Plan a flight · Mon 1:17 am EDT (05:17 UTC)

Washington Dulles International to Bozeman Yellowstone International IAD → BZN

1,537 nautical miles (1,769 statute miles) northwest on a straight line, true course 296°, about 306° magnetic at the departure end (variation 10W). At 120 knots that is 13 h 36 min at the quickest height in today's winds (4,500 ft, a 7-knot headwind), arriving about 12:53 pm MDT (18:53 UTC). Right now IAD is IFR, wind from the north-northwest (340°) at 12 knots; BZN is low IFR, wind from the south-southwest (200°) 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: 103 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 E19E: thunderstorms (a convective SIGMET) up to 43,000 ft, moving from the southwest at 20 knots, until 2:55 am EDT (06:55 UTC). Over the first 110 nm of the route.

as issued

WSUS31 KKCI 120455
MKCE WST 120455
CONVECTIVE SIGMET 19E
VALID UNTIL 0655Z
CT NY NJ PA DE MD VA DC WV AND DE NJ NY MD CT VA CSTL WTRS
FROM 20NNW HTO-70SSE HTO-90SE SIE-20WNW LYH-40ESE AIR-20NNW HTO
AREA EMBD TS MOV FROM 24020KT. TOPS TO FL430.

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 469 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the first 80 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 170 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 609 to 779 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 last 649 nm of the route.
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 1238 to 1328 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Near the route, 1278 nm along the route.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 1288 to 1388 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 1308 to 1437 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 110 nm of the route.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 90 nm of the route.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Near the route, at the destination end.

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, 2 nm southwest, 11:11 pm EDT (03:11 UTC): moderate clear-air turbulence from 20,000 ft to 25,000 ft. At the departure end, 2 nm southwest 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
B712 descending, 39 nm east, 11:10 pm EDT (03:10 UTC): remarks: light rain light chop bases 50,000 ft ft. At the departure 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
E75S at 22,000 ft, 46 nm north, 10:51 pm EDT (02:51 UTC): light to moderate turbulence, remarks: zob. 90 nm along the route, 46 nm north of the line.
as filed, and in English
```
JST UA /OV JST/TM 0251/FL220/TP E75S/TB LGHT-MOD/RM ZOB
```
Report
a routine report filed through JST
Where
over JST
Time
02:51 UTC
Height
at 22,000 ft
Aircraft
E75S
Turbulence
lght-mod
Remarks
zob
BCS3 climbing, 48 nm south, 10:27 pm EDT (02:27 UTC): a routine report with nothing remarked on. 260 nm along the route, 48 nm south of the line.
as filed, and in English
```
CMH UA /OV CMH/TM 0227/FLDURC/TP BCS3/SK B010
```
Report
a routine report filed through CMH
Where
over CMH
Time
02:27 UTC
Height
during the climb
Aircraft
BCS3
Sky
B010
B738 at 1,300 ft, 24 nm north, 12:45 am EDT (04:45 UTC): overcast from 1,300 ft to 3,000 ft, remarks: during the descent. 329 nm along the route, 24 nm north of the line.
as filed, and in English
```
TOL UA /OV KTOL/TM 0445/FL013/TP B738/SK OVC013-TOP030/RM DURD
```
Report
a routine report filed through TOL
Where
over KTOL
Time
04:45 UTC
Height
at 1,300 ft
Aircraft
B738
Sky
overcast from 1,300 ft, tops 3,000 ft
Remarks
during the descent
PA44 descending, 24 nm north, 10:27 pm EDT (02:27 UTC): a broken layer from 900 ft to 1,500 ft; a broken layer from 2,600 ft to 3,500 ft, fog. 329 nm along the route, 24 nm north of the line.
as filed, and in English
```
TOL UA /OV TOL/TM 0227/FLDURD/TP PA44/SK BKN009 TOPS015 BKN026 TOPS035/WX FG
```
Report
a routine report filed through TOL
Where
over TOL
Time
02:27 UTC
Height
during the descent
Aircraft
PA44
Sky
BKN009 TOPS015 BKN026 TOPS035
Weather
fog
LJ45 at 10,000 ft, 24 nm southwest, 12:31 am EDT (04:31 UTC): no turbulence, clear, remarks: ground fog at fwa FV10SM on final runway 14. 389 nm along the route, 24 nm southwest of the line.
as filed, and in English
```
FWA UA /OV OLK/TM 0431/FL100/TP LJ45/SK CLR/TB SMOOTH/RM GROUND FOG AT FWA. FV10SM ON FINAL RY 14
```
Report
a routine report filed through FWA
Where
over OLK
Time
04:31 UTC
Height
at 10,000 ft
Aircraft
LJ45
Sky
clear
Turbulence
smooth
Remarks
ground fog at fwa FV10SM on final runway 14
A321 at 16,500 ft, 46 nm north, 11:25 pm EDT (03:25 UTC): light turbulence, remarks: during the climb. 809 nm along the route, 46 nm north of the line.
as filed, and in English
```
MSP UA /OV MSP235040/TM 0325/FL165/TP A321/TB CONS LGT /RM DURC
```
Report
a routine report filed through MSP
Where
40 nm southwest (235°) of MSP
Time
03:25 UTC
Height
at 16,500 ft
Aircraft
A321
Turbulence
continuous light
Remarks
during the climb
GLF5 descending, 0 nm northwest, 11:46 pm EDT (03:46 UTC): remarks: broke out 100-150FT above ground. At the destination end, 0 nm northwest 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

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 16 forecast points nearest it (EKN, AGC, CLE, CMH, FWA, JOT, DBQ, LSE, MCW, FSD, ABR, PIR, RAP, MLS, BIL, DLN). 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 10 kt	+7 kt	12 °C	113 kt	13 h 36 min	12:53 pm MDT (18:53 UTC)
6,500 ft	250° at 10 kt	+9 kt	14 °C	111 kt	13 h 51 min	1:08 pm MDT (19:08 UTC)
8,500 ft	250° at 10 kt	+9 kt	10 °C	111 kt	13 h 51 min	1:08 pm MDT (19:08 UTC)
10,500 ft	240° at 13 kt	+11 kt	6 °C	109 kt	14 h 06 min	1:23 pm MDT (19:23 UTC)
12,500 ft	240° at 16 kt	+14 kt	3 °C	106 kt	14 h 30 min	1:47 pm MDT (19:47 UTC)
14,500 ft	250° at 17 kt	+16 kt	-2 °C	104 kt	14 h 47 min	2:04 pm MDT (20:04 UTC)
16,500 ft	260° at 19 kt	+19 kt	-6 °C	101 kt	15 h 13 min	2:30 pm MDT (20:30 UTC)
18,000 ft FL180	260° at 20 kt	+21 kt	-9 °C	99 kt	15 h 32 min	2:49 pm MDT (20:49 UTC)
24,000 ft FL240	260° at 25 kt	+25 kt	-21 °C	95 kt	16 h 11 min	3:28 pm MDT (21:28 UTC)
30,000 ft FL300	260° at 28 kt	+29 kt	-35 °C	91 kt	16 h 53 min	4:10 pm MDT (22:10 UTC)
34,000 ft FL340	270° at 43 kt	+44 kt	-41 °C	76 kt	20 h 13 min	7:30 pm MDT (01:30 UTC)
39,000 ft FL390	270° at 48 kt	+50 kt	-48 °C	70 kt	21 h 57 min	9:14 pm MDT (03:14 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
EKN	used from 0 nm out; 91 nm from the line		330/21 12°	330/25 7°	350/22 2°	330/24 -10°	310/27 -21°	320/33 -35°	290/31 -39°	290/34 -47°
AGC	used from 100 nm out; 31 nm from the line	350/14	330/20 11°	340/18 8°	330/17 3°	340/22 -11°	340/31 -22°	330/33 -36°	300/34 -41°	300/35 -47°
CLE	used from 200 nm out; 53 nm from the line	340/7	010/16 13°	350/18 8°	350/20 3°	340/31 -10°	340/46 -21°	340/54 -37°	330/62 -44°	340/65 -49°
CMH	used from 250 nm out; 52 nm from the line	330/15	340/22 14°	340/24 9°	340/23 4°	340/35 -9°	340/49 -20°	340/58 -37°	330/70 -42°	340/55 -47°
FWA	used from 299 nm out; 60 nm from the line	300/17	320/20 16°	330/20 10°	340/15 3°	310/27 -8°	320/37 -20°	330/52 -36°	330/65 -43°	330/60 -50°
JOT	used from 449 nm out; 63 nm from the line	250/23	270/22 15°	250/16 10°	240/9 4°	280/22 -7°	280/29 -19°	300/29 -34°	290/50 -43°	300/64 -52°
DBQ	used from 549 nm out; 72 nm from the line	230/33	250/30 16°	280/15 9°	260/15 5°	260/21 -7°	260/24 -20°	250/37 -33°	270/42 -43°	280/63 -52°
LSE	used from 649 nm out; 43 nm from the line	230/40	240/24 17°	240/13 10°	250/13 6°	280/22 -9°	250/28 -21°	250/41 -34°	260/42 -44°	270/62 -53°
MCW	used from 699 nm out; 44 nm from the line	220/44	250/30 17°	230/14 12°	240/17 6°	250/22 -8°	270/29 -20°	250/34 -34°	260/52 -43°	260/59 -51°
FSD	used from 848 nm out; 54 nm from the line	190/9	230/30 18°	240/23 13°	240/20 6°	260/22 -9°	250/31 -21°	250/43 -36°	260/49 -43°	270/53 -47°
ABR	used from 948 nm out; 63 nm from the line	070/14	250/10 17°	270/16 11°	260/28 5°	260/36 -10°	260/41 -22°	270/33 -37°	260/42 -42°	260/50 -48°
PIR	used from 998 nm out; 53 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 1148 nm out; 67 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°
MLS	used from 1248 nm out; 77 nm from the line		150/23 2°	190/29 4°	210/44 2°	220/32 -10°	210/36 -21°	200/48 -37°	230/63 -40°	240/71 -47°
BIL	used from 1348 nm out; 57 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 1497 nm out; 85 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°

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, mist	from the north-northwest (340°) at 12 knots	4 mi	600 ft	312 ft	12:52 am EDT (04:52 UTC)
MGW Morgantown, WV	120 nm out, 12 nm southwest of the line, tower	IFR Sky: a broken layer at 700 feet, overcast at 1,000 feet	from the west-northwest (300°) at 3 knots	10+ mi	700 ft	1,243 ft	04:53 UTC
MFD Mansfield, OH	260 nm out, 4 nm northeast of the line, tower	low IFR Sky: overcast at 300 feet Weather: mist	from the northwest (310°) at 5 knots	5 mi	300 ft	1,297 ft	04:52 UTC
EKM Elkhart, IN	429 nm out, 7 nm south of the line, tower	IFR Weather: mist	calm	2 mi	none	777 ft	04:55 UTC
JVL Janesville, WI	569 nm out, 1 nm west of the line, tower	VFR	calm	10+ mi	none	807 ft	04:55 UTC
MRJ Mineral Point, WI	629 nm out, 4 nm southeast of the line	no report just now				1,170 ft
MWM Windom, MN	848 nm out, 3 nm southeast of the line	VFR	from the north-northwest (340°) at 4 knots	10+ mi	none	1,410 ft	05:01 UTC
BKX Brookings, SD	928 nm out, 5 nm east of the line	VFR	calm	10+ mi	none	1,647 ft	04:56 UTC
BIL Billings, MT	1427 nm out, 10 nm north of the line, tower	marginal VFR Sky: overcast at 1,200 feet Weather: light rain, light snow, mist	from the north-northwest (340°) at 7 knots	4 mi	1,200 ft	3,662 ft	04:53 UTC
BZN Bozeman, MT	destination	low IFR Sky: a broken layer at 400 feet, overcast at 2,000 feet Weather: light snow, mist	from the south-southwest (200°) at 4 knots	1.5 mi	400 ft	4,473 ft	11:08 pm MDT (05:08 UTC)

The highest airport on this list sits at 4,473 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At BZN when you get there the forecast at the estimated arrival, 12:53 pm MDT (18:53 UTC)

Wind light and variable, visibility more than 6 miles, scattered clouds at 800 feet, overcast at 2,000 feet marginal VFR

The whole forecast for BZN

From Sun 6:00 pm MDT (00:00 UTC): wind light and variable, visibility ½ mile, snow, fog, overcast at 300 feet
At times between Sun 9:00 pm MDT (03:00 UTC) and 12:00 am MDT (06:00 UTC): visibility 2 miles, light snow, mist, scattered clouds at 300 feet, overcast at 1,200 feet
From Mon 12:00 am MDT (06:00 UTC): wind from the west at 7 knots, visibility 2 miles, light snow, mist, overcast at 800 feet
At times between Mon 12:00 am MDT (06:00 UTC) and 3:00 am MDT (09:00 UTC): visibility 6 miles, light snow, mist, overcast at 800 feet
From Mon 3:00 am MDT (09:00 UTC): wind light and variable, visibility more than 6 miles, overcast at 800 feet
From Mon 12:00 pm MDT (18:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 800 feet, overcast at 2,000 feet
From Mon 5:00 pm MDT (23:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 1,500 feet, a broken layer at 11,000 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 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
6/8829 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 25 nm from the route, 190 nm along the route · a VIP movement · today · ZOB
6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 25 nm from the route, 190 nm along the route · a VIP movement · today · ZOB

Daylight

Sunset at IAD 6:36 pm EDT (22:36 UTC), at BZN 6:44 pm MDT (00:44 UTC) (civil twilight ends 7:14 pm MDT (01:14 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 central Great Lakes · 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: Washington Dulles International, Bozeman Yellowstone International.