Aspen-Pitkin County/Sardy Field to Los Angeles International ASE → LAX
640 nautical miles (736 statute miles) southwest on a straight line, true course 244°, about 235° magnetic at the departure end (variation 9E). At 120 knots that is 6 h 49 min at the quickest height in today's winds (8,500 ft, a 26-knot headwind), arriving about 11:18 pm PDT (06:18 UTC), after sunset at the destination. Right now ASE is VFR, wind from the west-northwest (290°) at 9 knots; LAX is VFR, wind from the southwest (230°) at 5 knots, gusting to 15. 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: 2,300 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 W63W: thunderstorms (a convective SIGMET) up to 37,000 ft, moving from the southwest at 40 knots, until 6:55 pm MDT (00:55 UTC). Over the route from 20 to 160 nm out.
as issued
WSUS33 KKCI 112255 MKCW WST 112255 CONVECTIVE SIGMET 63W VALID UNTIL 0055Z CO NM AZ UT FROM 30SSW MTU-30NW PUB-20NW TCC-60SE ABQ-40N SJN-30SSW MTU AREA SEV TS MOV FROM 23040KT. TOPS TO FL370. WIND GUSTS TO 50KT POSS.
- 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 190 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the first 540 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 470 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 460 nm of the route.
- AIRMET TANGO 3W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 120 to 170 nm out.
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 170 to 540 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). Over the route from 280 to 420 nm out.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 470 to 620 nm out.
- AIRMET SIERRA 6E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 580 to 630 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 ASE.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- C680A at 16,000 ft, 0 nm northeast, 4:59 pm MDT (22:59 UTC): moderate turbulence, scattered clouds above 16,000 ft, remarks: during the descent. At the departure end, 0 nm northeast of the line.
as filed, and in English
ASE UA /OV HAERI/TM 2259/FL160/TP C680A/SK SCT160/TB CONS MOD/RM DURD
- Report
- a routine report filed through ASE
- Where
- haeri
- Time
- 22:59 UTC
- Height
- at 16,000 ft
- Aircraft
- C680A
- Sky
- scattered clouds from 16,000 ft
- Turbulence
- continuous moderate
- Remarks
- during the descent
- C700 at 16,000 ft, 22 nm northeast, 3:55 pm MDT (21:55 UTC): moderate turbulence. At the departure end, 22 nm northeast of the line.
as filed, and in English
ASE UA /OV WERNR/TM 2155/FL160/TP C700/TB MOD
- Report
- a routine report filed through ASE
- Where
- wernr
- Time
- 21:55 UTC
- Height
- at 16,000 ft
- Aircraft
- C700
- Turbulence
- moderate
- B737 at 36,000 ft, 13 nm north, 3:28 pm MDT (21:28 UTC): moderate turbulence, remarks: zdvwc. At the departure end, 13 nm north of the line.
as filed, and in English
ASE UA /OV DBL/TM 2128/FL360/TP B737/TB MOD/RM ZDVWC
- Report
- a routine report filed through ASE
- Where
- over DBL
- Time
- 21:28 UTC
- Height
- at 36,000 ft
- Aircraft
- B737
- Turbulence
- moderate
- Remarks
- zdvwc
- LJ40 at 19,000 ft, 1 nm northwest, 3:32 pm MDT (21:32 UTC): moderate turbulence. At the departure end, 1 nm northwest of the line.
as filed, and in English
ASE UA /OV ASE240010/TM 2132/FL190/TP LJ40/TB MOD
- Report
- a routine report filed through ASE
- Where
- 10 nm southwest (240°) of ASE
- Time
- 21:32 UTC
- Height
- at 19,000 ft
- Aircraft
- LJ40
- Turbulence
- moderate
- C680 at 18,000 ft, 2 nm southeast, 4:35 pm MDT (22:35 UTC): moderate turbulence, remarks: from 18,000 ft to 10,000 ft. At the departure end, 2 nm southeast of the line.
as filed, and in English
ASE UA /OV ASE230020/TM 2235/FL180/TP C680/TB MOD/RM 180-100
- Report
- a routine report filed through ASE
- Where
- 20 nm southwest (230°) of ASE
- Time
- 22:35 UTC
- Height
- at 18,000 ft
- Aircraft
- C680
- Turbulence
- moderate
- Remarks
- from 18,000 ft to 10,000 ft
- B738 at 32,000 ft, 50 nm north, 2:30 pm MDT (20:30 UTC): moderate turbulence, remarks: ZDVWC-03. 40 nm along the route, 50 nm north of the line.
as filed, and in English
EEO UA /OV EKR185023/TM 2030/FL320/TP B738/TB MOD/RM ZDVWC-03
- Report
- a routine report filed through EEO
- Where
- 23 nm south (185°) of EKR
- Time
- 20:30 UTC
- Height
- at 32,000 ft
- Aircraft
- B738
- Turbulence
- moderate
- Remarks
- ZDVWC-03
- C25B at 23,000 ft, 4 nm south, 3:06 pm MDT (21:06 UTC): moderate rime icing, -5 °C, remarks: zlawc. 290 nm along the route, 4 nm south of the line.
as filed, and in English
GJT UA /OV PGA255040/TM 2106/FL230/TP C25B/TA M05/IC MOD RIME/RM ZLAWC AWC-WEB
- Report
- a routine report filed through GJT
- Where
- 40 nm west (255°) of PGA
- Time
- 21:06 UTC
- Height
- at 23,000 ft
- Aircraft
- C25B
- Temperature
- −5 °C
- Icing
- moderate rime
- Remarks
- zlawc
- UAL493 at 24,000 ft, 21 nm north, 4:54 pm MDT (22:54 UTC): moderate turbulence. 350 nm along the route, 21 nm north of the line.
as filed, and in English
ARP UAL493 3648N 11330W 2254 F240 TB MODERATE SK IN CLOUDS IC LIGHT
- Report
- a routine report filed through ARP
- CL30 at 24,000 ft, 9 nm southeast, 3:00 pm MDT (21:00 UTC): moderate clear-air turbulence from 19,000 ft to 24,000 ft, light rime icing, -3 °C, remarks: during the climb zlawc. 530 nm along the route, 9 nm southeast of the line.
as filed, and in English
DAG UA /OV HEC/TM 2100/FL240/TP CL30/TA M03/TB MOD CAT OCNL 190-240/IC LGT RIME/RM DURC ZLAWC AWC-WEB
- Report
- a routine report filed through DAG
- Where
- over HEC
- Time
- 21:00 UTC
- Height
- at 24,000 ft
- Aircraft
- CL30
- Temperature
- −3 °C
- Turbulence
- moderate clear-air turbulence occasional from 19,000 ft to 24,000 ft
- Icing
- light rime
- Remarks
- during the climb zlawc
- B737 at 14,000 ft, 2 nm east, 3:54 pm MDT (21:54 UTC): moderate turbulence. 590 nm along the route, 2 nm east of the line.
as filed, and in English
ONT UA /OV 20N ONT/TM 2154/FL140/TP B737/TB MOD
- Report
- a routine report filed through ONT
- Where
- 20N ont
- Time
- 21:54 UTC
- Height
- at 14,000 ft
- Aircraft
- B737
- Turbulence
- moderate
- B738 descending, 2 nm east, 3:37 pm MDT (21:37 UTC): moderate chop turbulence. 590 nm along the route, 2 nm east of the line.
as filed, and in English
ONT UA /OV ONT358021/TM 2137/FLDURD/TP B738/TB MODERATE CHOP STARTING AT 130
- Report
- a routine report filed through ONT
- Where
- 21 nm north (358°) of ONT
- Time
- 21:37 UTC
- Height
- during the descent
- Aircraft
- B738
- Turbulence
- moderate chop starting at at 13,000 ft
- C680A at 14,000 ft, 13 nm north, 5:02 pm MDT (23:02 UTC): light to moderate chop turbulence. At the departure end, 13 nm north of the line.
as filed, and in English
ASE UA /OV DBL/TM 2302/FL140/TP C680A/TB LGT OCNL MOD CHOP
- Report
- a routine report filed through ASE
- Where
- over DBL
- Time
- 23:02 UTC
- Height
- at 14,000 ft
- Aircraft
- C680A
- Turbulence
- light occasional moderate chop
- B738 at 38,000 ft, 47 nm northeast, 4:39 pm MDT (22:39 UTC): light chop turbulence, remarks: light mountain wave a 8-knot loss of airspeed zdvwc. At the departure end, 47 nm northeast of the line.
as filed, and in English
ASE UA /OV DBL047040/TM 2239/FL380/TP B738/TB LGT CHOP/RM LGT MTN WAVE +/-8KTS ZDVWC
- Report
- a routine report filed through ASE
- Where
- 40 nm northeast (047°) of DBL
- Time
- 22:39 UTC
- Height
- at 38,000 ft
- Aircraft
- B738
- Turbulence
- light chop
- Remarks
- light mountain wave a 8-knot loss of airspeed zdvwc
- B739 at 22,000 ft, 37 nm northeast, 3:53 pm MDT (21:53 UTC): light turbulence, remarks: ZDVWC-06. At the departure end, 37 nm northeast of the line.
as filed, and in English
EGE UA /OV SXW090040/TM 2153/FL220/TP B739/TB CONS LGT/RM ZDVWC-06
- Report
- a routine report filed through EGE
- Where
- 40 nm east (090°) of SXW
- Time
- 21:53 UTC
- Height
- at 22,000 ft
- Aircraft
- B739
- Turbulence
- continuous light
- Remarks
- ZDVWC-06
16 more routine reports are on the map.
Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 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 4 forecast points nearest it (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 | 220° at 29 kt | +26 kt | 7 °C | 94 kt | 6 h 49 min | 11:18 pm PDT (06:18 UTC) |
| 10,500 ft | 220° at 36 kt | +33 kt | 2 °C | 87 kt | 7 h 21 min | 11:50 pm PDT (06:50 UTC) |
| 12,500 ft | 220° at 38 kt | +35 kt | -1 °C | 85 kt | 7 h 32 min | 12:01 am PDT (07:01 UTC) |
| 14,500 ft | 210° at 41 kt | +36 kt | -5 °C | 84 kt | 7 h 37 min | 12:06 am PDT (07:06 UTC) |
| 16,500 ft | 210° at 44 kt | +38 kt | -9 °C | 82 kt | 7 h 48 min | 12:17 am PDT (07:17 UTC) |
| 18,000 ft FL180 | 210° at 47 kt | +39 kt | -12 °C | 81 kt | 7 h 54 min | 12:23 am PDT (07:23 UTC) |
| 24,000 ft FL240 | 220° at 47 kt | +43 kt | -22 °C | 77 kt | 8 h 19 min | 12:48 am PDT (07:48 UTC) |
| 30,000 ft FL300 | 220° at 53 kt | +49 kt | -28 °C | 71 kt | 9 h 01 min | 1:30 am PDT (08:30 UTC) |
| 34,000 ft FL340 | 220° at 57 kt | +52 kt | -35 °C | 68 kt | 9 h 25 min | 1:54 am PDT (08:54 UTC) |
| 39,000 ft FL390 | 230° at 58 kt | +56 kt | -45 °C | 64 kt | 10 h | 2:29 am PDT (09:29 UTC) |
Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| GJT | used from 0 nm out; 55 nm from the line | 210/40 11° | 210/46 3° | 210/61 -10° | 210/68 -22° | 220/57 -29° | 230/59 -36° | 240/66 -46° | ||
| BCE | used from 150 nm out; 94 nm from the line | 210/47 0° | 200/50 -12° | 220/31 -23° | 220/56 -26° | 220/58 -35° | 230/58 -45° | |||
| LAS | used from 350 nm out; 65 nm from the line | 200/25 11° | 230/22 5° | 240/25 -1° | 220/37 -12° | 220/44 -21° | 210/52 -27° | 210/60 -34° | 220/58 -44° | |
| ONT | used from 500 nm out; 79 nm from the line | 230/11 | 200/17 6° | 230/27 4° | 230/32 -2° | 210/39 -12° | 220/51 -20° | 220/48 -29° | 210/51 -34° | 210/52 -44° |
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 |
|---|---|---|---|---|---|---|---|
| ASE Aspen, CO | departure | VFR Sky: a broken layer at 9,000 feet, a broken layer at 11,000 feet Weather: light rain | from the west-northwest (290°) at 9 knots | 10+ mi | 9,000 ft | 7,837 ft | 5:09 pm MDT (23:09 UTC) |
| AJZ Delta, CO | 60 nm out, 2 nm west of the line | reported, no category | from the southwest (220°) at 18 knots, gusting to 25 | 9,000 ft | 5,193 ft | 23:15 UTC | |
| AIB Nucla, CO | 100 nm out, 17 nm southeast of the line | low IFR Sky: scattered clouds at 7,000 feet, a broken layer at 8,500 feet Weather: light drizzle | from the south (180°) at 18 knots, gusting to 22 | 0.5 mi | 8,500 ft | 5,945 ft | 22:15 UTC |
| KNB Kanab, UT | 300 nm out, 8 nm north of the line | reported, no category | from the south (190°) at 13 knots | 4 mi | none | 4,867 ft | 23:15 UTC |
| AZC Colorado City, AZ | 320 nm out, 17 nm northwest of the line | marginal VFR Sky: scattered clouds at 2,000 feet, a broken layer at 3,600 feet, overcast at 6,500 feet Weather: heavy rain | from the southwest (230°) at 10 knots, gusting to 21 | 3 mi | 3,600 ft | 4,873 ft | 23:15 UTC |
| HND Las Vegas, NV | 440 nm out, 18 nm northwest of the line, tower | VFR Sky: scattered clouds at 12,000 feet | from the south-southwest (210°) at 18 knots | 10+ mi | none | 2,491 ft | 22:56 UTC |
| APV Apple Valley, CA | 570 nm out, 2 nm east of the line | no report just now | 3,061 ft | ||||
| EMT El Monte, CA | 620 nm out, 3 nm southeast of the line, tower | VFR Sky: scattered clouds at 4,000 feet, a broken layer at 5,000 feet | from the south-southeast (150°) at 10 knots | 10+ mi | 5,000 ft | 295 ft | 22:45 UTC |
| LAX Los Angeles, CA | destination | VFR Sky: scattered clouds at 3,200 feet, a broken layer at 4,400 feet | from the southwest (230°) at 5 knots, gusting to 15 | 10+ mi | 4,400 ft | 127 ft | 3:53 pm PDT (22:53 UTC) |
The highest airport on this list sits at 7,837 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At LAX when you get there the forecast at the estimated arrival, 11:18 pm PDT (06:18 UTC)
Wind from the southwest at 8 knots, visibility more than 6 miles, a broken layer at 5,000 feet, overcast at 10,000 feet VFR
The whole forecast for LAX
- From Sun 2:00 pm PDT (21:00 UTC): wind from the southwest at 12 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 4,000 feet, a broken layer at 10,000 feet
- 30% chance between Sun 2:00 pm PDT (21:00 UTC) and 6:00 pm PDT (01:00 UTC): light rain showers
- From Sun 6:00 pm PDT (01:00 UTC): wind from the southwest at 12 knots, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 12,000 feet
- 30% chance between Sun 6:00 pm PDT (01:00 UTC) and 11:00 pm PDT (06:00 UTC): light rain showers
- From Sun 11:00 pm PDT (06:00 UTC): wind from the southwest at 8 knots, visibility more than 6 miles, a broken layer at 5,000 feet, overcast at 10,000 feet
- 30% chance between Mon 12:00 am PDT (07:00 UTC) and 5:00 am PDT (12:00 UTC): light rain showers
- From Mon 5:00 am PDT (12:00 UTC): wind light and variable, visibility more than 6 miles, a broken layer at 5,000 feet, overcast at 10,000 feet
- 30% chance between Mon 5:00 am PDT (12:00 UTC) and 11:00 am PDT (18:00 UTC): light rain showers
- From Mon 11:00 am PDT (18:00 UTC): wind from the west-southwest at 12 knots, visibility more than 6 miles, a broken layer at 5,000 feet, overcast at 10,000 feet
- 30% chance between Mon 11:00 am PDT (18:00 UTC) and 5:00 pm PDT (00:00 UTC): light rain showers
The forecast for ASE, the departure
- From Sun 12:00 pm MDT (18:00 UTC): wind from the south at 12 knots, gusting to 27, visibility more than 6 miles, showers nearby, scattered clouds at 6,000 feet, a broken layer at 9,000 feet
- At times between Sun 2:00 pm MDT (20:00 UTC) and 6:00 pm MDT (00:00 UTC): wind variable at 22 knots, gusting to 35, light thunderstorms with rain, a broken layer at 6,000 feet (thunderheads)
- From Sun 6:00 pm MDT (00:00 UTC): wind from the south-southeast at 9 knots, visibility more than 6 miles, light rain showers, scattered clouds at 6,000 feet, a broken layer at 9,000 feet
- 30% chance between Sun 8:00 pm MDT (02:00 UTC) and 9:00 pm MDT (03:00 UTC): visibility 4 miles, light rain showers, a broken layer at 4,000 feet
- From Mon 12:00 am MDT (06:00 UTC): wind from the southeast at 9 knots, visibility more than 6 miles, scattered clouds at 4,500 feet, a broken layer at 6,000 feet
- 30% chance between Mon 12:00 am MDT (06:00 UTC) and 6:00 am MDT (12:00 UTC): visibility 4 miles, light rain showers, a broken layer at 4,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/8808 Las Vegas, NV, Tuesday, October 13, 2026 Local 22 nm from the route, 440 nm along the route · security · starts Tuesday 13 October · ZLA
- 4/3635 DISNEYLAND THEME PARK, ANAHEIM,, CA 18 nm from the route, at the destination end · security · ZLA
Daylight
Sunset at ASE 6:33 pm MDT (00:33 UTC), at LAX 6:23 pm PDT (01:23 UTC) (civil twilight ends 6:48 pm PDT (01:48 UTC)). At 120 knots the arrival at LAX is before sunrise there (6:56 am PDT (13:56 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: Aspen-Pitkin County/Sardy Field, Los Angeles International.