Plan a flight · Mon 1:05 am PDT (08:05 UTC)

Palm Springs International to Great Falls International PSP → GTF

852 nautical miles (980 statute miles) north on a straight line, true course 014°, about 001° magnetic at the departure end (variation 13E). At 120 knots that is 4 h 39 min at the quickest height in today's winds (34,000 ft, a 63-knot tailwind), arriving about 6:44 am MDT (12:44 UTC), after sunset at the destination. Right now PSP is VFR, wind from the west-northwest (290°) at 4 knots; GTF is IFR, wind from the north-northwest (340°) at 8 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: 1 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 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft. Over the first 79 nm of the route.
AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Over the first 178 nm of the route.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 129 to 634 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 188 to 406 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 535 nm of the route.
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 258 nm of the route.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the route from 644 to 654 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 99 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 PSP.

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

B737 at 14,500 ft, 35 nm east, 10:30 pm PDT (05:30 UTC): light turbulence. 139 nm along the route, 35 nm east of the line.
as filed, and in English
```
LAS UA /OV LAS155012/TM 0530/FL145/TP B737/TB LGT
```
Report
a routine report filed through LAS
Where
12 nm southeast (155°) of LAS
Time
05:30 UTC
Height
at 14,500 ft
Aircraft
B737
Turbulence
light
B737 at 19,000 ft, 39 nm east, 10:45 pm PDT (05:45 UTC): light turbulence. 159 nm along the route, 39 nm east of the line.
as filed, and in English
```
LAS UA /OV LAS050012/TM 0545/FL190/TP B737/TB LGT
```
Report
a routine report filed through LAS
Where
12 nm northeast (050°) of LAS
Time
05:45 UTC
Height
at 19,000 ft
Aircraft
B737
Turbulence
light
E73L descending, 40 nm east, 11:20 pm PDT (06:20 UTC): remarks: breaking action good broke out about 600FT above ground. 753 nm along the route, 40 nm east of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 0620/FLDURD/TP E73L/RM BREAKING ACTION GOOD. BROKE OUT ABOUT 600FT AGL
```
Report
a routine report filed through BZN
Where
over BZN
Time
06:20 UTC
Height
during the descent
Aircraft
E73L
Remarks
breaking action good broke out about 600FT above ground
B737 , 40 nm east, 10:31 pm PDT (05:31 UTC): remarks: saw the light at 500FT braking good no icing. 753 nm along the route, 40 nm east of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 0531/FLBURD/TP B737/RM SAW THE LIGHT AT 500FT. BRAKING GOOD. NEG ICING
```
Report
a routine report filed through BZN
Where
over BZN
Time
05:31 UTC
Height
at BURD
Aircraft
B737
Remarks
saw the light at 500FT braking good no icing

Winds aloft along the route, and the time en route the forecast for use 02:00–09:00 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 (ONT, LAS, ELY, SLC, PIH, DLN, GTF). 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	200° at 9 kt	−9 kt	10 °C	129 kt	6 h 36 min	8:41 am MDT (14:41 UTC)
7,500 ft	200° at 15 kt	−15 kt	3 °C	135 kt	6 h 19 min	8:24 am MDT (14:24 UTC)
9,500 ft	200° at 16 kt	−16 kt	0 °C	136 kt	6 h 16 min	8:21 am MDT (14:21 UTC)
11,500 ft	210° at 19 kt	−18 kt	-2 °C	138 kt	6 h 10 min	8:15 am MDT (14:15 UTC)
13,500 ft	210° at 25 kt	−24 kt	-6 °C	144 kt	5 h 55 min	8:00 am MDT (14:00 UTC)
15,500 ft	210° at 33 kt	−32 kt	-10 °C	152 kt	5 h 36 min	7:41 am MDT (13:41 UTC)
17,500 ft	210° at 40 kt	−39 kt	-14 °C	159 kt	5 h 22 min	7:27 am MDT (13:27 UTC)
18,000 ft FL180	210° at 42 kt	−41 kt	-15 °C	161 kt	5 h 18 min	7:23 am MDT (13:23 UTC)
24,000 ft FL240	210° at 58 kt	−57 kt	-23 °C	177 kt	4 h 49 min	6:54 am MDT (12:54 UTC)
30,000 ft FL300	210° at 62 kt	−58 kt	-31 °C	178 kt	4 h 47 min	6:52 am MDT (12:52 UTC)
34,000 ft FL340	220° at 67 kt	−63 kt	-35 °C	183 kt	4 h 39 min	6:44 am MDT (12:44 UTC)
39,000 ft FL390	220° at 64 kt	−59 kt	-43 °C	179 kt	4 h 46 min	6:51 am MDT (12:51 UTC)

Based on data from the 12th at 00:00 UTC; valid on the 12th at 06:00 UTC for use 02:00 to 09:00 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
ONT	used from 0 nm out; 61 nm from the line	190/8	190/19 6°	210/23 4°	210/29 -3°	210/47 -13°	210/49 -19°	220/47 -30°	220/50 -36°	220/55 -43°
LAS	used from 50 nm out; 79 nm from the line		210/21 10°	200/18 5°	200/23 -2°	210/49 -14°	210/63 -21°	220/58 -30°	220/61 -35°	210/56 -44°
ELY	used from 248 nm out; 66 nm from the line			200/39 3°	210/27 -2°	210/45 -15°	220/56 -24°	210/60 -28°	210/63 -34°	220/61 -43°
SLC	used from 446 nm out; 96 nm from the line		200/5	230/8 2°	220/20 -2°	210/40 -12°	190/53 -25°	210/62 -30°	220/69 -34°	220/64 -43°
PIH	used from 495 nm out; 63 nm from the line		L/V	240/13 1°	240/15 -3°	210/42 -15°	200/70 -25°	220/74 -29°	220/71 -36°	220/62 -43°
DLN	used from 644 nm out; 42 nm from the line			090/6 -6°	240/22 -4°	210/34 -16°	210/62 -25°	210/66 -34°	210/82 -36°	220/77 -42°
GTF	used from 793 nm out; 35 nm from the line		070/11	080/15 -7°	110/19 -9°	190/25 -14°	200/34 -23°	200/54 -39°	220/66 -40°	220/77 -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
PSP Palm Springs, CA	departure	VFR Sky: a few clouds at 5,000 feet, scattered clouds at 8,000 feet	from the west-northwest (290°) at 4 knots	10+ mi	none	476 ft	12:53 am PDT (07:53 UTC)
TNP Twentynine Palms, CA	20 nm out, 23 nm east of the line	no report just now				1,888 ft
ELY Ely, NV	337 nm out, 6 nm northwest of the line	VFR Sky: scattered clouds at 4,800 feet, a broken layer at 6,000 feet, overcast at 9,000 feet Weather: rain	from the south (190°) at 10 knots, gusting to 22	8 mi	6,000 ft	6,259 ft	07:53 UTC
ENV Wendover, UT	426 nm out, 8 nm east of the line	marginal VFR Sky: overcast at 1,600 feet	from the east-northeast (060°) at 3 knots	10+ mi	1,600 ft	4,236 ft	07:56 UTC
BYI Burley, ID	535 nm out, 12 nm northwest of the line	VFR Sky: overcast at 4,200 feet Weather: light rain	from the west-northwest (290°) at 8 knots	8 mi	4,200 ft	4,153 ft	07:53 UTC
AOC Arco, ID	604 nm out, 11 nm west of the line	no report just now				5,334 ft
RVF Twin Bridges, MT	733 nm out, 5 nm southwest of the line	marginal VFR Sky: overcast at 2,700 feet	from the north-northeast (030°) at 20 knots	8 mi	2,700 ft	4,788 ft	07:55 UTC
HLN Helena, MT	793 nm out, 8 nm northwest of the line, tower	marginal VFR Sky: a few clouds at 1,900 feet, overcast at 4,800 feet Weather: light snow, mist	from the west (270°) at 9 knots	4 mi	4,800 ft	3,877 ft	07:53 UTC
GTF Great Falls, MT	destination	IFR Sky: overcast at 1,300 feet Weather: light snow, mist	from the north-northwest (340°) at 8 knots	1.5 mi	1,300 ft	3,680 ft	1:53 am MDT (07:53 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 GTF when you get there the forecast at the estimated arrival, 6:44 am MDT (12:44 UTC)

Wind from the north at 9 knots, visibility more than 6 miles, overcast at 600 feet IFR

The whole forecast for GTF

From Mon 12:00 am MDT (06:00 UTC): wind from the north-northeast at 12 knots, visibility 3 miles, light snow, overcast at 600 feet
At times between Mon 12:00 am MDT (06:00 UTC) and 3:00 am MDT (09:00 UTC): visibility 2 miles, light snow
From Mon 3:00 am MDT (09:00 UTC): wind from the north at 9 knots, visibility more than 6 miles, overcast at 600 feet
At times between Mon 3:00 am MDT (09:00 UTC) and 5:00 am MDT (11:00 UTC): visibility 2 miles, light snow, overcast at 300 feet
From Mon 12:00 pm MDT (18:00 UTC): wind light and variable, visibility more than 6 miles, overcast at 1,000 feet
From Mon 9:00 pm MDT (03:00 UTC): wind light and variable, visibility 6 miles, mist, scattered clouds at 1,000 feet

The forecast for PSP, the departure

From Sun 11:00 pm PDT (06:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 10,000 feet
From Mon 2:00 pm PDT (21:00 UTC): wind from the northwest at 11 knots, gusting to 18, visibility more than 6 miles, a few clouds at 10,000 feet

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

6/8887 Indio, CA, Sunday, October 11, 2026 through Monday, October 12, 2026 Local 15 nm from the route, at the departure end · security · until 12 October · ZLA
6/8890 LAS VEGAS, NV, Tuesday, October 13, 2026 Local on the route, 149 nm along the route · a VIP movement · starts tomorrow · ZLA

Daylight

Sunset at PSP 6:14 pm PDT (01:14 UTC), at GTF 6:41 pm MDT (00:41 UTC) (civil twilight ends 7:12 pm MDT (01:12 UTC)). At 120 knots the arrival at GTF is before sunrise there (7:39 am MDT (13:39 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 Pacific Southwest · loop National Weather Service

Radar now, the southern Rockies · loop National Weather Service

Radar now, the Pacific Northwest · 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: Palm Springs International, Great Falls International.