Boise Air Trml/Gowen Field to Nashville International BOI → BNA
1,425 nautical miles (1,639 statute miles) east on a straight line, true course 098°, about 085° magnetic at the departure end (variation 13E). At 120 knots that is 8 h 41 min at the quickest height in today's winds (39,000 ft, a 44-knot tailwind), arriving about 11:48 am CDT (16:48 UTC). 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: 11 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 first 90 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 40 to 319 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 70 to 379 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 159 to 199 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 309 to 558 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 42,000 ft. Over the route from 339 to 568 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 379 to 548 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 389 to 438 nm out.
- AIRMET TANGO 3W: 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 667 to 1136 nm out.
- AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist, fog). Over the last 0 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 BOI.
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 02:00–09:00 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 11 forecast points nearest it (BOI, PIH, LND, BFF, GLD, GRI, SLN, MKC, COU, CGI, BNA). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 5,500 ft | 230° at 20 kt | −10 kt | 13 °C | 130 kt | 10 h 58 min | 2:05 pm CDT (19:05 UTC) |
| 7,500 ft | 230° at 19 kt | −10 kt | 12 °C | 130 kt | 10 h 58 min | 2:05 pm CDT (19:05 UTC) |
| 9,500 ft | 240° at 18 kt | −12 kt | 8 °C | 132 kt | 10 h 48 min | 1:55 pm CDT (18:55 UTC) |
| 11,500 ft | 230° at 17 kt | −11 kt | 5 °C | 131 kt | 10 h 53 min | 2:00 pm CDT (19:00 UTC) |
| 13,500 ft | 230° at 20 kt | −12 kt | 0 °C | 132 kt | 10 h 48 min | 1:55 pm CDT (18:55 UTC) |
| 15,500 ft | 230° at 23 kt | −15 kt | -4 °C | 135 kt | 10 h 33 min | 1:40 pm CDT (18:40 UTC) |
| 17,500 ft | 240° at 26 kt | −18 kt | -8 °C | 138 kt | 10 h 20 min | 1:27 pm CDT (18:27 UTC) |
| 18,000 ft FL180 | 240° at 27 kt | −18 kt | -9 °C | 138 kt | 10 h 20 min | 1:27 pm CDT (18:27 UTC) |
| 24,000 ft FL240 | 230° at 35 kt | −21 kt | -21 °C | 141 kt | 10 h 06 min | 1:13 pm CDT (18:13 UTC) |
| 30,000 ft FL300 | 240° at 43 kt | −32 kt | -31 °C | 152 kt | 9 h 22 min | 12:29 pm CDT (17:29 UTC) |
| 34,000 ft FL340 | 250° at 50 kt | −41 kt | -38 °C | 161 kt | 8 h 51 min | 11:58 am CDT (16:58 UTC) |
| 39,000 ft FL390 | 260° at 48 kt | −44 kt | -47 °C | 164 kt | 8 h 41 min | 11:48 am CDT (16:48 UTC) |
Based on data from the 12th at 00:00 UTC; valid on the 12th at 06:00 UTC for use 02:00 to 09:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BOI | used from 0 nm out; 25 nm from the line | 300/7 2° | 280/5 -4° | 210/16 -9° | 210/60 -20° | 210/75 -29° | 210/63 -32° | 220/64 -32° | 220/54 -39° | |
| PIH | used from 100 nm out; 40 nm from the line | L/V | 240/13 1° | 240/15 -3° | 210/42 -15° | 200/70 -25° | 220/74 -29° | 220/71 -36° | 220/62 -43° | |
| LND | used from 249 nm out; 59 nm from the line | 200/23 6° | 220/31 1° | 220/39 -11° | 230/39 -23° | 220/51 -28° | 220/66 -37° | 230/68 -45° | ||
| BFF | used from 448 nm out; 94 nm from the line | 180/28 | 220/33 15° | 210/31 7° | 230/32 -9° | 220/41 -21° | 220/40 -33° | 240/47 -36° | 250/54 -46° | |
| GLD | used from 648 nm out; 98 nm from the line | 230/49 | 230/42 15° | 220/26 8° | 240/18 -7° | 230/27 -21° | 240/62 -30° | 240/61 -35° | 250/57 -47° | |
| GRI | used from 697 nm out; 97 nm from the line | 230/35 21° | 230/23 13° | 220/20 7° | 240/25 -8° | 240/37 -20° | 250/49 -33° | 260/57 -38° | 260/58 -47° | |
| SLN | used from 847 nm out; 68 nm from the line | 210/53 | 230/41 20° | 240/26 14° | 230/16 8° | 240/25 -7° | 240/35 -19° | 250/61 -30° | 260/65 -38° | 260/56 -49° |
| MKC | used from 946 nm out; 37 nm from the line | 220/44 | 250/28 18° | 250/18 13° | 240/12 6° | 280/24 -6° | 240/34 -18° | 260/47 -30° | 260/51 -40° | 270/58 -50° |
| COU | used from 1046 nm out; 55 nm from the line | 230/31 | 230/30 15° | 260/16 11° | 270/14 6° | 260/24 -6° | 270/27 -18° | 270/37 -32° | 280/49 -41° | 290/56 -51° |
| CGI | used from 1195 nm out; 50 nm from the line | 240/20 | 270/15 15° | 280/15 11° | 300/13 6° | 290/20 -6° | 280/24 -18° | 300/34 -32° | 300/47 -41° | 310/49 -51° |
| BNA | used from 1345 nm out; 55 nm from the line | 310/20 | 340/20 17° | 330/24 10° | 340/22 5° | 330/26 -6° | 340/29 -18° | 330/52 -33° | 320/62 -41° | 340/45 -50° |
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 |
|---|---|---|---|---|---|---|---|
| BOI Boise, ID | departure | no report just now | 2,871 ft | ||||
| SUN Hailey, ID | 80 nm out, 10 nm northeast of the line, tower | no report just now | 5,319 ft | ||||
| PIH Pocatello, ID | 159 nm out, 13 nm south of the line, tower | no report just now | 4,451 ft | ||||
| PNA Pinedale, WY | 289 nm out, 7 nm northwest of the line | no report just now | 7,096 ft | ||||
| EAN Wheatland, WY | 508 nm out, 15 nm north of the line | no report just now | 4,779 ft | ||||
| OGA Ogallala, NE | 657 nm out, 3 nm north of the line | no report just now | 3,279 ft | ||||
| HDE Holdrege, NE | 777 nm out, 2 nm west of the line | no report just now | 2,313 ft | ||||
| MCI Kansas City, MO | 996 nm out, 12 nm northeast of the line, tower | no report just now | 1,027 ft | ||||
| MKC Kansas City, MO | 1006 nm out, 4 nm northeast of the line, tower | no report just now | 756 ft | ||||
| CGI Cape Girardeau, MO | 1275 nm out, 6 nm west of the line, tower | no report just now | 341 ft | ||||
| PAH Paducah, KY | 1305 nm out, 6 nm northeast of the line, tower | no report just now | 410 ft | ||||
| BNA Nashville, TN | destination | no report just now | 599 ft |
The highest airport on this list sits at 7,096 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At BNA when you get there the forecast at the estimated arrival, 11:48 am CDT (16:48 UTC)
BNA has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/0708 Goodlettsville, TN, Saturday, August 1, 2026 through Sunday, August 1, 2027 UTC 11 nm from the route, at the destination end · security · until 1 August · ZME
Daylight
Sunset at BOI 7:05 pm MDT (01:05 UTC), at BNA 6:15 pm CDT (23:15 UTC) (civil twilight ends 6:40 pm CDT (23:40 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: Boise Air Trml/Gowen Field, Nashville International.