Plan a flight · Sun 11:33 pm EDT (03:33 UTC)

Greenville Spartanburg International to Washington Dulles International GSP → IAD

334 nautical miles (384 statute miles) northeast on a straight line, true course 042°, about 048° magnetic at the departure end (variation 6W). At 120 knots that is 2 h 12 min at the quickest height in today's winds (34,000 ft, a 32-knot tailwind), arriving about 1:45 am EDT (05:45 UTC), after sunset at the destination. Right now GSP is VFR, wind from the west-southwest (240°) at 5 knots; IAD is IFR, wind from the north-northwest (340°) at 10 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: 1,706 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 E11E: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 20 knots, until 12:55 am EDT (04:55 UTC). Over the last 49 nm of the route.

as issued

WSUS31 KKCI 120255
MKCE WST 120255
CONVECTIVE SIGMET 11E
VALID UNTIL 0455Z
NY NJ PA DE MD VA DC WV AND DE NJ NY MD CT VA CSTL WTRS
FROM 20NE JFK-90SE SIE-20NNW ORF-30ENE EKN-10S JST-20NE JFK
AREA EMBD TS MOV FROM 24020KT. TOPS TO FL340.

AIRMET TANGO 5W: moderate turbulence below 18,000 ft (due to mountain wave) up to 10,000 ft. Over the route from 20 to 186 nm out.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 147 to 226 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 last 137 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 78 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 GSP.

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

B38M at 20,000 ft, 18 nm northwest, 11:11 pm EDT (03:11 UTC): moderate clear-air turbulence from 20,000 ft to 25,000 ft. At the destination end, 18 nm northwest of the line.
as filed, and in English
```
IAD UA /OV AML300020/TM 0311/FL200/TP B38M/TB MOD CAT 200-250
```
Report
a routine report filed through IAD
Where
20 nm northwest (300°) of AML
Time
03:11 UTC
Height
at 20,000 ft
Aircraft
B38M
Turbulence
moderate clear-air turbulence from 20,000 ft to 25,000 ft
C52C at 12,500 ft, 29 nm northwest, 8:34 pm EDT (00:34 UTC): no icing, overcast up to 12,500 ft, 1 °C. 147 nm along the route, 29 nm northwest of the line.
as filed, and in English
```
ROA UA /OV ROA240030/TM 0034/FL125/TP C52C/SK OVCUNKN-TOP125/TA +1/IC NEG
```
Report
a routine report filed through ROA
Where
30 nm southwest (240°) of ROA
Time
00:34 UTC
Height
at 12,500 ft
Aircraft
C52C
Sky
overcast, tops 12,500 ft
Temperature
+1
Icing
none
E145 at 4,000 ft, 22 nm northwest, 8:36 pm EDT (00:36 UTC): overcast above 4,000 ft, remarks: during the climb runway 06 KROA. 177 nm along the route, 22 nm northwest of the line.
as filed, and in English
```
ROA UA /OV ROA/TM 0036/FL040/TP E145/SK OVC040/RM DURGC RY06 KROA
```
Report
a routine report filed through ROA
Where
over ROA
Time
00:36 UTC
Height
at 4,000 ft
Aircraft
E145
Sky
overcast from 4,000 ft
Remarks
during the climb runway 06 KROA
B712 descending, 39 nm east, 11:10 pm EDT (03:10 UTC): remarks: light rain light chop bases 50,000 ft ft. At the destination end, 39 nm east of the line.
as filed, and in English
```
BWI UA /OV RWY 15R/TM 0310/FLDURD/TP B712/RM LIGHT RAIN. LIGHT CHOP. BASES 500 FT
```
Report
a routine report filed through BWI
Where
runway 15R
Time
03:10 UTC
Height
during the descent
Aircraft
B712
Remarks
light rain light chop bases 50,000 ft ft
A320 at 2,000 ft, 39 nm east, 9:46 pm EDT (01:46 UTC): a broken layer from 30,000 ft to 4,500 ft, remarks: CONLE5 sid. At the destination end, 39 nm east of the line.
as filed, and in English
```
BWI UA /OV BAL180005/TM 0146/FL020/TP A320/SK BKN003-TOP045/RM CONLE5 SID
```
Report
a routine report filed through BWI
Where
5 nm south (180°) of BAL
Time
01:46 UTC
Height
at 2,000 ft
Aircraft
A320
Sky
a broken layer from 300 ft, tops 4,500 ft
Remarks
CONLE5 sid
B738 at 2,000 ft, 37 nm east, 9:43 pm EDT (01:43 UTC): a broken layer from 40,000 ft to 7,200 ft, remarks: TERPZ8 sid. At the destination end, 37 nm east of the line.
as filed, and in English
```
BWI UA /OV BAL260003/TM 0143/FL20/TP B738/SK BKN004-TOP072/RM TERPZ8 SID
```
Report
a routine report filed through BWI
Where
3 nm west (260°) of BAL
Time
01:43 UTC
Height
at 2,000 ft
Aircraft
B738
Sky
a broken layer from 400 ft, tops 7,200 ft
Remarks
TERPZ8 sid
B38M at 400 ft, 20 nm east, 9:15 pm EDT (01:15 UTC): overcast above 40,000 ft. At the destination end, 20 nm east of the line.
as filed, and in English
```
DCA UA /OV DCA/TM 0115/FL004/TP B38M/SK OVC004
```
Report
a routine report filed through DCA
Where
over DCA
Time
01:15 UTC
Height
at 400 ft
Aircraft
B38M
Sky
overcast from 400 ft
FA8X climbing, 5 nm west, 8:34 pm EDT (00:34 UTC): overcast above 1,000 ft. At the destination end, 5 nm west of the line.
as filed, and in English
```
IAD UA /OV AML300005/TM 0034/FLDURC/TP FA8X/SK OVC010
```
Report
a routine report filed through IAD
Where
5 nm northwest (300°) of AML
Time
00:34 UTC
Height
during the climb
Aircraft
FA8X
Sky
overcast from 1,000 ft

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 4 forecast points nearest it (GSP, TRI, ROA, RIC). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
3,500 ft	300° at 24 kt	−4 kt		124 kt	2 h 42 min	2:15 am EDT (06:15 UTC)
5,500 ft	320° at 23 kt	+2 kt	11 °C	118 kt	2 h 50 min	2:23 am EDT (06:23 UTC)
7,500 ft	320° at 22 kt	+4 kt	10 °C	116 kt	2 h 53 min	2:26 am EDT (06:26 UTC)
9,500 ft	320° at 21 kt	+3 kt	7 °C	117 kt	2 h 51 min	2:24 am EDT (06:24 UTC)
11,500 ft	310° at 20 kt	0	5 °C	120 kt	2 h 47 min	2:20 am EDT (06:20 UTC)
13,500 ft	300° at 22 kt	−3 kt	1 °C	123 kt	2 h 43 min	2:16 am EDT (06:16 UTC)
15,500 ft	300° at 24 kt	−7 kt	-3 °C	127 kt	2 h 38 min	2:11 am EDT (06:11 UTC)
17,500 ft	290° at 27 kt	−10 kt	-7 °C	130 kt	2 h 34 min	2:07 am EDT (06:07 UTC)
18,000 ft FL180	290° at 27 kt	−10 kt	-8 °C	130 kt	2 h 34 min	2:07 am EDT (06:07 UTC)
24,000 ft FL240	270° at 29 kt	−18 kt	-20 °C	138 kt	2 h 25 min	1:58 am EDT (05:58 UTC)
30,000 ft FL300	260° at 34 kt	−26 kt	-31 °C	146 kt	2 h 17 min	1:50 am EDT (05:50 UTC)
34,000 ft FL340	260° at 41 kt	−32 kt	-39 °C	152 kt	2 h 12 min	1:45 am EDT (05:45 UTC)
39,000 ft FL390	270° at 35 kt	−25 kt	-48 °C	145 kt	2 h 18 min	1:51 am EDT (05:51 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
GSP	used from 0 nm out; 25 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°
TRI	used from 49 nm out; 71 nm from the line		330/22 11°	330/29 7°	330/32 3°	330/36 -8°	320/34 -19°	320/36 -34°	320/43 -39°	320/46 -47°
ROA	used from 98 nm out; 61 nm from the line	310/29	330/31 13°	340/28 7°	330/25 3°	310/32 -8°	300/32 -22°	290/32 -31°	270/35 -38°	270/32 -47°
RIC	used from 245 nm out; 66 nm from the line	270/23	280/19 11°	270/18 8°	240/22 4°	230/39 -7°	220/55 -18°	220/75 -30°	230/83 -39°	230/64 -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
GSP Greer, SC	departure	VFR	from the west-southwest (240°) at 5 knots	10+ mi	none	963 ft	10:53 pm EDT (02:53 UTC)
EHO Shelby, NC	39 nm out, 9 nm southeast of the line	VFR	from the south-southeast (160°) at 3 knots	10+ mi	none	846 ft	03:15 UTC
HKY Hickory, NC	69 nm out, 5 nm west of the line, tower	VFR	from the south (190°) at 4 knots	10+ mi	none	1,189 ft	02:53 UTC
INT Winston Salem, NC	118 nm out, 22 nm southeast of the line, tower	VFR Sky: a broken layer at 4,300 feet, overcast at 7,000 feet	from the southwest (230°) at 5 knots	10+ mi	4,300 ft	969 ft	02:54 UTC
MWK Mount Airy, NC	128 nm out, 5 nm west of the line	VFR Sky: overcast at 3,400 feet	variable at 1 knots	10+ mi	3,400 ft	1,268 ft	03:15 UTC
LYH Lynchburg, VA	206 nm out, 9 nm southeast of the line, tower	low IFR Sky: overcast at 200 feet Weather: mist	from the west-southwest (250°) at 3 knots	3 mi	200 ft	938 ft	03:24 UTC
CHO Charlottesville, VA	265 nm out, 2 nm northeast of the line, tower	IFR Sky: a few clouds at 200 feet, a broken layer at 1,100 feet, overcast at 1,900 feet Weather: rain, mist	calm	2.5 mi	1,100 ft	640 ft	03:24 UTC
CJR Culpeper, VA	304 nm out, 5 nm southeast of the line	IFR Sky: a broken layer at 500 feet, overcast at 1,200 feet Weather: heavy rain	from the north-northwest (330°) at 6 knots	4 mi	500 ft	315 ft	03:15 UTC
IAD Washington, DC	destination	IFR Sky: overcast at 600 feet Weather: light rain	from the north-northwest (340°) at 10 knots	10+ mi	600 ft	312 ft	10:52 pm EDT (02:52 UTC)

The highest airport on this list sits at 1,268 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At IAD when you get there the forecast at the estimated arrival, 1:45 am EDT (05:45 UTC)

Wind from the north-northwest at 10 knots, visibility 3 miles, light rain showers, mist, overcast at 600 feet IFR

The whole forecast for IAD

From Sun 11:00 pm EDT (03:00 UTC): wind from the north-northwest at 10 knots, visibility 3 miles, light rain showers, mist, overcast at 600 feet
From Mon 6:00 am EDT (10:00 UTC): wind from the north-northwest at 11 knots, gusting to 19, visibility more than 6 miles, overcast at 1,400 feet
From Mon 12:00 pm EDT (16:00 UTC): wind from the north-northwest at 13 knots, gusting to 21, visibility more than 6 miles, overcast at 2,100 feet
From Mon 2:00 pm EDT (18:00 UTC): wind from the north-northwest at 10 knots, gusting to 17, visibility more than 6 miles, a broken layer at 4,000 feet
From Mon 7:00 pm EDT (23:00 UTC): wind from the northwest at 6 knots, visibility more than 6 miles, scattered clouds at 25,000 feet

The forecast for GSP, the departure

From Sun 8:00 pm EDT (00:00 UTC): wind from the west-southwest at 9 knots, visibility more than 6 miles, scattered clouds at 7,000 feet
From Mon 2:00 am EDT (06:00 UTC): wind from the west-southwest at 5 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
From Mon 12:00 pm EDT (16:00 UTC): wind from the north-northwest at 9 knots, visibility more than 6 miles, a few clouds at 25,000 feet

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

4/9383 WASHINGTON, DC., USA 8 nm from the route, at the destination end · security · ZDC
6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 4 nm from the route, at the destination end · a VIP movement · today · ZDC

Daylight

Sunset at GSP 6:58 pm EDT (22:58 UTC), at IAD 6:36 pm EDT (22:36 UTC) (civil twilight ends 7:02 pm EDT (23:02 UTC)). At 120 knots the arrival at IAD is before sunrise there (7:16 am EDT (11:16 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 Northeast · 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: Greenville Spartanburg International, Washington Dulles International.