Plan a flight · Mon 1:01 am PDT (08:01 UTC)

Ontario International to Yampa Valley Airport ONT → HDN

628 nautical miles (722 statute miles) northeast on a straight line, true course 049°, about 037° magnetic at the departure end (variation 12E). At 120 knots that is 3 h 31 min at the quickest height in today's winds (34,000 ft, a 59-knot tailwind), arriving about 5:32 am MDT (11:32 UTC), after sunset at the destination. Right now ONT is marginal VFR, wind from the west (260°) at 8 knots; HDN is VFR, wind from the southwest (230°) at 8 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 15,000 ft. Over the route from 20 to 179 nm out.
AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft. Over the route from 50 to 299 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 478 nm of the route.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 438 nm of the route.
AIRMET SIERRA 2E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Near the route, 229 nm along the route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 389 nm of the route.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 42,000 ft. Over the last 319 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 last 60 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

B38M at 3,000 ft, 5 nm east, 10:47 pm PDT (05:47 UTC): a broken layer from 2,900 ft to 8,000 ft, remarks: BASE030. At the departure end, 5 nm east of the line.
as filed, and in English
```
ONT UA /OV KONT080005/TM 0547/FL030/TP B38M/SK BKN029-TOP080/RM BASE030
```
Report
a routine report filed through ONT
Where
5 nm east (080°) of KONT
Time
05:47 UTC
Height
at 3,000 ft
Aircraft
B38M
Sky
a broken layer from 2,900 ft, tops 8,000 ft
Remarks
BASE030
B737 at 14,500 ft, 7 nm north, 10:30 pm PDT (05:30 UTC): light turbulence. 159 nm along the route, 7 nm north of the line.
as filed, and in English
```
LAS UA /OV LAS155012/TM 0530/FL145/TP B737/TB LGT
```
Report
a routine report filed through LAS
Where
12 nm southeast (155°) of LAS
Time
05:30 UTC
Height
at 14,500 ft
Aircraft
B737
Turbulence
light
B737 at 19,000 ft, 12 nm northwest, 10:45 pm PDT (05:45 UTC): light turbulence. 179 nm along the route, 12 nm northwest of the line.
as filed, and in English
```
LAS UA /OV LAS050012/TM 0545/FL190/TP B737/TB LGT
```
Report
a routine report filed through LAS
Where
12 nm northeast (050°) of LAS
Time
05:45 UTC
Height
at 19,000 ft
Aircraft
B737
Turbulence
light
B38M at 14,000 ft, 3 nm southwest, 10:47 pm PDT (05:47 UTC): light rime icing, 6 °C. 209 nm along the route, 3 nm southwest of the line.
as filed, and in English
```
LAS UA /OV LAS059040/TM 0547/FL140/TP B38M/TA 06/IC LGT RIME
```
Report
a routine report filed through LAS
Where
40 nm northeast (059°) of LAS
Time
05:47 UTC
Height
at 14,000 ft
Aircraft
B38M
Temperature
6 °C
Icing
light rime
A321 at 31,000 ft, 7 nm north, 11:15 pm PDT (06:15 UTC): light to moderate chop turbulence, remarks: mountain wave zlc. 428 nm along the route, 7 nm north of the line.
as filed, and in English
```
CNY UA /OV HVE340015/TM 0615/FL310/TP A321/TB OCNL LGT-MOD CHOP /RM MTN WAVE /ZLC
```
Report
a routine report filed through CNY
Where
15 nm north (340°) of HVE
Time
06:15 UTC
Height
at 31,000 ft
Aircraft
A321
Turbulence
occasional light to moderate chop
Remarks
mountain wave zlc
PC12 at 12,000 ft, 22 nm southeast, 12:08 am PDT (07:08 UTC): light turbulence, no icing, 4 °C, remarks: instrument conditions ZDVWC-11. 498 nm along the route, 22 nm southeast of the line.
as filed, and in English
```
GJT UA /OV JNC237019/TM 0708/FL120/TP PC12/TA 04/TB OCNL LGT/IC NEG/RM IMC. ZDVWC-11
```
Report
a routine report filed through GJT
Where
19 nm southwest (237°) of JNC
Time
07:08 UTC
Height
at 12,000 ft
Aircraft
PC12
Temperature
4 °C
Turbulence
occasional light
Icing
none
Remarks
instrument conditions ZDVWC-11
E170 at 4,800 ft, 32 nm southeast, 11:31 pm PDT (06:31 UTC): no turbulence, no icing, clear from 4,800 ft to 60,000 ft, remarks: during the descent rnav Y 11 lgjt zdvwc. 528 nm along the route, 32 nm southeast of the line.
as filed, and in English
```
GJT UA /OV GJT/TM 0631/FL048/TP E170/SK SKC/TB NEG/IC NEG/RM DURD RNAV Y 11 LGJT. ZDVWC
```
Report
a routine report filed through GJT
Where
over GJT
Time
06:31 UTC
Height
at 4,800 ft
Aircraft
E170
Sky
clear
Turbulence
none
Icing
none
Remarks
during the descent rnav Y 11 lgjt zdvwc

Winds aloft along the route, and the time en route the forecast for use 02:00–09:00 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 4 forecast points nearest it (ONT, LAS, BCE, GJT). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
7,500 ft	210° at 30 kt	−27 kt	7 °C	147 kt	4 h 16 min	6:17 am MDT (12:17 UTC)
9,500 ft	210° at 30 kt	−28 kt	5 °C	148 kt	4 h 15 min	6:16 am MDT (12:16 UTC)
11,500 ft	220° at 30 kt	−30 kt	0 °C	150 kt	4 h 11 min	6:12 am MDT (12:12 UTC)
13,500 ft	220° at 35 kt	−34 kt	-4 °C	154 kt	4 h 05 min	6:06 am MDT (12:06 UTC)
15,500 ft	220° at 39 kt	−38 kt	-8 °C	158 kt	3 h 58 min	5:59 am MDT (11:59 UTC)
17,500 ft	210° at 44 kt	−42 kt	-12 °C	162 kt	3 h 53 min	5:54 am MDT (11:54 UTC)
18,000 ft FL180	210° at 46 kt	−43 kt	-13 °C	163 kt	3 h 51 min	5:52 am MDT (11:52 UTC)
24,000 ft FL240	220° at 57 kt	−55 kt	-21 °C	175 kt	3 h 35 min	5:36 am MDT (11:36 UTC)
30,000 ft FL300	220° at 58 kt	−57 kt	-29 °C	177 kt	3 h 33 min	5:34 am MDT (11:34 UTC)
34,000 ft FL340	220° at 60 kt	−59 kt	-34 °C	179 kt	3 h 31 min	5:32 am MDT (11:32 UTC)
39,000 ft FL390	220° at 54 kt	−52 kt	-44 °C	172 kt	3 h 39 min	5:40 am MDT (11:40 UTC)

Based on data from the 12th at 00:00 UTC; valid on the 12th at 06:00 UTC for use 02:00 to 09:00 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	190/8	190/19 6°	210/23 4°	210/29 -3°	210/47 -13°	210/49 -19°	220/47 -30°	220/50 -36°	220/55 -43°
LAS	used from 100 nm out; 48 nm from the line		210/21 10°	200/18 5°	200/23 -2°	210/49 -14°	210/63 -21°	220/58 -30°	220/61 -35°	210/56 -44°
BCE	used from 249 nm out; 70 nm from the line				220/27 -1°	210/40 -13°	220/54 -21°	220/64 -30°	220/64 -34°	220/52 -44°
GJT	used from 448 nm out; 66 nm from the line			210/43 7°	230/45 1°	220/49 -12°	220/62 -22°	220/59 -28°	230/60 -33°	220/55 -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
ONT Ontario, CA	departure	marginal VFR Sky: scattered clouds at 900 feet, a broken layer at 1,500 feet, overcast at 3,500 feet Weather: light rain, mist	from the west (260°) at 8 knots	5 mi	1,500 ft	944 ft	12:53 am PDT (07:53 UTC)
SBD San Bernardino, CA	20 nm out, 11 nm south of the line, tower	VFR Sky: scattered clouds at 2,200 feet, scattered clouds at 3,600 feet, overcast at 4,900 feet	from the east-southeast (120°) at 5 knots	10+ mi	4,900 ft	1,159 ft	08:00 UTC
HND Las Vegas, NV	169 nm out, 10 nm northwest of the line, tower	VFR Sky: a broken layer at 11,000 feet	from the south (170°) at 10 knots	10+ mi	11,000 ft	2,491 ft	07:56 UTC
AZC Colorado City, AZ	279 nm out, 10 nm east of the line	VFR Sky: a broken layer at 10,000 feet	from the southeast (140°) at 10 knots	10+ mi	10,000 ft	4,873 ft	07:55 UTC
BCE Bryce Canyon, UT	349 nm out, 5 nm southwest of the line	IFR Sky: a few clouds at 400 feet, scattered clouds at 2,100 feet, overcast at 2,700 feet Weather: mist	from the south-southeast (150°) at 3 knots	2.5 mi	2,700 ft	7,589 ft	07:53 UTC
HVE Hanksville, UT	428 nm out, 7 nm south of the line	VFR Sky: a broken layer at 5,000 feet, overcast at 5,500 feet	from the south-southwest (200°) at 8 knots	10+ mi	5,000 ft	4,453 ft	07:30 UTC
CNY Moab, UT	468 nm out, 17 nm southeast of the line	VFR Sky: a broken layer at 10,000 feet	from the south (190°) at 13 knots	10+ mi	10,000 ft	4,579 ft	07:53 UTC
EEO Meeker, CO	588 nm out, 4 nm southeast of the line	VFR Sky: a few clouds at 7,000 feet, scattered clouds at 9,500 feet, a broken layer at 11,000 feet	variable at 5 knots	10+ mi	11,000 ft	6,415 ft	07:53 UTC
HDN Hayden, CO	destination	VFR Sky: scattered clouds at 11,000 feet	from the southwest (230°) at 8 knots	10+ mi	none	6,606 ft	1:56 am MDT (07:56 UTC)

The highest airport on this list sits at 7,589 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At HDN when you get there the forecast at the estimated arrival, 5:32 am MDT (11:32 UTC)

Wind from the south at 13 knots, gusting to 28, visibility more than 6 miles, low-level wind shear, a few clouds at 8,000 feet, a broken layer at 10,000 feet VFR

The whole forecast for HDN

From Mon 12:00 am MDT (06:00 UTC): wind from the south at 13 knots, gusting to 28, visibility more than 6 miles, low-level wind shear, a few clouds at 8,000 feet, a broken layer at 10,000 feet
From Mon 7:00 am MDT (13:00 UTC): wind from the south at 9 knots, visibility more than 6 miles, scattered clouds at 4,000 feet, a broken layer at 5,000 feet
From Mon 12:00 pm MDT (18:00 UTC): wind from the west-southwest at 13 knots, gusting to 23, visibility more than 6 miles, scattered clouds at 3,500 feet, a broken layer at 5,000 feet
30% chance between Mon 12:00 pm MDT (18:00 UTC) and 6:00 pm MDT (00:00 UTC): visibility 4 miles, light rain showers, overcast at 2,600 feet
From Mon 6:00 pm MDT (00:00 UTC): wind from the north-northeast at 6 knots, visibility more than 6 miles, a few clouds at 6,000 feet, scattered clouds at 11,000 feet
30% chance between Mon 10:00 pm MDT (04:00 UTC) and 12:00 am MDT (06:00 UTC): visibility 4 miles, light rain showers, a broken layer at 5,000 feet

The forecast for ONT, the departure

From Sun 11:00 pm PDT (06:00 UTC): wind from the west-southwest at 6 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 5,000 feet
From Mon 2:00 am PDT (09:00 UTC): wind from the west-southwest at 4 knots, visibility more than 6 miles, showers nearby, a broken layer at 2,500 feet, a broken layer at 5,000 feet
From Mon 11:00 am PDT (18:00 UTC): wind from the west-southwest at 5 knots, visibility more than 6 miles, a broken layer at 5,000 feet
From Mon 2:00 pm PDT (21:00 UTC): wind from the west-southwest at 11 knots, gusting to 18, visibility more than 6 miles, a broken layer at 5,000 feet
From Mon 8:00 pm PDT (03:00 UTC): wind from the west-southwest at 9 knots, visibility more than 6 miles, a broken layer at 6,000 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
6/8890 LAS VEGAS, NV, Tuesday, October 13, 2026 Local on the route, 149 nm along the route · a VIP movement · starts tomorrow · ZLA
6/8891 Bullhead City, AZ, Wednesday, October 14, 2026 Local 16 nm from the route, 159 nm along the route · a VIP movement · starts Wednesday 14 October · ZLA
6/8808 Las Vegas, NV, Tuesday, October 13, 2026 Local 13 nm from the route, 169 nm along the route · security · starts tomorrow · ZLA

Daylight

Sunset at ONT 6:18 pm PDT (01:18 UTC), at HDN 6:32 pm MDT (00:32 UTC) (civil twilight ends 6:59 pm MDT (00:59 UTC)). At 120 knots the arrival at HDN is before sunrise there (7:16 am MDT (13:16 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 southern Rockies · 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, Yampa Valley Airport.