Plan a flight · Sun 9:35 pm EDT (01:35 UTC)

James M Cox Dayton International to Washington Dulles International DAY → IAD

319 nautical miles (367 statute miles) east on a straight line, true course 098°, about 104° magnetic at the departure end (variation 6W). At 120 knots that is 2 h 07 min at the quickest height in today's winds (39,000 ft, a 31-knot tailwind), arriving about 11:42 pm EDT (03:42 UTC), after sunset at the destination. Right now DAY is marginal VFR, wind from the north-northwest (330°) at 6 knots; IAD is IFR, wind from the north (350°) 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: 1,888 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 3E: thunderstorms (a convective SIGMET) up to 31,000 ft, moving from the west at 15 knots, until 10:55 pm EDT (02:55 UTC). Over the last 229 nm of the route.

as issued

WSUS31 KKCI 120055
MKCE WST 120055
CONVECTIVE SIGMET 3E
VALID UNTIL 0255Z
PA MD VA NC WV OH KY
FROM 20NE APE-30SE JST-30SSE DCA-40SW ECG-70NNW HMV-20NE APE
AREA TS MOV FROM 28015KT. TOPS TO FL310.

AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist), from 8:00 pm EDT (00:00 UTC). Over the first 159 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist), from 8:00 pm EDT (00:00 UTC). Over the route from 139 to 289 nm out.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft, from 8:00 pm EDT (00:00 UTC). Over the last 139 nm of the route.
AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist), from 8:00 pm EDT (00:00 UTC). Over the last 100 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 DAY.

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

B38M at 29,000 ft, 26 nm north, 8:55 pm EDT (00:55 UTC): moderate turbulence above 29,000 ft, remarks: zob. 179 nm along the route, 26 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
UAL2761 at 31,000 ft, 3 nm southwest, 7:57 pm EDT (23:57 UTC): moderate turbulence, wind 218° at 58 knots. 209 nm along the route, 3 nm southwest 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
A321 at 30,000 ft, 42 nm north, 7:49 pm EDT (23:49 UTC): moderate turbulence above 30,000 ft, remarks: zob. 219 nm along the route, 42 nm north of the line.
as filed, and in English
```
2G9 UA /OV IHD/TM 2349/FL300/TP A321/TB MOD 300/RM ZOB
```
Report
a routine report filed through 2G9
Where
over IHD
Time
23:49 UTC
Height
at 30,000 ft
Aircraft
A321
Turbulence
moderate at 30,000 ft
Remarks
zob
E170 at 22,500 ft, 5 nm northwest, 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. 269 nm along the route, 5 nm northwest 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
CRJ9 descending, 0 nm north, 9:15 pm EDT (01:15 UTC): a routine report with nothing remarked on. At the departure end, 0 nm north of the line.
as filed, and in English
```
DAY UA /OV DAY/TM 0115/FLDURD/TP CRJ9/SK T031 B005
```
Report
a routine report filed through DAY
Where
over DAY
Time
01:15 UTC
Height
during the descent
Aircraft
CRJ9
Sky
T031 B005
A321 at 21,000 ft, 25 nm north, 8:23 pm EDT (00:23 UTC): no turbulence. At the departure end, 25 nm north of the line.
as filed, and in English
```
IND UA /OV ROD/TM 0023/FL210/TP A321/TB NEG
```
Report
a routine report filed through IND
Where
over ROD
Time
00:23 UTC
Height
at 21,000 ft
Aircraft
A321
Turbulence
none
B744 climbing, 49 nm southwest, 8:02 pm EDT (00:02 UTC): light turbulence, overcast. At the departure end, 49 nm southwest of the line.
as filed, and in English
```
CVG UA /OV 10 N CVG/TM 0002/FLDURC/TP B744/SK B022 OVC T036/TB LT TB SFC-036
```
Report
a routine report filed through CVG
Where
10 north cvg
Time
00:02 UTC
Height
during the climb
Aircraft
B744
Sky
B022 overcast T036
Turbulence
lt turbulence from the surface to 3,600 ft
E145 climbing, 0 nm north, 7:51 pm EDT (23:51 UTC): a routine report with nothing remarked on. At the departure end, 0 nm north of the line.
as filed, and in English
```
CMH UA /OV DAY/TM 2351/FLDURC/TP E145/SK B005 T035
```
Report
a routine report filed through CMH
Where
over DAY
Time
23:51 UTC
Height
during the climb
Aircraft
E145
Sky
B005 T035
E545 at 28,000 ft, 25 nm north, 7:15 pm EDT (23:15 UTC): no turbulence. At the departure end, 25 nm north of the line.
as filed, and in English
```
IND UA /OV ROD/TM 2315/FL280/TP E545/TB NEG
```
Report
a routine report filed through IND
Where
over ROD
Time
23:15 UTC
Height
at 28,000 ft
Aircraft
E545
Turbulence
none
BCS3 at 3,000 ft, 15 nm north, 8:27 pm EDT (00:27 UTC): a routine report with nothing remarked on. 60 nm along the route, 15 nm north of the line.
as filed, and in English
```
CMH UA /OV CMH/TM 0027/FL030/TP BCS3/SK T037
```
Report
a routine report filed through CMH
Where
over CMH
Time
00:27 UTC
Height
at 3,000 ft
Aircraft
BCS3
Sky
T037
C150 climbing, 4 nm northeast, 6:45 pm EDT (22:45 UTC): a routine report with nothing remarked on. 70 nm along the route, 4 nm northeast of the line.
as filed, and in English
```
CMH UA /OV LHQ/TM 2245/FLDURC/TP C150/SK B015 T038
```
Report
a routine report filed through CMH
Where
over LHQ
Time
22:45 UTC
Height
during the climb
Aircraft
C150
Sky
B015 T038
BCS3 at 25,000 ft, 8 nm southeast, 8:58 pm EDT (00:58 UTC): light turbulence, no icing, remarks: during the climb. 129 nm along the route, 8 nm southeast of the line.
as filed, and in English
```
PKB UA /OV JPU/TM 0058/FL250/TP BCS3/TB LGT/IC NEG/RM DURC
```
Report
a routine report filed through PKB
Where
over JPU
Time
00:58 UTC
Height
at 25,000 ft
Aircraft
BCS3
Turbulence
light
Icing
none
Remarks
during the climb
FA8X climbing, 5 nm east, 8:34 pm EDT (00:34 UTC): overcast above 1,000 ft. At the destination end, 5 nm east 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
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

11 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 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 3 forecast points nearest it (CMH, EKN, 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	320° at 9 kt	−6 kt		126 kt	2 h 32 min	12:07 am EDT (04:07 UTC)
5,500 ft	280° at 13 kt	−13 kt	13 °C	133 kt	2 h 24 min	11:59 pm EDT (03:59 UTC)
7,500 ft	300° at 9 kt	−9 kt	10 °C	129 kt	2 h 28 min	12:03 am EDT (04:03 UTC)
9,500 ft	330° at 5 kt	−4 kt	7 °C	124 kt	2 h 34 min	12:09 am EDT (04:09 UTC)
11,500 ft	010° at 1 kt	0	4 °C	120 kt	2 h 40 min	12:15 am EDT (04:15 UTC)
13,500 ft	310° at 2 kt	−1 kt	0 °C	121 kt	2 h 38 min	12:13 am EDT (04:13 UTC)
15,500 ft	300° at 5 kt	−4 kt	-4 °C	124 kt	2 h 34 min	12:09 am EDT (04:09 UTC)
17,500 ft	300° at 8 kt	−7 kt	-8 °C	127 kt	2 h 31 min	12:06 am EDT (04:06 UTC)
18,000 ft FL180	300° at 9 kt	−8 kt	-9 °C	128 kt	2 h 30 min	12:05 am EDT (04:05 UTC)
24,000 ft FL240	250° at 21 kt	−16 kt	-21 °C	136 kt	2 h 21 min	11:56 pm EDT (03:56 UTC)
30,000 ft FL300	240° at 31 kt	−22 kt	-33 °C	142 kt	2 h 15 min	11:50 pm EDT (03:50 UTC)
34,000 ft FL340	230° at 41 kt	−27 kt	-39 °C	147 kt	2 h 10 min	11:45 pm EDT (03:45 UTC)
39,000 ft FL390	240° at 41 kt	−31 kt	-48 °C	151 kt	2 h 07 min	11:42 pm EDT (03:42 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
CMH	used from 0 nm out; 38 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°
EKN	used from 149 nm out; 44 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°
RIC	used from 299 nm out; 90 nm from the line	190/33	200/29 14°	210/31 12°	210/38 6°	230/42 -7°	230/68 -16°	220/84 -29°	220/86 -40°	220/81 -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
DAY Dayton, OH	departure	marginal VFR Sky: a broken layer at 1,000 feet, overcast at 1,400 feet	from the north-northwest (330°) at 6 knots	7 mi	1,000 ft	1,009 ft	9:18 pm EDT (01:18 UTC)
SGH Springfield, OH	20 nm out, 2 nm west of the line	low IFR Sky: overcast at 400 feet Weather: mist	from the northwest (310°) at 6 knots	4 mi	400 ft	1,051 ft	00:56 UTC
LCK Columbus, OH	60 nm out, 4 nm north of the line, tower	marginal VFR Sky: overcast at 1,400 feet	from the northwest (310°) at 6 knots	10+ mi	1,400 ft	743 ft	00:55 UTC
PKB Parkersburg, WV	129 nm out, 13 nm south of the line, tower	IFR Sky: a broken layer at 600 feet, overcast at 2,300 feet Weather: heavy rain, mist	from the north-northwest (330°) at 6 knots	1.75 mi	600 ft	858 ft	01:24 UTC
MPG Moundsville, WV	159 nm out, 25 nm north of the line	no report just now				1,214 ft
CKB Clarksburg, WV	189 nm out, 5 nm south of the line, tower	marginal VFR Sky: scattered clouds at 600 feet, overcast at 2,000 feet	from the east-northeast (060°) at 3 knots	10+ mi	2,000 ft	1,223 ft	01:18 UTC
MRB Martinsburg, WV	289 nm out, 21 nm north of the line, tower	IFR Sky: overcast at 800 feet	from the north (360°) at 8 knots	10+ mi	800 ft	564 ft	00:53 UTC
IAD Washington, DC	destination	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)

The highest airport on this list sits at 1,223 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, 11:42 pm EDT (03:42 UTC)

Wind from the north-northwest at 6 knots, visibility 2 miles, rain showers, mist, overcast at 400 feet low IFR

The whole forecast for IAD

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

The forecast for DAY, the departure

From Sun 8:00 pm EDT (00:00 UTC): wind from the northwest at 6 knots, visibility more than 6 miles, overcast at 800 feet
From Mon 12:00 am EDT (04:00 UTC): wind from the west-northwest at 4 knots, visibility 5 miles, mist, scattered clouds at 600 feet
From Mon 5:00 am EDT (09:00 UTC): wind from the west at 3 knots, visibility 2 miles, mist, scattered clouds at 200 feet
At times between Mon 6:00 am EDT (10:00 UTC) and 9:00 am EDT (13:00 UTC): visibility ¼ mile, fog, sky obscured at 200 feet
From Mon 10:00 am EDT (14:00 UTC): wind from the south-southwest at 8 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
From Mon 1:00 pm EDT (17:00 UTC): wind from the south-southwest at 10 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 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 DAY 7:02 pm EDT (23:02 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 central Great Lakes · 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: James M Cox Dayton International, Washington Dulles International.