Plan a flight · Sun 5:29 pm PDT (00:29 UTC)

Boeing Fld/King County International to Henderson Executive BFI → HND

764 nautical miles (879 statute miles) southeast on a straight line, true course 153°, about 138° magnetic at the departure end (variation 15E). At 120 knots that is 5 h 53 min at the quickest height in today's winds (24,000 ft, a 10-knot tailwind), arriving about 11:22 pm PDT (06:22 UTC), after sunset at the destination. Right now BFI is VFR, wind variable at 6 knots; HND is VFR, wind from the south-southwest (210°) at 16 knots. 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: 3 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

SIGMET W72W: thunderstorms (a convective SIGMET) up to 30,000 ft, moving from the southwest at 20 knots, until 6:55 pm PDT (01:55 UTC). Over the route from 536 to 565 nm out.
as issued
```
WSUS33 KKCI 112355
MKCW WST 112355
CONVECTIVE SIGMET 72W
VALID UNTIL 0155Z
NV
FROM 60SSW BAM-60W ELY-OAL-40WNW OAL-60SSW BAM
AREA TS MOV FROM 23020KT. TOPS TO FL300.
```
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 25,000 ft to 39,000 ft. Over the first 0 nm of the route.
AIRMET ZULU 2C: moderate icing up to 14,000 ft. Over the route from 129 to 228 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 585 nm of the route.
AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the last 397 nm of the route.
AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Over the route from 565 to 655 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 139 nm of the route.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 89 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 BFI.

Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first

E75L at 10,000 ft, 47 nm southwest, 3:04 pm PDT (22:04 UTC): moderate rime icing, -9 °C, remarks: from 10,000 ft to 7,500 ft during the descent. 79 nm along the route, 47 nm southwest of the line.
as filed, and in English
```
PDX UA /OV PDX360025/TM 2204/FL100/TP E75L/TA M9/IC MOD RIME /RM 100-075 DURD
```
Report
a routine report filed through PDX
Where
25 nm north (360°) of PDX
Time
22:04 UTC
Height
at 10,000 ft
Aircraft
E75L
Temperature
−9 °C
Icing
moderate rime
Remarks
from 10,000 ft to 7,500 ft during the descent
C182 at 8,000 ft, 48 nm southwest, 3:52 pm PDT (22:52 UTC): light rime icing, -2 °C. 99 nm along the route, 48 nm southwest of the line.
as filed, and in English
```
PDX UA /OV PDX040017/TM 2252/FL080/TP C182/TA M02/IC LGT RIME
```
Report
a routine report filed through PDX
Where
17 nm northeast (040°) of PDX
Time
22:52 UTC
Height
at 8,000 ft
Aircraft
C182
Temperature
−2 °C
Icing
light rime
C210 at 9,000 ft, 36 nm northeast, 3:51 pm PDT (22:51 UTC): light rime icing, -13 °C, remarks: base 080-ZSE. 159 nm along the route, 36 nm northeast of the line.
as filed, and in English
```
PDT UA /OV PDT230040/TM 2251/FL090/TP C210/TA M13/IC LGT RIME/RM BASE 080-ZSE
```
Report
a routine report filed through PDT
Where
40 nm southwest (230°) of PDT
Time
22:51 UTC
Height
at 9,000 ft
Aircraft
C210
Temperature
−13 °C
Icing
light rime
Remarks
base 080-ZSE
E75L at 9,500 ft, 46 nm southwest, 4:07 pm PDT (23:07 UTC): light rime icing from 7,000 ft to 9,500 ft, a broken layer above 7,300 ft, -2 °C, remarks: during the descent runway 5. 198 nm along the route, 46 nm southwest of the line.
as filed, and in English
```
RDM UA /OV RDM/TM 2307/FL095/TP E75L/SK BKN073-TOPSUNKN/TA M2/IC LGT RIME 095-070/RM DURD RWY 5
```
Report
a routine report filed through RDM
Where
over RDM
Time
23:07 UTC
Height
at 9,500 ft
Aircraft
E75L
Sky
a broken layer from 7,300 ft, tops unknown
Temperature
−2 °C
Icing
light rime from 9,500 ft to 7,000 ft
Remarks
during the descent runway 5
E170 at 10,000 ft, 46 nm southwest, 3:02 pm PDT (22:02 UTC): light rime icing from 7,000 ft to 10,000 ft. 198 nm along the route, 46 nm southwest of the line.
as filed, and in English
```
RDM UA /OV RDM/TM 2202/FL100/TP E170/SK BASE 065-TOPS UNKN/TA UNKN/IC LGT RIME 100-070
```
Report
a routine report filed through RDM
Where
over RDM
Time
22:02 UTC
Height
at 10,000 ft
Aircraft
E170
Sky
base 065-TOPS unknown
Temperature
UNKN
Icing
light rime from 10,000 ft to 7,000 ft
PC24 at 40,000 ft, 6 nm southwest, 4:10 pm PDT (23:10 UTC): light to moderate turbulence. 387 nm along the route, 6 nm southwest of the line.
as filed, and in English
```
LOL UA /OV SDO291023/TM 2310/FL400/TP PC24/TB LGT OCNL MOD /ZLC
```
Report
a routine report filed through LOL
Where
23 nm west (291°) of SDO
Time
23:10 UTC
Height
at 40,000 ft
Aircraft
PC24
Turbulence
light occasional moderate zlc
B73M at 11,000 ft, 4 nm northeast, 2:45 pm PDT (21:45 UTC): light rime icing, overcast above 11,000 ft. At the destination end, 4 nm northeast of the line.
as filed, and in English
```
LAS UA /OV LAS350005/TM 2145/FL110/TP B73M/SK 110 OVC/IC LGT RIME
```
Report
a routine report filed through LAS
Where
5 nm north (350°) of LAS
Time
21:45 UTC
Height
at 11,000 ft
Aircraft
B73M
Sky
at 11,000 ft overcast
Icing
light rime
G280 at 41,000 ft, 30 nm southwest, 4:37 pm PDT (23:37 UTC): light to moderate clear-air turbulence, remarks: ZDVWC-46. At the destination end, 30 nm southwest of the line.
as filed, and in English
```
ALS UA /OV LAS190035/TM 2337/FL410/TP G280/TB LGT-MOD CAT/RM ZDVWC-46
```
Report
a routine report filed through ALS
Where
35 nm south (190°) of LAS
Time
23:37 UTC
Height
at 41,000 ft
Aircraft
G280
Turbulence
light to moderate clear-air turbulence
Remarks
ZDVWC-46
B752 at 17,500 ft, 38 nm east, 3:48 pm PDT (22:48 UTC): a broken layer from 17,500 ft to 18,500 ft; overcast, remarks: layer of precip west of niitz 25 nautical miles lgt-hvy rain zlawc. At the destination end, 38 nm east of the line.
as filed, and in English
```
LAS UA /OV BLD065025/TM 2248/FL175/TP B752/SK BKN175-TOP185/OVC/RM LAYER OF PRECIP W OF NIITZ 25 NM LGT-HVY RAIN /ZLAWC AWC-WEB
```
Report
a routine report filed through LAS
Where
BLD065025 C
Time
22:48 UTC
Height
at 17,500 ft
Aircraft
B752
Sky
a broken layer from 17,500 ft, tops 18,500 ft
Remarks
layer of precip west of niitz 25 nautical miles lgt-hvy rain zlawc
A20N at 23,000 ft, 47 nm southwest, 2:37 pm PDT (21:37 UTC): light rime icing from 21,000 ft to 23,000 ft, -21 °C, remarks: during the climb zlawc. At the destination end, 47 nm southwest of the line.
as filed, and in English
```
CDC UA /OV LAS210050/TM 2137/FL230/TP A20N/TA M21/IC LGT RIME 210-230/RM DURC ZLAWC AWC-WEB
```
Report
a routine report filed through CDC
Where
50 nm southwest (210°) of LAS
Time
21:37 UTC
Height
at 23,000 ft
Aircraft
A20N
Temperature
−21 °C
Icing
light rime from 21,000 ft to 23,000 ft
Remarks
during the climb zlawc

Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 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 7 forecast points nearest it (SEA, YKM, RDM, LKV, BAM, ELY, LAS). 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	360° at 4 kt	−3 kt	4 °C	123 kt	6 h 13 min	11:42 pm PDT (06:42 UTC)
7,500 ft	330° at 4 kt	−4 kt	0 °C	124 kt	6 h 10 min	11:39 pm PDT (06:39 UTC)
9,500 ft	340° at 5 kt	−5 kt	-3 °C	125 kt	6 h 07 min	11:36 pm PDT (06:36 UTC)
11,500 ft	290° at 6 kt	−4 kt	-6 °C	124 kt	6 h 10 min	11:39 pm PDT (06:39 UTC)
13,500 ft	290° at 7 kt	−4 kt	-10 °C	124 kt	6 h 10 min	11:39 pm PDT (06:39 UTC)
15,500 ft	290° at 8 kt	−5 kt	-14 °C	125 kt	6 h 07 min	11:36 pm PDT (06:36 UTC)
17,500 ft	290° at 9 kt	−5 kt	-17 °C	125 kt	6 h 07 min	11:36 pm PDT (06:36 UTC)
18,000 ft FL180	290° at 9 kt	−5 kt	-18 °C	125 kt	6 h 07 min	11:36 pm PDT (06:36 UTC)
24,000 ft FL240	310° at 12 kt	−10 kt	-26 °C	130 kt	5 h 53 min	11:22 pm PDT (06:22 UTC)
30,000 ft FL300	260° at 21 kt	−5 kt	-31 °C	125 kt	6 h 07 min	11:36 pm PDT (06:36 UTC)
34,000 ft FL340	240° at 27 kt	+2 kt	-35 °C	118 kt	6 h 28 min	11:57 pm PDT (06:57 UTC)
39,000 ft FL390	240° at 31 kt	+5 kt	-42 °C	115 kt	6 h 39 min	12:08 am PDT (07:08 UTC)

Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 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; 21 nm from the line	360/9	350/10 1°	010/10 -5°	030/20 -11°	020/60 -17°	010/86 -26°	360/90 -40°	010/68 -42°	360/31 -43°
YKM	used from 50 nm out; 40 nm from the line	030/16	020/18 0°	030/30 -8°	030/23 -13°	020/40 -23°	010/73 -29°	010/54 -36°	360/29 -37°	330/16 -40°
RDM	used from 149 nm out; 52 nm from the line		010/15 -2°	030/21 -8°	020/26 -12°	020/46 -22°	010/72 -27°	360/47 -34°	340/31 -35°	320/20 -40°
LKV	used from 298 nm out; 72 nm from the line			010/18 -6°	280/7 -11°	290/9 -22°	280/13 -27°	290/20 -31°	260/19 -34°	260/27 -39°
BAM	used from 397 nm out; 64 nm from the line			270/8 4°	230/27 -4°	220/49 -18°	210/52 -26°	220/77 -29°	220/71 -33°	220/63 -43°
ELY	used from 546 nm out; 90 nm from the line			210/20 4°	240/21 -1°	230/37 -13°	200/58 -25°	220/73 -27°	220/73 -36°	220/69 -44°
LAS	used from 645 nm out; 88 nm from the line		200/25 11°	230/22 5°	240/25 -1°	220/37 -12°	220/44 -21°	210/52 -27°	210/60 -34°	220/58 -44°

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	variable at 6 knots	10+ mi	none	21 ft	4:53 pm PDT (23:53 UTC)
PLU Puyallup, WA	20 nm out, 12 nm southwest of the line	VFR Weather: light drizzle	calm	10+ mi	none	537 ft	23:35 UTC
DLS The Dalles, OR	119 nm out, 11 nm southwest of the line	VFR Sky: overcast at 9,500 feet	from the west-southwest (240°) at 3 knots	10+ mi	9,500 ft	246 ft	23:53 UTC
BNO Burns, OR	278 nm out, 23 nm northeast of the line	VFR	from the north-northwest (340°) at 13 knots, gusting to 25	10+ mi	none	4,148 ft	23:53 UTC
WMC Winnemucca, NV	446 nm out, 4 nm north of the line	VFR Sky: a broken layer at 7,500 feet, a broken layer at 8,500 feet	from the north-northwest (340°) at 18 knots, gusting to 28	10+ mi	7,500 ft	4,307 ft	23:56 UTC
TMT Austin, NV	536 nm out, 8 nm west of the line	VFR Sky: scattered clouds at 4,300 feet, overcast at 6,000 feet Weather: light rain	from the southwest (220°) at 12 knots, gusting to 23	10+ mi	6,000 ft	5,735 ft	00:15 UTC
HND Las Vegas, NV	destination	VFR	from the south-southwest (210°) at 16 knots	10+ mi	none	2,491 ft	4:56 pm PDT (23:56 UTC)

The highest airport on this list sits at 5,735 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At HND when you get there the forecast at the estimated arrival, 11:22 pm PDT (06:22 UTC)

Wind from the south-southwest at 12 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 5,000 feet, a broken layer at 8,000 feet VFR

The whole forecast for HND

From Sun 5:00 pm PDT (00:00 UTC): wind from the south-southwest at 17 knots, gusting to 27, visibility more than 6 miles, showers nearby, scattered clouds at 6,000 feet, a broken layer at 8,000 feet
From Sun 7:00 pm PDT (02:00 UTC): wind from the south-southwest at 12 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 5,000 feet, a broken layer at 8,000 feet
From Mon 1:00 am PDT (08:00 UTC): wind from the south at 8 knots, visibility more than 6 miles, scattered clouds at 7,000 feet, a broken layer at 10,000 feet
From Mon 9:00 am PDT (16:00 UTC): wind from the south at 11 knots, visibility more than 6 miles, showers nearby, scattered clouds at 7,000 feet, a broken layer at 10,000 feet
From Mon 12:00 pm PDT (19:00 UTC): wind from the south-southwest at 16 knots, gusting to 26, visibility more than 6 miles, showers nearby, scattered clouds at 7,000 feet, a broken layer at 10,000 feet

The forecast for BFI, the departure

From Sun 5:00 pm PDT (00:00 UTC): wind from the north-northwest at 8 knots, gusting to 18, visibility more than 6 miles, a few clouds at 5,000 feet
From Sun 7:00 pm PDT (02:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
From Mon 3:00 am PDT (10:00 UTC): wind light and variable, visibility more than 6 miles, patches of fog, clear skies
From Mon 9:00 am PDT (16:00 UTC): wind from the south-southeast at 3 knots, visibility more than 6 miles, clear skies
From Mon 12:00 pm PDT (19:00 UTC): wind from the west-southwest at 3 knots, visibility more than 6 miles, clear skies
From Mon 2:00 pm PDT (21:00 UTC): wind from the west at 5 knots, visibility more than 6 miles, clear skies

Temporary flight restrictions on the line or within 25 nm of it

6/8890 LAS VEGAS, NV, Tuesday, October 13, 2026 Local on the route, at the destination end · a VIP movement · starts tomorrow · ZLA
6/8808 Las Vegas, NV, Tuesday, October 13, 2026 Local 3 nm from the route, at the destination end · security · starts tomorrow · ZLA

Daylight

Sunset at BFI 6:27 pm PDT (01:27 UTC), at HND 6:08 pm PDT (01:08 UTC) (civil twilight ends 6:34 pm PDT (01:34 UTC)). At 120 knots the arrival at HND is before sunrise there (6:44 am PDT (13:44 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

Radar now, the Pacific Northwest · loop National Weather Service

Radar now, the Pacific Southwest · loop National Weather Service

Radar, the whole country · loop National Weather Service

Surface analysis now Weather Prediction Center

Forecast chart, 12 hours ahead Weather Prediction Center

Forecast chart, 24 hours ahead Weather Prediction Center

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, Henderson Executive.