Plan a flight · Mon 8:57 am CDT (13:57 UTC)

Appleton International to Seattle-Tacoma International ATW → SEA

1,415 nautical miles (1,628 statute miles) west on a straight line, true course 290°, about 292° magnetic at the departure end (variation 2W). At 120 knots that is 12 h 06 min at the quickest height in today's winds (4,500 ft, a 3-knot headwind), arriving about 7:03 pm PDT (02:03 UTC), after sunset at the destination. Right now ATW is VFR, wind from the south (180°) at 6 knots; SEA is VFR, wind from the southeast (130°) at 7 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

SIGMET C20C: thunderstorms (a convective SIGMET) up to 37,000 ft, moving from the southwest at 40 knots, until 10:55 am CDT (15:55 UTC). Over the route from 438 to 518 nm out.
as issued
```
WSUS32 KKCI 121355
MKCC WST 121355
CONVECTIVE SIGMET 20C
VALID UNTIL 1555Z
SD ND
FROM 80W GFK-40WNW FAR-40W ABR-50ENE DPR-30S BIS-80W GFK
AREA TS MOV FROM 21040KT. TOPS TO FL370.
```
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 259 to 1046 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 558 to 737 nm out.
AIRMET ZULU 2C: moderate icing up to 18,000 ft. Over the route from 747 to 1225 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 887 to 1116 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the route from 1036 to 1365 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 ATW.

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

E170 at 15,000 ft, 8 nm south, 6:56 am CDT (11:56 UTC): moderate chop turbulence. At the departure end, 8 nm south of the line.
as filed, and in English
```
Y50 UA /OV Y50330025/TM 1156/FL150/TP E170/TB MOD CHOP
```
Report
a routine report filed through Y50
Where
25 nm northwest (330°) of Y50
Time
11:56 UTC
Height
at 15,000 ft
Aircraft
E170
Turbulence
moderate chop
SR22 at 4,000 ft, 2 nm northeast, 7:46 am CDT (12:46 UTC): no turbulence, no icing, clear from 4,000 ft to 60,000 ft, remarks: clear and A million. 249 nm along the route, 2 nm northeast of the line.
as filed, and in English
```
STC UA /OV KSTC/TM 1246/FL040/TP SR22/SK SKC/TB NEG/IC NEG/RM CLEAR AND A MILLION
```
Report
a routine report filed through STC
Where
over KSTC
Time
12:46 UTC
Height
at 4,000 ft
Aircraft
SR22
Sky
clear
Turbulence
none
Icing
none
Remarks
clear and A million
B190 at 1,100 ft, 50 nm north, 7:30 am CDT (12:30 UTC): overcast from 1,200 ft to 2,700 ft, remarks: during the descent the ILS approach to runway 36. 379 nm along the route, 50 nm north of the line.
as filed, and in English
```
FAR UA /OV KFAR180002/TM 1230/FL011/TP B190/SK OVC012-TOP027/RM DURD ILS36
```
Report
a routine report filed through FAR
Where
2 nm south (180°) of KFAR
Time
12:30 UTC
Height
at 1,100 ft
Aircraft
B190
Sky
overcast from 1,200 ft, tops 2,700 ft
Remarks
during the descent the ILS approach to runway 36
A321 at 1,200 ft, 42 nm north, 7:16 am CDT (12:16 UTC): overcast from 1,200 ft to 2,900 ft. 379 nm along the route, 42 nm north of the line.
as filed, and in English
```
FAR UA /OV FAR/TM 1216/FL012/TP A321/SK OVC012-TOP029
```
Report
a routine report filed through FAR
Where
over FAR
Time
12:16 UTC
Height
at 1,200 ft
Aircraft
A321
Sky
overcast from 1,200 ft, tops 2,900 ft
E75L at 1,300 ft, 42 nm north, 6:20 am CDT (11:20 UTC): overcast from 1,300 ft to 2,900 ft. 379 nm along the route, 42 nm north of the line.
as filed, and in English
```
FAR UA /OV FAR/TM 1120/FL013/TP E75L/SK OVC013-TOP029
```
Report
a routine report filed through FAR
Where
over FAR
Time
11:20 UTC
Height
at 1,300 ft
Aircraft
E75L
Sky
overcast from 1,300 ft, tops 2,900 ft
C525 at 3,500 ft, 9 nm north, 8:43 am CDT (13:43 UTC): a trace of rime icing, 3 °C, remarks: during the descent. 528 nm along the route, 9 nm north of the line.
as filed, and in English
```
BIS UA /OV BIS/TM 1343/FL035/TP C525/SK BASES 020 TOPS 055/TA 03/IC TR RIME/RM DURD
```
Report
a routine report filed through BIS
Where
over BIS
Time
13:43 UTC
Height
at 3,500 ft
Aircraft
C525
Sky
bases 2,000 ft tops 5,500 ft
Temperature
3 °C
Icing
tr rime
Remarks
during the descent
SR22 at 7,000 ft, 22 nm south, 8:37 am CDT (13:37 UTC): no turbulence, no icing, clear from 7,000 ft to 60,000 ft. 528 nm along the route, 22 nm south of the line.
as filed, and in English
```
BIS UA /OV BIS170030/TM 1337/FL070/TP SR22/SK SKC/TB NEG/IC NEG
```
Report
a routine report filed through BIS
Where
30 nm south (170°) of BIS
Time
13:37 UTC
Height
at 7,000 ft
Aircraft
SR22
Sky
clear
Turbulence
none
Icing
none
PA46 at 7,000 ft, 9 nm north, 8:11 am CDT (13:11 UTC): remarks: during the climb. 528 nm along the route, 9 nm north of the line.
as filed, and in English
```
BIS UA /OV BIS/TM 1311/FL070/TP PA46/SK TOPS 062/RM DURC
```
Report
a routine report filed through BIS
Where
over BIS
Time
13:11 UTC
Height
at 7,000 ft
Aircraft
PA46
Sky
tops 6,200 ft
Remarks
during the climb
P46T descending, 8 nm northeast, 7:41 am CDT (12:41 UTC): overcast from 2,000 ft to 5,600 ft. 538 nm along the route, 8 nm northeast of the line.
as filed, and in English
```
BIS UA /OV KBIS/TM 1241/FLDURD/TP P46T/SK OVC020-TOP056
```
Report
a routine report filed through BIS
Where
over KBIS
Time
12:41 UTC
Height
during the descent
Aircraft
P46T
Sky
overcast from 2,000 ft, tops 5,600 ft
CRJ7 at 29,500 ft, 1 nm northwest, 7:45 am CDT (12:45 UTC): light chop turbulence. 648 nm along the route, 1 nm northwest of the line.
as filed, and in English
```
DIK UA /OV DIK270030/TM 1245/FL295/TP CRJ7/SK TOP 295/TB LGT CHOP/ZLC
```
Report
a routine report filed through DIK
Where
30 nm west (270°) of DIK
Time
12:45 UTC
Height
at 29,500 ft
Aircraft
CRJ7
Sky
top 29,500 ft
Turbulence
light chop/zlc
C340 at 24,000 ft, 25 nm south, 5:59 am CDT (10:59 UTC): light to moderate icing, -22 °C. 667 nm along the route, 25 nm south of the line.
as filed, and in English
```
DIK UA /OV DIK240054/TM 1059/FL240/TP C340/TA M22/IC LGT-MOD CLR /ZLC
```
Report
a routine report filed through DIK
Where
54 nm southwest (240°) of DIK
Time
10:59 UTC
Height
at 24,000 ft
Aircraft
C340
Temperature
−22 °C
Icing
light to moderate clear zlc
A319 at 7,500 ft, 7 nm southeast, 8:41 am CDT (13:41 UTC): overcast from 30,000 ft to 7,500 ft. 976 nm along the route, 7 nm southeast of the line.
as filed, and in English
```
GTF UA /OV 180010/TM 1341/FL075/TP A319/SK OVC003-TOPS075
```
Report
a routine report filed through GTF
Where
wind from 180° at 10 knots
Time
13:41 UTC
Height
at 7,500 ft
Aircraft
A319
Sky
overcast from 300 ft, tops 7,500 ft
B752 at 41,000 ft, 48 nm south, 7:31 am CDT (12:31 UTC): light to moderate turbulence above 41,000 ft. 986 nm along the route, 48 nm south of the line.
as filed, and in English
```
HLN UA /OV HLN009010/TM 1231/FL410/TP B752/TB CONS LGT OCNL MOD 410/ZLC
```
Report
a routine report filed through HLN
Where
10 nm north (009°) of HLN
Time
12:31 UTC
Height
at 41,000 ft
Aircraft
B752
Turbulence
continuous light occasional moderate 410/ZLC
A320 at 25,000 ft, 11 nm south, 8:25 am CDT (13:25 UTC): light to moderate chop turbulence above 25,000 ft. 1146 nm along the route, 11 nm south of the line.
as filed, and in English
```
MSO UA /OV MLP/TM 1325/FL250/TP A320/TB CONS LGT OCNL MOD CHOP 250/ZLC
```
Report
a routine report filed through MSO
Where
over MLP
Time
13:25 UTC
Height
at 25,000 ft
Aircraft
A320
Turbulence
continuous light occasional moderate chop 250/ZLC

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 14 forecast points nearest it (GRB, LSE, 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	240° at 4 kt	+3 kt	0 °C	117 kt	12 h 06 min	7:03 pm PDT (02:03 UTC)
6,500 ft	240° at 6 kt	+4 kt	6 °C	116 kt	12 h 12 min	7:09 pm PDT (02:09 UTC)
8,500 ft	240° at 10 kt	+6 kt	5 °C	114 kt	12 h 25 min	7:22 pm PDT (02:22 UTC)
10,500 ft	240° at 12 kt	+8 kt	0 °C	112 kt	12 h 38 min	7:35 pm PDT (02:35 UTC)
12,500 ft	240° at 13 kt	+10 kt	-2 °C	110 kt	12 h 52 min	7:49 pm PDT (02:49 UTC)
14,500 ft	240° at 15 kt	+11 kt	-6 °C	109 kt	12 h 59 min	7:56 pm PDT (02:56 UTC)
16,500 ft	240° at 16 kt	+12 kt	-10 °C	108 kt	13 h 06 min	8:03 pm PDT (03:03 UTC)
18,000 ft FL180	240° at 17 kt	+13 kt	-13 °C	107 kt	13 h 13 min	8:10 pm PDT (03:10 UTC)
24,000 ft FL240	240° at 22 kt	+17 kt	-25 °C	103 kt	13 h 44 min	8:41 pm PDT (03:41 UTC)
30,000 ft FL300	240° at 25 kt	+19 kt	-37 °C	101 kt	14 h 01 min	8:58 pm PDT (03:58 UTC)
34,000 ft FL340	250° at 37 kt	+31 kt	-40 °C	89 kt	15 h 54 min	10:51 pm PDT (05:51 UTC)
39,000 ft FL390	250° at 47 kt	+42 kt	-45 °C	78 kt	18 h 08 min	1:05 am PDT (08:05 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
GRB	used from 0 nm out; 41 nm from the line	250/32	250/22 17°	240/18 8°	280/21 6°	280/34 -11°	280/35 -21°	280/39 -37°	270/52 -45°	290/60 -49°
LSE	used from 50 nm out; 67 nm from the line	250/25	240/21 17°	240/28 11°	250/28 5°	280/24 -10°	280/31 -21°	260/35 -37°	270/45 -43°	280/59 -47°
MSP	used from 149 nm out; 39 nm from the line	250/12	250/17 17°	240/26 12°	250/26 5°	280/26 -9°	280/32 -22°	270/37 -38°	280/47 -41°	280/55 -48°
AXN	used from 249 nm out; 33 nm from the line	110/6	260/10 16°	240/17 12°	250/20 5°	260/29 -10°	260/35 -22°	260/29 -38°	270/48 -41°	270/61 -48°
ABR	used from 399 nm out; 50 nm from the line	080/12	210/12 17°	220/22 12°	230/26 5°	220/28 -10°	230/41 -21°	250/36 -36°	260/47 -39°	260/63 -47°
DIK	used from 498 nm out; 96 nm from the line		190/12 5°	230/29 7°	220/33 1°	220/43 -11°	210/47 -23°	220/53 -33°	240/56 -40°	250/72 -47°
MLS	used from 697 nm out; 50 nm from the line		290/17 -1°	250/18 0°	230/25 0°	220/31 -11°	220/32 -24°	220/50 -32°	220/60 -38°	230/71 -46°
GGW	used from 797 nm out; 68 nm from the line		100/7 -1°	070/10 -3°	190/6 -4°	210/34 -10°	230/33 -24°	210/48 -37°	230/65 -40°	230/71 -46°
BIL	used from 847 nm out; 98 nm from the line		300/14	270/19 -2°	260/26 -2°	220/28 -13°	210/51 -25°	220/56 -33°	220/61 -39°	220/72 -45°
GTF	used from 897 nm out; 50 nm from the line		L/V	L/V -7°	240/8 -8°	240/30 -14°	240/40 -28°	210/52 -38°	210/76 -38°	220/72 -43°
GPI	used from 1046 nm out; 45 nm from the line		090/8 -4°	140/7 -7°	090/10 -8°	110/10 -19°	210/25 -30°	200/24 -40°	210/31 -39°	210/35 -42°
GEG	used from 1146 nm out; 50 nm from the line		060/7 -2°	070/12 -6°	050/8 -8°	120/11 -21°	110/18 -33°	030/22 -37°	040/6 -38°	240/7 -41°
YKM	used from 1295 nm out; 64 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 1345 nm out; 45 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
ATW Appleton, WI	departure	VFR Sky: scattered clouds at 12,000 feet	from the south (180°) at 6 knots	10+ mi	none	918 ft	8:45 am CDT (13:45 UTC)
EAU Eau Claire, WI	130 nm out, 7 nm southwest of the line, tower	VFR	calm	10+ mi	none	913 ft	12:56 UTC
STC St Cloud, MN	249 nm out, 2 nm northeast of the line, tower	VFR	from the northeast (050°) at 9 knots, gusting to 17	10+ mi	none	1,030 ft	13:53 UTC
AXN Alexandria, MN	309 nm out, 5 nm northeast of the line	IFR Sky: overcast at 700 feet	from the northeast (050°) at 9 knots	10+ mi	700 ft	1,425 ft	13:53 UTC
BIS Bismarck, ND	538 nm out, 8 nm northeast of the line, tower	marginal VFR Sky: scattered clouds at 600 feet, overcast at 1,100 feet Weather: mist	from the north (360°) at 7 knots	4 mi	1,100 ft	1,661 ft	13:52 UTC
GDV Glendive, MT	707 nm out, 5 nm east of the line	low IFR Sky: overcast at 400 feet Weather: light rain, mist	from the northeast (040°) at 10 knots	6 mi	400 ft	2,458 ft	12:56 UTC
JDN Jordan, MT	787 nm out, 5 nm northwest of the line	reported, no category	from the northwest (320°) at 9 knots		none	2,667 ft	13:48 UTC
GTF Great Falls, MT	966 nm out, 6 nm southwest of the line, tower	low IFR Sky: overcast at 400 feet Weather: mist	from the west-northwest (290°) at 5 knots	0.25 mi	400 ft	3,680 ft	13:53 UTC
THM Thompson Falls, MT	1126 nm out, 5 nm southwest of the line	no report just now				2,467 ft
GEG Spokane, WA	1225 nm out, 5 nm east of the line, tower	VFR Sky: scattered clouds at 3,800 feet, a broken layer at 8,000 feet, a broken layer at 11,000 feet	from the east (100°) at 9 knots	10+ mi	8,000 ft	2,385 ft	13:53 UTC
MWH Moses Lake, WA	1295 nm out, 22 nm south of the line, tower	VFR	from the north (010°) at 4 knots	10+ mi	none	1,188 ft	13:52 UTC
SEA Seattle, WA	destination	VFR Sky: a few clouds at 8,000 feet	from the southeast (130°) at 7 knots	10+ mi	none	432 ft	6:53 am PDT (13:53 UTC)

The highest airport on this list sits at 3,680 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At SEA when you get there the forecast at the estimated arrival, 7:03 pm PDT (02:03 UTC)

Wind from the west at 6 knots, visibility more than 6 miles, clear skies VFR

The whole forecast for SEA

From Mon 5:00 am PDT (12:00 UTC): wind from the southeast at 5 knots, visibility more than 6 miles, clear skies
From Mon 9:00 am PDT (16:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
From Mon 11:00 am PDT (18:00 UTC): wind from the west at 6 knots, visibility more than 6 miles, clear skies
From Mon 8:00 pm PDT (03:00 UTC): wind from the south at 4 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
From Tue 4:00 am PDT (11:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, overcast at 10,000 feet

The forecast for ATW, the departure

From Mon 7:00 am CDT (12:00 UTC): wind from the south-southwest at 8 knots, visibility more than 6 miles, scattered clouds at 20,000 feet
From Mon 8:00 pm CDT (01:00 UTC): wind from the south-southwest at 5 knots, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 12,000 feet
30% chance between Mon 8:00 pm CDT (01:00 UTC) and 11:00 pm CDT (04:00 UTC): light rain showers, a broken layer at 6,000 feet
From Mon 11:00 pm CDT (04:00 UTC): wind from the south-southwest at 6 knots, visibility more than 6 miles, scattered clouds at 4,000 feet
From Tue 4:00 am CDT (09:00 UTC): wind from the west at 7 knots, visibility more than 6 miles, scattered clouds at 2,500 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 11 nm from the route, 219 nm along the route · security · until 19 October · ZMP
6/8927 Kalispell, MT, Wednesday, October 14, 2026 through Wednesday, October 14, 2026 Local 13 nm from the route, 1076 nm along the route · a VIP movement · starts Wednesday 14 October · ZSE
6/8923 Kalispell, MT, Wednesday, October 14, 2026 through Wednesday, October 14, 2026 Local 9 nm from the route, 1086 nm along the route · a VIP movement · starts Wednesday 14 October · ZLC

Daylight

Sunset at ATW 6:15 pm CDT (23:15 UTC), at SEA 6:25 pm PDT (01:25 UTC) (civil twilight ends 6:56 pm PDT (01:56 UTC)). At 120 knots the arrival at SEA is after sunset there (6:27 pm PDT (01:27 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: Appleton International, Seattle-Tacoma International.