Plan a flight · Sun 11:01 pm PDT (06:01 UTC)

Ontario International to Northern Colorado Regional ONT → FNL

713 nautical miles (820 statute miles) northeast on a straight line, true course 054°, about 042° magnetic at the departure end (variation 12E). At 120 knots that is 4 h at the quickest height in today's winds (34,000 ft, a 58-knot tailwind), arriving about 4:01 am MDT (10:01 UTC), after sunset at the destination. Right now ONT is marginal VFR, wind variable at 4 knots; FNL is VFR, wind from the south-southeast (150°) at 3 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 first 158 nm of the route.
AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft. Near the route, 89 nm along the route.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 168 to 416 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 535 nm of the route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 208 to 584 nm out.
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, 228 nm along the route.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the last 386 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 route from 525 to 693 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

urgent E75L at 9,000 ft, 23 nm southeast, 9:30 pm PDT (04:30 UTC): remarks: low-level wind shear + 20K 1000-1500 above ground on approach. 604 nm along the route, 23 nm southeast of the line.
as filed, and in English
```
ASE UUA /OV ASE/TM 0430/FL090/TP E75L/RM LLWS +/- 20K 1000-1500 AGL ON APCH
```
Report
an urgent report filed through ASE
Where
over ASE
Time
04:30 UTC
Height
at 9,000 ft
Aircraft
E75L
Remarks
low-level wind shear + 20K 1000-1500 above ground on approach
B737 at 13,000 ft, 45 nm southwest, 8:30 pm PDT (03:30 UTC): moderate turbulence. At the departure end, 45 nm southwest of the line.
as filed, and in English
```
SLI UA /OV SLI180020/TM 0330/FL130/TP B737/TB MOD
```
Report
a routine report filed through SLI
Where
20 nm south (180°) of SLI
Time
03:30 UTC
Height
at 13,000 ft
Aircraft
B737
Turbulence
moderate
E75L climbing, 32 nm southeast, 8:22 pm PDT (03:22 UTC): moderate chop turbulence. 49 nm along the route, 32 nm southeast of the line.
as filed, and in English
```
PSP UA /OV PSP345013/TM 0322/FLDURC/TP E75L/TB MOD CHOP/LT TURBU SFC-60
```
Report
a routine report filed through PSP
Where
13 nm north (345°) of PSP
Time
03:22 UTC
Height
during the climb
Aircraft
E75L
Turbulence
moderate chop/lt turbu SFC-60
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
GLF5 at 3,500 ft, 45 nm west, 9:54 pm PDT (04:54 UTC): overcast above 3,600 ft. At the departure end, 45 nm west of the line.
as filed, and in English
```
VNY UA /OV VNY36006/TM 0454/FL035/TP GLF5/SK OVC036
```
Report
a routine report filed through VNY
Where
VNY36006
Time
04:54 UTC
Height
at 3,500 ft
Aircraft
GLF5
Sky
overcast from 3,600 ft
E75L at 3,600 ft, 33 nm west, 8:30 pm PDT (03:30 UTC): overcast above 6,600 ft, remarks: bases 3,600 ft. At the departure end, 33 nm west of the line.
as filed, and in English
```
KLAX UA /OV 10 E LAX/TM 0330/FL036/TP E75L/SK OVC066/RM BASES 036
```
Report
a routine report filed through KLAX
Where
10 east lax
Time
03:30 UTC
Height
at 3,600 ft
Aircraft
E75L
Sky
overcast from 6,600 ft
Remarks
bases 3,600 ft
B737 at 3,500 ft, 31 nm southwest, 8:25 pm PDT (03:25 UTC): a broken layer above 3,500 ft. At the departure end, 31 nm southwest of the line.
as filed, and in English
```
LGB UA /OV LGB/TM 0325/FL035/TP B737/SK BKN035
```
Report
a routine report filed through LGB
Where
over LGB
Time
03:25 UTC
Height
at 3,500 ft
Aircraft
B737
Sky
a broken layer from 3,500 ft
A20N climbing, 7 nm south, 8:04 pm PDT (03:04 UTC): a routine report with nothing remarked on. At the departure end, 7 nm south of the line.
as filed, and in English
```
ONT UA /OV ONT153007/TM 0304/FLDURC/TP A20N/SK B-036 -T047
```
Report
a routine report filed through ONT
Where
7 nm southeast (153°) of ONT
Time
03:04 UTC
Height
during the climb
Aircraft
A20N
Sky
B-036 T047
A20N climbing, 3 nm southwest, 8:03 pm PDT (03:03 UTC): a routine report with nothing remarked on. At the departure end, 3 nm southwest of the line.
as filed, and in English
```
ONT UA /OV ONT204003/TM 0303/FLDURC/TP A20N/SK B-030
```
Report
a routine report filed through ONT
Where
3 nm southwest (204°) of ONT
Time
03:03 UTC
Height
during the climb
Aircraft
A20N
Sky
B-030
B737 climbing, 16 nm west, 8:01 pm PDT (03:01 UTC): a routine report with nothing remarked on. At the departure end, 16 nm west of the line.
as filed, and in English
```
ONT UA /OV ONT278016/TM 0301/FLDURC/TP B737/SK B-047 -T080
```
Report
a routine report filed through ONT
Where
16 nm west (278°) of ONT
Time
03:01 UTC
Height
during the climb
Aircraft
B737
Sky
B-047 T080
A321 at 3,300 ft, 6 nm south, 9:59 pm PDT (04:59 UTC): a broken layer above 3,300 ft, remarks: during the descent. At the departure end, 6 nm south of the line.
as filed, and in English
```
ONT UA /OV ONT078008/TM 0459/FL033/TP A321/SK BKN033-TOPUNKN/RM DURD
```
Report
a routine report filed through ONT
Where
8 nm east (078°) of ONT
Time
04:59 UTC
Height
at 3,300 ft
Aircraft
A321
Sky
a broken layer from 3,300 ft, tops unknown
Remarks
during the descent
B38M at 4,500 ft, 7 nm southeast, 9:15 pm PDT (04:15 UTC): a broken layer above 4,500 ft, remarks: during the descent. At the departure end, 7 nm southeast of the line.
as filed, and in English
```
ONT UA /OV ONT078012/TM 0415/FL045/TP B38M/SK BKN045-TOPUNKN/RM DURD
```
Report
a routine report filed through ONT
Where
12 nm east (078°) of ONT
Time
04:15 UTC
Height
at 4,500 ft
Aircraft
B38M
Sky
a broken layer from 4,500 ft, tops unknown
Remarks
during the descent
B737 at 16,000 ft, 25 nm northwest, 8:45 pm PDT (03:45 UTC): light rime icing, -9 °C. 119 nm along the route, 25 nm northwest of the line.
as filed, and in English
```
LAS UA /OV LAS215045/TM 0345/FL160/TP B737/TA M09/IC LGT RIME
```
Report
a routine report filed through LAS
Where
45 nm southwest (215°) of LAS
Time
03:45 UTC
Height
at 16,000 ft
Aircraft
B737
Temperature
−9 °C
Icing
light rime
B737 at 14,500 ft, 19 nm north, 10:30 pm PDT (05:30 UTC): light turbulence. 158 nm along the route, 19 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

7 more routine reports are on the map.

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 5 forecast points nearest it (ONT, LAS, BCE, GJT, DEN). 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 29 kt	−25 kt	8 °C	145 kt	4 h 55 min	4:56 am MDT (10:56 UTC)
9,500 ft	210° at 29 kt	−27 kt	6 °C	147 kt	4 h 51 min	4:52 am MDT (10:52 UTC)
11,500 ft	220° at 31 kt	−30 kt	0 °C	150 kt	4 h 45 min	4:46 am MDT (10:46 UTC)
13,500 ft	220° at 35 kt	−34 kt	-3 °C	154 kt	4 h 38 min	4:39 am MDT (10:39 UTC)
15,500 ft	220° at 40 kt	−38 kt	-7 °C	158 kt	4 h 31 min	4:32 am MDT (10:32 UTC)
17,500 ft	210° at 45 kt	−42 kt	-11 °C	162 kt	4 h 24 min	4:25 am MDT (10:25 UTC)
18,000 ft FL180	210° at 46 kt	−42 kt	-12 °C	162 kt	4 h 24 min	4:25 am MDT (10:25 UTC)
24,000 ft FL240	220° at 57 kt	−53 kt	-21 °C	173 kt	4 h 07 min	4:08 am MDT (10:08 UTC)
30,000 ft FL300	220° at 58 kt	−56 kt	-29 °C	176 kt	4 h 03 min	4:04 am MDT (10:04 UTC)
34,000 ft FL340	220° at 59 kt	−58 kt	-34 °C	178 kt	4 h	4:01 am MDT (10:01 UTC)
39,000 ft FL390	220° at 53 kt	−51 kt	-44 °C	171 kt	4 h 10 min	4:11 am MDT (10:11 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 99 nm out; 53 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 247 nm out; 76 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 445 nm out; 63 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°
DEN	used from 643 nm out; 56 nm from the line			240/21 14°	250/44 6°	220/49 -8°	220/49 -21°	230/54 -30°	240/57 -35°	240/49 -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: a broken layer at 2,900 feet, a broken layer at 4,000 feet, overcast at 5,000 feet Weather: light rain, mist	variable at 4 knots	6 mi	2,900 ft	944 ft	10:53 pm PDT (05:53 UTC)
SBD San Bernardino, CA	20 nm out, 10 nm south of the line, tower	VFR Sky: overcast at 3,200 feet Weather: light rain	from the south-southeast (150°) at 3 knots	10+ mi	3,200 ft	1,159 ft	05:40 UTC
HND Las Vegas, NV	168 nm out, 23 nm northwest of the line, tower	VFR Sky: overcast at 10,000 feet	from the south (180°) at 12 knots	10+ mi	10,000 ft	2,491 ft	05:56 UTC
KNB Kanab, UT	307 nm out, 5 nm northwest of the line	reported, no category	from the south-southeast (160°) at 0 knots	10+ mi	none	4,867 ft	05:55 UTC
CNY Moab, UT	475 nm out, 22 nm northwest of the line	VFR Sky: a few clouds at 9,500 feet, a few clouds at 12,000 feet	from the south-southwest (200°) at 12 knots	10+ mi	none	4,579 ft	05:53 UTC
GJT Grand Junction, CO	535 nm out, 11 nm northwest of the line, tower	VFR Sky: a few clouds at 6,000 feet, overcast at 10,000 feet	variable at 4 knots	10+ mi	10,000 ft	4,861 ft	05:53 UTC
EGE Eagle, CO	614 nm out, 1 nm west of the line, tower	VFR Sky: scattered clouds at 9,000 feet, overcast at 11,000 feet	from the west-northwest (290°) at 6 knots	10+ mi	11,000 ft	6,547 ft	05:56 UTC
GNB Granby, CO	663 nm out, 3 nm northeast of the line	VFR Sky: scattered clouds at 4,600 feet, a broken layer at 8,000 feet	calm	10+ mi	8,000 ft	8,207 ft	05:35 UTC
FNL Fort Collins/Loveland, CO	destination	VFR	from the south-southeast (150°) at 3 knots	10+ mi	none	5,020 ft	11:56 pm MDT (05:56 UTC)

The highest airport on this list sits at 8,207 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At FNL when you get there the forecast at the estimated arrival, 4:01 am MDT (10:01 UTC)

FNL has no terminal forecast; use the nearest airport that does.

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
6/8891 Bullhead City, AZ, Wednesday, October 14, 2026 Local 23 nm from the route, 158 nm along the route · a VIP movement · starts Wednesday 14 October · ZLA
6/8890 LAS VEGAS, NV, Tuesday, October 13, 2026 Local 1 nm from the route, 168 nm along the route · a VIP movement · starts tomorrow · ZLA

Daylight

Sunset at ONT 6:20 pm PDT (01:20 UTC), at FNL 6:23 pm MDT (00:23 UTC) (civil twilight ends 6:50 pm MDT (00:50 UTC)). At 120 knots the arrival at FNL is before sunrise there (7:07 am MDT (13:07 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, Northern Colorado Regional.