Miami International to Boeing Fld/King County International MIA → BFI
2,366 nautical miles (2,723 statute miles) northwest on a straight line, true course 315°, about 320° magnetic at the departure end (variation 5W). At 120 knots that is 21 h 08 min at the quickest height in today's winds (10,500 ft, a 8-knot headwind), arriving about 1:32 am PDT (08:32 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: 4 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 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 918 to 1328 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 1477 to 1657 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 1487 to 1657 nm out.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the route from 1547 to 1637 nm out.
- AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Near the route, 1657 nm along the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 1687 to 1937 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 1817 to 2126 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1847 to 2186 nm out.
- AIRMET ZULU 2C: moderate icing up to 18,000 ft. Over the route from 1957 to 2196 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the route from 2036 to 2336 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 MIA.
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 18 forecast points nearest it (MIA, PIE, TLH, MGM, JAN, MEM, LIT, FSM, TUL, ICT, SLN, GLD, BFF, LND, DLN, LWS, 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 | 270° at 16 kt | +13 kt | 107 kt | 22 h 07 min | 2:31 am PDT (09:31 UTC) | |
| 6,500 ft | 280° at 15 kt | +13 kt | 13 °C | 107 kt | 22 h 07 min | 2:31 am PDT (09:31 UTC) |
| 8,500 ft | 270° at 11 kt | +9 kt | 7 °C | 111 kt | 21 h 19 min | 1:43 am PDT (08:43 UTC) |
| 10,500 ft | 260° at 12 kt | +8 kt | 5 °C | 112 kt | 21 h 08 min | 1:32 am PDT (08:32 UTC) |
| 12,500 ft | 250° at 14 kt | +8 kt | 2 °C | 112 kt | 21 h 08 min | 1:32 am PDT (08:32 UTC) |
| 14,500 ft | 250° at 14 kt | +8 kt | -3 °C | 112 kt | 21 h 08 min | 1:32 am PDT (08:32 UTC) |
| 16,500 ft | 250° at 15 kt | +8 kt | -7 °C | 112 kt | 21 h 08 min | 1:32 am PDT (08:32 UTC) |
| 18,000 ft FL180 | 250° at 15 kt | +8 kt | -10 °C | 112 kt | 21 h 08 min | 1:32 am PDT (08:32 UTC) |
| 24,000 ft FL240 | 250° at 22 kt | +13 kt | -21 °C | 107 kt | 22 h 07 min | 2:31 am PDT (09:31 UTC) |
| 30,000 ft FL300 | 270° at 32 kt | +26 kt | -32 °C | 94 kt | 25 h 10 min | 5:34 am PDT (12:34 UTC) |
| 34,000 ft FL340 | 270° at 33 kt | +28 kt | -39 °C | 92 kt | 25 h 43 min | 6:07 am PDT (13:07 UTC) |
| 39,000 ft FL390 | 260° at 31 kt | +25 kt | -48 °C | 95 kt | 24 h 54 min | 5:18 am PDT (12:18 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| MIA | used from 0 nm out; 25 nm from the line | L/V | L/V 17° | L/V 13° | L/V 8° | 270/6 -6° | 250/9 -17° | 290/17 -32° | 280/25 -41° | 280/21 -52° |
| PIE | used from 100 nm out; 56 nm from the line | 360/10 | 340/12 18° | 330/9 13° | 290/12 8° | 260/21 -7° | 280/18 -18° | 250/20 -33° | 250/26 -41° | 250/20 -51° |
| TLH | used from 250 nm out; 88 nm from the line | 340/23 | 350/26 17° | 350/21 11° | 300/13 6° | 320/25 -6° | 340/35 -16° | 350/44 -32° | 360/51 -42° | 350/33 -52° |
| MGM | used from 449 nm out; 71 nm from the line | 320/19 | 330/16 17° | 340/21 11° | 330/11 5° | 330/27 -6° | 330/21 -17° | 330/37 -32° | 340/44 -40° | 360/30 -52° |
| JAN | used from 549 nm out; 89 nm from the line | 240/10 | 260/15 18° | 280/10 11° | 290/6 6° | 290/15 -5° | 300/15 -17° | 320/35 -30° | 330/38 -40° | 330/39 -51° |
| MEM | used from 699 nm out; 76 nm from the line | 250/19 | 260/19 17° | 270/20 12° | 270/16 6° | 270/21 -6° | 290/27 -17° | 300/37 -30° | 300/49 -40° | 310/40 -51° |
| LIT | used from 749 nm out; 46 nm from the line | 250/22 | 250/25 18° | 240/23 12° | 240/20 7° | 250/17 -6° | 260/25 -17° | 300/45 -29° | 300/49 -40° | 310/43 -51° |
| FSM | used from 898 nm out; 47 nm from the line | 230/33 | 260/23 15° | 240/23 11° | 230/18 8° | 230/20 -8° | 250/31 -17° | 280/51 -30° | 280/52 -39° | 300/47 -51° |
| TUL | used from 948 nm out; 64 nm from the line | 230/42 | 250/23 17° | 220/16 14° | 240/10 8° | 240/20 -6° | 260/28 -17° | 270/61 -29° | 280/52 -38° | 290/46 -50° |
| ICT | used from 1048 nm out; 57 nm from the line | 230/45 | 240/33 21° | 230/23 14° | 230/22 7° | 240/29 -7° | 240/36 -20° | 260/78 -29° | 270/69 -36° | 270/56 -49° |
| SLN | used from 1148 nm out; 27 nm from the line | 230/49 | 240/41 22° | 230/26 15° | 220/21 7° | 240/38 -8° | 240/44 -21° | 260/77 -29° | 270/70 -36° | 270/63 -48° |
| GLD | used from 1248 nm out; 91 nm from the line | 260/37 | 260/25 14° | 250/27 8° | 230/36 -8° | 230/49 -21° | 250/71 -30° | 260/82 -36° | 250/73 -48° | |
| BFF | used from 1398 nm out; 85 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 1597 nm out; 110 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° | ||
| DLN | used from 1847 nm out; 73 nm from the line | 190/10 -4° | 220/23 -4° | 210/21 -18° | 210/43 -28° | 210/60 -33° | 210/72 -37° | 210/67 -44° | ||
| LWS | used from 2046 nm out; 68 nm from the line | L/V | 340/5 -3° | L/V -6° | 040/7 -10° | 100/23 -22° | 180/30 -31° | 190/11 -34° | 200/11 -36° | 220/23 -40° |
| YKM | used from 2196 nm out; 66 nm from the line | 360/6 | 360/11 -1° | 030/20 -7° | 040/21 -11° | 020/55 -18° | 010/84 -26° | 010/79 -40° | 010/45 -42° | 350/23 -42° |
| SEA | used from 2296 nm out; 44 nm from the line | 350/5 | 010/6 0° | 010/9 -4° | 010/27 -6° | 010/51 -15° | 360/58 -26° | 360/60 -41° | 350/55 -48° | 340/30 -45° |
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 |
|---|---|---|---|---|---|---|---|
| MIA Miami, FL | departure | no report just now | 9 ft | ||||
| PIE St Petersburg-Clearwater, FL | 180 nm out, 2 nm north of the line, tower | no report just now | 10 ft | ||||
| ECP Panama City, FL | 399 nm out, 1 nm west of the line, tower | no report just now | 68 ft | ||||
| GWO Greenwood, MS | 689 nm out, 2 nm southwest of the line, tower | no report just now | 162 ft | ||||
| FYV Fayetteville, AR | 938 nm out, 10 nm southwest of the line, tower | no report just now | 1,252 ft | ||||
| XNA Fayetteville/Springdale/Rogers, AR | 958 nm out, 3 nm southeast of the line, tower | no report just now | 1,288 ft | ||||
| RSL Russell, KS | 1218 nm out, 2 nm west of the line | no report just now | 1,863 ft | ||||
| CPR Casper, WY | 1647 nm out, 20 nm northeast of the line, tower | no report just now | 5,344 ft | ||||
| RIW Riverton, WY | 1727 nm out, 14 nm south of the line | no report just now | 5,516 ft | ||||
| GIC Grangeville, ID | 2096 nm out, 2 nm east of the line | no report just now | 3,313 ft | ||||
| LWS Lewiston, ID | 2136 nm out, 10 nm north of the line, tower | no report just now | 1,442 ft | ||||
| BFI Seattle, WA | destination | no report just now | 21 ft |
The highest airport on this list sits at 5,516 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At BFI when you get there the forecast at the estimated arrival, 1:32 am PDT (08:32 UTC)
BFI has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
No temporary flight restriction on or near this route right now.
Daylight
Sunset at MIA 6:56 pm EDT (22:56 UTC), at BFI 6:25 pm PDT (01:25 UTC) (civil twilight ends 6:56 pm PDT (01:56 UTC)). At 120 knots the arrival at BFI is before sunrise there (7:24 am PDT (14:24 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: Miami International, Boeing Fld/King County International.