Northern Colorado Regional to Ontario International FNL → ONT
713 nautical miles (820 statute miles) southwest on a straight line, true course 241°, about 232° magnetic at the departure end (variation 9E). At 120 knots that is 7 h 30 min at the quickest height in today's winds (8,500 ft, a 25-knot headwind), arriving about 8:31 am PDT (15:31 UTC). Right now FNL is VFR, wind from the south (180°) at 5 knots; ONT is marginal VFR, wind from the west (260°) 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: 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 first 158 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 42,000 ft. Over the first 416 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 515 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 59 to 495 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 79 to 525 nm out.
- AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft. Over the route from 416 to 673 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, 485 nm along the route.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. 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 FNL.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B737 at 18,000 ft, 8 nm north, 1:24 am MDT (07:24 UTC): moderate turbulence, remarks: FL180-130. At the departure end, 8 nm north of the line.
as filed, and in English
DEN UA /OV DEN330050/TM 0724/FL180/TP B737/TB MOD/RM FL180-130
- Report
- a routine report filed through DEN
- Where
- 50 nm northwest (330°) of DEN
- Time
- 07:24 UTC
- Height
- at 18,000 ft
- Aircraft
- B737
- Turbulence
- moderate
- Remarks
- FL180-130
- B737 descending, 42 nm southeast, 1:10 am MDT (07:10 UTC): remarks: smooth. At the departure end, 42 nm southeast of the line.
as filed, and in English
DEN UA /OV DEN/TM 0710/FLDURD/TP B737/RM SMOOTH
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 07:10 UTC
- Height
- during the descent
- Aircraft
- B737
- Remarks
- smooth
- B738 descending, 42 nm southeast, 12:15 am MDT (06:15 UTC): light chop turbulence. At the departure end, 42 nm southeast of the line.
as filed, and in English
DEN UA /OV DEN/TM 0615/FLDURD/TP B738/TB LGT CHOP
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 06:15 UTC
- Height
- during the descent
- Aircraft
- B738
- Turbulence
- light chop
- A20N at 25,000 ft, 29 nm southeast, 12:19 am MDT (06:19 UTC): light chop turbulence up to 26,000 ft, remarks: during the climb ZDVWC-06. 49 nm along the route, 29 nm southeast of the line.
as filed, and in English
DEN UA /OV DEN250045/TM 0619/FL250/TP A20N/TB OCNL LGT CHOP BLO 260/RM DURC. ZDVWC-06
- Report
- a routine report filed through DEN
- Where
- 45 nm west (250°) of DEN
- Time
- 06:19 UTC
- Height
- at 25,000 ft
- Aircraft
- A20N
- Turbulence
- occasional light chop below 26,000 ft
- Remarks
- during the climb ZDVWC-06
- B738 at 23,000 ft, 45 nm southeast, 12:23 am MDT (06:23 UTC): no turbulence from 23,000 ft to 26,000 ft, clear from 23,000 ft to 60,000 ft, remarks: during the descent sskii star ZDVWC-06. 59 nm along the route, 45 nm southeast of the line.
as filed, and in English
DEN UA /OV DEN230060/TM 0623/FL230/TP B738/SK SKC/TB NEG 230-260/RM DURD SSKII STAR. ZDVWC-06
- Report
- a routine report filed through DEN
- Where
- 60 nm southwest (230°) of DEN
- Time
- 06:23 UTC
- Height
- at 23,000 ft
- Aircraft
- B738
- Sky
- clear
- Turbulence
- no from 23,000 ft to 26,000 ft
- Remarks
- during the descent sskii star ZDVWC-06
- E170 at 4,800 ft, 11 nm northwest, 12:31 am MDT (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. 178 nm along the route, 11 nm northwest 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
- PC12 at 12,000 ft, 19 nm northwest, 1:08 am MDT (07:08 UTC): light turbulence, no icing, 4 °C, remarks: instrument conditions ZDVWC-11. 208 nm along the route, 19 nm northwest 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
- A321 at 31,000 ft, 42 nm northwest, 12:15 am MDT (06:15 UTC): light to moderate chop turbulence, remarks: mountain wave zlc. 287 nm along the route, 42 nm northwest 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
- B38M at 14,000 ft, 16 nm northwest, 11:47 pm MDT (05:47 UTC): light rime icing, 6 °C. 505 nm along the route, 16 nm northwest 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
- B737 at 19,000 ft, 27 nm northwest, 11:45 pm MDT (05:45 UTC): light turbulence. 535 nm along the route, 27 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
- B737 at 14,500 ft, 19 nm north, 11:30 pm MDT (05:30 UTC): light turbulence. 554 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
- B38M at 3,000 ft, 5 nm east, 11:47 pm MDT (05:47 UTC): a broken layer from 2,900 ft to 8,000 ft, remarks: BASE030. At the destination 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
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 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 (DEN, GJT, BCE, LAS, 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 |
|---|---|---|---|---|---|---|
| 8,500 ft | 210° at 27 kt | +25 kt | 8 °C | 95 kt | 7 h 30 min | 8:31 am PDT (15:31 UTC) |
| 10,500 ft | 220° at 30 kt | +28 kt | 3 °C | 92 kt | 7 h 45 min | 8:46 am PDT (15:46 UTC) |
| 12,500 ft | 220° at 33 kt | +32 kt | -1 °C | 88 kt | 8 h 06 min | 9:07 am PDT (16:07 UTC) |
| 14,500 ft | 220° at 38 kt | +36 kt | -5 °C | 84 kt | 8 h 29 min | 9:30 am PDT (16:30 UTC) |
| 16,500 ft | 220° at 43 kt | +40 kt | -9 °C | 80 kt | 8 h 55 min | 9:56 am PDT (16:56 UTC) |
| 18,000 ft FL180 | 210° at 47 kt | +43 kt | -12 °C | 77 kt | 9 h 16 min | 10:17 am PDT (17:17 UTC) |
| 24,000 ft FL240 | 220° at 57 kt | +53 kt | -21 °C | 67 kt | 10 h 39 min | 11:40 am PDT (18:40 UTC) |
| 30,000 ft FL300 | 220° at 58 kt | +55 kt | -29 °C | 65 kt | 10 h 58 min | 11:59 am PDT (18:59 UTC) |
| 34,000 ft FL340 | 230° at 59 kt | +58 kt | -34 °C | 62 kt | 11 h 30 min | 12:31 pm PDT (19:31 UTC) |
| 39,000 ft FL390 | 220° at 53 kt | +51 kt | -44 °C | 69 kt | 10 h 20 min | 11:21 am PDT (18:21 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| DEN | used from 0 nm out; 44 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° | ||
| GJT | used from 99 nm out; 58 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° | ||
| BCE | used from 297 nm out; 56 nm from the line | 220/27 -1° | 210/40 -13° | 220/54 -21° | 220/64 -30° | 220/64 -34° | 220/52 -44° | |||
| LAS | used from 445 nm out; 79 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° | |
| ONT | used from 643 nm out; 45 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° |
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 |
|---|---|---|---|---|---|---|---|
| FNL Fort Collins/Loveland, CO | departure | VFR | from the south (180°) at 5 knots | 10+ mi | none | 5,020 ft | 1:56 am MDT (07:56 UTC) |
| GNB Granby, CO | 49 nm out, 3 nm northeast of the line | VFR | calm | 10+ mi | none | 8,207 ft | 07:35 UTC |
| EGE Eagle, CO | 99 nm out, 1 nm west of the line, tower | VFR Sky: a few clouds at 6,500 feet, a broken layer at 8,000 feet, overcast at 11,000 feet | from the south-southwest (200°) at 3 knots | 10+ mi | 8,000 ft | 6,547 ft | 07:56 UTC |
| GJT Grand Junction, CO | 178 nm out, 11 nm northwest of the line, tower | VFR Sky: a few clouds at 6,000 feet, a broken layer at 8,500 feet, overcast at 11,000 feet | from the east-southeast (120°) at 19 knots, gusting to 26 | 10+ mi | 8,500 ft | 4,861 ft | 07:53 UTC |
| CNY Moab, UT | 238 nm out, 22 nm northwest 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 |
| KNB Kanab, UT | 406 nm out, 5 nm northwest of the line | reported, no category | from the west-southwest (240°) at 7 knots | 10+ mi | none | 4,867 ft | 07:55 UTC |
| HND Las Vegas, NV | 544 nm out, 23 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 |
| SBD San Bernardino, CA | 693 nm out, 10 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 |
| ONT Ontario, CA | destination | 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) |
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 ONT when you get there the forecast at the estimated arrival, 8:31 am PDT (15:31 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 marginal VFR
The whole forecast for ONT
- 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
- 6/8890 LAS VEGAS, NV, Tuesday, October 13, 2026 Local 1 nm from the route, 544 nm along the route · a VIP movement · starts tomorrow · ZLA
- 6/8891 Bullhead City, AZ, Wednesday, October 14, 2026 Local 23 nm from the route, 554 nm along the route · a VIP movement · starts Wednesday 14 October · ZLA
- 4/3635 DISNEYLAND THEME PARK, ANAHEIM,, CA 19 nm from the route, at the destination end · security · ZLA
Daylight
Sunset at FNL 6:23 pm MDT (00:23 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: Northern Colorado Regional, Ontario International.