Plan a flight · Sun 11:34 pm EDT (03:34 UTC)

Washington Dulles International to Patrick Leahy Burlington International IAD → BTV

384 nautical miles (441 statute miles) northeast on a straight line, true course 029°, about 039° magnetic at the departure end (variation 10W). At 120 knots that is 2 h 15 min at the quickest height in today's winds (34,000 ft, a 51-knot tailwind), arriving about 1:49 am EDT (05:49 UTC), after sunset at the destination. Right now IAD is IFR, wind from the north-northwest (340°) at 10 knots; BTV is VFR, wind from the south (170°) at 4 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: 2,391 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 first 98 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 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 285 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the whole route.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 13,000 ft. Over the route from 89 to 305 nm out.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 128 to 374 nm out.
AIRMET ZULU 1C: moderate icing up to 25,000 ft. Over the last 157 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 IAD.

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

B38M at 20,000 ft, 20 nm west, 11:11 pm EDT (03:11 UTC): moderate clear-air turbulence from 20,000 ft to 25,000 ft. At the departure end, 20 nm west 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
UAL1558 at 30,000 ft, 47 nm northwest, 10:22 pm EDT (02:22 UTC): moderate turbulence, -36 °C, wind 240° at 50 knots. 59 nm along the route, 47 nm northwest of the line.
as filed, and in English
```
ARP UAL1558 4014N 07742W 0222 F300 MS36 240/050KT TB MODERATE SK CLEAR IC NONE
```
Report
a routine report filed through ARP
E145 at 12,000 ft, 13 nm southeast, 8:43 pm EDT (00:43 UTC): moderate turbulence. 89 nm along the route, 13 nm southeast of the line.
as filed, and in English
```
LNS UA /OV LRP/TM 0043/FL120/TP E145/TB CONS MOD
```
Report
a routine report filed through LNS
Where
over LRP
Time
00:43 UTC
Height
at 12,000 ft
Aircraft
E145
Turbulence
continuous moderate
A21N at 18,000 ft, 39 nm southeast, 8:38 pm EDT (00:38 UTC): moderate clear-air turbulence. 108 nm along the route, 39 nm southeast of the line.
as filed, and in English
```
PTW UA /OV PTW/TM 0038/FL180/TP A21N/TB MOD CAT
```
Report
a routine report filed through PTW
Where
over PTW
Time
00:38 UTC
Height
at 18,000 ft
Aircraft
A21N
Turbulence
moderate clear-air turbulence
CRJ7 at 20,000 ft, 25 nm southeast, 8:50 pm EDT (00:50 UTC): moderate turbulence. 315 nm along the route, 25 nm southeast of the line.
as filed, and in English
```
ALB UA /OV CAM360020/TM 0050/FL200/TP CRJ7/TB MOD
```
Report
a routine report filed through ALB
Where
20 nm north (360°) of CAM
Time
00:50 UTC
Height
at 20,000 ft
Aircraft
CRJ7
Turbulence
moderate
B38M at 400 ft, 20 nm southeast, 9:15 pm EDT (01:15 UTC): overcast above 40,000 ft. At the departure end, 20 nm southeast 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
B712 descending, 26 nm southeast, 11:10 pm EDT (03:10 UTC): remarks: light rain light chop bases 50,000 ft ft. 30 nm along the route, 26 nm southeast 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, 29 nm southeast, 9:46 pm EDT (01:46 UTC): a broken layer from 30,000 ft to 4,500 ft, remarks: CONLE5 sid. 30 nm along the route, 29 nm southeast 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, 24 nm southeast, 9:43 pm EDT (01:43 UTC): a broken layer from 40,000 ft to 7,200 ft, remarks: TERPZ8 sid. 30 nm along the route, 24 nm southeast 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
C25B at 800 ft, 12 nm northwest, 9:41 pm EDT (01:41 UTC): remarks: bases 800 ft. 79 nm along the route, 12 nm northwest of the line.
as filed, and in English
```
MDT UA /OV CXY/TM 0141/FL008/TP C25B/RM BASES 008
```
Report
a routine report filed through MDT
Where
over CXY
Time
01:41 UTC
Height
at 800 ft
Aircraft
C25B
Remarks
bases 800 ft
PC12 at 1,000 ft, 18 nm southeast, 10:28 pm EDT (02:28 UTC): overcast above 1,000 ft. 108 nm along the route, 18 nm southeast of the line.
as filed, and in English
```
RDG UA /OV 2 SOUTH RDG/TM 0228/FL010/TP PC12/SK OVC010
```
Report
a routine report filed through RDG
Where
2 south rdg
Time
02:28 UTC
Height
at 1,000 ft
Aircraft
PC12
Sky
overcast from 1,000 ft
CRJ7 at 3,100 ft, 3 nm southwest, 9:24 pm EDT (01:24 UTC): a routine report with nothing remarked on. 167 nm along the route, 3 nm southwest of the line.
as filed, and in English
```
AVP UA /OV AVP/TM 0124/FL031/TP CRJ7/SK TOP031
```
Report
a routine report filed through AVP
Where
over AVP
Time
01:24 UTC
Height
at 3,100 ft
Aircraft
CRJ7
Sky
TOP031
BCS3 at 2,500 ft, 3 nm southwest, 9:04 pm EDT (01:04 UTC): overcast above 2,500 ft. 167 nm along the route, 3 nm southwest of the line.
as filed, and in English
```
AVP UA /OV AVP/TM 0104/FL025/TP BCS3/SK OVC025
```
Report
a routine report filed through AVP
Where
over AVP
Time
01:04 UTC
Height
at 2,500 ft
Aircraft
BCS3
Sky
overcast from 2,500 ft
E145 at 24,000 ft, 48 nm southeast, 8:59 pm EDT (00:59 UTC): a routine report with nothing remarked on. 256 nm along the route, 48 nm southeast of the line.
as filed, and in English
```
ALB UA /OV 1B1/TM 0059/FL240/TP E145/TB CONS MMOD CHOP
```
Report
a routine report filed through ALB
Where
over 1B1
Time
00:59 UTC
Height
at 24,000 ft
Aircraft
E145
Turbulence
continuous mmod chop

1 more routine reports are on the map.

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 3 forecast points nearest it (PSB, AVP, ALB). 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	130° at 4 kt	0		120 kt	3 h 12 min	2:46 am EDT (06:46 UTC)
5,500 ft	340° at 7 kt	+5 kt	13 °C	115 kt	3 h 20 min	2:54 am EDT (06:54 UTC)
7,500 ft	310° at 9 kt	+2 kt	9 °C	118 kt	3 h 15 min	2:49 am EDT (06:49 UTC)
9,500 ft	280° at 10 kt	−3 kt	6 °C	123 kt	3 h 07 min	2:41 am EDT (06:41 UTC)
11,500 ft	270° at 12 kt	−6 kt	4 °C	126 kt	3 h 03 min	2:37 am EDT (06:37 UTC)
13,500 ft	270° at 15 kt	−8 kt	-1 °C	128 kt	3 h	2:34 am EDT (06:34 UTC)
15,500 ft	260° at 19 kt	−11 kt	-5 °C	131 kt	2 h 56 min	2:30 am EDT (06:30 UTC)
17,500 ft	260° at 23 kt	−14 kt	-10 °C	134 kt	2 h 52 min	2:26 am EDT (06:26 UTC)
18,000 ft FL180	260° at 25 kt	−15 kt	-11 °C	135 kt	2 h 51 min	2:25 am EDT (06:25 UTC)
24,000 ft FL240	240° at 33 kt	−27 kt	-22 °C	147 kt	2 h 37 min	2:11 am EDT (06:11 UTC)
30,000 ft FL300	240° at 47 kt	−39 kt	-35 °C	159 kt	2 h 25 min	1:59 am EDT (05:59 UTC)
34,000 ft FL340	240° at 57 kt	−51 kt	-41 °C	171 kt	2 h 15 min	1:49 am EDT (05:49 UTC)
39,000 ft FL390	240° at 56 kt	−47 kt	-49 °C	167 kt	2 h 18 min	1:52 am EDT (05:52 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
PSB	used from 0 nm out; 103 nm from the line		360/13 13°	330/14 7°	300/11 3°	290/12 -11°	240/23 -23°	270/25 -36°	250/34 -40°	250/45 -48°
AVP	used from 98 nm out; 41 nm from the line	150/5	350/13 12°	270/20 8°	260/17 4°	260/25 -11°	240/31 -22°	240/54 -35°	230/61 -41°	240/55 -49°
ALB	used from 246 nm out; 31 nm from the line	120/9	270/8 10°	L/V 5°	260/9 1°	260/34 -10°	250/42 -22°	240/57 -35°	240/70 -42°	240/65 -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
IAD Washington, DC	departure	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)
FDK Frederick, MD	30 nm out, 11 nm west of the line, tower	IFR Sky: overcast at 600 feet Weather: light rain, mist	from the north (350°) at 7 knots	4 mi	600 ft	308 ft	03:15 UTC
MDT Harrisburg, PA	79 nm out, 8 nm northwest of the line, tower	IFR Sky: overcast at 800 feet	from the northwest (320°) at 4 knots	9 mi	800 ft	310 ft	03:25 UTC
LNS Lancaster, PA	89 nm out, 13 nm southeast of the line, tower	IFR Sky: overcast at 700 feet	from the northeast (040°) at 9 knots	9 mi	700 ft	402 ft	02:53 UTC
AVP Wilkes-Barre/Scranton, PA	167 nm out, 3 nm southwest of the line, tower	marginal VFR Sky: overcast at 1,300 feet	from the east-northeast (060°) at 6 knots	10+ mi	1,300 ft	961 ft	02:54 UTC
MSV Monticello, NY	207 nm out, 24 nm southeast of the line	low IFR Sky: overcast at 400 feet Weather: light rain	from the east (080°) at 5 knots	7 mi	400 ft	1,403 ft	02:56 UTC
SCH Schenectady, NY	285 nm out, 22 nm southeast of the line, tower	marginal VFR Sky: a broken layer at 1,100 feet, overcast at 2,000 feet Weather: rain	from the northeast (040°) at 4 knots	7 mi	1,100 ft	377 ft	00:51 UTC
GFL Glens Falls, NY	315 nm out, 19 nm southeast of the line	IFR Sky: a broken layer at 700 feet, overcast at 1,600 feet Weather: light rain	from the north-northeast (020°) at 5 knots	10+ mi	700 ft	328 ft	03:30 UTC
LKP Lake Placid, NY	354 nm out, 23 nm northwest of the line	marginal VFR Sky: overcast at 2,600 feet Weather: light rain, mist	variable at 1 knots	5 mi	2,600 ft	1,747 ft	03:15 UTC
BTV Burlington, VT	destination	VFR Sky: a broken layer at 4,100 feet, overcast at 5,000 feet Weather: light rain	from the south (170°) at 4 knots	10+ mi	4,100 ft	334 ft	10:54 pm EDT (02:54 UTC)

The highest airport on this list sits at 1,747 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At BTV when you get there the forecast at the estimated arrival, 1:49 am EDT (05:49 UTC)

Wind from the south at 7 knots, visibility more than 6 miles, overcast at 3,500 feet VFR

30% chance between Mon 12:00 am EDT (04:00 UTC) and 2:00 am EDT (06:00 UTC): visibility 5 miles, light rain, mist marginal VFR

The whole forecast for BTV

From Sun 8:00 pm EDT (00:00 UTC): wind from the south at 8 knots, gusting to 16, visibility more than 6 miles, overcast at 6,000 feet
30% chance between Sun 8:00 pm EDT (00:00 UTC) and 12:00 am EDT (04:00 UTC): visibility 5 miles, light rain, mist, overcast at 3,500 feet
From Mon 12:00 am EDT (04:00 UTC): wind from the south at 7 knots, visibility more than 6 miles, overcast at 3,500 feet
30% chance between Mon 12:00 am EDT (04:00 UTC) and 2:00 am EDT (06:00 UTC): visibility 5 miles, light rain, mist
From Mon 5:00 am EDT (09:00 UTC): wind light and variable, visibility more than 6 miles, overcast at 1,500 feet
From Mon 8:00 am EDT (12:00 UTC): wind light and variable, visibility more than 6 miles, a broken layer at 4,000 feet
From Mon 2:00 pm EDT (18:00 UTC): wind from the north at 6 knots, visibility more than 6 miles, a broken layer at 2,500 feet

The forecast for IAD, the departure

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

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

4/9383 WASHINGTON, DC., USA 5 nm from the route, at the departure end · security · ZDC
6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local on the route, at the departure end · a VIP movement · today · ZDC
6/8800 Baltimore, MD, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 24 nm from the route, 39 nm along the route · drones kept away from a public gathering · starts Saturday 17 October · ZDC

Daylight

Sunset at IAD 6:36 pm EDT (22:36 UTC), at BTV 6:13 pm EDT (22:13 UTC) (civil twilight ends 6:43 pm EDT (22:43 UTC)). At 120 knots the arrival at BTV is before sunrise there (7:03 am EDT (11:03 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, 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, Patrick Leahy Burlington International.