Philadelphia International to Bozeman Yellowstone International PHL → BZN
1,606 nautical miles (1,848 statute miles) northwest on a straight line, true course 295°, about 307° magnetic at the departure end (variation 12W). At 120 knots that is 14 h 28 min at the quickest height in today's winds (4,500 ft, a 9-knot headwind), arriving about 11:13 pm MDT (05:13 UTC), after sunset at the destination. 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 11:55 am EDT (15:55 UTC). Near the route, 1167 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 TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 40,000 ft. Near the route, at the departure end.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 90 to 219 nm out.
- AIRMET SIERRA 1E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, mist). Over the route from 130 to 309 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 718 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 1437 to 1496 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 140 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 18,000 ft. Over the last 90 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 PHL.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
Not fetched just now.
Winds aloft along the route, and the time en route the forecast for use 14:00–21:00 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 (ACY, PSB, AGC, CLE, FWA, MKG, GRB, LSE, MSP, AXN, ABR, PIR, DIK, 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 | 270° at 9 kt | +9 kt | 5 °C | 111 kt | 14 h 28 min | 11:13 pm MDT (05:13 UTC) |
| 6,500 ft | 260° at 12 kt | +12 kt | 12 °C | 108 kt | 14 h 52 min | 11:37 pm MDT (05:37 UTC) |
| 8,500 ft | 260° at 16 kt | +16 kt | 9 °C | 104 kt | 15 h 27 min | 12:12 am MDT (06:12 UTC) |
| 10,500 ft | 260° at 18 kt | +18 kt | 5 °C | 102 kt | 15 h 45 min | 12:30 am MDT (06:30 UTC) |
| 12,500 ft | 260° at 19 kt | +19 kt | 2 °C | 101 kt | 15 h 54 min | 12:39 am MDT (06:39 UTC) |
| 14,500 ft | 260° at 21 kt | +21 kt | -3 °C | 99 kt | 16 h 13 min | 12:58 am MDT (06:58 UTC) |
| 16,500 ft | 260° at 23 kt | +22 kt | -7 °C | 98 kt | 16 h 23 min | 1:08 am MDT (07:08 UTC) |
| 18,000 ft FL180 | 260° at 24 kt | +23 kt | -10 °C | 97 kt | 16 h 33 min | 1:18 am MDT (07:18 UTC) |
| 24,000 ft FL240 | 250° at 30 kt | +28 kt | -23 °C | 92 kt | 17 h 27 min | 2:12 am MDT (08:12 UTC) |
| 30,000 ft FL300 | 260° at 37 kt | +35 kt | -35 °C | 85 kt | 18 h 54 min | 3:39 am MDT (09:39 UTC) |
| 34,000 ft FL340 | 260° at 41 kt | +41 kt | -40 °C | 79 kt | 20 h 20 min | 5:05 am MDT (11:05 UTC) |
| 39,000 ft FL390 | 270° at 48 kt | +50 kt | -47 °C | 70 kt | 22 h 57 min | 7:42 am MDT (13:42 UTC) |
Based on data from the 12th at 12:00 UTC; valid on the 12th at 18:00 UTC for use 14:00 to 21:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| ACY | used from 0 nm out; 64 nm from the line | 010/26 | 360/24 11° | 350/28 8° | 350/26 4° | 340/29 -8° | 350/39 -21° | 350/57 -35° | 350/52 -43° | 310/50 -50° |
| PSB | used from 50 nm out; 69 nm from the line | 330/23 14° | 340/24 9° | 340/25 3° | 320/24 -8° | 300/29 -20° | 310/39 -36° | 310/52 -46° | 310/56 -50° | |
| AGC | used from 200 nm out; 60 nm from the line | 270/15 | 320/17 14° | 320/22 9° | 340/23 4° | 310/25 -8° | 290/30 -19° | 280/40 -36° | 290/49 -45° | 300/53 -49° |
| CLE | used from 249 nm out; 49 nm from the line | 280/17 | 270/17 14° | 280/22 10° | 290/26 4° | 290/25 -8° | 280/31 -21° | 280/35 -36° | 280/43 -44° | 300/53 -48° |
| FWA | used from 399 nm out; 107 nm from the line | 250/18 | 260/22 15° | 260/27 7° | 290/26 6° | 290/28 -8° | 290/39 -20° | 280/36 -37° | 290/54 -39° | 310/60 -48° |
| MKG | used from 449 nm out; 58 nm from the line | 240/27 | 240/26 15° | 270/27 9° | 280/27 5° | 280/28 -9° | 280/32 -22° | 270/41 -38° | 290/44 -41° | 300/60 -48° |
| GRB | used from 599 nm out; 60 nm from the line | 260/10 | 240/27 16° | 260/31 10° | 270/25 5° | 280/31 -10° | 280/35 -22° | 270/46 -37° | 290/43 -40° | 300/64 -48° |
| LSE | used from 698 nm out; 32 nm from the line | 240/16 | 230/27 20° | 250/35 12° | 260/28 5° | 260/30 -9° | 260/37 -21° | 260/38 -36° | 280/44 -37° | 280/52 -47° |
| MSP | used from 798 nm out; 39 nm from the line | 140/8 | 210/22 19° | 230/31 13° | 240/31 5° | 240/29 -9° | 250/34 -21° | 250/38 -36° | 260/46 -38° | 270/55 -47° |
| AXN | used from 898 nm out; 73 nm from the line | 110/18 | 200/12 17° | 220/22 12° | 230/26 4° | 240/31 -10° | 240/45 -21° | 240/38 -36° | 250/49 -38° | 260/56 -47° |
| ABR | used from 998 nm out; 54 nm from the line | 020/9 | 230/5 12° | 190/14 11° | 200/25 5° | 230/37 -11° | 230/50 -23° | 240/39 -34° | 240/49 -38° | 240/55 -46° |
| PIR | used from 1147 nm out; 62 nm from the line | 300/15 10° | 270/10 10° | 220/18 4° | 220/36 -11° | 230/43 -21° | 240/48 -33° | 240/51 -37° | 240/55 -44° | |
| DIK | used from 1197 nm out; 88 nm from the line | 330/11 1° | 230/20 4° | 220/22 0° | 230/29 -12° | 240/27 -25° | 240/40 -34° | 230/49 -37° | 240/55 -44° | |
| MLS | used from 1297 nm out; 81 nm from the line | 320/9 -2° | 270/14 0° | 260/22 -1° | 220/30 -14° | 210/43 -26° | 230/53 -34° | 230/54 -38° | 230/59 -44° | |
| BIL | used from 1447 nm out; 26 nm from the line | L/V | 250/11 -1° | 240/20 -2° | 230/28 -15° | 220/28 -28° | 220/53 -34° | 220/55 -39° | 220/63 -44° | |
| DLN | used from 1596 nm out; 71 nm from the line | L/V -3° | 170/16 -6° | 180/21 -18° | 190/27 -30° | 210/63 -33° | 210/62 -36° | 210/51 -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 |
|---|---|---|---|---|---|---|---|
| PHL Philadelphia, PA | departure | no report just now | 35 ft | ||||
| LNS Lancaster, PA | 50 nm out, 6 nm southwest of the line, tower | no report just now | 402 ft | ||||
| CGF Cleveland, OH | 299 nm out, 16 nm southwest of the line, tower | no report just now | 876 ft | ||||
| LAN Lansing, MI | 459 nm out, 8 nm northeast of the line, tower | no report just now | 860 ft | ||||
| GRR Grand Rapids, MI | 499 nm out, 2 nm east of the line, tower | no report just now | 793 ft | ||||
| CMY Sparta, WI | 728 nm out, 5 nm west of the line, tower | no report just now | 839 ft | ||||
| RST Rochester, MN | 808 nm out, 22 nm south of the line, tower | no report just now | 1,317 ft | ||||
| ATY Watertown, SD | 1018 nm out, 4 nm southeast of the line | no report just now | 1,749 ft | ||||
| MBG Mobridge, SD | 1157 nm out, 15 nm north of the line | no report just now | 1,716 ft | ||||
| BIL Billings, MT | 1496 nm out, 3 nm north of the line, tower | no report just now | 3,662 ft | ||||
| BZN Bozeman, MT | destination | no report just now | 4,473 ft |
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, 11:13 pm MDT (05:13 UTC)
BZN has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local on the route, 239 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, 259 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, 259 nm along the route · a VIP movement · today · ZOB
- 6/8992 Monroe, MI, Thursday, October 15, 2026 Local 19 nm from the route, 389 nm along the route · a VIP movement · starts Thursday 15 October · ZOB
Daylight
Sunset at PHL 6:26 pm EDT (22:26 UTC), at BZN 6:42 pm MDT (00:42 UTC) (civil twilight ends 7:12 pm MDT (01:12 UTC)). At 120 knots the arrival at BZN is after sunset there (6:44 pm MDT (00:44 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
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: Philadelphia International, Bozeman Yellowstone International.