Plan a flight · Tue 4:04 am MDT (10:04 UTC)

Boise Air Trml/Gowen Field to San Diego International BOI → SAN

652 nautical miles (750 statute miles) south on a straight line, true course 184°, about 171° magnetic at the departure end (variation 13E). At 120 knots that is 4 h 17 min at the quickest height in today's winds (30,000 ft, a 32-knot tailwind), arriving about 7:21 am PDT (14:21 UTC). Right now BOI is VFR, wind from the west-northwest (290°) at 9 knots; SAN is VFR, wind from the north (350°) at 5 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: 2,235 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 TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the whole route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 30 to 316 nm out.
AIRMET ZULU 1C: moderate icing up to 22,000 ft. Over the route from 59 to 207 nm out.
AIRMET SIERRA 11E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 109 to 217 nm out.
AIRMET ZULU 1C: moderate icing from 7,000 ft to 16,000 ft. Over the route from 267 to 395 nm out.
AIRMET TANGO 1W: moderate turbulence below 18,000 ft from 14,000 ft to 18,000 ft. Over the route from 365 to 464 nm out.
AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 10,000 ft. Over the route from 474 to 612 nm out.

Turbulence AIRMET in force: moderate turbulence from 18,000 ft to 39,000 ft, over the whole route; AIRMET in force: moderate turbulence from 14,000 ft to 18,000 ft, over the route from 365 to 464 nm out. 1 pilot report of turbulence near the line in the last three hours: moderate turbulence, at 35,000 ft, 21 nm west, 2:00 am MDT (08:00 UTC). The government's turbulence forecast map ↗

Icing AIRMET in force: moderate icing up to 22,000 ft, over the route from 59 to 207 nm out; AIRMET in force: moderate icing from 7,000 ft to 16,000 ft, over the route from 267 to 395 nm out. No pilot has reported icing near the line in the last three hours. The freezing level is about 8,000 ft (from the winds-aloft temperatures), so icing is possible in cloud above that. The government's icing forecast map ↗

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 BOI.

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

UAL1947 at 35,000 ft, 21 nm west, 2:00 am MDT (08:00 UTC): moderate turbulence, wind 283° at 44 knots. 375 nm along the route, 21 nm west of the line.
as filed, and in English
```
ARP UAL1947 3722N 11715W 0800 F350 283/044KT TB MODERATE SK IC
```
Report
a routine report filed through ARP

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 7 forecast points nearest it (BOI, BAM, ELY, BIH, WJF, 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
5,500 ft	330° at 12 kt	−9 kt	6 °C	129 kt	5 h 03 min	8:07 am PDT (15:07 UTC)
7,500 ft	340° at 16 kt	−15 kt	1 °C	135 kt	4 h 50 min	7:54 am PDT (14:54 UTC)
9,500 ft	340° at 19 kt	−17 kt	-2 °C	137 kt	4 h 46 min	7:50 am PDT (14:50 UTC)
11,500 ft	320° at 17 kt	−13 kt	-4 °C	133 kt	4 h 54 min	7:58 am PDT (14:58 UTC)
13,500 ft	320° at 19 kt	−14 kt	-8 °C	134 kt	4 h 52 min	7:56 am PDT (14:56 UTC)
15,500 ft	320° at 21 kt	−16 kt	-12 °C	136 kt	4 h 48 min	7:52 am PDT (14:52 UTC)
17,500 ft	320° at 23 kt	−18 kt	-16 °C	138 kt	4 h 43 min	7:47 am PDT (14:47 UTC)
18,000 ft FL180	320° at 24 kt	−18 kt	-17 °C	138 kt	4 h 43 min	7:47 am PDT (14:47 UTC)
24,000 ft FL240	330° at 30 kt	−25 kt	-27 °C	145 kt	4 h 30 min	7:34 am PDT (14:34 UTC)
30,000 ft FL300	330° at 39 kt	−32 kt	-37 °C	152 kt	4 h 17 min	7:21 am PDT (14:21 UTC)
34,000 ft FL340	330° at 35 kt	−28 kt	-43 °C	148 kt	4 h 24 min	7:28 am PDT (14:28 UTC)
39,000 ft FL390	290° at 25 kt	−5 kt	-47 °C	125 kt	5 h 13 min	8:17 am PDT (15:17 UTC)

Based on data from the 13th at 06:00 UTC; valid on the 13th 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
BOI	used from 0 nm out; 25 nm from the line		340/20 4°	360/20 -2°	020/10 -7°	040/23 -19°	040/26 -34°	040/32 -40°	030/32 -43°	360/10 -44°
BAM	used from 99 nm out; 58 nm from the line			010/19 -6°	050/10 -11°	080/20 -25°	080/31 -34°	010/28 -33°	360/27 -37°	340/15 -42°
ELY	used from 247 nm out; 86 nm from the line			340/15 -5°	L/V -10°	210/18 -23°	220/28 -38°	230/29 -33°	260/22 -36°	240/19 -41°
BIH	used from 296 nm out; 93 nm from the line		L/V	330/20 -6°	310/25 -9°	320/69 -14°	320/92 -21°	320/87 -39°	320/75 -46°	290/33 -47°
WJF	used from 444 nm out; 88 nm from the line		330/25 7°	330/25 5°	310/40 3°	300/43 -11°	300/47 -21°	310/48 -39°	310/44 -48°	280/46 -54°
ONT	used from 543 nm out; 26 nm from the line	270/6	300/14 5°	320/26 7°	300/35 4°	290/33 -11°	300/41 -21°	320/46 -39°	310/37 -47°	270/45 -52°
SAN	used from 593 nm out; 35 nm from the line	300/6	290/7 3°	320/20 11°	310/22 5°	290/25 -10°	320/31 -21°	340/32 -38°	280/23 -46°	260/42 -51°

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
BOI Boise, ID	departure	VFR	from the west-northwest (290°) at 9 knots	10+ mi	none	2,871 ft	3:53 am MDT (09:53 UTC)
BAM Battle Mountain, NV	178 nm out, 16 nm west of the line	marginal VFR Sky: scattered clouds at 300 feet, a broken layer at 1,600 feet, overcast at 2,900 feet	from the east (100°) at 4 knots	10+ mi	1,600 ft	4,536 ft	09:55 UTC
TPH Tonopah, NV	336 nm out, 16 nm west of the line	VFR Sky: overcast at 10,000 feet	from the northwest (320°) at 14 knots	10+ mi	10,000 ft	5,430 ft	09:56 UTC
BTY Beatty, NV	405 nm out, 4 nm northeast of the line	no report just now				3,169 ft
RIV Riverside, CA	583 nm out, 8 nm west of the line, tower	VFR Sky: overcast at 6,000 feet	calm	10+ mi	6,000 ft	1,536 ft	09:55 UTC
CRQ Carlsbad, CA	632 nm out, 7 nm northwest of the line, tower	VFR Sky: overcast at 4,100 feet	variable at 4 knots	10+ mi	4,100 ft	330 ft	09:53 UTC
SAN San Diego, CA	destination	VFR Sky: a few clouds at 4,000 feet, a broken layer at 5,500 feet	from the north (350°) at 5 knots	10+ mi	5,500 ft	16 ft	2:51 am PDT (09:51 UTC)

The highest airport on this list sits at 5,430 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

The codes as issued, and in English, for every airport in the table

BOI Boise, ID