San Francisco International to Boise Air Trml/Gowen Field SFO → BOI
454 nautical miles (522 statute miles) northeast on a straight line, true course 036°, about 022° magnetic at the departure end (variation 14E). At 120 knots that is 2 h 38 min at the quickest height in today's winds (34,000 ft, a 52-knot tailwind), arriving about 9:13 pm MDT (03:13 UTC), after sunset at the destination. Right now SFO is VFR, wind from the west-southwest (250°) at 12 knots; BOI is VFR, wind calm. 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: 3,646 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
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the last 178 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 39 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 SFO.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- PC24 at 40,000 ft, 4 nm west, 4:10 pm PDT (23:10 UTC): light to moderate turbulence. 306 nm along the route, 4 nm west of the line.
as filed, and in English
LOL UA /OV SDO291023/TM 2310/FL400/TP PC24/TB LGT OCNL MOD /ZLC
- Report
- a routine report filed through LOL
- Where
- 23 nm west (291°) of SDO
- Time
- 23:10 UTC
- Height
- at 40,000 ft
- Aircraft
- PC24
- Turbulence
- light occasional moderate zlc
- TBM8 at 19,000 ft, 6 nm north, 2:58 pm PDT (21:58 UTC): light rime icing from 10,000 ft to 18,000 ft, -20 °C. 395 nm along the route, 6 nm north of the line.
as filed, and in English
BOI UA /OV BOI209055/TM 2158/FL190/TP TBM8/TA M20/IC LGT RIME 180-100 /ZLC
- Report
- a routine report filed through BOI
- Where
- 55 nm southwest (209°) of BOI
- Time
- 21:58 UTC
- Height
- at 19,000 ft
- Aircraft
- TBM8
- Temperature
- −20 °C
- Icing
- light rime from 18,000 ft to 10,000 ft zlc
- CL60 descending, 2 nm southeast, 4:00 pm PDT (23:00 UTC): remarks: + 10 knots on final. At the destination end, 2 nm southeast of the line.
as filed, and in English
BOI UA /OV BOI/TM 2300/FLDURD/TP CL60/RM +/- 10 KTS ON FINAL
- Report
- a routine report filed through BOI
- Where
- over BOI
- Time
- 23:00 UTC
- Height
- during the descent
- Aircraft
- CL60
- Remarks
- + 10 knots on final
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 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 6 forecast points nearest it (SFO, SAC, RNO, LKV, BAM, BOI). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 5,500 ft | 320° at 7 kt | +2 kt | 4 °C | 118 kt | 3 h 51 min | 10:26 pm MDT (04:26 UTC) |
| 7,500 ft | 310° at 6 kt | 0 | 1 °C | 120 kt | 3 h 47 min | 10:22 pm MDT (04:22 UTC) |
| 9,500 ft | 260° at 8 kt | −6 kt | -1 °C | 126 kt | 3 h 36 min | 10:11 pm MDT (04:11 UTC) |
| 11,500 ft | 240° at 15 kt | −15 kt | -5 °C | 135 kt | 3 h 22 min | 9:57 pm MDT (03:57 UTC) |
| 13,500 ft | 230° at 20 kt | −20 kt | -10 °C | 140 kt | 3 h 15 min | 9:50 pm MDT (03:50 UTC) |
| 15,500 ft | 230° at 24 kt | −24 kt | -13 °C | 144 kt | 3 h 09 min | 9:44 pm MDT (03:44 UTC) |
| 17,500 ft | 220° at 28 kt | −28 kt | -17 °C | 148 kt | 3 h 04 min | 9:39 pm MDT (03:39 UTC) |
| 18,000 ft FL180 | 220° at 30 kt | −29 kt | -18 °C | 149 kt | 3 h 03 min | 9:38 pm MDT (03:38 UTC) |
| 24,000 ft FL240 | 220° at 35 kt | −35 kt | -26 °C | 155 kt | 2 h 56 min | 9:31 pm MDT (03:31 UTC) |
| 30,000 ft FL300 | 230° at 46 kt | −45 kt | -30 °C | 165 kt | 2 h 45 min | 9:20 pm MDT (03:20 UTC) |
| 34,000 ft FL340 | 230° at 52 kt | −52 kt | -33 °C | 172 kt | 2 h 38 min | 9:13 pm MDT (03:13 UTC) |
| 39,000 ft FL390 | 230° at 49 kt | −48 kt | -41 °C | 168 kt | 2 h 42 min | 9:17 pm MDT (03:17 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| SFO | used from 0 nm out; 25 nm from the line | 220/11 | L/V 5° | 280/7 1° | 270/15 -3° | 290/23 -14° | 310/29 -24° | 280/26 -28° | 250/30 -34° | 250/36 -43° |
| SAC | used from 49 nm out; 6 nm from the line | 270/5 | L/V 5° | L/V -1° | 240/11 -5° | 250/22 -15° | 270/25 -24° | 260/31 -27° | 240/39 -33° | 240/39 -42° |
| RNO | used from 99 nm out; 50 nm from the line | 320/7 | 260/13 1° | 230/21 -7° | 210/38 -17° | 220/43 -26° | 230/54 -29° | 230/59 -32° | 230/54 -41° | |
| LKV | used from 247 nm out; 91 nm from the line | 010/18 -6° | 280/7 -11° | 290/9 -22° | 280/13 -27° | 290/20 -31° | 260/19 -34° | 260/27 -39° | ||
| BAM | used from 296 nm out; 95 nm from the line | 270/8 4° | 230/27 -4° | 220/49 -18° | 210/52 -26° | 220/77 -29° | 220/71 -33° | 220/63 -43° | ||
| BOI | used from 345 nm out; 84 nm from the line | 330/14 4° | 230/5 -2° | 220/20 -7° | 210/37 -20° | 200/59 -26° | 200/67 -34° | 210/73 -35° | 220/62 -41° |
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 |
|---|---|---|---|---|---|---|---|
| SFO San Francisco, CA | departure | VFR Sky: a few clouds at 2,000 feet | from the west-southwest (250°) at 12 knots | 10+ mi | none | 13 ft | 4:56 pm PDT (23:56 UTC) |
| CCR Concord, CA | 30 nm out, 3 nm southwest of the line, tower | VFR | from the south-southwest (210°) at 17 knots | 10+ mi | none | 25 ft | 23:53 UTC |
| SAC Sacramento, CA | 69 nm out, 2 nm south of the line, tower | VFR | variable at 4 knots | 10+ mi | none | 23 ft | 23:53 UTC |
| AUN Auburn, CA | 99 nm out, 2 nm northeast of the line | VFR | from the south (190°) at 6 knots | 10+ mi | none | 1,538 ft | 00:15 UTC |
| TRK Truckee, CA | 148 nm out, 23 nm southeast of the line, tower | VFR Sky: scattered clouds at 5,500 feet, scattered clouds at 7,000 feet | from the south-southwest (200°) at 9 knots, gusting to 21 | 10+ mi | none | 5,904 ft | 23:50 UTC |
| REO Rome, OR | 365 nm out, 19 nm northwest of the line | reported, no category | variable at 5 knots | none | 4,053 ft | 23:52 UTC | |
| BOI Boise, ID | destination | VFR Sky: overcast at 4,200 feet Weather: light rain | calm | 10+ mi | 4,200 ft | 2,871 ft | 5:53 pm MDT (23:53 UTC) |
The highest airport on this list sits at 5,904 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At BOI when you get there the forecast at the estimated arrival, 9:13 pm MDT (03:13 UTC)
Wind from the northwest at 11 knots, visibility more than 6 miles, showers nearby, scattered clouds at 5,000 feet, overcast at 7,000 feet VFR
At times between Sun 6:00 pm MDT (00:00 UTC) and 10:00 pm MDT (04:00 UTC): light rain showers, overcast at 5,000 feet VFR
The whole forecast for BOI
- From Sun 6:00 pm MDT (00:00 UTC): wind from the northwest at 11 knots, visibility more than 6 miles, showers nearby, scattered clouds at 5,000 feet, overcast at 7,000 feet
- At times between Sun 6:00 pm MDT (00:00 UTC) and 10:00 pm MDT (04:00 UTC): light rain showers, overcast at 5,000 feet
- From Mon 12:00 am MDT (06:00 UTC): wind from the west-northwest at 5 knots, visibility more than 6 miles, a few clouds at 5,000 feet, a broken layer at 8,000 feet
- From Mon 12:00 pm MDT (18:00 UTC): wind from the northwest at 10 knots, visibility more than 6 miles, a broken layer at 10,000 feet
The forecast for SFO, the departure
- From Sun 5:00 pm PDT (00:00 UTC): wind from the west-southwest at 16 knots, visibility more than 6 miles, a few clouds at 2,000 feet
- From Sun 7:00 pm PDT (02:00 UTC): wind from the west-southwest at 8 knots, visibility more than 6 miles, a few clouds at 2,000 feet
- From Mon 1:00 am PDT (08:00 UTC): wind from the south-southeast at 4 knots, visibility more than 6 miles, clear skies
- From Mon 11:00 am PDT (18:00 UTC): wind from the east-northeast at 5 knots, visibility more than 6 miles, clear skies
- From Mon 3:00 pm PDT (22:00 UTC): wind from the west at 10 knots, visibility more than 6 miles, clear skies
Temporary flight restrictions on the line or within 25 nm of it
- 6/7231 Santa Clara, CA, Sunday, October 11, 2026 through Monday, October 12, 2026 UTC 22 nm from the route, at the departure end · drones kept away from a public gathering · until 12 October · ZOA
- 6/7455 SAN FRANCISCO, CA, Thursday, October 8, 2026 through Sunday, October 11, 2026 Local 6 nm from the route, at the departure end · security · ended 11 October · ZOA
- 6/6740 SACRAMENTO, CA, Thursday, October 8, 2026 through Sunday, October 11, 2026 Local 1 nm from the route, 79 nm along the route · air shows/sports · ended 11 October · ZOA
- 6/3475 BEALE AFB, CA, Sunday, March 8, 2026 through Sunday, November 1, 2026 Local 9 nm from the route, 99 nm along the route · security · until 1 November · ZOA
Daylight
Sunset at SFO 6:36 pm PDT (01:36 UTC), at BOI 7:06 pm MDT (01:06 UTC) (civil twilight ends 7:35 pm MDT (01:35 UTC)). At 120 knots the arrival at BOI is after sunset there (7:08 pm MDT (01:08 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: San Francisco International, Boise Air Trml/Gowen Field.