Ellison Onizuka Kona International AT Keahole to Chicago O'Hare International KOA → ORD
3,656 nautical miles (4,207 statute miles) northeast on a straight line, true course 052°, about 041° magnetic at the departure end (variation 11E). At 120 knots that is 30 h 13 min at the quickest height in today's winds (7,500 ft, a 1-knot tailwind), arriving about 1:40 am CDT (06:40 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: 32 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 W72W: thunderstorms (a convective SIGMET) up to 30,000 ft, moving from the southwest at 20 knots, until 3:55 pm HST (01:55 UTC). Over the route from 2248 to 2307 nm out.
as issued
WSUS33 KKCI 112355 MKCW WST 112355 CONVECTIVE SIGMET 72W VALID UNTIL 0155Z NV FROM 60SSW BAM-60W ELY-OAL-40WNW OAL-60SSW BAM AREA TS MOV FROM 23020KT. TOPS TO FL300.
- SIGMET W71W: thunderstorms (a convective SIGMET) up to 27,000 ft, moving from the south at 40 knots, until 3:55 pm HST (01:55 UTC). Over the route from 2517 to 2617 nm out.
as issued
WSUS33 KKCI 112355 MKCW WST 112355 CONVECTIVE SIGMET 71W VALID UNTIL 0155Z WY UT ID FROM 40S DBS-40WNW BPI-30WSW MTU-30SSW DTA-30SE TWF-40S DBS AREA EMBD TS MOV FROM 20040KT. TOPS TO FL270.
- SIGMET W68W: thunderstorms (a convective SIGMET) up to 36,000 ft, moving from the southwest at 40 knots, until 3:55 pm HST (01:55 UTC). Over the route from 2747 to 2747 nm out.
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 2W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 1928 to 1968 nm out.
- AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Over the route from 2178 to 2367 nm out.
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 2307 to 2677 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 2357 to 3027 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 2357 to 2837 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 2477 to 2907 nm out.
- 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 route from 2547 to 2817 nm out.
- AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 2707 to 2747 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 KOA.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
Not fetched just now.
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 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 2 forecast points nearest it (KOA, 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 | 070° at 7 kt | +7 kt | 113 kt | 32 h 21 min | 3:48 am CDT (08:48 UTC) | |
| 5,500 ft | 350° at 6 kt | +2 kt | 118 kt | 30 h 59 min | 2:26 am CDT (07:26 UTC) | |
| 7,500 ft | 330° at 11 kt | −1 kt | 11 °C | 121 kt | 30 h 13 min | 1:40 am CDT (06:40 UTC) |
| 9,500 ft | 330° at 17 kt | −1 kt | 9 °C | 121 kt | 30 h 13 min | 1:40 am CDT (06:40 UTC) |
| 11,500 ft | 350° at 20 kt | +3 kt | 7 °C | 117 kt | 31 h 15 min | 2:42 am CDT (07:42 UTC) |
| 13,500 ft | 350° at 27 kt | +6 kt | 6 °C | 114 kt | 32 h 04 min | 3:31 am CDT (08:31 UTC) |
| 15,500 ft | 360° at 29 kt | +9 kt | 4 °C | 111 kt | 32 h 56 min | 4:23 am CDT (09:23 UTC) |
| 17,500 ft | 030° at 21 kt | +16 kt | -1 °C | 104 kt | 35 h 09 min | 6:36 am CDT (11:36 UTC) |
| 18,000 ft FL180 | 040° at 21 kt | +18 kt | -2 °C | 102 kt | 35 h 51 min | 7:18 am CDT (12:18 UTC) |
| 24,000 ft FL240 | 060° at 17 kt | +17 kt | -14 °C | 103 kt | 35 h 30 min | 6:57 am CDT (11:57 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 | 1,000 | 1,500 | 2,000 | 3,000 | 6,000 | 9,000 | 12,000 | 15,000 | 18,000 | 24,000 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| KOA | used from 0 nm out; 25 nm from the line | L/V | L/V | L/V | 260/5 | L/V 16° | 360/15 11° | 360/34 7° | 360/34 4° | 040/21 -1° | 050/18 -15° |
| ITO | used from 50 nm out; 47 nm from the line | 070/7 | 070/8 | 070/7 | 080/9 | 340/7 12° | 330/16 10° | 350/21 6° | 350/32 5° | 040/21 -2° | 060/17 -14° |
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 |
|---|---|---|---|---|---|---|---|
| KOA Kailua-Kona, HI | departure | no report just now | 50 ft | ||||
| MUE Kamuela, HI | 30 nm out, 4 nm southwest of the line | no report just now | 2,671 ft | ||||
| RHV San Jose, CA | 2078 nm out, 5 nm northwest of the line, tower | no report just now | 135 ft | ||||
| ELY Ely, NV | 2427 nm out, 10 nm northwest of the line | no report just now | 6,259 ft | ||||
| CYS Cheyenne, WY | 2897 nm out, 11 nm north of the line, tower | no report just now | 6,159 ft | ||||
| TQE Tekamah, NE | 3286 nm out, 2 nm south of the line | no report just now | 1,026 ft | ||||
| CID Cedar Rapids, IA | 3486 nm out, 5 nm south of the line, tower | no report just now | 869 ft | ||||
| ORD Chicago, IL | destination | no report just now | 680 ft |
The highest airport on this list sits at 6,259 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At ORD when you get there the forecast at the estimated arrival, 1:40 am CDT (06:40 UTC)
ORD has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/7231 Santa Clara, CA, Sunday, October 11, 2026 through Monday, October 12, 2026 UTC 9 nm from the route, 2068 nm along the route · drones kept away from a public gathering · until 12 October · ZOA
- 6/7094 45NM NE MERCED, CA, Sunday, October 4, 2026 through Tuesday, October 20, 2026 UTC 9 nm from the route, 2178 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 20 October · ZOA
Daylight
Sunset at KOA 6:03 pm HST (04:03 UTC), at ORD 6:15 pm CDT (23:15 UTC) (civil twilight ends 6:43 pm CDT (23:43 UTC)). At 120 knots the arrival at ORD is before sunrise there (7:01 am CDT (12:01 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: Ellison Onizuka Kona International AT Keahole, Chicago O'Hare International.