Plan a flight · Mon 1:42 am EDT (05:42 UTC)

Charleston Afb/Intl Airport to Seattle-Tacoma International CHS → SEA

2,095 nautical miles (2,410 statute miles) northwest on a straight line, true course 307°, about 314° magnetic at the departure end (variation 7W). At 120 knots that is 18 h 04 min at the quickest height in today's winds (4,500 ft, a 4-knot headwind), arriving about 4:46 pm PDT (23:46 UTC). Right now CHS is VFR, wind from the west-southwest (250°) at 4 knots; SEA is VFR, wind from the east (090°) at 6 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: 694 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 8C: thunderstorms (a convective SIGMET) up to 32,000 ft, moving from the southwest at 40 knots, until 2:55 am EDT (06:55 UTC). Over the route from 1267 to 1317 nm out.

as issued

WSUS32 KKCI 120455
MKCC WST 120455
CONVECTIVE SIGMET 8C
VALID UNTIL 0655Z
NE SD WY
FROM 50WNW RAP-20SSW RAP-60NW BFF-40ENE DDY-50WNW RAP
DMSHG AREA TS MOV FROM 22040KT. TOPS TO FL320.

AIRMET TANGO 5W: moderate turbulence below 18,000 ft (due to mountain wave) up to 10,000 ft. Over the route from 120 to 219 nm out.
AIRMET TANGO 5W: moderate turbulence above 18,000 ft (due to mountain wave) from 29,000 ft to 40,000 ft. Over the route from 199 to 249 nm out.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 199 to 299 nm out.
AIRMET SIERRA 3E: 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 449 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 route from 708 to 1157 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 1087 to 1785 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the route from 1267 to 1486 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 1277 to 1456 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 1337 to 1506 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 1376 to 1546 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1436 to 1875 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 1556 to 1975 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 1636 to 1835 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 180 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 CHS.

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

B738 descending, 25 nm northeast, 11:15 pm EDT (03:15 UTC): remarks: multiple layers from from 5,200 ft to 4,700 ft overcast at at 2,300 ft. 259 nm along the route, 25 nm northeast of the line.
as filed, and in English
```
TYS UA /OV KTYS/TM 0315/FLDURD/TP B738/RM MULTIPLE LAYERS FROM 052-047 OVC AT 023
```
Report
a routine report filed through TYS
Where
over KTYS
Time
03:15 UTC
Height
during the descent
Aircraft
B738
Remarks
multiple layers from from 5,200 ft to 4,700 ft overcast at at 2,300 ft
A319 descending, 25 nm northeast, 10:52 pm EDT (02:52 UTC): remarks: tops 6,800 ft bases 2,300 ft. 259 nm along the route, 25 nm northeast of the line.
as filed, and in English
```
TYS UA /OV KTYS/TM 0252/FLDURD/TP A319/RM TOPS 068 BASES 023
```
Report
a routine report filed through TYS
Where
over KTYS
Time
02:52 UTC
Height
during the descent
Aircraft
A319
Remarks
tops 6,800 ft bases 2,300 ft
B737 , 8 nm northeast, 1:31 am EDT (05:31 UTC): remarks: saw the light at 500FT braking good no icing. 1626 nm along the route, 8 nm northeast of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 0531/FLBURD/TP B737/RM SAW THE LIGHT AT 500FT. BRAKING GOOD. NEG ICING
```
Report
a routine report filed through BZN
Where
over BZN
Time
05:31 UTC
Height
at BURD
Aircraft
B737
Remarks
saw the light at 500FT braking good no icing
GLF5 descending, 8 nm northeast, 11:46 pm EDT (03:46 UTC): remarks: broke out 100-150FT above ground. 1626 nm along the route, 8 nm northeast of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 0346/FLDURD/TP GLF5/RM BROKE OUT 100-150FT AGL
```
Report
a routine report filed through BZN
Where
over BZN
Time
03:46 UTC
Height
during the descent
Aircraft
GLF5
Remarks
broke out 100-150FT above ground
CL30 at 4,200 ft, 39 nm north, 11:16 pm EDT (03:16 UTC): no icing, overcast above 4,200 ft, remarks: during the descent ils runway 12. 1756 nm along the route, 39 nm north 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
E75L at 1,500 ft, 48 nm south, 12:49 am EDT (04:49 UTC): remarks: low-level wind shear loss of 8 knots on final. 1955 nm along the route, 48 nm south of the line.
as filed, and in English
```
PSC UA /OV PSC120003/TM 0449/FL015/TP E75L/RM LLWS LOSS OF 8 KTS ON FINAL
```
Report
a routine report filed through PSC
Where
3 nm southeast (120°) of PSC
Time
04:49 UTC
Height
at 1,500 ft
Aircraft
E75L
Remarks
low-level wind shear loss of 8 knots on final

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 22 forecast points nearest it (CHS, CAE, GSP, TYS, BNA, EVV, CGI, STL, COU, MKC, DSM, OMA, GRI, ONL, PIR, RAP, BIL, DLN, LWS, 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 9 kt	+4 kt	15 °C	116 kt	18 h 04 min	4:46 pm PDT (23:46 UTC)
6,500 ft	250° at 7 kt	+4 kt	11 °C	116 kt	18 h 04 min	4:46 pm PDT (23:46 UTC)
8,500 ft	260° at 8 kt	+6 kt	7 °C	114 kt	18 h 23 min	5:05 pm PDT (00:05 UTC)
10,500 ft	260° at 10 kt	+8 kt	4 °C	112 kt	18 h 42 min	5:24 pm PDT (00:24 UTC)
12,500 ft	250° at 13 kt	+9 kt	1 °C	111 kt	18 h 52 min	5:34 pm PDT (00:34 UTC)
14,500 ft	250° at 15 kt	+11 kt	-3 °C	109 kt	19 h 13 min	5:55 pm PDT (00:55 UTC)
16,500 ft	250° at 17 kt	+12 kt	-7 °C	108 kt	19 h 24 min	6:06 pm PDT (01:06 UTC)
18,000 ft FL180	250° at 18 kt	+14 kt	-10 °C	106 kt	19 h 46 min	6:28 pm PDT (01:28 UTC)
24,000 ft FL240	250° at 20 kt	+15 kt	-22 °C	105 kt	19 h 57 min	6:39 pm PDT (01:39 UTC)
30,000 ft FL300	260° at 29 kt	+24 kt	-34 °C	96 kt	21 h 49 min	8:31 pm PDT (03:31 UTC)
34,000 ft FL340	270° at 39 kt	+34 kt	-39 °C	86 kt	24 h 22 min	11:04 pm PDT (06:04 UTC)
39,000 ft FL390	270° at 40 kt	+37 kt	-47 °C	83 kt	25 h 14 min	11:56 pm PDT (06:56 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
CHS	used from 0 nm out; 25 nm from the line	280/21	270/23 12°	280/28 11°	260/35 6°	250/41 -5°	250/45 -16°	230/59 -32°	220/74 -40°	230/67 -52°
CAE	used from 50 nm out; 18 nm from the line	330/15	330/13 12°	330/22 9°	300/26 6°	280/33 -7°	270/38 -18°	250/45 -33°	240/46 -40°	270/38 -49°
GSP	used from 100 nm out; 46 nm from the line	320/22	340/19 13°	320/18 8°	310/24 5°	300/34 -7°	300/36 -18°	290/30 -33°	300/32 -39°	320/42 -49°
TYS	used from 199 nm out; 45 nm from the line	320/20	340/18 11°	340/32 9°	340/36 4°	330/37 -7°	330/38 -19°	330/50 -34°	330/53 -38°	330/44 -48°
BNA	used from 299 nm out; 64 nm from the line	310/20	340/20 17°	330/24 10°	340/22 5°	330/26 -6°	340/29 -18°	330/52 -33°	320/62 -41°	340/45 -50°
EVV	used from 449 nm out; 41 nm from the line	280/15	290/12 17°	310/16 10°	320/13 5°	310/22 -6°	320/26 -18°	320/38 -33°	310/56 -41°	320/55 -51°
CGI	used from 499 nm out; 53 nm from the line	240/20	270/15 15°	280/15 11°	300/13 6°	290/20 -6°	280/24 -18°	300/34 -32°	300/47 -41°	310/49 -51°
STL	used from 549 nm out; 40 nm from the line	250/24	250/24 16°	260/23 9°	270/16 6°	260/25 -6°	270/29 -19°	290/34 -33°	290/48 -41°	290/54 -51°
COU	used from 648 nm out; 38 nm from the line	230/31	230/30 15°	260/16 11°	270/14 6°	260/24 -6°	270/27 -18°	270/37 -32°	280/49 -41°	290/56 -51°
MKC	used from 748 nm out; 76 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°
DSM	used from 798 nm out; 75 nm from the line	230/40	250/33 17°	250/18 12°	240/17 5°	260/28 -8°	270/34 -19°	260/41 -33°	260/55 -41°	270/62 -51°
OMA	used from 848 nm out; 39 nm from the line	220/47	240/33 19°	250/18 11°	230/17 6°	260/29 -8°	250/33 -19°	250/51 -33°	260/61 -40°	270/62 -49°
GRI	used from 948 nm out; 59 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°
ONL	used from 997 nm out; 36 nm from the line		210/31 20°	230/27 13°	230/18 7°	220/19 -8°	240/26 -20°	250/44 -35°	270/52 -39°	260/57 -47°
PIR	used from 1147 nm out; 95 nm from the line		170/22 19°	190/25 13°	210/32 6°	240/23 -9°	250/32 -21°	250/38 -36°	260/44 -40°	260/52 -47°
RAP	used from 1197 nm out; 52 nm from the line		180/23 12°	200/38 13°	210/38 6°	220/28 -10°	230/34 -21°	230/37 -36°	250/52 -38°	250/59 -46°
BIL	used from 1396 nm out; 108 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°
DLN	used from 1596 nm out; 64 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°
LWS	used from 1746 nm out; 101 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°
GEG	used from 1895 nm out; 48 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 1945 nm out; 60 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 2045 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°

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
CHS Charleston, SC	departure	VFR Sky: a few clouds at 20,000 feet	from the west-southwest (250°) at 4 knots	10+ mi	none	46 ft	12:56 am EDT (04:56 UTC)
CAE Columbia, SC	80 nm out, 17 nm northeast of the line, tower	VFR	from the west-southwest (240°) at 5 knots	10+ mi	none	235 ft	04:56 UTC
MNV Madisonville, TN	269 nm out, 2 nm east of the line	VFR Sky: overcast at 3,500 feet	calm	10+ mi	3,500 ft	1,031 ft	05:15 UTC
CPS Cahokia/St Louis, IL	598 nm out, 2 nm northeast of the line, tower	VFR	from the south-southeast (160°) at 4 knots	10+ mi	none	412 ft	04:53 UTC
TRX Trenton, MO	778 nm out, 4 nm northwest of the line	no report just now				757 ft
OMA Omaha, NE	908 nm out, 14 nm north of the line, tower	VFR Sky: scattered clouds at 25,000 feet	from the south-southeast (160°) at 9 knots	10+ mi	none	984 ft	04:52 UTC
ANW Ainsworth, NE	1107 nm out, 2 nm northeast of the line	IFR Sky: overcast at 700 feet	from the east-northeast (070°) at 3 knots	7 mi	700 ft	2,588 ft	05:15 UTC
CUT Custer, SD	1277 nm out, 4 nm northwest of the line	VFR Sky: a few clouds at 8,000 feet, overcast at 9,500 feet	from the west (270°) at 8 knots	10+ mi	9,500 ft	5,619 ft	05:38 UTC
BZN Bozeman, MT	1626 nm out, 8 nm northeast of the line, tower	low IFR Sky: a broken layer at 300 feet, overcast at 2,400 feet Weather: light snow, mist	from the south (180°) at 3 knots	2.5 mi	300 ft	4,473 ft	05:20 UTC
LWS Lewiston, ID	1865 nm out, 22 nm southwest of the line, tower	VFR Sky: overcast at 5,500 feet	calm	10+ mi	5,500 ft	1,442 ft	04:56 UTC
MWH Moses Lake, WA	1975 nm out, 8 nm northeast of the line, tower	VFR Sky: overcast at 9,000 feet	from the northwest (310°) at 4 knots	10+ mi	9,000 ft	1,188 ft	04:52 UTC
SEA Seattle, WA	destination	VFR	from the east (090°) at 6 knots	10+ mi	none	432 ft	9:53 pm PDT (04:53 UTC)

The highest airport on this list sits at 5,619 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, 4:46 pm PDT (23:46 UTC)

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

The whole forecast for SEA

From Sun 11:00 pm PDT (06:00 UTC): wind from the east-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 south at 4 knots, visibility more than 6 miles, scattered clouds at 25,000 feet

The forecast for CHS, the departure

From Mon 2:00 am EDT (06:00 UTC): wind from the west at 5 knots, visibility more than 6 miles, clear skies
From Mon 10:00 am EDT (14:00 UTC): wind from the north-northwest at 8 knots, visibility more than 6 miles, clear skies
From Mon 8:00 pm EDT (00:00 UTC): wind light and variable, visibility more than 6 miles, clear skies

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

6/0708 Goodlettsville, TN, Saturday, August 1, 2026 through Sunday, August 1, 2027 UTC 21 nm from the route, 389 nm along the route · security · until 1 August · ZME
6/7634 CENTRALIA, MO, Monday, October 12, 2026 UTC 15 nm from the route, 698 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · today · ZKC

Daylight

Sunset at CHS 6:50 pm EDT (22:50 UTC), at SEA 6:27 pm PDT (01:27 UTC) (civil twilight ends 6:58 pm PDT (01:58 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 Southeast · loop National Weather Service

Radar now, the lower Mississippi valley · 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: Charleston Afb/Intl Airport, Seattle-Tacoma International.