Plan a flight · Sun 8:02 pm PDT (03:02 UTC)

Boeing Fld/King County International to Topeka Regional BFI → FOE

1,266 nautical miles (1,457 statute miles) east on a straight line, true course 104°, about 089° magnetic at the departure end (variation 15E). At 120 knots that is 8 h 33 min at the quickest height in today's winds (39,000 ft, a 28-knot tailwind), arriving about 6:35 am CDT (11:35 UTC), after sunset at the destination. Right now BFI is VFR, wind calm; FOE is VFR, wind from the south (180°) at 11 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: 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

AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 149 nm of the route.
AIRMET ZULU 2C: moderate icing up to 20,000 ft. Over the route from 60 to 458 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 189 to 698 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 249 to 448 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 319 to 698 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 468 to 678 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 498 to 807 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 548 to 747 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 568 to 917 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 last 339 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

urgent CRJ2 at 7,000 ft, 30 nm southwest, 6:04 pm PDT (01:04 UTC): moderate turbulence, remarks: low-level wind shear dept runway 03 gain/loss unknown. 728 nm along the route, 30 nm southwest of the line.
as filed, and in English
```
CPR UUA /OV CPR035002/TM 0104/FL070/TP CRJ2/TB CONT MOD TURB/RM LLWS DEPT RY03 GAIN/LOSS UNKN
```
Report
an urgent report filed through CPR
Where
2 nm northeast (035°) of CPR
Time
01:04 UTC
Height
at 7,000 ft
Aircraft
CRJ2
Turbulence
continuous moderate turbulence
Remarks
low-level wind shear dept runway 03 gain/loss unknown
S22T at 15,000 ft, 31 nm southwest, 6:47 pm PDT (01:47 UTC): moderate rime icing above 15,000 ft, -5 °C. 548 nm along the route, 31 nm southwest of the line.
as filed, and in English
```
JAC UA /OV DNW010020/TM 0147/FL150/TP S22T/TA M05/IC MOD RIME 150 /ZLC
```
Report
a routine report filed through JAC
Where
20 nm north (010°) of DNW
Time
01:47 UTC
Height
at 15,000 ft
Aircraft
S22T
Temperature
−5 °C
Icing
moderate rime at 15,000 ft zlc
UAL1340 at 40,000 ft, 29 nm southwest, 5:18 pm PDT (00:18 UTC): moderate chop turbulence, wind 244° at 70 knots. 1007 nm along the route, 29 nm southwest of the line.
as filed, and in English
```
ARP UAL1340 4046N 10049W 0018 F400 244/070KT TB OCNL MOD CHOP IC
```
Report
a routine report filed through ARP
A321 at 13,500 ft, 31 nm south, 6:54 pm PDT (01:54 UTC): remarks: zse. At the departure end, 31 nm south of the line.
as filed, and in English
```
SEA UA /OV SEA120045/TM 0154/FL135/TP A321/SK TOP130/RM ZSE
```
Report
a routine report filed through SEA
Where
45 nm southeast (120°) of SEA
Time
01:54 UTC
Height
at 13,500 ft
Aircraft
A321
Sky
TOP130
Remarks
zse
SB20 at 16,000 ft, 30 nm north, 6:52 pm PDT (01:52 UTC): remarks: zse. At the departure end, 30 nm north of the line.
as filed, and in English
```
PAE UA /OV PAE075045/TM 0152/FL160/TP SB20/SK TOP120/RM ZSE
```
Report
a routine report filed through PAE
Where
45 nm east (075°) of PAE
Time
01:52 UTC
Height
at 16,000 ft
Aircraft
SB20
Sky
TOP120
Remarks
zse
PC12 at 15,000 ft, 31 nm south, 5:42 pm PDT (00:42 UTC): remarks: zse. At the departure end, 31 nm south of the line.
as filed, and in English
```
YKM UA /OV YKM270050/TM 0042/FL150/TP PC12/SK TOP130/RM -ZSE
```
Report
a routine report filed through YKM
Where
50 nm west (270°) of YKM
Time
00:42 UTC
Height
at 15,000 ft
Aircraft
PC12
Sky
TOP130
Remarks
zse
PC12 at 13,000 ft, 31 nm south, 5:42 pm PDT (00:42 UTC): remarks: zse. At the departure end, 31 nm south of the line.
as filed, and in English
```
YKM UA /OV YKM270050/TM 0042/FL130/TP PC12/SK TOP130/RM -ZSE
```
Report
a routine report filed through YKM
Where
50 nm west (270°) of YKM
Time
00:42 UTC
Height
at 13,000 ft
Aircraft
PC12
Sky
TOP130
Remarks
zse
PC12 at 13,500 ft, 14 nm southwest, 6:08 pm PDT (01:08 UTC): no turbulence, a trace of icing, overcast from 9,000 ft to 13,500 ft, -10 °C. 149 nm along the route, 14 nm southwest of the line.
as filed, and in English
```
PSC UA /OV PSC360025/TM 0108/FL135/TP PC12/SK OVC090-TOP135/TA M10/TB NEG /IC TRACE RM 135-090
```
Report
a routine report filed through PSC
Where
25 nm north (360°) of PSC
Time
01:08 UTC
Height
at 13,500 ft
Aircraft
PC12
Sky
overcast from 9,000 ft, tops 13,500 ft
Temperature
−10 °C
Turbulence
none
Icing
trace remarks from 13,500 ft to 9,000 ft
E75L descending, 45 nm north, 6:04 pm PDT (01:04 UTC): remarks: had the airport in sight at 400-500FT above ground. 468 nm along the route, 45 nm north of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 0104/FLDURD/TP E75L/RM HAD THE AIRPORT IN SIGHT AT 400-500FT AGL
```
Report
a routine report filed through BZN
Where
over BZN
Time
01:04 UTC
Height
during the descent
Aircraft
E75L
Remarks
had the airport in sight at 400-500FT above ground
B737 descending, 45 nm north, 5:28 pm PDT (00:28 UTC): scattered clouds above 8,000 ft, fog, snow, remarks: broke out about 100FT above mins. 468 nm along the route, 45 nm north of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 0028/FLDURD/TP B737/SK SCT080/WX 1/2SM SN FG/RM BROKE OUT ABOUT 100FT ABOVE MINS
```
Report
a routine report filed through BZN
Where
over BZN
Time
00:28 UTC
Height
during the descent
Aircraft
B737
Sky
scattered clouds from 8,000 ft
Weather
1/2SM, snow, fog
Remarks
broke out about 100FT above mins
UAL1076 at 30,000 ft, 8 nm northeast, 7:36 pm PDT (02:36 UTC): light turbulence, wind 225° at 60 knots. 638 nm along the route, 8 nm northeast of the line.
as filed, and in English
```
ARP UAL1076 4405N 10749W 0236 F300 225/060KT TB CONT LGT TURB IC
```
Report
a routine report filed through ARP
CRJ2 at 9,000 ft, 46 nm southwest, 5:35 pm PDT (00:35 UTC): light chop turbulence, vmc, remarks: occasional moderate turbulence at at 15,000 ft. 718 nm along the route, 46 nm southwest of the line.
as filed, and in English
```
CPR UA /OV CPR215015/TM 0035/FL090/TP CRJ2/WX VMC/TB LGT CHOP/RM OCNL MOD TURB AT 150
```
Report
a routine report filed through CPR
Where
15 nm southwest (215°) of CPR
Time
00:35 UTC
Height
at 9,000 ft
Aircraft
CRJ2
Weather
visual conditions
Turbulence
light chop
Remarks
occasional moderate turbulence at at 15,000 ft
B789 at 40,000 ft, 38 nm southwest, 5:22 pm PDT (00:22 UTC): light to moderate clear-air turbulence, remarks: zdvwc. 977 nm along the route, 38 nm southwest of the line.
as filed, and in English
```
SNY UA /OV SNY088072/TM 0022/FL400/TP B789/TB OCNL LGT-MOD CAT /RM ZDVWC
```
Report
a routine report filed through SNY
Where
72 nm east (088°) of SNY
Time
00:22 UTC
Height
at 40,000 ft
Aircraft
B789
Turbulence
occasional light to moderate clear-air turbulence
Remarks
zdvwc
B789 at 40,000 ft, 35 nm southwest, 5:22 pm PDT (00:22 UTC): light to moderate clear-air turbulence, remarks: zdvwc. 987 nm along the route, 35 nm southwest of the line.
as filed, and in English
```
SNY UA /OV SNY088081/TM 0022/FL400/TP B789/TB OCNL LGT-MOD CAT/RM ZDVWC
```
Report
a routine report filed through SNY
Where
81 nm east (088°) of SNY
Time
00:22 UTC
Height
at 40,000 ft
Aircraft
B789
Turbulence
occasional light to moderate clear-air turbulence
Remarks
zdvwc

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 10 forecast points nearest it (SEA, YKM, LWS, DLN, BIL, LND, BFF, GRI, SLN, MKC). 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	200° at 13 kt	+4 kt	21 °C	116 kt	10 h 55 min	8:57 am CDT (13:57 UTC)
7,500 ft	210° at 10 kt	+1 kt	3 °C	119 kt	10 h 38 min	8:40 am CDT (13:40 UTC)
9,500 ft	220° at 10 kt	−2 kt	3 °C	122 kt	10 h 23 min	8:25 am CDT (13:25 UTC)
11,500 ft	220° at 13 kt	−2 kt	0 °C	122 kt	10 h 23 min	8:25 am CDT (13:25 UTC)
13,500 ft	220° at 16 kt	−3 kt	-4 °C	123 kt	10 h 18 min	8:20 am CDT (13:20 UTC)
15,500 ft	220° at 18 kt	−4 kt	-8 °C	124 kt	10 h 13 min	8:15 am CDT (13:15 UTC)
17,500 ft	220° at 20 kt	−5 kt	-12 °C	125 kt	10 h 08 min	8:10 am CDT (13:10 UTC)
18,000 ft FL180	220° at 21 kt	−5 kt	-13 °C	125 kt	10 h 08 min	8:10 am CDT (13:10 UTC)
24,000 ft FL240	220° at 27 kt	−6 kt	-24 °C	126 kt	10 h 03 min	8:05 am CDT (13:05 UTC)
30,000 ft FL300	230° at 34 kt	−14 kt	-33 °C	134 kt	9 h 27 min	7:29 am CDT (12:29 UTC)
34,000 ft FL340	240° at 42 kt	−22 kt	-37 °C	142 kt	8 h 55 min	6:57 am CDT (11:57 UTC)
39,000 ft FL390	240° at 46 kt	−28 kt	-44 °C	148 kt	8 h 33 min	6:35 am CDT (11:35 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
SEA	used from 0 nm out; 25 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°
YKM	used from 50 nm out; 38 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°
LWS	used from 149 nm out; 53 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°
DLN	used from 349 nm out; 53 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°
BIL	used from 548 nm out; 89 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°
LND	used from 598 nm out; 79 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 747 nm out; 97 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°
GRI	used from 997 nm out; 86 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 1146 nm out; 61 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 1246 nm out; 59 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°

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	calm	10+ mi	none	21 ft	7:53 pm PDT (02:53 UTC)
MWH Moses Lake, WA	120 nm out, 14 nm northeast of the line, tower	VFR Sky: scattered clouds at 8,500 feet, overcast at 11,000 feet	from the north-northwest (330°) at 3 knots	10+ mi	11,000 ft	1,188 ft	02:52 UTC
LWS Lewiston, ID	229 nm out, 7 nm southwest of the line, tower	VFR Sky: overcast at 6,000 feet	from the west-northwest (300°) at 6 knots	10+ mi	6,000 ft	1,442 ft	02:56 UTC
GIC Grangeville, ID	269 nm out, 19 nm south of the line	VFR Sky: overcast at 3,100 feet	from the north-northwest (340°) at 3 knots	10+ mi	3,100 ft	3,313 ft	02:35 UTC
DLN Dillon, MT	429 nm out, 7 nm southwest of the line	low IFR Sky: sky obscured at 900 feet Weather: light snow, mist	from the east-northeast (060°) at 4 knots	0.75 mi	900 ft	5,244 ft	02:53 UTC
COD Cody, WY	578 nm out, 11 nm northeast of the line	IFR Sky: overcast at 800 feet Weather: light rain, mist	from the north (360°) at 10 knots	6 mi	800 ft	5,102 ft	02:56 UTC
WRL Worland, WY	638 nm out, 2 nm southwest of the line	IFR Sky: overcast at 500 feet Weather: mist	from the north-northwest (330°) at 9 knots	3 mi	500 ft	4,251 ft	02:53 UTC
LSK Lusk, WY	807 nm out, 1 nm east of the line	no report just now				4,966 ft
AIA Alliance, NE	887 nm out, 6 nm south of the line	VFR	from the east (090°) at 9 knots	10+ mi	none	3,930 ft	02:53 UTC
LXN Lexington, NE	1046 nm out, 4 nm southwest of the line	VFR	from the southeast (140°) at 5 knots	10+ mi	none	2,412 ft	02:55 UTC
MHK Manhattan, KS	1216 nm out, 16 nm south of the line, tower	VFR	from the south-southwest (200°) at 10 knots	10+ mi	none	1,066 ft	02:52 UTC
FOE Topeka, KS	destination	VFR	from the south (180°) at 11 knots	10+ mi	none	1,077 ft	9:53 pm CDT (02:53 UTC)

The highest airport on this list sits at 5,244 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At FOE when you get there the forecast at the estimated arrival, 6:35 am CDT (11:35 UTC)

Wind from the south at 16 knots, gusting to 29, visibility more than 6 miles, a few clouds at 25,000 feet VFR

The whole forecast for FOE

From Sun 7:00 pm CDT (00:00 UTC): wind from the south at 11 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
From Sun 11:00 pm CDT (04:00 UTC): wind from the south at 16 knots, gusting to 29, visibility more than 6 miles, a few clouds at 25,000 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

No temporary flight restriction on or near this route right now.

Daylight

Sunset at BFI 6:27 pm PDT (01:27 UTC), at FOE 6:48 pm CDT (23:48 UTC) (civil twilight ends 7:15 pm CDT (00:15 UTC)). At 120 knots the arrival at FOE is before sunrise there (7:28 am CDT (12:28 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 northern Rockies · loop National Weather Service

Radar now, the southern Plains · 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, Topeka Regional.