Plan a flight · Mon 8:02 am MDT (14:02 UTC)

Bozeman Yellowstone International to Philadelphia International BZN → PHL

1,606 nautical miles (1,848 statute miles) east on a straight line, true course 090°, about 077° magnetic at the departure end (variation 13E). At 120 knots that is 9 h 24 min at the quickest height in today's winds (39,000 ft, a 51-knot tailwind), arriving about 7:26 pm EDT (23:26 UTC), after sunset at the destination. Right now BZN is IFR, wind from the southwest (220°) at 4 knots; PHL is marginal VFR, wind from the north (360°) at 11 knots, gusting to 19. 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 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 C20C: thunderstorms (a convective SIGMET) up to 37,000 ft, moving from the southwest at 40 knots, until 9:55 am MDT (15:55 UTC). Near the route, 439 nm along the route.
as issued
```
WSUS32 KKCI 121355
MKCC WST 121355
CONVECTIVE SIGMET 20C
VALID UNTIL 1555Z
SD ND
FROM 80W GFK-40WNW FAR-40W ABR-50ENE DPR-30S BIS-80W GFK
AREA TS MOV FROM 21040KT. TOPS TO FL370.
```
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 first 718 nm of the route.
AIRMET ZULU 2C: moderate icing up to 18,000 ft. Over the first 90 nm of the route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 140 nm of the route.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 110 to 170 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 1337 to 1467 nm out.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 1387 to 1526 nm out.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 40,000 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 BZN.

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

E170 at 15,000 ft, 37 nm north, 5:56 am MDT (11:56 UTC): moderate chop turbulence. 918 nm along the route, 37 nm north of the line.
as filed, and in English
```
Y50 UA /OV Y50330025/TM 1156/FL150/TP E170/TB MOD CHOP
```
Report
a routine report filed through Y50
Where
25 nm northwest (330°) of Y50
Time
11:56 UTC
Height
at 15,000 ft
Aircraft
E170
Turbulence
moderate chop
E170 at 28,000 ft, 7 nm southeast, 7:10 am MDT (13:10 UTC): moderate chop turbulence. 1107 nm along the route, 7 nm southeast of the line.
as filed, and in English
```
GRR UA /OV VIO/TM 1310/FL280/TP E170/TB OCNL MOD CHOP
```
Report
a routine report filed through GRR
Where
over VIO
Time
13:10 UTC
Height
at 28,000 ft
Aircraft
E170
Turbulence
occasional moderate chop
B738 at 36,000 ft, 10 nm southwest, 6:54 am MDT (12:54 UTC): moderate turbulence. At the destination end, 10 nm southwest of the line.
as filed, and in English
```
PTW UA /OV MXE240005/TM 1254/FL360/TP B738/TB MOD
```
Report
a routine report filed through PTW
Where
5 nm southwest (240°) of MXE
Time
12:54 UTC
Height
at 36,000 ft
Aircraft
B738
Turbulence
moderate
GLF4 descending, 0 nm northwest, 7:48 am MDT (13:48 UTC): a routine report with nothing remarked on. At the departure end, 0 nm northwest of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 1348/FLDURD/TP GLF4/SK 047
```
Report
a routine report filed through BZN
Where
over BZN
Time
13:48 UTC
Height
during the descent
Aircraft
GLF4
Sky
at 4,700 ft
C340 descending, 0 nm northwest, 6:47 am MDT (12:47 UTC): light icing, remarks: smooth. At the departure end, 0 nm northwest of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 1247/FLDURD/TP C340/SK 055/IC LGT RM/RM SMOOTH
```
Report
a routine report filed through BZN
Where
over BZN
Time
12:47 UTC
Height
during the descent
Aircraft
C340
Sky
at 5,500 ft
Icing
light remarks
Remarks
smooth
C25A at 5,000 ft, 5 nm northwest, 7:00 am MDT (13:00 UTC): light rime icing, 4 °C, remarks: lt rime in the descent. 110 nm along the route, 5 nm northwest of the line.
as filed, and in English
```
BIL UA /OV 100006/TM 1300/FL050/TP C25A/TA 4/IC LT RIME/RM LT RIME IN THE DESCENT
```
Report
a routine report filed through BIL
Where
wind from 100° at 6 knots
Time
13:00 UTC
Height
at 5,000 ft
Aircraft
C25A
Temperature
4 °C
Icing
lt rime
Remarks
lt rime in the descent
A321 at 35,000 ft, 15 nm north, 7:38 am MDT (13:38 UTC): no turbulence. 449 nm along the route, 15 nm north of the line.
as filed, and in English
```
MBG UA /OV MBG/TM 1338/FL350/TP A321/SK TOP310/TB NEG
```
Report
a routine report filed through MBG
Where
over MBG
Time
13:38 UTC
Height
at 35,000 ft
Aircraft
A321
Sky
TOP310
Turbulence
none
C441 at 5,000 ft, 19 nm north, 5:52 am MDT (11:52 UTC): no turbulence, no icing, remarks: during the climb. 539 nm along the route, 19 nm north of the line.
as filed, and in English
```
ABR UA /OV ABR/TM 1152/FL050/TP C441/SK BASEUNKN-TOP032/TB NEG/IC NEG/RM DURC
```
Report
a routine report filed through ABR
Where
over ABR
Time
11:52 UTC
Height
at 5,000 ft
Aircraft
C441
Sky
BASEUNKN-TOP032
Turbulence
none
Icing
none
Remarks
during the climb
C25A at 7,500 ft, 4 nm east, 6:31 am MDT (12:31 UTC): no turbulence, no icing, remarks: during the climb. 589 nm along the route, 4 nm east of the line.
as filed, and in English
```
ATY UA /OV ATY/TM 1231/FL075/TP C25A/SK BASEUNKN/TB NEG/IC NEG/RM DURC
```
Report
a routine report filed through ATY
Where
over ATY
Time
12:31 UTC
Height
at 7,500 ft
Aircraft
C25A
Sky
baseunkn
Turbulence
none
Icing
none
Remarks
during the climb
SF50 at 13,000 ft, 13 nm south, 7:36 am MDT (13:36 UTC): no turbulence, no icing, clear from 13,000 ft to 60,000 ft. 678 nm along the route, 13 nm south of the line.
as filed, and in English
```
RWF UA /OV RWF/TM 1336/FL130/TP SF50/SK SKC/TB NEG/IC NEG
```
Report
a routine report filed through RWF
Where
over RWF
Time
13:36 UTC
Height
at 13,000 ft
Aircraft
SF50
Sky
clear
Turbulence
none
Icing
none
PC12 at 20,000 ft, 38 nm south, 7:27 am MDT (13:27 UTC): no turbulence. 908 nm along the route, 38 nm south of the line.
as filed, and in English
```
LNR UA /OV 0WI4/TM 1327/FL200/TP PC12/TB NEG
```
Report
a routine report filed through LNR
Where
over 0WI4
Time
13:27 UTC
Height
at 20,000 ft
Aircraft
PC12
Turbulence
none
C510 at 17,000 ft, 38 nm south, 7:27 am MDT (13:27 UTC): no turbulence. 908 nm along the route, 38 nm south of the line.
as filed, and in English
```
LNR UA /OV LNR/TM 1327/FL170/TP C510/TB NEG
```
Report
a routine report filed through LNR
Where
over LNR
Time
13:27 UTC
Height
at 17,000 ft
Aircraft
C510
Turbulence
none
B752 at 32,000 ft, 32 nm southwest, 7:03 am MDT (13:03 UTC): light chop turbulence. 1097 nm along the route, 32 nm southwest of the line.
as filed, and in English
```
BIV UA /OV PMM/TM 1303/FL320/TP B752/TB CONS LGT CHOP
```
Report
a routine report filed through BIV
Where
over PMM
Time
13:03 UTC
Height
at 32,000 ft
Aircraft
B752
Turbulence
continuous light chop
B739 at 34,000 ft, 47 nm north, 5:49 am MDT (11:49 UTC): no turbulence. 1167 nm along the route, 47 nm north of the line.
as filed, and in English
```
FNT UA /OV FNT340025/TM 1149/FL340/TP B739/TB NEG
```
Report
a routine report filed through FNT
Where
25 nm north (340°) of FNT
Time
11:49 UTC
Height
at 34,000 ft
Aircraft
B739
Turbulence
none

16 more routine reports are on the map.

Winds aloft along the route, and the time en route the forecast for use 08:00–15:00 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 14 forecast points nearest it (BIL, MLS, DIK, PIR, ABR, AXN, MSP, LSE, GRB, MKG, CLE, AGC, PSB, ACY). 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	260° at 12 kt	−11 kt		131 kt	12 h 16 min	10:18 pm EDT (02:18 UTC)
5,500 ft	280° at 10 kt	−10 kt	7 °C	130 kt	12 h 21 min	10:23 pm EDT (02:23 UTC)
7,500 ft	270° at 12 kt	−13 kt	11 °C	133 kt	12 h 05 min	10:07 pm EDT (02:07 UTC)
9,500 ft	260° at 15 kt	−15 kt	7 °C	135 kt	11 h 54 min	9:56 pm EDT (01:56 UTC)
11,500 ft	260° at 17 kt	−18 kt	4 °C	138 kt	11 h 38 min	9:40 pm EDT (01:40 UTC)
13,500 ft	260° at 19 kt	−19 kt	0 °C	139 kt	11 h 33 min	9:35 pm EDT (01:35 UTC)
15,500 ft	260° at 20 kt	−21 kt	-5 °C	141 kt	11 h 23 min	9:25 pm EDT (01:25 UTC)
17,500 ft	260° at 21 kt	−22 kt	-9 °C	142 kt	11 h 19 min	9:21 pm EDT (01:21 UTC)
18,000 ft FL180	270° at 21 kt	−22 kt	-10 °C	142 kt	11 h 19 min	9:21 pm EDT (01:21 UTC)
24,000 ft FL240	260° at 25 kt	−26 kt	-22 °C	146 kt	11 h	9:02 pm EDT (01:02 UTC)
30,000 ft FL300	260° at 32 kt	−33 kt	-35 °C	153 kt	10 h 30 min	8:32 pm EDT (00:32 UTC)
34,000 ft FL340	270° at 40 kt	−42 kt	-41 °C	162 kt	9 h 55 min	7:57 pm EDT (23:57 UTC)
39,000 ft FL390	270° at 49 kt	−51 kt	-48 °C	171 kt	9 h 24 min	7:26 pm EDT (23:26 UTC)

Based on data from the 12th at 06:00 UTC; valid on the 12th at 12:00 UTC for use 08:00 to 15:00 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
BIL	used from 0 nm out; 84 nm from the line		300/14	270/19 -2°	260/26 -2°	220/28 -13°	210/51 -25°	220/56 -33°	220/61 -39°	220/72 -45°
MLS	used from 150 nm out; 63 nm from the line		290/17 -1°	250/18 0°	230/25 0°	220/31 -11°	220/32 -24°	220/50 -32°	220/60 -38°	230/71 -46°
DIK	used from 299 nm out; 80 nm from the line		190/12 5°	230/29 7°	220/33 1°	220/43 -11°	210/47 -23°	220/53 -33°	240/56 -40°	250/72 -47°
PIR	used from 399 nm out; 67 nm from the line		230/15 15°	220/22 14°	220/24 6°	200/32 -10°	210/48 -22°	240/45 -33°	240/43 -37°	250/55 -46°
ABR	used from 499 nm out; 23 nm from the line	080/12	210/12 17°	220/22 12°	230/26 5°	220/28 -10°	230/41 -21°	250/36 -36°	260/47 -39°	260/63 -47°
AXN	used from 599 nm out; 74 nm from the line	110/6	260/10 16°	240/17 12°	250/20 5°	260/29 -10°	260/35 -22°	260/29 -38°	270/48 -41°	270/61 -48°
MSP	used from 698 nm out; 44 nm from the line	250/12	250/17 17°	240/26 12°	250/26 5°	280/26 -9°	280/32 -22°	270/37 -38°	280/47 -41°	280/55 -48°
LSE	used from 798 nm out; 31 nm from the line	250/25	240/21 17°	240/28 11°	250/28 5°	280/24 -10°	280/31 -21°	260/35 -37°	270/45 -43°	280/59 -47°
GRB	used from 948 nm out; 59 nm from the line	250/32	250/22 17°	240/18 8°	280/21 6°	280/34 -11°	280/35 -21°	280/39 -37°	270/52 -45°	290/60 -49°
MKG	used from 998 nm out; 52 nm from the line	260/28	260/18 15°	250/16 9°	260/22 4°	280/31 -9°	270/35 -21°	270/44 -35°	270/42 -45°	290/61 -51°
CLE	used from 1197 nm out; 77 nm from the line	310/7	350/20 14°	340/16 9°	320/21 2°	320/32 -8°	330/34 -20°	330/45 -36°	320/60 -45°	320/64 -51°
AGC	used from 1347 nm out; 63 nm from the line	340/11	350/12 11°	360/25 7°	340/30 2°	340/41 -8°	340/44 -21°	350/59 -36°	340/68 -42°	340/50 -51°
PSB	used from 1397 nm out; 41 nm from the line		020/21 12°	360/28 7°	360/29 1°	350/33 -10°	350/42 -22°	350/49 -37°	340/63 -43°	350/39 -52°
ACY	used from 1546 nm out; 74 nm from the line	350/12	340/12 11°	340/12 6°	340/13 2°	270/10 -10°	240/17 -23°	230/46 -33°	230/46 -40°	240/46 -49°

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
BZN Bozeman, MT	departure	IFR Sky: scattered clouds at 400 feet, overcast at 900 feet Weather: mist	from the southwest (220°) at 4 knots	1.5 mi	900 ft	4,473 ft	7:56 am MDT (13:56 UTC)
BIL Billings, MT	110 nm out, 3 nm north of the line, tower	VFR Sky: scattered clouds at 2,100 feet, overcast at 3,700 feet	from the southwest (220°) at 4 knots	10+ mi	3,700 ft	3,662 ft	13:53 UTC
MBG Mobridge, SD	449 nm out, 15 nm north of the line	IFR Sky: overcast at 900 feet Weather: thunderstorms, mist	from the north-northwest (340°) at 9 knots	3 mi	900 ft	1,716 ft	13:57 UTC
ATY Watertown, SD	589 nm out, 4 nm southeast of the line	low IFR Sky: sky obscured at 300 feet Weather: fog	from the east-northeast (070°) at 8 knots	0.25 mi	300 ft	1,749 ft	13:53 UTC
RST Rochester, MN	798 nm out, 22 nm south of the line, tower	VFR	from the south (190°) at 11 knots	7 mi	none	1,317 ft	13:54 UTC
CMY Sparta, WI	878 nm out, 5 nm west of the line, tower	VFR	calm	10+ mi	none	839 ft	13:55 UTC
GRR Grand Rapids, MI	1107 nm out, 2 nm east of the line, tower	VFR Sky: a broken layer at 25,000 feet	from the south (190°) at 4 knots	10+ mi	25,000 ft	793 ft	13:53 UTC
LAN Lansing, MI	1147 nm out, 8 nm northeast of the line, tower	VFR	from the southwest (220°) at 7 knots	10+ mi	none	860 ft	13:53 UTC
CGF Cleveland, OH	1307 nm out, 16 nm southwest of the line, tower	marginal VFR Sky: overcast at 1,500 feet	from the southwest (230°) at 5 knots	10+ mi	1,500 ft	876 ft	13:45 UTC
LNS Lancaster, PA	1556 nm out, 6 nm southwest of the line, tower	marginal VFR Sky: overcast at 1,900 feet	variable at 5 knots	10+ mi	1,900 ft	402 ft	13:53 UTC
PHL Philadelphia, PA	destination	marginal VFR Sky: overcast at 1,300 feet	from the north (360°) at 11 knots, gusting to 19	10+ mi	1,300 ft	35 ft	9:54 am EDT (13:54 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 PHL when you get there the forecast at the estimated arrival, 7:26 pm EDT (23:26 UTC)

Wind from the northwest at 8 knots, visibility more than 6 miles, scattered clouds at 25,000 feet VFR

The whole forecast for PHL

From Mon 8:00 am EDT (12:00 UTC): wind from the north at 10 knots, gusting to 20, visibility more than 6 miles, overcast at 800 feet
From Mon 11:00 am EDT (15:00 UTC): wind from the north at 10 knots, gusting to 18, visibility 6 miles, mist, a broken layer at 2,500 feet
From Mon 1:00 pm EDT (17:00 UTC): wind from the north-northwest at 10 knots, gusting to 15, visibility more than 6 miles, scattered clouds at 5,000 feet
From Mon 6:00 pm EDT (22:00 UTC): wind from the northwest at 8 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
From Mon 9:00 pm EDT (01:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 25,000 feet
From Tue 12:00 pm EDT (16:00 UTC): wind from the south-southwest at 5 knots, visibility more than 6 miles, a few clouds at 15,000 feet

The forecast for BZN, the departure

From Mon 6:00 am MDT (12:00 UTC): wind light and variable, visibility 6 miles, mist, scattered clouds at 400 feet, overcast at 1,500 feet
At times between Mon 6:00 am MDT (12:00 UTC) and 9:00 am MDT (15:00 UTC): visibility 3 miles, mist, overcast at 400 feet
From Mon 10:00 am MDT (16:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 600 feet, overcast at 1,500 feet
From Mon 7:00 pm MDT (01:00 UTC): wind light and variable, visibility 6 miles, mist, overcast at 300 feet

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

6/8992 Monroe, MI, Thursday, October 15, 2026 Local 19 nm from the route, 1217 nm along the route · a VIP movement · starts Thursday 15 October · ZOB
6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local on the route, 1337 nm along the route · a VIP movement · today · ZOB
6/8888 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 17 nm from the route, 1347 nm along the route · security · today · ZOB
6/8829 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 13 nm from the route, 1347 nm along the route · a VIP movement · today · ZOB

Daylight

Sunset at BZN 6:42 pm MDT (00:42 UTC), at PHL 6:26 pm EDT (22:26 UTC) (civil twilight ends 6:53 pm EDT (22:53 UTC)). At 120 knots the arrival at PHL is after sunset there (6:26 pm EDT (22:26 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 northern Rockies · loop National Weather Service

Radar now, the upper Mississippi valley · 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: Bozeman Yellowstone International, Philadelphia International.