George Bush Intcntl/Houston Airport to City Of Colorado Springs Municipal IAH → COS
703 nautical miles (809 statute miles) northwest on a straight line, true course 321°, about 318° magnetic at the departure end (variation 3E). At 120 knots that is 5 h 10 min at the quickest height in today's winds (4,500 ft, a 16-knot tailwind), arriving about 12:04 am MDT (06:04 UTC), after sunset at the destination. Right now IAH is VFR, wind from the east-southeast (120°) at 11 knots; COS is VFR, wind from the south-southwest (210°) at 13 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: 1,452 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 W68W: thunderstorms (a convective SIGMET) up to 36,000 ft, moving from the southwest at 40 knots, until 7:55 pm CDT (00:55 UTC). Near the route, 624 nm along the route.
as issued
WSUS33 KKCI 112355 MKCW WST 112355 CONVECTIVE SIGMET 68W VALID UNTIL 0155Z CO NM AZ UT FROM 30W CHE-20NNW TBE-60SE ABQ-40N SJN-30SW MTU-30W CHE AREA TS MOV FROM 23040KT. TOPS TO FL360.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 50 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. 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 IAH.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- GLF5 at 45,000 ft, 25 nm north, 5:44 pm CDT (22:44 UTC): moderate turbulence, remarks: ZDVWC-46. At the destination end, 25 nm north 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, 14 nm northwest, 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. At the destination end, 14 nm northwest 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
- B39M at 27,000 ft, 2 nm south, 7:42 pm CDT (00:42 UTC): light chop turbulence, remarks: zhu. At the departure end, 2 nm south of the line.
as filed, and in English
IAH UA /OV IH340035/TM 0042/FL270/TP B39M/TB LT CHOP DURC/RM ZHU
- Report
- a routine report filed through IAH
- Where
- IH340035
- Time
- 00:42 UTC
- Height
- at 27,000 ft
- Aircraft
- B39M
- Turbulence
- lt chop during the climb
- Remarks
- zhu
- A320 at 24,000 ft, 2 nm south, 5:07 pm CDT (22:07 UTC): light chop turbulence, remarks: during the climb zhu. At the departure end, 2 nm south of the line.
as filed, and in English
IAH UA /OV IAH/TM 2207/FL240/TP A320/TB OCNL LGT CHOP /RM DURC. ZHU
- Report
- a routine report filed through IAH
- Where
- over IAH
- Time
- 22:07 UTC
- Height
- at 24,000 ft
- Aircraft
- A320
- Turbulence
- occasional light chop
- Remarks
- during the climb zhu
- A320 at 35,000 ft, 43 nm southwest, 7:43 pm CDT (00:43 UTC): light chop turbulence, remarks: ZFW47. 386 nm along the route, 43 nm southwest of the line.
as filed, and in English
CDS UA /OV CDS270030/TM 0043/FL350/TP A320/TB LGT CHOP/RM ZFW47
- Report
- a routine report filed through CDS
- Where
- 30 nm west (270°) of CDS
- Time
- 00:43 UTC
- Height
- at 35,000 ft
- Aircraft
- A320
- Turbulence
- light chop
- Remarks
- ZFW47
- A21N at 31,000 ft, 12 nm southwest, 7:24 pm CDT (00:24 UTC): remarks: mountain wave +/-10-20KT ZDVWC-29. 673 nm along the route, 12 nm southwest of the line.
as filed, and in English
PUB UA /OV PUB/TM 0024/FL310/TP A21N/RM MTN WAVE +/-10-20KT ZDVWC-29
- Report
- a routine report filed through PUB
- Where
- over PUB
- Time
- 00:24 UTC
- Height
- at 31,000 ft
- Aircraft
- A21N
- Remarks
- mountain wave +/-10-20KT ZDVWC-29
- CL35 at 43,000 ft, 46 nm southwest, 7:21 pm CDT (00:21 UTC): remarks: mtw +/-300FT zdvwc. At the destination end, 46 nm southwest of the line.
as filed, and in English
PUB UA /OV PUB250040/TM 0021/FL430/TP CL35/RM MTW +/-300FT ZDVWC
- Report
- a routine report filed through PUB
- Where
- 40 nm west (250°) of PUB
- Time
- 00:21 UTC
- Height
- at 43,000 ft
- Aircraft
- CL35
- Remarks
- mtw +/-300FT zdvwc
- B737 at 25,000 ft, 11 nm west, 7:29 pm CDT (00:29 UTC): light rime icing, 0 °C, remarks: during the climb ZDVWC-29. At the destination end, 11 nm west of the line.
as filed, and in English
COS UA /OV BRK242015/TM 0029/FL250/TP B737/SK TOP280/TA 00/IC LGT RIME/RM DURC ZDVWC-29
- Report
- a routine report filed through COS
- Where
- 15 nm southwest (242°) of BRK
- Time
- 00:29 UTC
- Height
- at 25,000 ft
- Aircraft
- B737
- Sky
- TOP280
- Temperature
- 0 °C
- Icing
- light rime
- Remarks
- during the climb ZDVWC-29
- B737 at 14,000 ft, 36 nm north, 7:20 pm CDT (00:20 UTC): light to moderate turbulence, remarks: light to moderate from 14,000 ft to 16,000 ft occn light above 16,000 ft. At the destination end, 36 nm north of the line.
as filed, and in English
DEN UA /OV DEN170025/TM 0020/FL140/TP B737/TB LGT-MOD/RM LGT-MOD 140-160 OCCN LGT ABOVE 160
- Report
- a routine report filed through DEN
- Where
- 25 nm south (170°) of DEN
- Time
- 00:20 UTC
- Height
- at 14,000 ft
- Aircraft
- B737
- Turbulence
- light to moderate
- Remarks
- light to moderate from 14,000 ft to 16,000 ft occn light above 16,000 ft
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 5 forecast points nearest it (CLL, DAL, SPS, AMA, 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 |
|---|---|---|---|---|---|---|
| 4,500 ft | 190° at 23 kt | −16 kt | 136 kt | 5 h 10 min | 12:04 am MDT (06:04 UTC) | |
| 6,500 ft | 200° at 23 kt | −13 kt | 15 °C | 133 kt | 5 h 17 min | 12:11 am MDT (06:11 UTC) |
| 8,500 ft | 210° at 22 kt | −6 kt | 14 °C | 126 kt | 5 h 35 min | 12:29 am MDT (06:29 UTC) |
| 10,500 ft | 220° at 22 kt | −4 kt | 11 °C | 124 kt | 5 h 40 min | 12:34 am MDT (06:34 UTC) |
| 12,500 ft | 220° at 23 kt | −3 kt | 7 °C | 123 kt | 5 h 43 min | 12:37 am MDT (06:37 UTC) |
| 14,500 ft | 230° at 24 kt | 0 | 2 °C | 120 kt | 5 h 52 min | 12:46 am MDT (06:46 UTC) |
| 16,500 ft | 240° at 25 kt | +3 kt | -3 °C | 117 kt | 6 h 01 min | 12:55 am MDT (06:55 UTC) |
| 18,000 ft FL180 | 240° at 26 kt | +5 kt | -6 °C | 115 kt | 6 h 07 min | 1:01 am MDT (07:01 UTC) |
| 24,000 ft FL240 | 240° at 30 kt | +7 kt | -16 °C | 113 kt | 6 h 13 min | 1:07 am MDT (07:07 UTC) |
| 30,000 ft FL300 | 250° at 45 kt | +18 kt | -29 °C | 102 kt | 6 h 54 min | 1:48 am MDT (07:48 UTC) |
| 34,000 ft FL340 | 260° at 46 kt | +22 kt | -38 °C | 98 kt | 7 h 10 min | 2:04 am MDT (08:04 UTC) |
| 39,000 ft FL390 | 270° at 38 kt | +23 kt | -50 °C | 97 kt | 7 h 15 min | 2:09 am MDT (08:09 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| CLL | used from 0 nm out; 41 nm from the line | 160/18 | 190/18 16° | 200/19 12° | 220/14 7° | 260/18 -5° | 250/20 -13° | 290/29 -29° | 290/31 -40° | 300/22 -53° |
| DAL | used from 149 nm out; 49 nm from the line | 180/21 | 190/24 15° | 230/20 12° | 220/23 8° | 240/22 -5° | 230/18 -15° | 280/33 -29° | 280/36 -39° | 300/33 -52° |
| SPS | used from 248 nm out; 33 nm from the line | 180/26 | 200/25 16° | 220/19 13° | 220/20 9° | 230/26 -5° | 230/34 -15° | 260/37 -28° | 270/42 -39° | 280/40 -51° |
| AMA | used from 347 nm out; 87 nm from the line | 190/28 | 220/26 14° | 230/27 7° | 250/24 -6° | 250/32 -16° | 240/51 -28° | 250/52 -38° | 250/51 -50° | |
| PUB | used from 545 nm out; 106 nm from the line | 210/24 16° | 210/28 8° | 230/43 -8° | 240/42 -21° | 240/77 -30° | 240/72 -36° | 250/51 -47° |
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 |
|---|---|---|---|---|---|---|---|
| IAH Houston, TX | departure | VFR Sky: a broken layer at 25,000 feet | from the east-southeast (120°) at 11 knots | 10+ mi | 25,000 ft | 95 ft | 6:53 pm CDT (23:53 UTC) |
| CXO Houston, TX | 20 nm out, 11 nm northeast of the line, tower | VFR | from the southeast (140°) at 9 knots | 10+ mi | none | 244 ft | 23:53 UTC |
| CNW Waco, TX | 129 nm out, 8 nm west of the line, tower | VFR | from the south-southeast (160°) at 9 knots | 10+ mi | none | 470 ft | 23:55 UTC |
| FWS Fort Worth, TX | 188 nm out, 20 nm northeast of the line, tower | VFR | from the south (170°) at 8 knots | 10+ mi | none | 700 ft | 23:46 UTC |
| MWL Mineral Wells, TX | 218 nm out, 1 nm southwest of the line | VFR | from the south-southeast (160°) at 9 knots | 10+ mi | none | 973 ft | 23:53 UTC |
| FDR Frederick, OK | 317 nm out, 25 nm northeast of the line | VFR | from the south (170°) at 13 knots, gusting to 26 | 10+ mi | none | 1,258 ft | 23:53 UTC |
| CDS Childress, TX | 366 nm out, 21 nm southwest of the line | VFR | from the south (180°) at 10 knots | 10+ mi | none | 1,953 ft | 23:53 UTC |
| PPA Pampa, TX | 446 nm out, 4 nm southeast of the line | VFR | from the south (190°) at 11 knots | 10+ mi | none | 3,245 ft | 00:30 UTC |
| GUY Guymon, OK | 505 nm out, 24 nm northeast of the line | VFR | from the south (190°) at 15 knots, gusting to 25 | 10+ mi | none | 3,125 ft | 23:53 UTC |
| PUB Pueblo, CO | 673 nm out, 15 nm southwest of the line, tower | marginal VFR Sky: a few clouds at 10,000 feet, a broken layer at 12,000 feet Weather: haze | from the west-southwest (240°) at 36 knots, gusting to 52 | 3 mi | 12,000 ft | 4,729 ft | 23:53 UTC |
| COS Colorado Springs, CO | destination | VFR Sky: scattered clouds at 10,000 feet, a broken layer at 14,000 feet, a broken layer at 24,000 feet | from the south-southwest (210°) at 13 knots | 10+ mi | 14,000 ft | 6,187 ft | 5:54 pm MDT (23:54 UTC) |
The highest airport on this list sits at 6,187 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, 12:04 am MDT (06:04 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 Sun 6:00 pm MDT (00:00 UTC): wind from the south-southwest at 20 knots, gusting to 32, visibility more than 6 miles, a few clouds at 10,000 feet, scattered clouds at 20,000 feet
- From Sun 9:00 pm MDT (03:00 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
The forecast for IAH, the departure
- From Sun 7:00 pm CDT (00:00 UTC): wind from the south-southeast at 12 knots, visibility more than 6 miles, a few clouds at 25,000 feet
- From Sun 9:00 pm CDT (02:00 UTC): wind from the south-southeast at 7 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
- From Mon 4:00 am CDT (09:00 UTC): wind from the east-southeast at 4 knots, visibility more than 6 miles, scattered clouds at 2,500 feet, scattered clouds at 25,000 feet
- From Mon 12:00 pm CDT (17:00 UTC): wind from the southeast at 11 knots, visibility more than 6 miles, scattered clouds at 3,500 feet, a broken layer at 25,000 feet
- 30% chance between Mon 1:00 pm CDT (18:00 UTC) and 5:00 pm CDT (22:00 UTC): light rain showers
Temporary flight restrictions on the line or within 25 nm of it
- 6/8770 COLORADO SPRINGS, CO, Saturday, October 10, 2026 through Monday, October 12, 2026 UTC 15 nm from the route, at the destination end · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 12 October · ZDV
Daylight
Sunset at IAH 6:55 pm CDT (23:55 UTC), at COS 6:25 pm MDT (00:25 UTC) (civil twilight ends 6:51 pm MDT (00:51 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: George Bush Intcntl/Houston Airport, City Of Colorado Springs Municipal.
