Plan a flight · Sun 9:03 pm EDT (01:03 UTC)

Washington Dulles International to St. Louis Lambert International IAD → STL

603 nautical miles (694 statute miles) west on a straight line, true course 273°, about 283° magnetic at the departure end (variation 10W). At 120 knots that is 5 h 17 min at the quickest height in today's winds (12,500 ft, a 6-knot headwind), arriving about 1:20 am CDT (06:20 UTC), after sunset at the destination. Right now IAD is IFR, wind from the north (350°) at 6 knots; STL 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: 1,429 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

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 first 89 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the first 119 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 30 to 198 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 138 to 307 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 IAD.

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

E170 at 22,500 ft, 13 nm north, 7:44 pm EDT (23:44 UTC): moderate clear-air turbulence from 18,000 ft to 22,500 ft, remarks: during the descent FRDMM7 star. 49 nm along the route, 13 nm north of the line.
as filed, and in English
```
OKV UA /OV ESL100020/TM 2344/FL225/TP E170/TB CONS MOD CAT 180-225/RM DURD FRDMM7 STAR
```
Report
a routine report filed through OKV
Where
20 nm east (100°) of ESL
Time
23:44 UTC
Height
at 22,500 ft
Aircraft
E170
Turbulence
continuous moderate clear-air turbulence from 18,000 ft to 22,500 ft
Remarks
during the descent FRDMM7 star
UAL2761 at 31,000 ft, 16 nm north, 7:57 pm EDT (23:57 UTC): moderate turbulence, wind 218° at 58 knots. 109 nm along the route, 16 nm north of the line.
as filed, and in English
```
ARP UAL2761 3917N 07949W 2357 F310 218/058KT TB CONT MOD TURB IC
```
Report
a routine report filed through ARP
B38M at 29,000 ft, 48 nm north, 8:55 pm EDT (00:55 UTC): moderate turbulence above 29,000 ft, remarks: zob. 129 nm along the route, 48 nm north of the line.
as filed, and in English
```
MPG UA /OV AIR120030/TM 0055/FL290/TP B38M /TB OCNL MOD 290/RM ZOB
```
Report
a routine report filed through MPG
Where
30 nm southeast (120°) of AIR
Time
00:55 UTC
Height
at 29,000 ft
Aircraft
B38M
Turbulence
occasional moderate at 29,000 ft
Remarks
zob
A320 descending, 20 nm east, 8:27 pm EDT (00:27 UTC): a routine report with nothing remarked on. At the departure end, 20 nm east of the line.
as filed, and in English
```
DCA UA /OV RWY 1 FINAL/TM 0027/FLDURD/TP A320/SK BASES 400 FT
```
Report
a routine report filed through DCA
Where
runway 1 final
Time
00:27 UTC
Height
during the descent
Aircraft
A320
Sky
bases 40,000 ft ft
A21N at 600 ft, 39 nm east, 8:23 pm EDT (00:23 UTC): a broken layer above 600 ft. At the departure end, 39 nm east of the line.
as filed, and in English
```
BWI UA /OV BWI/TM 0023/FL006/TP A21N/SK BKN006
```
Report
a routine report filed through BWI
Where
over BWI
Time
00:23 UTC
Height
at 600 ft
Aircraft
A21N
Sky
a broken layer from 600 ft
A319 descending, 20 nm east, 8:02 pm EDT (00:02 UTC): a routine report with nothing remarked on. At the departure end, 20 nm east of the line.
as filed, and in English
```
DCA UA /OV RWY 1 DEPARTURE/TM 0002/FLDURC/TP A319/SK BASES 500 FT
```
Report
a routine report filed through DCA
Where
runway 1 departure
Time
00:02 UTC
Height
during the climb
Aircraft
A319
Sky
bases 50,000 ft ft
B763 at 500 ft, 39 nm east, 7:50 pm EDT (23:50 UTC): a broken layer above 500 ft. At the departure end, 39 nm east of the line.
as filed, and in English
```
BWI UA /OV BWI/TM 2350/FL005/TP B763/SK BKN005
```
Report
a routine report filed through BWI
Where
over BWI
Time
23:50 UTC
Height
at 500 ft
Aircraft
B763
Sky
a broken layer from 500 ft
C17 at 500 ft, 29 nm east, 7:42 pm EDT (23:42 UTC): overcast above 500 ft. At the departure end, 29 nm east of the line.
as filed, and in English
```
KADW UA /OV RWY 1L ARR/TM 2342/FL005/TP C17/SK OVC005
```
Report
a routine report filed through KADW
Where
runway 1L arrival
Time
23:42 UTC
Height
at 500 ft
Aircraft
C17
Sky
overcast from 500 ft
B738 at 7,000 ft, 30 nm northeast, 7:40 pm EDT (23:40 UTC): overcast above 40,000 ft, remarks: top 6,500 ft. At the departure end, 30 nm northeast of the line.
as filed, and in English
```
BWI UA /OV BAL280010/TM 2340/FL070/TP B738/SK OVC004/RM TOP 065
```
Report
a routine report filed through BWI
Where
10 nm west (280°) of BAL
Time
23:40 UTC
Height
at 7,000 ft
Aircraft
B738
Sky
overcast from 400 ft
Remarks
top 6,500 ft
CL60 descending, 15 nm south, 7:30 pm EDT (23:30 UTC): overcast above 500 ft. At the departure end, 15 nm south of the line.
as filed, and in English
```
IAD UA /OV HEF160001/TM 2330/FLDURD/TP CL60/SK OVC 005
```
Report
a routine report filed through IAD
Where
1 nm south (160°) of HEF
Time
23:30 UTC
Height
during the descent
Aircraft
CL60
Sky
overcast from 500 ft
CL60 at 500 ft, 14 nm south, 7:30 pm EDT (23:30 UTC): overcast above 500 ft, remarks: during the descent. At the departure end, 14 nm south of the line.
as filed, and in English
```
HEF UA /OV KHEF150001/TM 2330/FL005/TP CL60/SK OVC005/RM DURD
```
Report
a routine report filed through HEF
Where
1 nm southeast (150°) of KHEF
Time
23:30 UTC
Height
at 500 ft
Aircraft
CL60
Sky
overcast from 500 ft
Remarks
during the descent
CRJ9 at 7,000 ft, 11 nm east, 7:17 pm EDT (23:17 UTC): overcast from 500 ft to 7,200 ft. At the departure end, 11 nm east of the line.
as filed, and in English
```
DCA UA /OV DCA320012/TM 2317/FL070/TP CRJ9/SK BASES 005 OVC TOPS 072
```
Report
a routine report filed through DCA
Where
12 nm northwest (320°) of DCA
Time
23:17 UTC
Height
at 7,000 ft
Aircraft
CRJ9
Sky
bases 500 ft overcast tops 7,200 ft
B39M at 2,000 ft, 5 nm northwest, 7:03 pm EDT (23:03 UTC): overcast above 700 ft. At the departure end, 5 nm northwest of the line.
as filed, and in English
```
IAD UA /OV AML320005/TM 2303/FL020/TP B39M/SK BASES OVC 007
```
Report
a routine report filed through IAD
Where
5 nm northwest (320°) of AML
Time
23:03 UTC
Height
at 2,000 ft
Aircraft
B39M
Sky
bases overcast at 700 ft
B737 at 1,000 ft, 29 nm east, 6:47 pm EDT (22:47 UTC): overcast above 500 ft. At the departure end, 29 nm east of the line.
as filed, and in English
```
KADW UA /OV 1L DEP/TM 2247/FL010/TP B737/SK OVC005
```
Report
a routine report filed through KADW
Where
1L departure
Time
22:47 UTC
Height
at 1,000 ft
Aircraft
B737
Sky
overcast from 500 ft

16 more routine reports are on the map.

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 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 7 forecast points nearest it (EKN, CRW, CMH, CVG, IND, EVV, STL). 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	310° at 14 kt	+10 kt	13 °C	110 kt	5 h 29 min	1:32 am CDT (06:32 UTC)
6,500 ft	320° at 16 kt	+11 kt	13 °C	109 kt	5 h 32 min	1:35 am CDT (06:35 UTC)
8,500 ft	330° at 16 kt	+9 kt	9 °C	111 kt	5 h 26 min	1:29 am CDT (06:29 UTC)
10,500 ft	330° at 15 kt	+7 kt	6 °C	113 kt	5 h 20 min	1:23 am CDT (06:23 UTC)
12,500 ft	330° at 15 kt	+6 kt	2 °C	114 kt	5 h 17 min	1:20 am CDT (06:20 UTC)
14,500 ft	330° at 15 kt	+7 kt	-2 °C	113 kt	5 h 20 min	1:23 am CDT (06:23 UTC)
16,500 ft	330° at 16 kt	+8 kt	-6 °C	112 kt	5 h 23 min	1:26 am CDT (06:26 UTC)
18,000 ft FL180	320° at 17 kt	+9 kt	-9 °C	111 kt	5 h 26 min	1:29 am CDT (06:29 UTC)
24,000 ft FL240	300° at 19 kt	+15 kt	-21 °C	105 kt	5 h 45 min	1:48 am CDT (06:48 UTC)
30,000 ft FL300	290° at 25 kt	+22 kt	-33 °C	98 kt	6 h 09 min	2:12 am CDT (07:12 UTC)
34,000 ft FL340	280° at 32 kt	+30 kt	-39 °C	90 kt	6 h 42 min	2:45 am CDT (07:45 UTC)
39,000 ft FL390	280° at 33 kt	+31 kt	-48 °C	89 kt	6 h 47 min	2:50 am CDT (07:50 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
EKN	used from 0 nm out; 87 nm from the line		270/18 13°	310/5 7°	140/7 3°	210/16 -9°	220/41 -20°	210/57 -32°	220/57 -38°	230/49 -47°
CRW	used from 148 nm out; 44 nm from the line	320/16	310/16 12°	320/12 7°	320/12 2°	330/15 -11°	280/11 -22°	230/26 -30°	240/33 -37°	240/37 -47°
CMH	used from 247 nm out; 61 nm from the line	340/14	320/13 12°	350/12 8°	360/10 2°	350/27 -10°	340/20 -22°	320/31 -35°	270/25 -39°	260/32 -48°
CVG	used from 297 nm out; 15 nm from the line	350/13	340/20 13°	340/22 8°	350/30 3°	340/30 -9°	340/38 -21°	330/37 -35°	320/38 -40°	310/35 -47°
IND	used from 396 nm out; 46 nm from the line	320/10	350/30 16°	350/32 10°	350/30 4°	340/31 -10°	340/42 -21°	340/49 -37°	320/46 -41°	320/47 -47°
EVV	used from 445 nm out; 52 nm from the line	310/13	340/26 16°	330/29 10°	330/32 4°	330/30 -9°	340/38 -20°	330/60 -35°	320/57 -41°	330/39 -48°
STL	used from 544 nm out; 35 nm from the line	210/13	260/16 17°	270/21 10°	280/24 5°	310/20 -7°	320/22 -18°	320/44 -33°	320/59 -43°	310/69 -51°

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
IAD Washington, DC	departure	IFR Sky: overcast at 600 feet Weather: light rain	from the north (350°) at 6 knots	8 mi	600 ft	312 ft	8:52 pm EDT (00:52 UTC)
FRR Front Royal, VA	40 nm out, 4 nm southeast of the line	low IFR Sky: overcast at 400 feet Weather: mist	from the north-northeast (020°) at 3 knots	5 mi	400 ft	703 ft	23:35 UTC
EKN Elkins, WV	109 nm out, 8 nm southwest of the line	marginal VFR Sky: overcast at 1,800 feet Weather: light rain, mist	calm	3 mi	1,800 ft	1,987 ft	00:51 UTC
CKB Clarksburg, WV	129 nm out, 16 nm north of the line, tower	marginal VFR Sky: a few clouds at 600 feet, a broken layer at 2,400 feet, overcast at 5,000 feet	from the north-northwest (340°) at 5 knots	10+ mi	2,400 ft	1,223 ft	00:53 UTC
PKB Parkersburg, WV	188 nm out, 19 nm north of the line, tower	IFR Sky: a broken layer at 600 feet, overcast at 1,900 feet Weather: light rain	from the northwest (310°) at 5 knots	7 mi	600 ft	858 ft	00:58 UTC
ILN Wilmington, OH	297 nm out, 24 nm north of the line, tower	IFR Sky: overcast at 500 feet Weather: mist	from the northwest (320°) at 7 knots	4 mi	500 ft	1,076 ft	00:54 UTC
CVG Covington, KY	336 nm out, 2 nm north of the line, tower	marginal VFR Sky: overcast at 1,700 feet	from the north-northwest (340°) at 7 knots	10+ mi	1,700 ft	896 ft	00:52 UTC
BAK Columbus, IN	396 nm out, 17 nm north of the line, tower	VFR	calm	10+ mi	none	656 ft	00:45 UTC
BMG Bloomington, IN	425 nm out, 12 nm north of the line, tower	VFR	calm	10+ mi	none	845 ft	00:53 UTC
OLY Olney-Noble, IL	504 nm out, 10 nm southeast of the line	VFR	calm	10+ mi	none	482 ft	00:50 UTC
ALN Alton/St Louis, IL	584 nm out, 8 nm northwest of the line, tower	VFR	from the southeast (140°) at 6 knots	10+ mi	none	543 ft	00:50 UTC
STL St Louis, MO	destination	VFR Sky: a few clouds at 25,000 feet	from the southeast (130°) at 7 knots	10+ mi	none	617 ft	7:51 pm CDT (00:51 UTC)

The highest airport on this list sits at 1,987 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At STL when you get there the forecast at the estimated arrival, 1:20 am CDT (06:20 UTC)

Wind from the south-southwest at 6 knots, visibility more than 6 miles, a few clouds at 25,000 feet VFR

The whole forecast for STL

From Sun 7:00 pm CDT (00:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, clear skies
From Mon 1:00 am CDT (06:00 UTC): wind from the south-southwest at 6 knots, visibility more than 6 miles, a few clouds at 25,000 feet
From Mon 11:00 am CDT (16:00 UTC): wind from the southwest at 12 knots, gusting to 20, visibility more than 6 miles, a few clouds at 25,000 feet

The forecast for IAD, the departure

From Sun 8:00 pm EDT (00:00 UTC): wind from the north at 7 knots, visibility 4 miles, light rain showers, mist, overcast at 700 feet
From Sun 10:00 pm EDT (02:00 UTC): wind from the north-northwest at 6 knots, visibility 2 miles, rain showers, mist, overcast at 400 feet
From Mon 4:00 am EDT (08:00 UTC): wind from the north-northwest at 10 knots, gusting to 18, visibility 4 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

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

4/9383 WASHINGTON, DC., USA 8 nm from the route, at the departure end · security · ZDC
6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 4 nm from the route, at the departure end · a VIP movement · today · ZDC
6/8029 Cincinnati, OH, Friday, October 9, 2026 through Monday, October 12, 2026 Local on the route, 336 nm along the route · a VIP movement · until 12 October · ZID

Daylight

Sunset at IAD 6:36 pm EDT (22:36 UTC), at STL 6:27 pm CDT (23:27 UTC) (civil twilight ends 6:54 pm CDT (23:54 UTC)). At 120 knots the arrival at STL is before sunrise there (7:07 am CDT (12:07 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 Northeast · loop National Weather Service

Radar now, the Southeast · loop National Weather Service

Radar now, the central Great Lakes · 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: Washington Dulles International, St. Louis Lambert International.