Plan a flight · Sun 10:35 pm CDT (03:35 UTC)

Minneapolis-St Paul Intl/Wold-Chamberlain Airport to Boeing Fld/King County International MSP → BFI

1,212 nautical miles (1,394 statute miles) west on a straight line, true course 288°, about 288° magnetic at the departure end (variation 0E). At 120 knots that is 9 h 19 min at the quickest height in today's winds (4,500 ft, a 10-knot tailwind), arriving about 5:54 am PDT (12:54 UTC), after sunset at the destination. Right now MSP is VFR, wind from the south (180°) at 8 knots; BFI is 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: 27 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 1C: thunderstorms (a convective SIGMET) up to 30,000 ft, moving from the southwest at 40 knots, until 11:55 pm CDT (04:55 UTC). Near the route, 437 nm along the route.
as issued
```
WSUS32 KKCI 120255
MKCC WST 120255
CONVECTIVE SIGMET 1C
VALID UNTIL 0455Z
SD ND MT WY
FROM 30WSW DIK-50NW DPR-60WNW RAP-50ENE SHR-30WSW DIK
AREA TS MOV FROM 22040KT. TOPS TO FL300.
```
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 119 to 248 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 298 to 943 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 665 to 963 nm out.
AIRMET ZULU 2C: moderate icing up to 20,000 ft. Over the route from 725 to 1152 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 755 to 953 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 169 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 MSP.

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

B789 at 35,000 ft, 37 nm north, 8:57 pm CDT (01:57 UTC): light turbulence. 397 nm along the route, 37 nm north of the line.
as filed, and in English
```
DIK UA /OV DIK040030/TM 0157/FL350/TP B789/TB CONS LGT/ OCNL MOD CHOP/ NEG 370
```
Report
a routine report filed through DIK
Where
30 nm northeast (040°) of DIK
Time
01:57 UTC
Height
at 35,000 ft
Aircraft
B789
Turbulence
continuous light occasional moderate chop no at 37,000 ft
CL30 at 4,200 ft, 39 nm south, 10:16 pm CDT (03:16 UTC): no icing, overcast above 4,200 ft, remarks: during the descent ils runway 12. 874 nm along the route, 39 nm south of the line.
as filed, and in English
```
MSO UA /OV MSO/TM 0316/FL042/TP CL30/SK OVC042/WX 2 1/2SM/IC NEG/RM DURD ILS RY 12
```
Report
a routine report filed through MSO
Where
over MSO
Time
03:16 UTC
Height
at 4,200 ft
Aircraft
CL30
Sky
overcast from 4,200 ft
Weather
2, 1/2SM
Icing
none
Remarks
during the descent ils runway 12
BCS1 at 3,700 ft, 39 nm south, 8:47 pm CDT (01:47 UTC): snow, rain, remarks: during the descent ils runway 12. 874 nm along the route, 39 nm south of the line.
as filed, and in English
```
MSO UA /OV MSO/TM 0147/FL037/TP BCS1/SK 037/WX SN RA/RM DURD ILS RY 12
```
Report
a routine report filed through MSO
Where
over MSO
Time
01:47 UTC
Height
at 3,700 ft
Aircraft
BCS1
Sky
at 3,700 ft
Weather
snow, rain
Remarks
during the descent ils runway 12
C25B at 4,100 ft, 39 nm south, 7:36 pm CDT (00:36 UTC): no icing, overcast above 4,100 ft, remarks: during the descent ils runway 12. 874 nm along the route, 39 nm south of the line.
as filed, and in English
```
MSO UA /OV MSO/TM 0036/FL041/TP C25B/SK OVC041/IC NEG/RM DURD ILS RY 12
```
Report
a routine report filed through MSO
Where
over MSO
Time
00:36 UTC
Height
at 4,100 ft
Aircraft
C25B
Sky
overcast from 4,100 ft
Icing
none
Remarks
during the descent ils runway 12
E75L descending, 45 nm north, 8:06 pm CDT (01:06 UTC): overcast above 4,000 ft. 884 nm along the route, 45 nm north of the line.
as filed, and in English
```
GPI UA /OV KGPI/TM 0106/FLDURD/TP E75L/SK OVC040
```
Report
a routine report filed through GPI
Where
over KGPI
Time
01:06 UTC
Height
during the descent
Aircraft
E75L
Sky
overcast from 4,000 ft
SB20 at 16,000 ft, 17 nm north, 8:52 pm CDT (01:52 UTC): remarks: zse. 1162 nm along the route, 17 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
A321 at 13,500 ft, 41 nm south, 8:54 pm CDT (01:54 UTC): remarks: zse. At the destination end, 41 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
PC12 at 13,000 ft, 42 nm south, 7:42 pm CDT (00:42 UTC): remarks: zse. At the destination end, 42 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 15,000 ft, 42 nm south, 7:42 pm CDT (00:42 UTC): remarks: zse. At the destination end, 42 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

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 12 forecast points nearest it (MSP, AXN, ABR, DIK, MLS, GGW, BIL, GTF, GPI, 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	120° at 10 kt	−10 kt	1 °C	130 kt	9 h 19 min	5:54 am PDT (12:54 UTC)
6,500 ft	140° at 7 kt	−7 kt	5 °C	127 kt	9 h 33 min	6:08 am PDT (13:08 UTC)
8,500 ft	180° at 7 kt	−3 kt	3 °C	123 kt	9 h 51 min	6:26 am PDT (13:26 UTC)
10,500 ft	210° at 11 kt	+2 kt	-1 °C	118 kt	10 h 16 min	6:51 am PDT (13:51 UTC)
12,500 ft	220° at 16 kt	+6 kt	-4 °C	114 kt	10 h 38 min	7:13 am PDT (14:13 UTC)
14,500 ft	230° at 18 kt	+10 kt	-7 °C	110 kt	11 h 01 min	7:36 am PDT (14:36 UTC)
16,500 ft	230° at 21 kt	+13 kt	-11 °C	107 kt	11 h 20 min	7:55 am PDT (14:55 UTC)
18,000 ft FL180	230° at 24 kt	+16 kt	-13 °C	104 kt	11 h 39 min	8:14 am PDT (15:14 UTC)
24,000 ft FL240	230° at 25 kt	+16 kt	-24 °C	104 kt	11 h 39 min	8:14 am PDT (15:14 UTC)
30,000 ft FL300	230° at 26 kt	+17 kt	-37 °C	103 kt	11 h 46 min	8:21 am PDT (15:21 UTC)
34,000 ft FL340	240° at 36 kt	+28 kt	-42 °C	92 kt	13 h 10 min	9:45 am PDT (16:45 UTC)
39,000 ft FL390	240° at 48 kt	+39 kt	-46 °C	81 kt	14 h 58 min	11:33 am PDT (18:33 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
MSP	used from 0 nm out; 25 nm from the line	230/26	240/30 17°	240/24 12°	250/22 5°	250/35 -10°	260/36 -21°	250/41 -36°	250/49 -45°	260/58 -52°
AXN	used from 50 nm out; 42 nm from the line	100/14	250/21 14°	240/24 12°	240/31 5°	260/36 -10°	260/40 -21°	250/42 -36°	260/48 -45°	260/53 -50°
ABR	used from 149 nm out; 55 nm from the line	070/14	250/10 17°	270/16 11°	260/28 5°	260/36 -10°	260/41 -22°	270/33 -37°	260/42 -42°	260/50 -48°
DIK	used from 298 nm out; 94 nm from the line		150/24 7°	200/38 6°	220/53 0°	230/51 -9°	230/49 -21°	240/37 -37°	240/47 -44°	250/65 -48°
MLS	used from 497 nm out; 37 nm from the line		150/23 2°	190/29 4°	210/44 2°	220/32 -10°	210/36 -21°	200/48 -37°	230/63 -40°	240/71 -47°
GGW	used from 596 nm out; 78 nm from the line		110/23 0°	130/20 -2°	170/24 -3°	230/44 -11°	220/51 -21°	210/52 -39°	220/64 -44°	240/85 -48°
BIL	used from 645 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°
GTF	used from 695 nm out; 49 nm from the line		070/11	080/15 -7°	110/19 -9°	190/25 -14°	200/34 -23°	200/54 -39°	220/66 -40°	220/77 -44°
GPI	used from 844 nm out; 49 nm from the line		070/19 -5°	100/16 -7°	080/10 -8°	130/8 -19°	170/37 -28°	200/50 -40°	210/43 -40°	220/41 -42°
GEG	used from 943 nm out; 50 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 1092 nm out; 66 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 1142 nm out; 46 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
MSP Minneapolis, MN	departure	VFR Sky: a broken layer at 25,000 feet	from the south (180°) at 8 knots	10+ mi	25,000 ft	841 ft	9:53 pm CDT (02:53 UTC)
LJF Litchfield, MN	60 nm out, 5 nm southeast of the line	reported, no category	calm	10+ mi	none	1,139 ft	03:15 UTC
BTN Britton, SD	199 nm out, 0 nm northwest of the line	low IFR Sky: overcast at 400 feet	from the north (010°) at 10 knots, gusting to 17	10+ mi	400 ft	1,318 ft	03:10 UTC
ASY Ashley, ND	268 nm out, 4 nm south of the line	no report just now				2,034 ft
DIK Dickinson, ND	417 nm out, 11 nm north of the line	low IFR Sky: overcast at 400 feet Weather: rain, mist	from the northeast (050°) at 16 knots, gusting to 23	5 mi	400 ft	2,592 ft	02:56 UTC
JDN Jordan, MT	586 nm out, 14 nm north of the line	reported, no category	from the northeast (050°) at 14 knots		none	2,667 ft	02:48 UTC
LWT Lewistown, MT	685 nm out, 16 nm south of the line	no report just now				4,170 ft
GTF Great Falls, MT	765 nm out, 5 nm northwest of the line, tower	low IFR Sky: a few clouds at 300 feet, overcast at 700 feet Weather: light snow, mist	from the north-northeast (020°) at 10 knots	0.75 mi	700 ft	3,680 ft	02:53 UTC
THM Thompson Falls, MT	924 nm out, 4 nm west of the line	no report just now				2,467 ft
GEG Spokane, WA	1023 nm out, 4 nm east of the line, tower	VFR Sky: a broken layer at 6,000 feet, a broken layer at 11,000 feet	from the northeast (040°) at 10 knots	10+ mi	6,000 ft	2,385 ft	02:53 UTC
MWH Moses Lake, WA	1092 nm out, 24 nm south 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
BFI Seattle, WA	destination	VFR	calm	10+ mi	none	21 ft	7:53 pm PDT (02:53 UTC)

The highest airport on this list sits at 4,170 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, 5:54 am PDT (12:54 UTC)

Wind calm, visibility more than 6 miles, patches of fog, clear skies VFR

The whole forecast for BFI

From Sun 8:00 pm PDT (03:00 UTC): wind calm, visibility more than 6 miles, clear skies
From Mon 3:00 am PDT (10:00 UTC): wind calm, 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

The forecast for MSP, the departure

From Sun 9:00 pm CDT (02:00 UTC): wind from the south at 7 knots, visibility more than 6 miles, a broken layer at 20,000 feet
From Mon 6:00 am CDT (11:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 20,000 feet
From Mon 10:00 pm CDT (03:00 UTC): wind from the northwest at 9 knots, visibility more than 6 miles, a few clouds at 2,500 feet, a broken layer at 15,000 feet

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

6/6656 ANOKA, MN, Monday, October 5, 2026 through Monday, October 19, 2026 Local 16 nm from the route, at the departure end · security · until 19 October · ZMP

Daylight

Sunset at MSP 6:33 pm CDT (23:33 UTC), at BFI 6:27 pm PDT (01:27 UTC) (civil twilight ends 6:58 pm PDT (01:58 UTC)). At 120 knots the arrival at BFI is before sunrise there (7:23 am PDT (14:23 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 upper Mississippi valley · loop National Weather Service

Radar now, the northern Rockies · loop National Weather Service

Radar now, the Pacific Northwest · 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: Minneapolis-St Paul Intl/Wold-Chamberlain Airport, Boeing Fld/King County International.