Plan a flight · Sun 5:31 pm PDT (00:31 UTC)

Seattle-Tacoma International to Kansas City International SEA → MCI

1,291 nautical miles (1,486 statute miles) east on a straight line, true course 102°, about 086° magnetic at the departure end (variation 16E). At 120 knots that is 8 h 17 min at the quickest height in today's winds (39,000 ft, a 36-knot tailwind), arriving about 3:48 am CDT (08:48 UTC), after sunset at the destination. Right now SEA is VFR, wind from the north-northwest (340°) at 10 knots; MCI is VFR, wind from the south (170°) at 9 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: 2,247 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 W70W: thunderstorms (a convective SIGMET) up to 32,000 ft, moving from the southwest at 40 knots, until 6:55 pm PDT (01:55 UTC). Over the route from 576 to 755 nm out.

as issued

WSUS33 KKCI 112355
MKCW WST 112355
CONVECTIVE SIGMET 70W
VALID UNTIL 0155Z
MT WY
FROM 30SSW MLS-60WNW BFF-40SSE OCS-10S BPI-10S BIL-30SSW MLS
AREA TS MOV FROM 22040KT. TOPS TO FL320.

AIRMET ZULU 2C: moderate icing up to 14,000 ft. Over the route from 119 to 328 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 189 to 695 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 258 to 894 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 308 to 676 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 467 to 735 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 497 to 685 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 SEA.

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

E75L at 14,000 ft, 35 nm northeast, 4:22 pm PDT (23:22 UTC): moderate turbulence from 14,000 ft to 21,000 ft, remarks: during the climb zlc. 338 nm along the route, 35 nm northeast of the line.
as filed, and in English
```
MSO UA /OV 32S/TM 2322/FL140/TP E75L/TB MOD 140-210/RM DURC /ZLC
```
Report
a routine report filed through MSO
Where
over 32S
Time
23:22 UTC
Height
at 14,000 ft
Aircraft
E75L
Turbulence
moderate from 14,000 ft to 21,000 ft
Remarks
during the climb zlc
B738 at 33,000 ft, 49 nm south, 4:57 pm PDT (23:57 UTC): moderate chop turbulence from 31,000 ft to 33,000 ft. 467 nm along the route, 49 nm south of the line.
as filed, and in English
```
IDA UA /OV DBS015030/TM 2357/FL330/TP B738/TB MOD CHOP 310-330 /ZLC
```
Report
a routine report filed through IDA
Where
30 nm north (015°) of DBS
Time
23:57 UTC
Height
at 33,000 ft
Aircraft
B738
Turbulence
moderate chop from 31,000 ft to 33,000 ft zlc
C172 at 5,500 ft, 5 nm west, 3:17 pm PDT (22:17 UTC): a trace of rime icing, 0 °C, remarks: zse. 189 nm along the route, 5 nm west of the line.
as filed, and in English
```
PUW UA /OV PUW250030/TM 2217/FL055/TP C172/TA 00/IC TRACE RIME/RM -ZSE
```
Report
a routine report filed through PUW
Where
30 nm west (250°) of PUW
Time
22:17 UTC
Height
at 5,500 ft
Aircraft
C172
Temperature
0 °C
Icing
trace rime
Remarks
zse
B738 at 24,000 ft, 31 nm northeast, 4:13 pm PDT (23:13 UTC): remarks: snow top flight level at 24,000 ft zlc. 437 nm along the route, 31 nm northeast of the line.
as filed, and in English
```
BZN UA /OV BZN270030/TM 2313/FL240/TP B738/RM SN TOP FL 240 /ZLC
```
Report
a routine report filed through BZN
Where
30 nm west (270°) of BZN
Time
23:13 UTC
Height
at 24,000 ft
Aircraft
B738
Remarks
snow top flight level at 24,000 ft zlc
B737 descending, 32 nm northeast, 5:28 pm PDT (00:28 UTC): scattered clouds above 8,000 ft, fog, snow, remarks: broke out about 100FT above mins. 467 nm along the route, 32 nm northeast 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
BE9T at 17,500 ft, 20 nm northeast, 3:40 pm PDT (22:40 UTC): no turbulence, light icing, -6 °C, remarks: ZDVWC-22. 695 nm along the route, 20 nm northeast of the line.
as filed, and in English
```
GCC UA /OV CZI020012/TM 2240/FL175/TP BE9T/TA M06/TB NEG/IC LGT MIX /RM ZDVWC-22
```
Report
a routine report filed through GCC
Where
12 nm north (020°) of CZI
Time
22:40 UTC
Height
at 17,500 ft
Aircraft
BE9T
Temperature
−6 °C
Turbulence
none
Icing
light mix
Remarks
ZDVWC-22
A21N at 35,000 ft, 42 nm north, 3:47 pm PDT (22:47 UTC): no turbulence, remarks: ZDVWC-32. 725 nm along the route, 42 nm north of the line.
as filed, and in English
```
GCC UA /OV GCC/TM 2247/FL350/TP A21N/TB NEG /RM ZDVWC-32
```
Report
a routine report filed through GCC
Where
over GCC
Time
22:47 UTC
Height
at 35,000 ft
Aircraft
A21N
Turbulence
none
Remarks
ZDVWC-32
A321 at 32,000 ft, 44 nm southwest, 2:58 pm PDT (21:58 UTC): light chop turbulence, remarks: zdvwc. 1003 nm along the route, 44 nm southwest of the line.
as filed, and in English
```
LBF UA /OV LBF/TM 2158/FL320/TP A321/TB OCNL LGT CHOP/RM ZDVWC
```
Report
a routine report filed through LBF
Where
over LBF
Time
21:58 UTC
Height
at 32,000 ft
Aircraft
A321
Turbulence
occasional light chop
Remarks
zdvwc

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 12 forecast points nearest it (SEA, YKM, LWS, DLN, BIL, LND, RAP, BFF, ONL, GRI, OMA, 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	140° at 8 kt	+8 kt	16 °C	112 kt	11 h 32 min	7:03 am CDT (12:03 UTC)
7,500 ft	160° at 7 kt	+6 kt	5 °C	114 kt	11 h 19 min	6:50 am CDT (11:50 UTC)
9,500 ft	190° at 7 kt	+3 kt	3 °C	117 kt	11 h 02 min	6:33 am CDT (11:33 UTC)
11,500 ft	210° at 12 kt	0	0 °C	120 kt	10 h 46 min	6:17 am CDT (11:17 UTC)
13,500 ft	210° at 14 kt	−2 kt	-3 °C	122 kt	10 h 35 min	6:06 am CDT (11:06 UTC)
15,500 ft	220° at 17 kt	−4 kt	-7 °C	124 kt	10 h 25 min	5:56 am CDT (10:56 UTC)
17,500 ft	220° at 19 kt	−6 kt	-11 °C	126 kt	10 h 15 min	5:46 am CDT (10:46 UTC)
18,000 ft FL180	220° at 19 kt	−7 kt	-12 °C	127 kt	10 h 10 min	5:41 am CDT (10:41 UTC)
24,000 ft FL240	230° at 29 kt	−14 kt	-22 °C	134 kt	9 h 38 min	5:09 am CDT (10:09 UTC)
30,000 ft FL300	220° at 36 kt	−13 kt	-35 °C	133 kt	9 h 42 min	5:13 am CDT (10:13 UTC)
34,000 ft FL340	240° at 46 kt	−25 kt	-40 °C	145 kt	8 h 54 min	4:25 am CDT (09:25 UTC)
39,000 ft FL390	250° at 50 kt	−36 kt	-46 °C	156 kt	8 h 17 min	3:48 am CDT (08:48 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; 25 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; 36 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°
LWS	used from 149 nm out; 53 nm from the line	010/5	050/14 -2°	040/12 -6°	160/7 -10°	190/30 -22°	200/54 -27°	200/48 -35°	210/40 -37°	230/32 -41°
DLN	used from 348 nm out; 55 nm from the line			080/10 -3°	180/8 -3°	180/23 -14°	200/58 -22°	200/80 -36°	220/85 -41°	230/81 -45°
BIL	used from 497 nm out; 88 nm from the line		080/24	130/14 -1°	180/33 0°	210/43 -10°	220/58 -21°	200/55 -36°	220/75 -44°	240/83 -48°
LND	used from 646 nm out; 104 nm from the line			180/33 10°	190/50 3°	210/59 -9°	200/50 -21°	190/41 -34°	230/55 -39°	240/65 -47°
RAP	used from 695 nm out; 128 nm from the line		120/15 12°	180/22 11°	220/26 5°	230/35 -9°	240/40 -22°	240/50 -37°	240/51 -41°	240/47 -47°
BFF	used from 795 nm out; 71 nm from the line		120/24	180/31 13°	210/26 7°	230/25 -7°	240/41 -20°	230/52 -36°	250/56 -41°	260/57 -45°
ONL	used from 944 nm out; 103 nm from the line		200/20 17°	230/26 14°	240/21 7°	250/27 -9°	260/32 -19°	240/44 -34°	240/56 -41°	250/62 -51°
GRI	used from 1043 nm out; 31 nm from the line		210/31 19°	240/21 14°	240/17 6°	260/27 -7°	260/34 -18°	240/45 -32°	250/56 -40°	260/62 -51°
OMA	used from 1192 nm out; 83 nm from the line	190/34	230/34 19°	250/25 12°	250/18 6°	250/22 -7°	250/28 -19°	260/34 -32°	260/39 -41°	280/56 -51°
MKC	used from 1242 nm out; 36 nm from the line	200/28	220/30 16°	270/20 11°	280/22 7°	260/27 -6°	270/27 -18°	280/38 -32°	270/38 -40°	280/50 -52°

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
SEA Seattle, WA	departure	VFR Sky: a few clouds at 2,000 feet, a few clouds at 5,000 feet	from the north-northwest (340°) at 10 knots	10+ mi	none	432 ft	4:53 pm PDT (23:53 UTC)
MWH Moses Lake, WA	119 nm out, 14 nm northeast of the line, tower	VFR Sky: a broken layer at 10,000 feet	from the east-northeast (070°) at 14 knots	10+ mi	10,000 ft	1,188 ft	23:52 UTC
LWS Lewiston, ID	228 nm out, 10 nm southwest of the line, tower	VFR Sky: overcast at 6,000 feet	from the west (270°) at 7 knots	10+ mi	6,000 ft	1,442 ft	23:56 UTC
HRF Hamilton, MT	348 nm out, 19 nm north of the line	marginal VFR Sky: a broken layer at 1,200 feet, overcast at 2,100 feet	from the north (360°) at 11 knots	8 mi	1,200 ft	3,635 ft	00:15 UTC
RVF Twin Bridges, MT	427 nm out, 3 nm northeast of the line	low IFR Sky: sky obscured at 500 feet Weather: freezing fog	from the north-northeast (030°) at 24 knots, gusting to 29	0.5 mi	500 ft	4,788 ft	00:10 UTC
COD Cody, WY	576 nm out, 8 nm south of the line	marginal VFR Sky: overcast at 1,600 feet	from the northeast (040°) at 10 knots	10+ mi	1,600 ft	5,102 ft	23:56 UTC
BYG Buffalo, WY	676 nm out, 24 nm north of the line	low IFR Sky: a broken layer at 400 feet, overcast at 1,200 feet	from the north-northeast (020°) at 5 knots	7 mi	400 ft	4,970 ft	23:53 UTC
CDR Chadron, NE	854 nm out, 6 nm northeast of the line	VFR	from the north-northeast (030°) at 10 knots	10+ mi	none	3,297 ft	23:53 UTC
BBW Broken Bow, NE	1033 nm out, 1 nm west of the line	VFR	from the north (360°) at 9 knots	10+ mi	none	2,546 ft	23:53 UTC
GRI Grand Island, NE	1103 nm out, 6 nm north of the line, tower	VFR	from the south (170°) at 8 knots	10+ mi	none	1,847 ft	23:53 UTC
STJ St Joseph, MO	1272 nm out, 20 nm northeast of the line, tower	VFR	from the south-southeast (160°) at 10 knots	10+ mi	none	826 ft	23:53 UTC
MCI Kansas City, MO	destination	VFR Sky: scattered clouds at 25,000 feet	from the south (170°) at 9 knots	10+ mi	none	1,027 ft	6:53 pm CDT (23:53 UTC)

The highest airport on this list sits at 5,102 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At MCI when you get there the forecast at the estimated arrival, 3:48 am CDT (08:48 UTC)

Wind from the south at 11 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 25,000 feet VFR

The whole forecast for MCI

From Sun 7:00 pm CDT (00:00 UTC): wind from the south at 11 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 25,000 feet
From Mon 9:00 am CDT (14:00 UTC): wind from the south-southwest at 17 knots, gusting to 26, visibility more than 6 miles, scattered clouds at 25,000 feet

The forecast for SEA, the departure

From Sun 5:00 pm PDT (00:00 UTC): wind from the north at 12 knots, gusting to 20, visibility more than 6 miles, a few clouds at 2,000 feet, a few clouds at 5,000 feet
From Sun 8:00 pm PDT (03:00 UTC): wind from the northeast at 6 knots, visibility more than 6 miles, clear skies
From Mon 3:00 am PDT (10:00 UTC): wind from the southeast at 4 knots, 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 4 knots, 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 northwest at 5 knots, visibility more than 6 miles, scattered clouds at 25,000 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 SEA 6:27 pm PDT (01:27 UTC), at MCI 6:46 pm CDT (23:46 UTC) (civil twilight ends 7:13 pm CDT (00:13 UTC)). At 120 knots the arrival at MCI is before sunrise there (7:25 am CDT (12:25 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 upper Mississippi valley · 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: Seattle-Tacoma International, Kansas City International.