Cincinnati/Northern Kentucky International to Boise Air Trml/Gowen Field CVG → BOI
1,440 nautical miles (1,657 statute miles) west on a straight line, true course 291°, about 297° magnetic at the departure end (variation 6W). At 120 knots that is 13 h 35 min at the quickest height in today's winds (8,500 ft, a 14-knot headwind), arriving about 7:13 pm MDT (01:13 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: 403 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 SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the first 100 nm of the route.
- AIRMET TANGO 2W: 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 300 to 700 nm out.
- AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 670 to 1400 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 850 to 1020 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the route from 930 to 1010 nm out.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Near the route, 1000 nm along the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 1060 to 1400 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1170 to 1380 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 CVG.
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 08:00–15:00 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 11 forecast points nearest it (CVG, IND, SPI, BRL, DSM, OMA, ONL, BFF, LND, PIH, BOI). 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 | 260° at 22 kt | +19 kt | 15 °C | 101 kt | 14 h 15 min | 7:53 pm MDT (01:53 UTC) |
| 6,500 ft | 260° at 19 kt | +17 kt | 16 °C | 103 kt | 13 h 59 min | 7:37 pm MDT (01:37 UTC) |
| 8,500 ft | 250° at 17 kt | +14 kt | 10 °C | 106 kt | 13 h 35 min | 7:13 pm MDT (01:13 UTC) |
| 10,500 ft | 240° at 20 kt | +15 kt | 5 °C | 105 kt | 13 h 43 min | 7:21 pm MDT (01:21 UTC) |
| 12,500 ft | 230° at 23 kt | +16 kt | 2 °C | 104 kt | 13 h 51 min | 7:29 pm MDT (01:29 UTC) |
| 14,500 ft | 230° at 26 kt | +18 kt | -3 °C | 102 kt | 14 h 07 min | 7:45 pm MDT (01:45 UTC) |
| 16,500 ft | 230° at 28 kt | +20 kt | -7 °C | 100 kt | 14 h 24 min | 8:02 pm MDT (02:02 UTC) |
| 18,000 ft FL180 | 230° at 30 kt | +21 kt | -11 °C | 99 kt | 14 h 33 min | 8:11 pm MDT (02:11 UTC) |
| 24,000 ft FL240 | 230° at 37 kt | +27 kt | -22 °C | 93 kt | 15 h 29 min | 9:07 pm MDT (03:07 UTC) |
| 30,000 ft FL300 | 240° at 46 kt | +38 kt | -33 °C | 82 kt | 17 h 34 min | 11:12 pm MDT (05:12 UTC) |
| 34,000 ft FL340 | 250° at 50 kt | +45 kt | -37 °C | 75 kt | 19 h 12 min | 12:50 am MDT (06:50 UTC) |
| 39,000 ft FL390 | 260° at 49 kt | +47 kt | -46 °C | 73 kt | 19 h 44 min | 1:22 am MDT (07:22 UTC) |
Based on data from the 12th at 06:00 UTC; valid on the 12th 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 | 3,000 | 6,000 | 9,000 | 12,000 | 18,000 | 24,000 | 30,000 | 34,000 | 39,000 |
|---|---|---|---|---|---|---|---|---|---|---|
| CVG | used from 0 nm out; 25 nm from the line | 300/19 | 310/23 15° | 320/20 9° | 310/18 3° | 300/26 -6° | 290/36 -19° | 310/32 -34° | 310/53 -43° | 310/61 -51° |
| IND | used from 50 nm out; 15 nm from the line | 270/22 | 290/19 15° | 270/19 8° | 270/18 4° | 290/28 -7° | 280/35 -20° | 270/37 -34° | 300/51 -42° | 300/61 -51° |
| SPI | used from 150 nm out; 68 nm from the line | 260/28 | 250/22 15° | 250/14 9° | 260/20 6° | 280/27 -7° | 280/34 -19° | 280/48 -32° | 280/59 -41° | 300/60 -49° |
| BRL | used from 250 nm out; 40 nm from the line | 250/32 | 250/19 17° | 260/15 11° | 270/16 3° | 290/23 -7° | 260/42 -20° | 270/52 -34° | 280/63 -39° | 290/64 -48° |
| DSM | used from 400 nm out; 18 nm from the line | 250/47 | 260/25 20° | 240/19 11° | 240/31 5° | 250/26 -9° | 260/38 -20° | 260/47 -34° | 270/58 -37° | 270/61 -47° |
| OMA | used from 500 nm out; 26 nm from the line | 230/47 | 240/33 21° | 230/22 13° | 220/27 5° | 240/35 -8° | 250/43 -21° | 260/47 -33° | 260/59 -36° | 270/58 -46° |
| ONL | used from 600 nm out; 46 nm from the line | 250/31 22° | 230/27 16° | 220/25 8° | 230/25 -9° | 220/29 -22° | 250/42 -33° | 250/48 -36° | 250/52 -46° | |
| BFF | used from 800 nm out; 79 nm from the line | 280/28 | 260/39 11° | 240/34 5° | 210/38 -11° | 210/52 -22° | 230/61 -31° | 230/61 -36° | 240/56 -45° | |
| LND | used from 1000 nm out; 91 nm from the line | 240/10 3° | 240/30 0° | 220/42 -13° | 230/52 -23° | 220/54 -33° | 220/52 -36° | 220/53 -44° | ||
| PIH | used from 1200 nm out; 66 nm from the line | 070/8 | 150/19 1° | 180/32 -4° | 210/44 -17° | 210/37 -28° | 210/74 -31° | 220/68 -35° | 220/60 -43° | |
| BOI | used from 1350 nm out; 65 nm from the line | 320/11 1° | 280/8 -5° | 220/14 -11° | 200/60 -19° | 190/66 -31° | 210/46 -32° | 220/50 -33° | 220/43 -39° |
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 |
|---|---|---|---|---|---|---|---|
| CVG Covington, KY | departure | no report just now | 896 ft | ||||
| BAK Columbus, IN | 60 nm out, 8 nm south of the line, tower | no report just now | 656 ft | ||||
| CMI Champaign/Urbana, IL | 180 nm out, 3 nm southeast of the line, tower | no report just now | 754 ft | ||||
| OTM Ottumwa, IA | 380 nm out, 4 nm northeast of the line | no report just now | 845 ft | ||||
| DSM Des Moines, IA | 440 nm out, 13 nm northeast of the line, tower | no report just now | 957 ft | ||||
| OFK Norfolk, NE | 610 nm out, 2 nm southeast of the line | no report just now | 1,572 ft | ||||
| CDR Chadron, NE | 860 nm out, 4 nm northwest of the line | no report just now | 3,297 ft | ||||
| LSK Lusk, WY | 920 nm out, 12 nm south of the line | no report just now | 4,966 ft | ||||
| CPR Casper, WY | 1010 nm out, 15 nm south of the line, tower | no report just now | 5,344 ft | ||||
| IDA Idaho Falls, ID | 1260 nm out, 1 nm northeast of the line, tower | no report just now | 4,743 ft | ||||
| SUN Hailey, ID | 1360 nm out, 5 nm southeast of the line, tower | no report just now | 5,319 ft | ||||
| BOI Boise, ID | destination | no report just now | 2,871 ft |
The highest airport on this list sits at 5,344 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At BOI when you get there the forecast at the estimated arrival, 7:13 pm MDT (01:13 UTC)
BOI has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/8029 Cincinnati, OH, Friday, October 9, 2026 through Monday, October 12, 2026 Local on the route, at the departure end · a VIP movement · until 12 October · ZID
Daylight
Sunset at CVG 7:04 pm EDT (23:04 UTC), at BOI 7:05 pm MDT (01:05 UTC) (civil twilight ends 7:33 pm MDT (01:33 UTC)). At 120 knots the arrival at BOI is after sunset there (7:06 pm MDT (01:06 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: Cincinnati/Northern Kentucky International, Boise Air Trml/Gowen Field.