Kirksville Regional to Aspen-Pitkin County/Sardy Field IRK → ASE
663 nautical miles (763 statute miles) west on a straight line, true course 270°, about 267° magnetic at the departure end (variation 3E). At 120 knots that is 6 h 12 min at the quickest height in today's winds (4,500 ft, a 13-knot headwind), arriving about 11:42 pm MDT (05:42 UTC), after sunset at the destination. 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 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 198 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 129 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 30 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 10 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 IRK.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- urgent E545 at 6,000 ft, 9 nm northwest, 4:49 pm CDT (21:49 UTC): remarks: low-level wind shear + 5 knots fap runway 17L. 564 nm along the route, 9 nm northwest of the line.
as filed, and in English
APA UUA /OV APA350002/TM 2149/FL060/TP E545/RM LLWS +/- 5 KT FAP RWY 17L
- Report
- an urgent report filed through APA
- Where
- 2 nm north (350°) of APA
- Time
- 21:49 UTC
- Height
- at 6,000 ft
- Aircraft
- E545
- Remarks
- low-level wind shear + 5 knots fap runway 17L
- GLF5 at 45,000 ft, 15 nm south, 5:44 pm CDT (22:44 UTC): moderate turbulence, remarks: ZDVWC-46. 564 nm along the route, 15 nm south of the line.
as filed, and in English
COS UA /OV COS350025/TM 2244/FL450/TP GLF5/TB MOD /RM ZDVWC-46
- Report
- a routine report filed through COS
- Where
- 25 nm north (350°) of COS
- Time
- 22:44 UTC
- Height
- at 45,000 ft
- Aircraft
- GLF5
- Turbulence
- moderate
- Remarks
- ZDVWC-46
- CRJ2 at 19,000 ft, 30 nm south, 5:02 pm CDT (22:02 UTC): moderate chop turbulence, remarks: during the climb from KDEN from 12,000 ft to 19,000 ft ZDVWC-41. 574 nm along the route, 30 nm south of the line.
as filed, and in English
COS UA /OV BRK262015/TM 2202/FL190/TP CRJ2/TB MOD CHOP/RM DURC FROM KDEN 120-190 ZDVWC-41
- Report
- a routine report filed through COS
- Where
- 15 nm west (262°) of BRK
- Time
- 22:02 UTC
- Height
- at 19,000 ft
- Aircraft
- CRJ2
- Turbulence
- moderate chop
- Remarks
- during the climb from KDEN from 12,000 ft to 19,000 ft ZDVWC-41
- B739 at 31,000 ft, 25 nm south, 3:49 pm CDT (20:49 UTC): moderate turbulence, remarks: mtw 15+20 zdvwc. 614 nm along the route, 25 nm south of the line.
as filed, and in English
COS UA /OV BRK262055/TM 2049/FL310/TP B739/TB OCNL LGT-IMTMT MOD /RM MTW -15+20 ZDVWC
- Report
- a routine report filed through COS
- Where
- 55 nm west (262°) of BRK
- Time
- 20:49 UTC
- Height
- at 31,000 ft
- Aircraft
- B739
- Turbulence
- occasional lgt-imtmt moderate
- Remarks
- mtw 15+20 zdvwc
- C700 at 16,000 ft, 18 nm north, 4:55 pm CDT (21:55 UTC): moderate turbulence. At the destination end, 18 nm north 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
- C680A at 16,000 ft, 0 nm northeast, 5:59 pm CDT (22:59 UTC): moderate turbulence, scattered clouds above 16,000 ft, remarks: during the descent. At the destination 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
- C680 at 18,000 ft, 20 nm southwest, 5:35 pm CDT (22:35 UTC): moderate turbulence, remarks: from 18,000 ft to 10,000 ft. At the destination end, 20 nm southwest 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
- LJ40 at 19,000 ft, 10 nm west, 4:32 pm CDT (21:32 UTC): moderate turbulence. At the destination end, 10 nm west 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
- B737 at 36,000 ft, 13 nm north, 4:28 pm CDT (21:28 UTC): moderate turbulence, remarks: zdvwc. At the destination 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
- A321 at 30,000 ft, 49 nm north, 4:04 pm CDT (21:04 UTC): light chop turbulence, remarks: ZDVWC-16. 436 nm along the route, 49 nm north of the line.
as filed, and in English
SNY UA /OV SNY119051/TM 2104/FL300/TP A321/TB OCNL LGT CHOP/RM ZDVWC-16
- Report
- a routine report filed through SNY
- Where
- 51 nm southeast (119°) of SNY
- Time
- 21:04 UTC
- Height
- at 30,000 ft
- Aircraft
- A321
- Turbulence
- occasional light chop
- Remarks
- ZDVWC-16
- B737 at 15,000 ft, 18 nm north, 4:37 pm CDT (21:37 UTC): light turbulence, remarks: during the climb zdvwc. 535 nm along the route, 18 nm north of the line.
as filed, and in English
DEN UA /OV DEN080020/TM 2137/FL150/TP B737/TB CONS LGT OCNL CHOP 150-180/RM DURC ZDVWC
- Report
- a routine report filed through DEN
- Where
- 20 nm east (080°) of DEN
- Time
- 21:37 UTC
- Height
- at 15,000 ft
- Aircraft
- B737
- Turbulence
- continuous light occasional chop from 15,000 ft to 18,000 ft
- Remarks
- during the climb zdvwc
- B38M at 15,000 ft, 4 nm northwest, 4:04 pm CDT (21:04 UTC): light chop turbulence. 545 nm along the route, 4 nm northwest of the line.
as filed, and in English
DEN UA /OV DEN130020/TM 2104/FL150/TP B38M/TB LT CHOP
- Report
- a routine report filed through DEN
- Where
- 20 nm southeast (130°) of DEN
- Time
- 21:04 UTC
- Height
- at 15,000 ft
- Aircraft
- B38M
- Turbulence
- lt chop
- B737 descending, 20 nm north, 5:29 pm CDT (22:29 UTC): no turbulence up to 10,000 ft. 554 nm along the route, 20 nm north of the line.
as filed, and in English
DEN UA /OV DEN/TM 2229/FLDURD/TP B737/TB NEG BLO 100
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 22:29 UTC
- Height
- during the descent
- Aircraft
- B737
- Turbulence
- no below 10,000 ft
- CRJ2 at 6,500 ft, 20 nm north, 4:31 pm CDT (21:31 UTC): light chop turbulence. 554 nm along the route, 20 nm north of the line.
as filed, and in English
DEN UA /OV DEN/TM 2131/FL065/TP CRJ2/TB LGT CHOP ON FINAL RWY16L
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 21:31 UTC
- Height
- at 6,500 ft
- Aircraft
- CRJ2
- Turbulence
- light chop on final runway 16L
14 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 7 forecast points nearest it (COU, MKC, OMA, GRI, GLD, DEN, 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 |
|---|---|---|---|---|---|---|
| 4,500 ft | 200° at 28 kt | +13 kt | 19 °C | 107 kt | 6 h 12 min | 11:42 pm MDT (05:42 UTC) |
| 6,500 ft | 210° at 27 kt | +16 kt | 17 °C | 104 kt | 6 h 22 min | 11:52 pm MDT (05:52 UTC) |
| 8,500 ft | 220° at 25 kt | +16 kt | 14 °C | 104 kt | 6 h 22 min | 11:52 pm MDT (05:52 UTC) |
| 10,500 ft | 230° at 23 kt | +18 kt | 10 °C | 102 kt | 6 h 30 min | 12:00 am MDT (06:00 UTC) |
| 12,500 ft | 240° at 23 kt | +21 kt | 6 °C | 99 kt | 6 h 42 min | 12:12 am MDT (06:12 UTC) |
| 14,500 ft | 240° at 26 kt | +25 kt | 1 °C | 95 kt | 6 h 59 min | 12:29 am MDT (06:29 UTC) |
| 16,500 ft | 250° at 30 kt | +28 kt | -4 °C | 92 kt | 7 h 12 min | 12:42 am MDT (06:42 UTC) |
| 18,000 ft FL180 | 250° at 32 kt | +31 kt | -7 °C | 89 kt | 7 h 27 min | 12:57 am MDT (06:57 UTC) |
| 24,000 ft FL240 | 240° at 35 kt | +32 kt | -19 °C | 88 kt | 7 h 32 min | 1:02 am MDT (07:02 UTC) |
| 30,000 ft FL300 | 240° at 45 kt | +43 kt | -32 °C | 77 kt | 8 h 37 min | 2:07 am MDT (08:07 UTC) |
| 34,000 ft FL340 | 250° at 54 kt | +53 kt | -39 °C | 67 kt | 9 h 54 min | 3:24 am MDT (09:24 UTC) |
| 39,000 ft FL390 | 260° at 57 kt | +58 kt | -50 °C | 62 kt | 10 h 42 min | 4:12 am MDT (10:12 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| COU | used from 0 nm out; 86 nm from the line | 210/16 | 220/19 15° | 240/33 10° | 250/29 7° | 280/21 -6° | 280/19 -18° | 300/34 -31° | 300/40 -42° | 300/60 -52° |
| MKC | used from 50 nm out; 61 nm from the line | 200/28 | 220/30 16° | 270/20 11° | 280/22 7° | 260/27 -6° | 270/27 -18° | 280/38 -32° | 270/38 -40° | 280/50 -52° |
| OMA | used from 149 nm out; 78 nm from the line | 190/34 | 230/34 19° | 250/25 12° | 250/18 6° | 250/22 -7° | 250/28 -19° | 260/34 -32° | 260/39 -41° | 280/56 -51° |
| GRI | used from 198 nm out; 72 nm from the line | 210/31 19° | 240/21 14° | 240/17 6° | 260/27 -7° | 260/34 -18° | 240/45 -32° | 250/56 -40° | 260/62 -51° | |
| GLD | used from 347 nm out; 57 nm from the line | 190/29 | 200/30 15° | 240/23 8° | 250/39 -7° | 230/39 -19° | 230/57 -31° | 240/67 -39° | 250/62 -49° | |
| DEN | used from 495 nm out; 44 nm from the line | 190/31 16° | 210/32 7° | 240/41 -8° | 230/47 -21° | 240/56 -32° | 250/65 -37° | 250/61 -47° | ||
| GJT | used from 644 nm out; 87 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° |
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 |
|---|---|---|---|---|---|---|---|
| IRK Kirksville, MO | departure | no report just now | 966 ft | ||||
| TRX Trenton, MO | 50 nm out, 2 nm east of the line | no report just now | 757 ft | ||||
| STJ St Joseph, MO | 109 nm out, 18 nm south of the line, tower | no report just now | 826 ft | ||||
| FNB Falls City, NE | 139 nm out, 2 nm northwest of the line | no report just now | 983 ft | ||||
| TKO Mankato, KS | 257 nm out, 10 nm south of the line | no report just now | 1,859 ft | ||||
| PHG Phillipsburg, KS | 317 nm out, 11 nm southeast of the line | no report just now | 1,910 ft | ||||
| OIN Oberlin, KS | 366 nm out, 2 nm west of the line | no report just now | 2,706 ft | ||||
| SYF St Francis, KS | 426 nm out, 1 nm north of the line | no report just now | 3,429 ft | ||||
| LIC Limon, CO | 515 nm out, 18 nm south of the line | no report just now | 5,374 ft | ||||
| APA Denver, CO | 564 nm out, 8 nm northwest of the line, tower | no report just now | 5,884 ft | ||||
| LXV Leadville, CO | 634 nm out, 6 nm southwest of the line | no report just now | 9,933 ft | ||||
| ASE Aspen, CO | destination | no report just now | 7,837 ft |
The highest airport on this list sits at 9,933 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At ASE when you get there the forecast at the estimated arrival, 11:42 pm MDT (05:42 UTC)
ASE has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/8784 LAKE GEORGE, CO, Sunday, October 11, 2026 through Tuesday, October 13, 2026 UTC 23 nm from the route, 594 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZDV
Daylight
Sunset at IRK 6:36 pm CDT (23:36 UTC), at ASE 6:33 pm MDT (00:33 UTC) (civil twilight ends 7:00 pm MDT (01:00 UTC)). At 120 knots the arrival at ASE is before sunrise there (7:14 am MDT (13:14 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: Kirksville Regional, Aspen-Pitkin County/Sardy Field.