Boeing Fld/King County International to Olympia Regional BFI → OLM
42 nautical miles (48 statute miles) southwest on a straight line, true course 216°, about 201° magnetic at the departure end (variation 15E). At 120 knots that is 14 min at the quickest height in today's winds (34,000 ft, a 54-knot tailwind), arriving about 8:21 am PDT (15:21 UTC). Right now BFI is VFR, wind from the south-southeast (160°) at 3 knots; OLM is marginal VFR, wind calm. 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: 1 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
No SIGMET or AIRMET covers any part of this route right now.
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 BFI.
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 14:00–21:00 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 1 forecast point nearest it (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 | light and variable | 0 | 120 kt | 21 min | 8:28 am PDT (15:28 UTC) | |
| 6,500 ft | 020° at 2 kt | −2 kt | 0 °C | 122 kt | 21 min | 8:28 am PDT (15:28 UTC) |
| 8,500 ft | 020° at 11 kt | −10 kt | -2 °C | 130 kt | 19 min | 8:26 am PDT (15:26 UTC) |
| 10,500 ft | 020° at 20 kt | −19 kt | -3 °C | 139 kt | 18 min | 8:25 am PDT (15:25 UTC) |
| 12,500 ft | 020° at 28 kt | −27 kt | -5 °C | 147 kt | 17 min | 8:24 am PDT (15:24 UTC) |
| 14,500 ft | 010° at 34 kt | −31 kt | -8 °C | 151 kt | 17 min | 8:24 am PDT (15:24 UTC) |
| 16,500 ft | 010° at 39 kt | −35 kt | -12 °C | 155 kt | 16 min | 8:23 am PDT (15:23 UTC) |
| 18,000 ft FL180 | 010° at 43 kt | −39 kt | -14 °C | 159 kt | 16 min | 8:23 am PDT (15:23 UTC) |
| 24,000 ft FL240 | 360° at 54 kt | −44 kt | -26 °C | 164 kt | 15 min | 8:22 am PDT (15:22 UTC) |
| 30,000 ft FL300 | 360° at 63 kt | −51 kt | -40 °C | 171 kt | 15 min | 8:22 am PDT (15:22 UTC) |
| 34,000 ft FL340 | 010° at 60 kt | −54 kt | -48 °C | 174 kt | 14 min | 8:21 am PDT (15:21 UTC) |
| 39,000 ft FL390 | 350° at 39 kt | −27 kt | -50 °C | 147 kt | 17 min | 8:24 am PDT (15:24 UTC) |
Based on data from the 12th at 12:00 UTC; valid on the 12th at 18:00 UTC for use 14:00 to 21:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| SEA | used from 0 nm out; 17 nm from the line | L/V | L/V 1° | 020/13 -2° | 020/27 -4° | 010/43 -14° | 360/54 -26° | 360/63 -40° | 010/60 -48° | 350/39 -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 |
|---|---|---|---|---|---|---|---|
| BFI Seattle, WA | departure | VFR | from the south-southeast (160°) at 3 knots | 10+ mi | none | 21 ft | 7:53 am PDT (14:53 UTC) |
| TIW Tacoma, WA | 17 nm out, 3 nm southwest of the line, tower | VFR Sky: a few clouds at 300 feet | calm | 10+ mi | none | 294 ft | 14:53 UTC |
| OLM Olympia, WA | destination | marginal VFR Weather: mist | calm | 4 mi | none | 207 ft | 8:00 am PDT (15:00 UTC) |
The highest airport on this list sits at 294 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At OLM when you get there the forecast at the estimated arrival, 8:21 am PDT (15:21 UTC)
Wind light and variable, visibility 6 miles, patches of fog, clear skies VFR
At times between Mon 5:00 am PDT (12:00 UTC) and 9:00 am PDT (16:00 UTC): visibility 2 miles, mist, scattered clouds at 100 feet IFR
The whole forecast for OLM
- From Mon 5:00 am PDT (12:00 UTC): wind light and variable, visibility 6 miles, patches of fog, clear skies
- At times between Mon 5:00 am PDT (12:00 UTC) and 9:00 am PDT (16:00 UTC): visibility 2 miles, mist, scattered clouds at 100 feet
- From Mon 11:00 am PDT (18:00 UTC): wind from the northeast at 4 knots, visibility more than 6 miles, clear skies
- From Mon 3:00 pm PDT (22:00 UTC): wind from the north at 5 knots, visibility more than 6 miles, clear skies
- From Mon 8:00 pm PDT (03:00 UTC): wind calm, visibility more than 6 miles, scattered clouds at 25,000 feet
- From Tue 2:00 am PDT (09:00 UTC): wind light and variable, visibility 6 miles, mist, overcast at 10,000 feet
The forecast for BFI, the departure
- From Mon 5:00 am PDT (12:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
- From Mon 12:00 pm PDT (19:00 UTC): wind from the west-southwest at 4 knots, visibility more than 6 miles, clear skies
- From Mon 2:00 pm PDT (21:00 UTC): wind from the west-northwest at 5 knots, visibility more than 6 miles, clear skies
- From Mon 8:00 pm PDT (03:00 UTC): wind calm, visibility more than 6 miles, scattered clouds at 25,000 feet
- From Tue 4:00 am PDT (11:00 UTC): wind from the south-southeast at 4 knots, visibility more than 6 miles, overcast at 10,000 feet
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 BFI 6:25 pm PDT (01:25 UTC), at OLM 6:28 pm PDT (01:28 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: Boeing Fld/King County International, Olympia Regional.