Bozeman Yellowstone International to San Diego International BZN → SAN
831 nautical miles (957 statute miles) south on a straight line, true course 202°, about 189° magnetic at the departure end (variation 13E). At 120 knots that is 7 h 46 min at the quickest height in today's winds (4,500 ft, a 13-knot headwind), arriving about 1:21 am PDT (08:21 UTC), after sunset at the destination. Right now BZN is low IFR, wind calm; SAN is VFR, wind from the west-southwest (250°) 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: 363 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 W71W: thunderstorms (a convective SIGMET) up to 27,000 ft, moving from the south at 40 knots, until 7:55 pm MDT (01:55 UTC). Over the route from 168 to 297 nm out.
as issued
WSUS33 KKCI 112355 MKCW WST 112355 CONVECTIVE SIGMET 71W VALID UNTIL 0155Z WY UT ID FROM 40S DBS-40WNW BPI-30WSW MTU-30SSW DTA-30SE TWF-40S DBS AREA EMBD TS MOV FROM 20040KT. TOPS TO FL270.
- 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 228 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the first 732 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 614 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 20 to 623 nm out.
- 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). Near the route, at the departure end.
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 69 to 722 nm out.
- AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Near the route, 465 nm along the route.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 633 to 812 nm out.
- AIRMET SIERRA 6E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 89 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 BZN.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B738 at 33,000 ft, 2 nm southwest, 5:57 pm MDT (23:57 UTC): moderate chop turbulence from 31,000 ft to 33,000 ft. 79 nm along the route, 2 nm southwest of the line.
as filed, and in English
IDA UA /OV DBS015030/TM 2357/FL330/TP B738/TB MOD CHOP 310-330 /ZLC
- Report
- a routine report filed through IDA
- Where
- 30 nm north (015°) of DBS
- Time
- 23:57 UTC
- Height
- at 33,000 ft
- Aircraft
- B738
- Turbulence
- moderate chop from 31,000 ft to 33,000 ft zlc
- B38M at 14,000 ft, 19 nm northwest, 6:13 pm MDT (00:13 UTC): moderate turbulence, light rime icing, 8 °C. 742 nm along the route, 19 nm northwest of the line.
as filed, and in English
ONT UA /OV ONT053034/TM 0013/FL140/TP B38M/TA 08/TB MODERATE TURBULENCE/IC LIGHT RIME ICE 190 - 170
- Report
- a routine report filed through ONT
- Where
- 34 nm northeast (053°) of ONT
- Time
- 00:13 UTC
- Height
- at 14,000 ft
- Aircraft
- B38M
- Temperature
- 8 °C
- Turbulence
- moderate turbulence
- Icing
- light rime ice at 19,000 ft at 17,000 ft
- B737 at 14,000 ft, 46 nm west, 3:54 pm MDT (21:54 UTC): moderate turbulence. 742 nm along the route, 46 nm west of the line.
as filed, and in English
ONT UA /OV 20N ONT/TM 2154/FL140/TP B737/TB MOD
- Report
- a routine report filed through ONT
- Where
- 20N ont
- Time
- 21:54 UTC
- Height
- at 14,000 ft
- Aircraft
- B737
- Turbulence
- moderate
- B738 descending, 47 nm west, 3:37 pm MDT (21:37 UTC): moderate chop turbulence. 742 nm along the route, 47 nm west of the line.
as filed, and in English
ONT UA /OV ONT358021/TM 2137/FLDURD/TP B738/TB MODERATE CHOP STARTING AT 130
- Report
- a routine report filed through ONT
- Where
- 21 nm north (358°) of ONT
- Time
- 21:37 UTC
- Height
- during the descent
- Aircraft
- B738
- Turbulence
- moderate chop starting at at 13,000 ft
- B737 descending, 0 nm northwest, 6:28 pm MDT (00:28 UTC): scattered clouds above 8,000 ft, fog, snow, remarks: broke out about 100FT above mins. At the departure end, 0 nm northwest of the line.
as filed, and in English
BZN UA /OV BZN/TM 0028/FLDURD/TP B737/SK SCT080/WX 1/2SM SN FG/RM BROKE OUT ABOUT 100FT ABOVE MINS
- Report
- a routine report filed through BZN
- Where
- over BZN
- Time
- 00:28 UTC
- Height
- during the descent
- Aircraft
- B737
- Sky
- scattered clouds from 8,000 ft
- Weather
- 1/2SM, snow, fog
- Remarks
- broke out about 100FT above mins
- B738 at 24,000 ft, 30 nm west, 5:13 pm MDT (23:13 UTC): remarks: snow top flight level at 24,000 ft zlc. At the departure end, 30 nm west of the line.
as filed, and in English
BZN UA /OV BZN270030/TM 2313/FL240/TP B738/RM SN TOP FL 240 /ZLC
- Report
- a routine report filed through BZN
- Where
- 30 nm west (270°) of BZN
- Time
- 23:13 UTC
- Height
- at 24,000 ft
- Aircraft
- B738
- Remarks
- snow top flight level at 24,000 ft zlc
- C68A at 31,000 ft, 40 nm west, 3:49 pm MDT (21:49 UTC): a routine report with nothing remarked on. 158 nm along the route, 40 nm west of the line.
as filed, and in English
SUN UA /OV HLE060040/TM 2149/FL310/TP C68A/SK BASE074-TOP300 /ZLC
- Report
- a routine report filed through SUN
- Where
- 40 nm northeast (060°) of HLE
- Time
- 21:49 UTC
- Height
- at 31,000 ft
- Aircraft
- C68A
- Sky
- BASE074-TOP300; zlc
- C337 at 10,000 ft, 26 nm southeast, 4:04 pm MDT (22:04 UTC): light rime icing, -1 °C. 218 nm along the route, 26 nm southeast of the line.
as filed, and in English
LGU UA /OV MLD 35NW/TM 2204/FL100/TP C337/TA M01/IC LGT RIME /ZLC
- Report
- a routine report filed through LGU
- Where
- mld 35NW
- Time
- 22:04 UTC
- Height
- at 10,000 ft
- Aircraft
- C337
- Temperature
- −1 °C
- Icing
- light rime zlc
- C337 at 12,000 ft, 26 nm southeast, 3:45 pm MDT (21:45 UTC): light rime icing, -1 °C. 218 nm along the route, 26 nm southeast of the line.
as filed, and in English
LGU UA /OV MLD/TM 2145/FL120/TP C337/TA M01/IC LGT RIME /ZLC
- Report
- a routine report filed through LGU
- Where
- over MLD
- Time
- 21:45 UTC
- Height
- at 12,000 ft
- Aircraft
- C337
- Temperature
- −1 °C
- Icing
- light rime zlc
- B73M at 11,000 ft, 31 nm east, 3:45 pm MDT (21:45 UTC): light rime icing, overcast above 11,000 ft. 604 nm along the route, 31 nm east of the line.
as filed, and in English
LAS UA /OV LAS350005/TM 2145/FL110/TP B73M/SK 110 OVC/IC LGT RIME
- Report
- a routine report filed through LAS
- Where
- 5 nm north (350°) of LAS
- Time
- 21:45 UTC
- Height
- at 11,000 ft
- Aircraft
- B73M
- Sky
- at 11,000 ft overcast
- Icing
- light rime
- G280 at 41,000 ft, 28 nm east, 5:37 pm MDT (23:37 UTC): light to moderate clear-air turbulence, remarks: ZDVWC-46. 643 nm along the route, 28 nm east of the line.
as filed, and in English
ALS UA /OV LAS190035/TM 2337/FL410/TP G280/TB LGT-MOD CAT/RM ZDVWC-46
- Report
- a routine report filed through ALS
- Where
- 35 nm south (190°) of LAS
- Time
- 23:37 UTC
- Height
- at 41,000 ft
- Aircraft
- G280
- Turbulence
- light to moderate clear-air turbulence
- Remarks
- ZDVWC-46
- A20N at 23,000 ft, 10 nm east, 3:37 pm MDT (21:37 UTC): light rime icing from 21,000 ft to 23,000 ft, -21 °C, remarks: during the climb zlawc. 653 nm along the route, 10 nm east of the line.
as filed, and in English
CDC UA /OV LAS210050/TM 2137/FL230/TP A20N/TA M21/IC LGT RIME 210-230/RM DURC ZLAWC AWC-WEB
- Report
- a routine report filed through CDC
- Where
- 50 nm southwest (210°) of LAS
- Time
- 21:37 UTC
- Height
- at 23,000 ft
- Aircraft
- A20N
- Temperature
- −21 °C
- Icing
- light rime from 21,000 ft to 23,000 ft
- Remarks
- during the climb zlawc
- BCS3 at 31,000 ft, 7 nm east, 4:44 pm MDT (22:44 UTC): remarks: mountain wave 20 kts/zlawc. 663 nm along the route, 7 nm east of the line.
as filed, and in English
DAG UA /OV DAG030040/TM 2244/FL310/TP BCS3/RM MTN WAVE /- 20 KTS/ZLAWC AWC-WEB
- Report
- a routine report filed through DAG
- Where
- 40 nm northeast (030°) of DAG
- Time
- 22:44 UTC
- Height
- at 31,000 ft
- Aircraft
- BCS3
- Remarks
- mountain wave 20 kts/zlawc
- A21N at 29,500 ft, 7 nm west, 4:50 pm MDT (22:50 UTC): remarks: mountain wave 10-15 kts/zlawc. 683 nm along the route, 7 nm west of the line.
as filed, and in English
DAG UA /OV DAG045010/TM 2250/FL295/TP A21N/RM MTN WAVE /- 10-15 KTS/ZLAWC AWC-WEB
- Report
- a routine report filed through DAG
- Where
- 10 nm northeast (045°) of DAG
- Time
- 22:50 UTC
- Height
- at 29,500 ft
- Aircraft
- A21N
- Remarks
- mountain wave 10-15 kts/zlawc
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 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 7 forecast points nearest it (DLN, PIH, SLC, ELY, LAS, ONT, SAN). 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 | 220° at 13 kt | +13 kt | 11 °C | 107 kt | 7 h 46 min | 1:21 am PDT (08:21 UTC) |
| 6,500 ft | 220° at 16 kt | +14 kt | 9 °C | 106 kt | 7 h 50 min | 1:25 am PDT (08:25 UTC) |
| 8,500 ft | 220° at 17 kt | +16 kt | 4 °C | 104 kt | 7 h 59 min | 1:34 am PDT (08:34 UTC) |
| 10,500 ft | 220° at 21 kt | +19 kt | 1 °C | 101 kt | 8 h 14 min | 1:49 am PDT (08:49 UTC) |
| 12,500 ft | 220° at 25 kt | +23 kt | -3 °C | 97 kt | 8 h 34 min | 2:09 am PDT (09:09 UTC) |
| 14,500 ft | 220° at 30 kt | +29 kt | -6 °C | 91 kt | 9 h 08 min | 2:43 am PDT (09:43 UTC) |
| 16,500 ft | 210° at 35 kt | +34 kt | -9 °C | 86 kt | 9 h 40 min | 3:15 am PDT (10:15 UTC) |
| 18,000 ft FL180 | 210° at 39 kt | +39 kt | -12 °C | 81 kt | 10 h 16 min | 3:51 am PDT (10:51 UTC) |
| 24,000 ft FL240 | 210° at 51 kt | +51 kt | -22 °C | 69 kt | 12 h 03 min | 5:38 am PDT (12:38 UTC) |
| 30,000 ft FL300 | 210° at 62 kt | +61 kt | -30 °C | 59 kt | 14 h 05 min | 7:40 am PDT (14:40 UTC) |
| 34,000 ft FL340 | 220° at 68 kt | +65 kt | -36 °C | 55 kt | 15 h 07 min | 8:42 am PDT (15:42 UTC) |
| 39,000 ft FL390 | 220° at 66 kt | +60 kt | -44 °C | 60 kt | 13 h 51 min | 7:26 am PDT (14:26 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| DLN | used from 0 nm out; 51 nm from the line | 080/10 -3° | 180/8 -3° | 180/23 -14° | 200/58 -22° | 200/80 -36° | 220/85 -41° | 230/81 -45° | ||
| PIH | used from 99 nm out; 59 nm from the line | 270/10 | 270/13 1° | 210/16 -2° | 200/56 -11° | 200/51 -23° | 200/68 -33° | 220/77 -37° | 230/73 -44° | |
| SLC | used from 247 nm out; 78 nm from the line | 280/8 | 210/39 5° | 210/52 -1° | 200/50 -11° | 200/56 -23° | 220/61 -28° | 230/73 -37° | 230/73 -45° | |
| ELY | used from 346 nm out; 53 nm from the line | 210/20 4° | 240/21 -1° | 230/37 -13° | 200/58 -25° | 220/73 -27° | 220/73 -36° | 220/69 -44° | ||
| LAS | used from 495 nm out; 95 nm from the line | 200/25 11° | 230/22 5° | 240/25 -1° | 220/37 -12° | 220/44 -21° | 210/52 -27° | 210/60 -34° | 220/58 -44° | |
| ONT | used from 693 nm out; 62 nm from the line | 230/11 | 200/17 6° | 230/27 4° | 230/32 -2° | 210/39 -12° | 220/51 -20° | 220/48 -29° | 210/51 -34° | 210/52 -44° |
| SAN | used from 792 nm out; 20 nm from the line | 200/10 | 240/19 9° | 240/27 5° | 230/22 -1° | 220/40 -10° | 220/49 -19° | 220/54 -29° | 220/61 -35° | 220/56 -44° |
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 | low IFR Sky: scattered clouds at 200 feet, scattered clouds at 700 feet, overcast at 1,100 feet Weather: snow, fog | calm | 0.5 mi | 1,100 ft | 4,473 ft | 5:56 pm MDT (23:56 UTC) |
| EKS Ennis, MT | 40 nm out, 9 nm northwest of the line | IFR Sky: scattered clouds at 300 feet, scattered clouds at 700 feet, a broken layer at 2,100 feet Weather: light snow, mist | from the north (350°) at 11 knots | 1 mi | 2,100 ft | 5,432 ft | 00:15 UTC |
| IDA Idaho Falls, ID | 139 nm out, 13 nm southeast of the line, tower | marginal VFR Sky: a few clouds at 700 feet, a broken layer at 3,300 feet, overcast at 4,000 feet Weather: rain, mist | from the north-northwest (340°) at 13 knots | 5 mi | 3,300 ft | 4,743 ft | 00:27 UTC |
| PIH Pocatello, ID | 178 nm out, 6 nm south of the line, tower | IFR Sky: a broken layer at 700 feet, overcast at 1,300 feet Weather: light rain | from the southwest (230°) at 15 knots | 7 mi | 700 ft | 4,451 ft | 23:53 UTC |
| ENV Wendover, UT | 327 nm out, 11 nm west of the line | VFR | from the east-southeast (120°) at 3 knots | 10+ mi | none | 4,236 ft | 23:56 UTC |
| ELY Ely, NV | 426 nm out, 18 nm northwest of the line | VFR | from the south (190°) at 8 knots | 10+ mi | none | 6,259 ft | 23:53 UTC |
| DAG Daggett, CA | 703 nm out, 20 nm west of the line | VFR Sky: scattered clouds at 11,000 feet | from the southwest (220°) at 23 knots, gusting to 35 | 10+ mi | none | 1,930 ft | 23:50 UTC |
| RNM Ramona, CA | 812 nm out, 8 nm east of the line, tower | marginal VFR Sky: a broken layer at 1,600 feet, a broken layer at 2,600 feet, overcast at 4,300 feet Weather: mist | from the southwest (220°) at 10 knots | 7 mi | 1,600 ft | 1,394 ft | 23:53 UTC |
| SAN San Diego, CA | destination | VFR Sky: a few clouds at 3,000 feet, a broken layer at 3,700 feet, overcast at 4,700 feet | from the west-southwest (250°) at 6 knots | 10+ mi | 3,700 ft | 16 ft | 4:51 pm PDT (23:51 UTC) |
The highest airport on this list sits at 6,259 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SAN when you get there the forecast at the estimated arrival, 1:21 am PDT (08:21 UTC)
Wind from the southwest at 6 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 3,500 feet VFR
The whole forecast for SAN
- From Sun 5:00 pm PDT (00:00 UTC): wind from the southwest at 11 knots, visibility more than 6 miles, scattered clouds at 2,800 feet, a broken layer at 3,500 feet and more above
- From Sun 8:00 pm PDT (03:00 UTC): wind from the south-southwest at 7 knots, visibility more than 6 miles, a few clouds at 2,500 feet, a broken layer at 3,500 feet
- From Sun 11:00 pm PDT (06:00 UTC): wind from the southwest at 6 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 3,500 feet
- From Mon 12:00 pm PDT (19:00 UTC): wind from the west-southwest at 10 knots, gusting to 17, visibility more than 6 miles, a few clouds at 2,500 feet, a broken layer at 5,000 feet
- From Mon 5:00 pm PDT (00:00 UTC): wind from the west-southwest at 8 knots, visibility more than 6 miles, a broken layer at 5,000 feet
The forecast for BZN, the departure
- 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
Temporary flight restrictions on the line or within 25 nm of it
- 6/8890 LAS VEGAS, NV, Tuesday, October 13, 2026 Local 1 nm from the route, 604 nm along the route · a VIP movement · starts tomorrow · ZLA
Daylight
Sunset at BZN 6:44 pm MDT (00:44 UTC), at SAN 6:19 pm PDT (01:19 UTC) (civil twilight ends 6:44 pm PDT (01:44 UTC)). At 120 knots the arrival at SAN is before sunrise there (6:50 am PDT (13:50 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: Bozeman Yellowstone International, San Diego International.