Plan a flight · Tue 2:06 am HST (12:06 UTC)

Daniel K Inouye International to City Of Colorado Springs Municipal HNL → COS

2,913 nautical miles (3,352 statute miles) northeast on a straight line, true course 056°, about 045° magnetic at the departure end (variation 11E). At 120 knots that is 22 h 35 min at the quickest height in today's winds (24,000 ft, a 9-knot tailwind), arriving about 4:41 am MDT (10:41 UTC), after sunset at the destination. Right now HNL is VFR, wind calm; COS is VFR, wind from the north-northeast (020°) at 4 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: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the route from 2194 to 2623 nm out.
AIRMET TANGO 1W: moderate turbulence below 18,000 ft from 14,000 ft to 18,000 ft. Over the route from 2224 to 2364 nm out.
AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 10,000 ft. Near the route, 2234 nm along the route.
AIRMET ZULU 1C: moderate icing from 7,000 ft to 16,000 ft. Over the route from 2304 to 2504 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 2404 to 2534 nm out.
AIRMET SIERRA 11E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 2414 to 2514 nm out.
AIRMET ZULU 1C: moderate icing up to 21,000 ft. Over the route from 2524 to 2823 nm out.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the last 389 nm of the route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 2553 to 2863 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 24,000 ft to 36,000 ft. Over the route from 2633 to 2793 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 2713 to 2833 nm out.

Turbulence AIRMET in force: moderate turbulence from 18,000 ft to 39,000 ft, over the route from 2194 to 2623 nm out; AIRMET in force: moderate turbulence from 14,000 ft to 18,000 ft, over the route from 2224 to 2364 nm out. 2 pilot reports of turbulence near the line in the last three hours: light chop turbulence, at 31,000 ft, 18 nm south, 12:31 am HST (10:31 UTC); light chop turbulence, at 13,000 ft, 32 nm north, 12:32 am HST (10:32 UTC). The government's turbulence forecast map ↗

Icing AIRMET in force: moderate icing from 7,000 ft to 16,000 ft, over the route from 2304 to 2504 nm out; AIRMET in force: moderate icing up to 21,000 ft, over the route from 2524 to 2823 nm out. 1 pilot report of icing near the line in the last three hours: light rime icing, at 13,000 ft, 32 nm north, 12:32 am HST (10:32 UTC). The freezing level is about 15,500 ft (from the winds-aloft temperatures), so icing is possible in cloud above that. The government's icing forecast map ↗

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 HNL.

Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first

UAL1685 at 37,000 ft, 12 nm southeast, 11:51 pm HST (09:51 UTC): -46 °C, wind 250° at 25 knots. 289 nm along the route, 12 nm southeast of the line.
as filed, and in English
```
ARP UAL1685 2347N 15322W 0951 F370 MS46 250/025KT
```
Report
a routine report filed through ARP
UAL1750 at 34,000 ft, 12 nm southeast, 11:11 pm HST (09:11 UTC): -40 °C, wind 260° at 20 knots. 289 nm along the route, 12 nm southeast of the line.
as filed, and in English
```
ARP UAL1750 2347N 15322W 0911 F340 MS40 260/020KT
```
Report
a routine report filed through ARP
UAL1724 at 33,000 ft, 4 nm southwest, 12:42 am HST (10:42 UTC): -36 °C, wind 195° at 25 knots. 688 nm along the route, 4 nm southwest of the line.
as filed, and in English
```
ARP UAL1724 2714N 14713W 1042 F330 MS36 195/025KT
```
Report
a routine report filed through ARP
UAL1685 at 37,000 ft, 4 nm southwest, 12:40 am HST (10:40 UTC): -46 °C, wind 220° at 25 knots. 688 nm along the route, 4 nm southwest of the line.
as filed, and in English
```
ARP UAL1685 2714N 14713W 1040 F370 MS46 220/025KT
```
Report
a routine report filed through ARP
UAL1750 at 34,000 ft, 4 nm southwest, 12:00 am HST (10:00 UTC): -39 °C, wind 200° at 25 knots. 688 nm along the route, 4 nm southwest of the line.
as filed, and in English
```
ARP UAL1750 2714N 14713W 1000 F340 MS39 200/025KT
```
Report
a routine report filed through ARP
UAL1685 at 37,000 ft, 7 nm northwest, 1:28 am HST (11:28 UTC): -47 °C, wind 260° at 25 knots. 1077 nm along the route, 7 nm northwest of the line.
as filed, and in English
```
ARP UAL1685 3024N 14042W 1128 F370 MS47 260/025KT
```
Report
a routine report filed through ARP
UAL1750 at 37,000 ft, 7 nm northwest, 12:49 am HST (10:49 UTC): -48 °C, wind 270° at 50 knots. 1077 nm along the route, 7 nm northwest of the line.
as filed, and in English
```
ARP UAL1750 3024N 14042W 1049 F370 MS48 270/050KT
```
Report
a routine report filed through ARP
UAL1750 at 37,000 ft, 17 nm north, 1:40 am HST (11:40 UTC): -50 °C, wind 315° at 40 knots. 1476 nm along the route, 17 nm north of the line.
as filed, and in English
```
ARP UAL1750 3317N 13337W 1140 F370 MS50 315/040KT
```
Report
a routine report filed through ARP
B753 at 31,000 ft, 18 nm south, 12:31 am HST (10:31 UTC): light chop turbulence, remarks: ZDVWC-34. 2623 nm along the route, 18 nm south of the line.
as filed, and in English
```
CNY UA /OV HVE170030/TM 1031/FL310/TP B753/TB LGT CHOP/RM ZDVWC-34
```
Report
a routine report filed through CNY
Where
30 nm south (170°) of HVE
Time
10:31 UTC
Height
at 31,000 ft
Aircraft
B753
Turbulence
light chop
Remarks
ZDVWC-34
EPIC at 13,000 ft, 32 nm north, 12:32 am HST (10:32 UTC): light chop turbulence, light rime icing, -5 °C, remarks: zdvwc. 2763 nm along the route, 32 nm north of the line.
as filed, and in English
```
MTJ UA /OV MTJ342034/TM 1032/FL130/TP EPIC/TA M05/TB OCNL LGT CHOP/IC LGT RIME/RM ZDVWC
```
Report
a routine report filed through MTJ
Where
34 nm north (342°) of MTJ
Time
10:32 UTC
Height
at 13,000 ft
Aircraft
EPIC
Temperature
−5 °C
Turbulence
occasional light chop
Icing
light rime
Remarks
zdvwc
B763 at 23,000 ft, 31 nm north, 12:27 am HST (10:27 UTC): no turbulence, remarks: zdvwc. At the destination end, 31 nm north of the line.
as filed, and in English
```
DEN UA /OV DEN232069/TM 1027/FL230/TP B763/TB NEG/RM ZDVWC
```
Report
a routine report filed through DEN
Where
69 nm southwest (232°) of DEN
Time
10:27 UTC
Height
at 23,000 ft
Aircraft
B763
Turbulence
none
Remarks
zdvwc

Winds aloft along the route, and the time en route the forecast for use 08:00–15:00 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 3 forecast points nearest it (HNL, OGG, ITO). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
3,500 ft	100° at 16 kt	+14 kt		106 kt	27 h 29 min	9:35 am MDT (15:35 UTC)
5,500 ft	120° at 17 kt	+11 kt		109 kt	26 h 43 min	8:49 am MDT (14:49 UTC)
7,500 ft	120° at 15 kt	+9 kt	12 °C	111 kt	26 h 15 min	8:21 am MDT (14:21 UTC)
9,500 ft	120° at 13 kt	+8 kt	9 °C	112 kt	26 h 01 min	8:07 am MDT (14:07 UTC)
11,500 ft	130° at 11 kt	+6 kt	6 °C	114 kt	25 h 33 min	7:39 am MDT (13:39 UTC)
13,500 ft	140° at 8 kt	+3 kt	2 °C	117 kt	24 h 54 min	7:00 am MDT (13:00 UTC)
15,500 ft	150° at 2 kt	0	0 °C	120 kt	24 h 16 min	6:22 am MDT (12:22 UTC)
17,500 ft	340° at 13 kt	−1 kt	-2 °C	121 kt	24 h 04 min	6:10 am MDT (12:10 UTC)
18,000 ft FL180	340° at 17 kt	−1 kt	-3 °C	121 kt	24 h 04 min	6:10 am MDT (12:10 UTC)
24,000 ft FL240	300° at 16 kt	−9 kt	-15 °C	129 kt	22 h 35 min	4:41 am MDT (10:41 UTC)

Based on data from the 13th at 06:00 UTC; valid on the 13th at 12:00 UTC for use 08:00 to 15:00 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	1,000	1,500	2,000	3,000	6,000	9,000	12,000	15,000	18,000	24,000
HNL	used from 0 nm out; 25 nm from the line	080/13	090/16	100/18	100/17	110/15 15°	090/15 10°	030/16 5°	360/13 3°	320/12 -3°	280/19 -17°
OGG	used from 50 nm out; 69 nm from the line	080/16	080/19	090/20	090/21	090/16 15°	090/11 10°	130/14 5°	140/7 2°	300/8 -4°	280/20 -16°
ITO	used from 499 nm out; 472 nm from the line	L/V	080/5	080/8	090/15	130/18 14°	120/14 10°	130/10 5°	160/6 0°	340/19 -3°	310/16 -15°

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
HNL Honolulu, HI	departure	VFR Sky: a few clouds at 3,000 feet	calm	10+ mi	none	13 ft	1:53 am HST (11:53 UTC)
FAT Fresno, CA	2194 nm out, 4 nm west of the line, tower	VFR	from the north-northwest (340°) at 3 knots	10+ mi	none	335 ft	11:53 UTC
CDC Cedar City, UT	2514 nm out, 13 nm south of the line	IFR Sky: overcast at 800 feet	from the north (350°) at 5 knots	10+ mi	800 ft	5,622 ft	11:53 UTC
MTJ Montrose, CO	2763 nm out, 2 nm southwest of the line	VFR Sky: a few clouds at 6,000 feet, a few clouds at 7,500 feet	from the south-southwest (200°) at 9 knots, gusting to 29	10+ mi	none	5,758 ft	11:53 UTC
COS Colorado Springs, CO	destination	VFR Sky: a few clouds at 11,000 feet, a few clouds at 15,000 feet	from the north-northeast (020°) at 4 knots	10+ mi	none	6,187 ft	5:54 am MDT (11:54 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.

The codes as issued, and in English, for every airport in the table

HNL Honolulu, HI