Nashville International to Seattle-Tacoma International BNA → SEA
1,715 nautical miles (1,974 statute miles) northwest on a straight line, true course 305°, about 308° magnetic at the departure end (variation 3W). At 120 knots that is 14 h 25 min at the quickest height in today's winds (4,500 ft, a 1-knot headwind), arriving about 1:41 pm PDT (20:41 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: 2,932 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 40 nm of the route.
- 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 329 to 798 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 718 to 1396 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the route from 878 to 1107 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 897 to 1087 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 937 to 1137 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 997 to 1177 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1047 to 1506 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 1187 to 1596 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 1256 to 1456 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 179 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 BNA.
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 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 15 forecast points nearest it (BNA, CGI, STL, COU, MKC, OMA, GRI, ONL, RAP, BIL, DLN, LWS, GEG, YKM, SEA). 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 | 220° at 12 kt | +1 kt | 15 °C | 119 kt | 14 h 25 min | 1:41 pm PDT (20:41 UTC) |
| 6,500 ft | 220° at 10 kt | +2 kt | 12 °C | 118 kt | 14 h 32 min | 1:48 pm PDT (20:48 UTC) |
| 8,500 ft | 230° at 9 kt | +3 kt | 6 °C | 117 kt | 14 h 39 min | 1:55 pm PDT (20:55 UTC) |
| 10,500 ft | 230° at 11 kt | +5 kt | 3 °C | 115 kt | 14 h 55 min | 2:11 pm PDT (21:11 UTC) |
| 12,500 ft | 230° at 14 kt | +6 kt | 0 °C | 114 kt | 15 h 03 min | 2:19 pm PDT (21:19 UTC) |
| 14,500 ft | 230° at 16 kt | +8 kt | -4 °C | 112 kt | 15 h 19 min | 2:35 pm PDT (21:35 UTC) |
| 16,500 ft | 230° at 18 kt | +9 kt | -8 °C | 111 kt | 15 h 27 min | 2:43 pm PDT (21:43 UTC) |
| 18,000 ft FL180 | 230° at 20 kt | +10 kt | -11 °C | 110 kt | 15 h 35 min | 2:51 pm PDT (21:51 UTC) |
| 24,000 ft FL240 | 230° at 24 kt | +11 kt | -22 °C | 109 kt | 15 h 44 min | 3:00 pm PDT (22:00 UTC) |
| 30,000 ft FL300 | 250° at 32 kt | +22 kt | -34 °C | 98 kt | 17 h 30 min | 4:46 pm PDT (23:46 UTC) |
| 34,000 ft FL340 | 260° at 42 kt | +34 kt | -39 °C | 86 kt | 19 h 57 min | 7:13 pm PDT (02:13 UTC) |
| 39,000 ft FL390 | 260° at 44 kt | +37 kt | -46 °C | 83 kt | 20 h 40 min | 7:56 pm PDT (02:56 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BNA | used from 0 nm out; 25 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° |
| CGI | used from 100 nm out; 36 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° |
| STL | used from 199 nm out; 36 nm from the line | 250/24 | 250/24 16° | 260/23 9° | 270/16 6° | 260/25 -6° | 270/29 -19° | 290/34 -33° | 290/48 -41° | 290/54 -51° |
| COU | used from 249 nm out; 36 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° |
| MKC | used from 349 nm out; 62 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° |
| OMA | used from 449 nm out; 68 nm from the line | 220/47 | 240/33 19° | 250/18 11° | 230/17 6° | 260/29 -8° | 250/33 -19° | 250/51 -33° | 260/61 -40° | 270/62 -49° |
| GRI | used from 548 nm out; 54 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° | |
| ONL | used from 648 nm out; 41 nm from the line | 210/31 20° | 230/27 13° | 230/18 7° | 220/19 -8° | 240/26 -20° | 250/44 -35° | 270/52 -39° | 260/57 -47° | |
| RAP | used from 798 nm out; 78 nm from the line | 180/23 12° | 200/38 13° | 210/38 6° | 220/28 -10° | 230/34 -21° | 230/37 -36° | 250/52 -38° | 250/59 -46° | |
| BIL | used from 997 nm out; 132 nm from the line | 080/13 | 180/9 -2° | 210/38 0° | 220/51 -11° | 210/46 -22° | 210/58 -35° | 230/73 -39° | 230/72 -45° | |
| DLN | used from 1197 nm out; 76 nm from the line | 090/6 -6° | 240/22 -4° | 210/34 -16° | 210/62 -25° | 210/66 -34° | 210/82 -36° | 220/77 -42° | ||
| LWS | used from 1396 nm out; 70 nm from the line | 070/10 | 080/12 -2° | 030/12 -6° | 080/7 -10° | 170/34 -21° | 160/46 -32° | 200/33 -35° | 220/22 -35° | 230/18 -38° |
| GEG | used from 1546 nm out; 66 nm from the line | 080/16 -2° | 050/17 -7° | 080/9 -10° | 190/33 -21° | 180/31 -32° | L/V -35° | L/V -37° | 270/8 -40° | |
| YKM | used from 1596 nm out; 41 nm from the line | 070/10 | 040/15 -1° | 020/27 -8° | 030/25 -13° | 020/48 -20° | 010/83 -27° | 010/77 -37° | 010/49 -40° | 350/14 -41° |
| SEA | used from 1645 nm out; 45 nm from the line | 050/7 | 050/11 1° | 050/12 -5° | 030/31 -7° | 010/61 -15° | 010/69 -26° | 360/73 -40° | 360/62 -47° | 330/21 -43° |
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 |
|---|---|---|---|---|---|---|---|
| BNA Nashville, TN | departure | no report just now | 599 ft | ||||
| PAH Paducah, KY | 120 nm out, 11 nm south of the line, tower | no report just now | 410 ft | ||||
| COU Columbia, MO | 309 nm out, 7 nm southwest of the line, tower | no report just now | 889 ft | ||||
| STJ St Joseph, MO | 449 nm out, 21 nm southwest of the line, tower | no report just now | 826 ft | ||||
| LNK Lincoln, NE | 548 nm out, 6 nm southwest of the line, tower | no report just now | 1,218 ft | ||||
| IEN Pine Ridge, SD | 838 nm out, 3 nm southwest of the line | no report just now | 3,332 ft | ||||
| HSR Hot Springs, SD | 888 nm out, 4 nm east of the line | no report just now | 3,150 ft | ||||
| BYG Buffalo, WY | 1037 nm out, 3 nm northwest of the line | no report just now | 4,970 ft | ||||
| BZN Bozeman, MT | 1247 nm out, 17 nm northeast of the line, tower | no report just now | 4,473 ft | ||||
| LWS Lewiston, ID | 1486 nm out, 18 nm southwest of the line, tower | no report just now | 1,442 ft | ||||
| MWH Moses Lake, WA | 1596 nm out, 10 nm northeast of the line, tower | no report just now | 1,188 ft | ||||
| SEA Seattle, WA | destination | no report just now | 432 ft |
The highest airport on this list sits at 4,970 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SEA when you get there the forecast at the estimated arrival, 1:41 pm PDT (20:41 UTC)
SEA 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 10 nm from the route, at the departure end · security · until 1 August · ZME
- 6/7634 CENTRALIA, MO, Monday, October 12, 2026 UTC 10 nm from the route, 319 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · today · ZKC
Daylight
Sunset at BNA 6:15 pm CDT (23:15 UTC), at SEA 6:27 pm PDT (01:27 UTC) (civil twilight ends 6:58 pm PDT (01:58 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: Nashville International, Seattle-Tacoma International.