Ontario International to City Of Colorado Springs Municipal ONT → COS
684 nautical miles (788 statute miles) northeast on a straight line, true course 062°, about 050° magnetic at the departure end (variation 12E). At 120 knots that is 3 h 38 min at the quickest height in today's winds (34,000 ft, a 68-knot tailwind), arriving about 5:17 am MDT (11:17 UTC), after sunset at the destination. Right now ONT is marginal VFR, wind from the north (350°) at 3 knots; COS is VFR, wind from the west-southwest (240°) at 7 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: 3 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
- SIGMET C12C: thunderstorms (a convective SIGMET) up to 25,000 ft, moving from the southwest at 40 knots, until 1:55 am PDT (08:55 UTC). Near the route, 645 nm along the route.
as issued
WSUS32 KKCI 120655 MKCC WST 120655 CONVECTIVE SIGMET 12C VALID UNTIL 0855Z CO NM FROM 40W PUB-30SSE PUB-30W CIM-50WSW ALS-40W PUB DMSHG AREA TS MOV FROM 22040KT. TOPS TO FL250.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft, from 11:00 pm PDT (06:00 UTC). Over the first 139 nm of the route.
- AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft, from 11:00 pm PDT (06:00 UTC). Over the route from 179 to 427 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist), from 11:00 pm PDT (06:00 UTC). Over the route from 179 to 506 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft, from 11:00 pm PDT (06:00 UTC). Over the last 496 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), from 11:00 pm PDT (06:00 UTC). Over the route from 238 to 317 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft, from 11:00 pm PDT (06:00 UTC). Near the route, 268 nm along the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft, from 11:00 pm PDT (06:00 UTC). Over the last 278 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), from 11:00 pm PDT (06:00 UTC). Over the last 149 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
- A321 at 31,000 ft, 9 nm north, 11:41 pm PDT (06:41 UTC): moderate turbulence, remarks: mtw +/-15KT zdvwc. At the destination end, 9 nm north of the line.
as filed, and in English
COS UA /OV BRK/TM 0641/FL310/TP A321/TB MOD/RM MTW +/-15KT. ZDVWC
- Report
- a routine report filed through COS
- Where
- over BRK
- Time
- 06:41 UTC
- Height
- at 31,000 ft
- Aircraft
- A321
- Turbulence
- moderate
- Remarks
- mtw +/-15KT zdvwc
- 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
- A321 at 3,300 ft, 5 nm south, 9:59 pm PDT (04:59 UTC): a broken layer above 3,300 ft, remarks: during the descent. At the departure end, 5 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
- B737 at 14,500 ft, 40 nm northwest, 10:30 pm PDT (05:30 UTC): light turbulence. 159 nm along the route, 40 nm northwest 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 14,000 ft, 44 nm north, 10:47 pm PDT (05:47 UTC): light rime icing, 6 °C. 198 nm along the route, 44 nm north 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
- PC12 at 11,000 ft, 39 nm south, 11:58 pm PDT (06:58 UTC): light turbulence, no icing, remarks: during the descent arrival KFMN ZDVWC-36. 516 nm along the route, 39 nm south of the line.
as filed, and in English
DRO UA /OV DRO/TM 0658/FL110/TP PC12/SK BASE117/TB CONS LGT/IC NEG/RM DURD ARR KFMN. ZDVWC-36
- Report
- a routine report filed through DRO
- Where
- over DRO
- Time
- 06:58 UTC
- Height
- at 11,000 ft
- Aircraft
- PC12
- Sky
- BASE117
- Turbulence
- continuous light
- Icing
- none
- Remarks
- during the descent arrival KFMN ZDVWC-36
- PC12 at 26,000 ft, 4 nm southeast, 11:27 pm PDT (06:27 UTC): light chop turbulence, remarks: ZDVWC-12. 605 nm along the route, 4 nm southeast of the line.
as filed, and in English
GUC UA /OV HBU090040/TM 0627/FL260/TP PC12/TB OCNL LGT CHOP/RM ZDVWC-12
- Report
- a routine report filed through GUC
- Where
- 40 nm east (090°) of HBU
- Time
- 06:27 UTC
- Height
- at 26,000 ft
- Aircraft
- PC12
- Turbulence
- occasional light chop
- Remarks
- ZDVWC-12
- A320 at 31,000 ft, 21 nm southeast, 11:58 pm PDT (06:58 UTC): light chop turbulence, remarks: mtw a 10-knot loss of airspeed 100FT zdvwc. 645 nm along the route, 21 nm southeast of the line.
as filed, and in English
PUB UA /OV PUB260040/TM 0658/FL310/TP A320/TB LGT CHOP/RM MTW +/-10KT 100FT. ZDVWC
- Report
- a routine report filed through PUB
- Where
- 40 nm west (260°) of PUB
- Time
- 06:58 UTC
- Height
- at 31,000 ft
- Aircraft
- A320
- Turbulence
- light chop
- Remarks
- mtw a 10-knot loss of airspeed 100FT zdvwc
- B738 at 23,000 ft, 44 nm north, 11:23 pm PDT (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. 645 nm along the route, 44 nm north 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
- CRJ2 at 22,000 ft, 34 nm northwest, 11:35 pm PDT (06:35 UTC): no turbulence up to 26,000 ft, no icing, clear from 22,000 ft to 60,000 ft, remarks: during the descent ZDVWC-26. 655 nm along the route, 34 nm northwest of the line.
as filed, and in English
DEN UA /OV DEN220060/TM 0635/FL220/TP CRJ2/SK SKC/TB NEG BLO 260/IC NEG/RM DURD/ ZDVWC-26
- Report
- a routine report filed through DEN
- Where
- 60 nm southwest (220°) of DEN
- Time
- 06:35 UTC
- Height
- at 22,000 ft
- Aircraft
- CRJ2
- Sky
- clear
- Turbulence
- no below 26,000 ft
- Icing
- none
- Remarks
- during the descent ZDVWC-26
- E170 at 22,500 ft, 32 nm north, 10:06 pm PDT (05:06 UTC): light to moderate turbulence up to 23,000 ft, remarks: during the descent tbarr star ZDVWC-13. 655 nm along the route, 32 nm north of the line.
as filed, and in English
DEN UA /OV DEN216057/TM 0506/FL225/TP E170/TB CONS LGT OCNL MOD BLO 230/RM DURD TBARR STAR. ZDVWC-13
- Report
- a routine report filed through DEN
- Where
- 57 nm southwest (216°) of DEN
- Time
- 05:06 UTC
- Height
- at 22,500 ft
- Aircraft
- E170
- Turbulence
- continuous light occasional moderate below 23,000 ft
- Remarks
- during the descent tbarr star ZDVWC-13
- A21N at 33,000 ft, 9 nm north, 11:59 pm PDT (06:59 UTC): light chop turbulence, remarks: mtw a 10-knot loss of airspeed 100FT zdvwc. At the destination end, 9 nm north of the line.
as filed, and in English
COS UA /OV BRK/TM 0659/FL330/TP A21N/TB LGT CHOP/RM MTW +/-10KT 100FT. ZDVWC
- Report
- a routine report filed through COS
- Where
- over BRK
- Time
- 06:59 UTC
- Height
- at 33,000 ft
- Aircraft
- A21N
- Turbulence
- light chop
- Remarks
- mtw a 10-knot loss of airspeed 100FT 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 7 forecast points nearest it (ONT, LAS, PRC, BCE, FMN, ALS, PUB). 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 23 kt | −20 kt | 8 °C | 140 kt | 4 h 53 min | 6:32 am MDT (12:32 UTC) |
| 9,500 ft | 210° at 24 kt | −21 kt | 6 °C | 141 kt | 4 h 51 min | 6:30 am MDT (12:30 UTC) |
| 11,500 ft | 220° at 30 kt | −26 kt | 1 °C | 146 kt | 4 h 41 min | 6:20 am MDT (12:20 UTC) |
| 13,500 ft | 220° at 35 kt | −31 kt | -3 °C | 151 kt | 4 h 32 min | 6:11 am MDT (12:11 UTC) |
| 15,500 ft | 220° at 41 kt | −36 kt | -7 °C | 156 kt | 4 h 23 min | 6:02 am MDT (12:02 UTC) |
| 17,500 ft | 220° at 47 kt | −41 kt | -10 °C | 161 kt | 4 h 15 min | 5:54 am MDT (11:54 UTC) |
| 18,000 ft FL180 | 220° at 49 kt | −43 kt | -11 °C | 163 kt | 4 h 12 min | 5:51 am MDT (11:51 UTC) |
| 24,000 ft FL240 | 220° at 58 kt | −52 kt | -21 °C | 172 kt | 3 h 59 min | 5:38 am MDT (11:38 UTC) |
| 30,000 ft FL300 | 230° at 67 kt | −63 kt | -29 °C | 183 kt | 3 h 44 min | 5:23 am MDT (11:23 UTC) |
| 34,000 ft FL340 | 230° at 70 kt | −68 kt | -34 °C | 188 kt | 3 h 38 min | 5:17 am MDT (11:17 UTC) |
| 39,000 ft FL390 | 220° at 60 kt | −56 kt | -44 °C | 176 kt | 3 h 53 min | 5:32 am MDT (11:32 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; 65 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° | |
| PRC | used from 248 nm out; 88 nm from the line | 210/25 5° | 200/30 1° | 220/55 -10° | 220/61 -21° | 220/84 -28° | 230/90 -34° | 230/73 -45° | ||
| BCE | used from 298 nm out; 77 nm from the line | 220/27 -1° | 210/40 -13° | 220/54 -21° | 220/64 -30° | 220/64 -34° | 220/52 -44° | |||
| FMN | used from 397 nm out; 81 nm from the line | 220/28 9° | 220/40 2° | 220/53 -10° | 220/62 -22° | 230/79 -28° | 240/91 -34° | 230/71 -45° | ||
| ALS | used from 546 nm out; 66 nm from the line | 230/37 4° | 220/54 -9° | 230/62 -22° | 240/77 -26° | 240/74 -33° | 230/59 -45° | |||
| PUB | used from 645 nm out; 37 nm from the line | 230/25 13° | 230/32 6° | 220/44 -8° | 230/49 -21° | 240/70 -28° | 240/67 -34° | 240/58 -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 |
|---|---|---|---|---|---|---|---|
| ONT Ontario, CA | departure | marginal VFR Sky: a broken layer at 2,600 feet, overcast at 3,500 feet | from the north (350°) at 3 knots | 7 mi | 2,600 ft | 944 ft | 11:53 pm PDT (06:53 UTC) |
| SBD San Bernardino, CA | 20 nm out, 7 nm south of the line, tower | VFR Sky: scattered clouds at 5,500 feet, a broken layer at 8,500 feet, overcast at 11,000 feet Weather: light drizzle | from the southeast (130°) at 4 knots | 10+ mi | 8,500 ft | 1,159 ft | 07:20 UTC |
| IFP Bullhead City, AZ | 169 nm out, 12 nm south of the line, tower | VFR Sky: a few clouds at 3,100 feet, scattered clouds at 10,000 feet, a broken layer at 12,000 feet | from the south-southwest (210°) at 5 knots | 10+ mi | 12,000 ft | 707 ft | 07:10 UTC |
| GCN Grand Canyon, AZ | 288 nm out, 19 nm southeast of the line, tower | IFR Sky: a broken layer at 800 feet, a broken layer at 1,200 feet, overcast at 3,900 feet | from the south (190°) at 11 knots | 10+ mi | 800 ft | 6,608 ft | 07:16 UTC |
| PGA Page, AZ | 347 nm out, 20 nm northwest of the line | VFR | calm | 10+ mi | none | 4,316 ft | 06:53 UTC |
| CEZ Cortez, CO | 476 nm out, 15 nm southeast of the line | VFR Sky: a broken layer at 7,500 feet | from the south (190°) at 14 knots | 10+ mi | 7,500 ft | 5,917 ft | 06:53 UTC |
| TEX Telluride, CO | 526 nm out, 8 nm northwest of the line | VFR Sky: a broken layer at 5,000 feet, overcast at 6,000 feet | from the south-southwest (210°) at 6 knots, gusting to 25 | 10+ mi | 5,000 ft | 9,069 ft | 07:15 UTC |
| ANK Salida, CO | 615 nm out, 9 nm north of the line | VFR | from the south-southwest (200°) at 15 knots | 10+ mi | none | 7,523 ft | 07:15 UTC |
| AEJ Buena Vista, CO | 625 nm out, 24 nm northwest of the line | VFR Sky: a broken layer at 7,500 feet, overcast at 8,500 feet | calm | 10+ mi | 7,500 ft | 7,950 ft | 07:15 UTC |
| COS Colorado Springs, CO | destination | VFR Sky: a few clouds at 14,000 feet, a few clouds at 20,000 feet | from the west-southwest (240°) at 7 knots | 10+ mi | none | 6,187 ft | 12:54 am MDT (06:54 UTC) |
The highest airport on this list sits at 9,069 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At COS when you get there the forecast at the estimated arrival, 5:17 am MDT (11:17 UTC)
Wind from the south at 12 knots, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 20,000 feet VFR
The whole forecast for COS
- From Mon 12:00 am MDT (06:00 UTC): wind from the south at 12 knots, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 20,000 feet
- From Mon 6:00 am MDT (12:00 UTC): wind from the north-northeast at 8 knots, visibility more than 6 miles, clear skies
- From Mon 11:00 am MDT (17:00 UTC): wind from the south at 15 knots, gusting to 25, visibility more than 6 miles, scattered clouds at 12,000 feet
- From Mon 1:00 pm MDT (19:00 UTC): wind from the south-southwest at 20 knots, gusting to 30, visibility more than 6 miles, scattered clouds at 12,000 feet
- From Mon 7:00 pm MDT (01:00 UTC): wind from the south-southwest at 12 knots, visibility more than 6 miles, clear skies
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 24 nm from the route, 159 nm along the route · a VIP movement · starts tomorrow · ZLA
- 6/8891 Bullhead City, AZ, Wednesday, October 14, 2026 Local 2 nm from the route, 169 nm along the route · a VIP movement · starts Wednesday 14 October · ZLA
- 6/8784 LAKE GEORGE, CO, Sunday, October 11, 2026 through Tuesday, October 13, 2026 UTC 18 nm from the route, 655 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZDV
Daylight
Sunset at ONT 6:18 pm PDT (01:18 UTC), at COS 6:23 pm MDT (00:23 UTC) (civil twilight ends 6:50 pm MDT (00:50 UTC)). At 120 knots the arrival at COS is before sunrise there (7:04 am MDT (13:04 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: Ontario International, City Of Colorado Springs Municipal.