB CONS MOD CAT 350-330/RM ZSE
```
Report
a routine report filed through AAT
Where
over AAT
Time
13:05 UTC
Height
at 35,000 ft
Aircraft
B737
Turbulence
continuous moderate clear-air turbulence from 35,000 ft to 33,000 ft
Remarks
zse
RV4 at 1,700 ft, 40 nm west, 8:11 am PDT (15:11 UTC): remarks: rain north and southeast. At the departure end, 40 nm west of the line.
as filed, and in English
```
TOA UA /OV 4SE/TM 1511/FL017/TP RV4/SK BASES 020/WX VIS 24+/RM RA N AND SE
```
Report
a routine report filed through TOA
Where
over 4SE
Time
15:11 UTC
Height
at 1,700 ft
Aircraft
RV4
Sky
bases 2,000 ft
Weather
visibility, 24+
Remarks
rain north and southeast
A321 at 3,000 ft, 31 nm southwest, 7:59 am PDT (14:59 UTC): scattered clouds above 3,000 ft. At the departure end, 31 nm southwest of the line.
as filed, and in English
```
LGB UA /OV KLGB/TM 1459/FL030/TP A321/SK SCT030
```
Report
a routine report filed through LGB
Where
over KLGB
Time
14:59 UTC
Height
at 3,000 ft
Aircraft
A321
Sky
scattered clouds from 3,000 ft
B737 at 8,000 ft, 26 nm southwest, 7:25 am PDT (14:25 UTC): a routine report with nothing remarked on. At the departure end, 26 nm southwest of the line.
as filed, and in English
```
SNA UA /OV SNA/TM 1425/FL080/TP B737/SK BASE 007 TOPS 080
```
Report
a routine report filed through SNA
Where
over SNA
Time
14:25 UTC
Height
at 8,000 ft
Aircraft
B737
Sky
base 700 ft tops 8,000 ft
B737 at 700 ft, 31 nm southwest, 7:20 am PDT (14:20 UTC): scattered clouds from 700 ft to 3,500 ft. At the departure end, 31 nm southwest of the line.
as filed, and in English
```
LGB UA /OV KLGB/TM 1420/FL007/TP B737/SK SCT007-TOP035
```
Report
a routine report filed through LGB
Where
over KLGB
Time
14:20 UTC
Height
at 700 ft
Aircraft
B737
Sky
scattered clouds from 700 ft, tops 3,500 ft
BCS1 at 3,500 ft, 31 nm southwest, 7:18 am PDT (14:18 UTC): a routine report with nothing remarked on. At the departure end, 31 nm southwest of the line.
as filed, and in English
```
LGB UA /OV LGB/TM 1418/FL035/TP BCS1/SK BASE 007 TOPS 035
```
Report
a routine report filed through LGB
Where
over LGB
Time
14:18 UTC
Height
at 3,500 ft
Aircraft
BCS1
Sky
base 700 ft tops 3,500 ft
B737 at 1,200 ft, 26 nm southwest, 7:10 am PDT (14:10 UTC): scattered clouds from 1,200 ft to 8,200 ft. At the departure end, 26 nm southwest of the line.
as filed, and in English
```
SNA UA /OV SNA/TM 1410/FL012/TP B737/SK SCT012-TOP082
```
Report
a routine report filed through SNA
Where
over SNA
Time
14:10 UTC
Height
at 1,200 ft
Aircraft
B737
Sky
scattered clouds from 1,200 ft, tops 8,200 ft

16 more routine reports are on the map.

Winds aloft along the route, and the time en route the forecast for use 14:00–21:00 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 8 forecast points nearest it (ONT, WJF, FAT, BIH, RNO, RBL, SIY, OTH). 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	020° at 2 kt	+1 kt	0 °C	119 kt	5 h 32 min	2:09 pm PDT (21:09 UTC)
6,500 ft	010° at 2 kt	+2 kt	0 °C	118 kt	5 h 35 min	2:12 pm PDT (21:12 UTC)
8,500 ft	340° at 5 kt	+5 kt	-2 °C	115 kt	5 h 43 min	2:20 pm PDT (21:20 UTC)
10,500 ft	330° at 9 kt	+9 kt	-5 °C	111 kt	5 h 56 min	2:33 pm PDT (21:33 UTC)
12,500 ft	330° at 15 kt	+15 kt	-8 °C	105 kt	6 h 16 min	2:53 pm PDT (21:53 UTC)
14,500 ft	340° at 25 kt	+25 kt	-10 °C	95 kt	6 h 56 min	3:33 pm PDT (22:33 UTC)
16,500 ft	340° at 35 kt	+34 kt	-12 °C	86 kt	7 h 39 min	4:16 pm PDT (23:16 UTC)
18,000 ft FL180	340° at 42 kt	+42 kt	-14 °C	78 kt	8 h 26 min	5:03 pm PDT (00:03 UTC)
24,000 ft FL240	340° at 57 kt	+57 kt	-24 °C	63 kt	10 h 27 min	7:04 pm PDT (02:04 UTC)
30,000 ft FL300	330° at 43 kt	+43 kt	-37 °C	77 kt	8 h 33 min	5:10 pm PDT (00:10 UTC)
34,000 ft FL340	310° at 27 kt	+24 kt	-42 °C	96 kt	6 h 51 min	3:28 pm PDT (22:28 UTC)
39,000 ft FL390	280° at 26 kt	+12 kt	-44 °C	108 kt	6 h 06 min	2:43 pm PDT (21:43 UTC)

Based on data from the 12th at 12:00 UTC; valid on the 12th at 18:00 UTC for use 14:00 to 21:00 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	L/V	210/13 3°	220/24 0°	220/31 -3°	230/33 -14°	240/35 -22°	230/55 -31°	230/67 -37°	230/74 -45°
WJF	used from 50 nm out; 28 nm from the line		230/17 3°	230/18 -1°	230/24 -4°	230/33 -13°	300/23 -22°	240/35 -32°	230/53 -38°	230/58 -44°
FAT	used from 100 nm out; 74 nm from the line	L/V	170/5 2°	130/10 -4°	L/V -7°	350/60 -11°	340/62 -23°	320/36 -38°	270/25 -41°	250/32 -44°
BIH	used from 199 nm out; 47 nm from the line		L/V	340/7 -3°	L/V -8°	250/15 -17°	330/30 -24°	270/23 -34°	230/35 -39°	230/39 -44°
RNO	used from 249 nm out; 73 nm from the line		L/V	280/12 -4°	260/15 -10°	340/47 -17°	340/75 -25°	330/47 -37°	280/20 -40°	240/24 -42°
RBL	used from 399 nm out; 62 nm from the line	350/16	350/11 4°	350/10 -2°	350/29 -6°	350/65 -13°	350/72 -25°	350/71 -41°	350/58 -46°	320/31 -45°
SIY	used from 449 nm out; 52 nm from the line		050/11 -1°	020/22 -5°	360/37 -7°	360/69 -13°	350/75 -25°	350/70 -40°	350/58 -46°	330/41 -45°
OTH	used from 598 nm out; 61 nm from the line	020/6	010/13 1°	010/27 -2°	360/42 -2°	360/53 -14°	360/66 -25°	350/81 -40°	360/77 -48°	350/62 -50°

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	VFR Sky: a few clouds at 900 feet, a broken layer at 5,500 feet, overcast at 7,000 feet	from the southwest (230°) at 5 knots	10+ mi	5,500 ft	944 ft	7:53 am PDT (14:53 UTC)
PMD Palmdale, CA	40 nm out, 10 nm west of the line, tower	VFR Sky: a few clouds at 5,000 feet	from the west-southwest (240°) at 10 knots	10+ mi	none	2,542 ft	14:53 UTC
MHV Mojave, CA	70 nm out, 5 nm south of the line, tower	VFR Sky: a few clouds at 2,900 feet, overcast at 3,800 feet	from the southwest (230°) at 9 knots	10+ mi	3,800 ft	2,801 ft	08:15 UTC
PTV Porterville, CA	140 nm out, 22 nm southwest of the line	VFR Sky: overcast at 7,000 feet	calm	10+ mi	7,000 ft	443 ft	14:56 UTC
MMH Mammoth Lakes, CA	219 nm out, 25 nm northeast of the line	VFR Sky: scattered clouds at 3,600 feet, a broken layer at 4,300 feet, overcast at 6,000 feet	from the west (270°) at 10 knots	10+ mi	4,300 ft	7,134 ft	15:15 UTC
TVL South Lake Tahoe, CA	309 nm out, 5 nm northeast of the line	VFR Sky: a broken layer at 6,000 feet, overcast at 7,500 feet	calm	10+ mi	6,000 ft	6,268 ft	14:53 UTC
TRK Truckee, CA	339 nm out, 7 nm east of the line, tower	VFR Sky: scattered clouds at 4,500 feet	calm	10+ mi	none	5,904 ft	14:47 UTC
SVE Susanville, CA	409 nm out, 15 nm east of the line	VFR	calm	10+ mi	none	4,149 ft	15:15 UTC
LMT Klamath Falls, OR	529 nm out, 11 nm east of the line, tower	VFR	from the west-northwest (290°) at 4 knots	10+ mi	none	4,095 ft	14:53 UTC
EUG Eugene, OR	destination	VFR Sky: a few clouds at 8,000 feet Weather: patches of fog	from the south (180°) at 5 knots	10+ mi	none	373 ft	7:54 am PDT (14:54 UTC)

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 EUG when you get there the forecast at the estimated arrival, 2:09 pm PDT (21:09 UTC)

Wind from the north at 6 knots, visibility more than 6 miles, clear skies VFR

The whole forecast for EUG

From Mon 5:00 am PDT (12:00 UTC): wind from the south-southwest at 4 knots, visibility more than 6 miles, clear skies
From Mon 12:00 pm PDT (19:00 UTC): wind from the north at 6 knots, visibility more than 6 miles, clear skies

The forecast for ONT, the departure

From Mon 8:00 am PDT (15:00 UTC): wind light and variable, visibility more than 6 miles, a broken layer at 5,000 feet
At times between Mon 8:00 am PDT (15:00 UTC) and 9:00 am PDT (16:00 UTC): light rain showers, a broken layer at 1,000 feet
From Mon 9:00 am PDT (16:00 UTC): wind from the southwest at 5 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 3,500 feet
From Mon 1:00 pm PDT (20:00 UTC): wind from the west-southwest at 11 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 3,500 feet
From Mon 8:00 pm PDT (03:00 UTC): wind from the west at 8 knots, visibility more than 6 miles, scattered clouds at 3,000 feet, a broken layer at 4,000 feet
From Mon 11:00 pm PDT (06:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 3,000 feet, scattered clouds at 4,000 feet

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
6/7094 45NM NE MERCED, CA, Sunday, October 4, 2026 through Tuesday, October 20, 2026 UTC 1 nm from the route, 239 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 20 October · ZOA

Daylight

Sunset at ONT 6:18 pm PDT (01:18 UTC), at EUG 6:32 pm PDT (01:32 UTC) (civil twilight ends 7:01 pm PDT (02:01 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

Radar now, the Pacific Southwest · loop National Weather Service

Radar now, the Pacific Northwest · loop National Weather Service

Radar, the whole country · loop National Weather Service

Surface analysis now Weather Prediction Center

Forecast chart, 12 hours ahead Weather Prediction Center

Forecast chart, 24 hours ahead Weather Prediction Center

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, Mahlon Sweet Field.