Plan a flight · Sun 11:58 pm MDT (05:58 UTC)

Northern Colorado Regional to San Diego International FNL → SAN

747 nautical miles (859 statute miles) southwest on a straight line, true course 235°, about 226° magnetic at the departure end (variation 9E). At 120 knots that is 7 h 57 min at the quickest height in today's winds (8,500 ft, a 26-knot headwind), arriving about 6:55 am PDT (13:55 UTC). Right now FNL is VFR, wind from the south-southeast (150°) at 3 knots; SAN is marginal 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: 4 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 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the first 368 nm of the route.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 518 nm of the route.
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). Over the route from 20 to 189 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 139 to 548 nm out.
AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft. Over the last 368 nm of the route.
AIRMET SIERRA 2E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 398 to 458 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Near the route, 448 nm along the route.
AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Over the route from 627 to 627 nm out.

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 FNL.

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

urgent E75L at 9,000 ft, 12 nm south, 10:30 pm MDT (04:30 UTC): remarks: low-level wind shear + 20K 1000-1500 above ground on approach. 110 nm along the route, 12 nm south of the line.
as filed, and in English
```
ASE UUA /OV ASE/TM 0430/FL090/TP E75L/RM LLWS +/- 20K 1000-1500 AGL ON APCH
```
Report
an urgent report filed through ASE
Where
over ASE
Time
04:30 UTC
Height
at 9,000 ft
Aircraft
E75L
Remarks
low-level wind shear + 20K 1000-1500 above ground on approach
E75L climbing, 36 nm northwest, 9:22 pm MDT (03:22 UTC): moderate chop turbulence. 667 nm along the route, 36 nm northwest of the line.
as filed, and in English
```
PSP UA /OV PSP345013/TM 0322/FLDURC/TP E75L/TB MOD CHOP/LT TURBU SFC-60
```
Report
a routine report filed through PSP
Where
13 nm north (345°) of PSP
Time
03:22 UTC
Height
during the climb
Aircraft
E75L
Turbulence
moderate chop/lt turbu SFC-60
A320 descending, 41 nm southeast, 9:19 pm MDT (03:19 UTC): no turbulence up to 10,000 ft. At the departure end, 41 nm southeast of the line.
as filed, and in English
```
DEN UA /OV DEN/TM 0319/FLDURD/TP A320/TB NEG BLO 100
```
Report
a routine report filed through DEN
Where
over DEN
Time
03:19 UTC
Height
during the descent
Aircraft
A320
Turbulence
no below 10,000 ft
B38M at 21,500 ft, 23 nm northwest, 10:33 pm MDT (04:33 UTC): light turbulence up to 25,000 ft, remarks: during the descent flati star ZDVWC-13. At the departure end, 23 nm northwest of the line.
as filed, and in English
```
DEN UA /OV DEN305065/TM 0433/FL215/TP B38M/TB LGT BLO 250/RM DURD FLATI STAR. ZDVWC-13
```
Report
a routine report filed through DEN
Where
65 nm northwest (305°) of DEN
Time
04:33 UTC
Height
at 21,500 ft
Aircraft
B38M
Turbulence
light below 25,000 ft
Remarks
during the descent flati star ZDVWC-13
BE20 at 16,000 ft, 27 nm northwest, 9:28 pm MDT (03:28 UTC): light chop turbulence, light rime icing, -3 °C, remarks: ZDVWC-11. 129 nm along the route, 27 nm northwest of the line.
as filed, and in English
```
RIL UA /OV RIL/TM 0328/FL160/TP BE20/TA M03/TB LGT CHOP/IC LGT RIME/RM ZDVWC-11
```
Report
a routine report filed through RIL
Where
over RIL
Time
03:28 UTC
Height
at 16,000 ft
Aircraft
BE20
Temperature
−3 °C
Turbulence
light chop
Icing
light rime
Remarks
ZDVWC-11
B733 at 20,000 ft, 44 nm southeast, 9:16 pm MDT (03:16 UTC): light chop turbulence up to 20,000 ft, clear from 20,000 ft to 60,000 ft, remarks: during the climb ZDVWC-12. 149 nm along the route, 44 nm southeast of the line.
as filed, and in English
```
GUC UA /OV HBU/TM 0316/FL200/TP B733/SK SKC/TB OCNL LGT CHOP BLO 200/RM DURC ZDVWC-12
```
Report
a routine report filed through GUC
Where
over HBU
Time
03:16 UTC
Height
at 20,000 ft
Aircraft
B733
Sky
clear
Turbulence
occasional light chop below 20,000 ft
Remarks
during the climb ZDVWC-12
UAL2479 at 36,000 ft, 14 nm northwest, 9:11 pm MDT (03:11 UTC): no turbulence, wind 231° at 49 knots. 149 nm along the route, 14 nm northwest of the line.
as filed, and in English
```
ARP UAL2479 3910N 10753W 0311 F360 231/049KT TB SMTH IC
```
Report
a routine report filed through ARP
B737 at 2,500 ft, 0 nm northwest, 11:07 pm MDT (05:07 UTC): a broken layer from 3,000 ft to 5,000 ft, remarks: during the descent runway 27. At the destination end, 0 nm northwest of the line.
as filed, and in English
```
SAN UA /OV SAN/TM 0507/FL025/TP B737/SK BKN030-TOP050/RM DURD RY27
```
Report
a routine report filed through SAN
Where
over SAN
Time
05:07 UTC
Height
at 2,500 ft
Aircraft
B737
Sky
a broken layer from 3,000 ft, tops 5,000 ft
Remarks
during the descent runway 27
B38M at 3,100 ft, 0 nm northwest, 10:11 pm MDT (04:11 UTC): a broken layer above 3,100 ft, remarks: during the descent runway 27. At the destination end, 0 nm northwest of the line.
as filed, and in English
```
SAN UA /OV SAN/TM 0411/FL031/TP B38M/SK BKN031/RM DURD RY27
```
Report
a routine report filed through SAN
Where
over SAN
Time
04:11 UTC
Height
at 3,100 ft
Aircraft
B38M
Sky
a broken layer from 3,100 ft
Remarks
during the descent runway 27
B737 at 3,100 ft, 0 nm northwest, 9:05 pm MDT (03:05 UTC): remarks: during the descent bases 3,100 ft. At the destination end, 0 nm northwest of the line.
as filed, and in English
```
SAN UA /OV SAN/TM 0305/FL031/TP B737/RM DURD BASES 031
```
Report
a routine report filed through SAN
Where
over SAN
Time
03:05 UTC
Height
at 3,100 ft
Aircraft
B737
Remarks
during the descent bases 3,100 ft

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 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 (DEN, GJT, FMN, BCE, PRC, BLH, 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
8,500 ft	210° at 28 kt	+26 kt	8 °C	94 kt	7 h 57 min	6:55 am PDT (13:55 UTC)
10,500 ft	220° at 30 kt	+30 kt	3 °C	90 kt	8 h 18 min	7:16 am PDT (14:16 UTC)
12,500 ft	220° at 34 kt	+34 kt	0 °C	86 kt	8 h 41 min	7:39 am PDT (14:39 UTC)
14,500 ft	220° at 39 kt	+39 kt	-4 °C	81 kt	9 h 13 min	8:11 am PDT (15:11 UTC)
16,500 ft	220° at 45 kt	+44 kt	-8 °C	76 kt	9 h 50 min	8:48 am PDT (15:48 UTC)
18,000 ft FL180	220° at 49 kt	+47 kt	-11 °C	73 kt	10 h 14 min	9:12 am PDT (16:12 UTC)
24,000 ft FL240	220° at 58 kt	+57 kt	-21 °C	63 kt	11 h 51 min	10:49 am PDT (17:49 UTC)
30,000 ft FL300	220° at 68 kt	+67 kt	-29 °C	53 kt	14 h 06 min	1:04 pm PDT (20:04 UTC)
34,000 ft FL340	230° at 72 kt	+72 kt	-34 °C	48 kt	15 h 34 min	2:32 pm PDT (21:32 UTC)
39,000 ft FL390	220° at 62 kt	+62 kt	-45 °C	58 kt	12 h 53 min	11:51 am PDT (18:51 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
DEN	used from 0 nm out; 42 nm from the line			240/21 14°	250/44 6°	220/49 -8°	220/49 -21°	230/54 -30°	240/57 -35°	240/49 -45°
GJT	used from 100 nm out; 61 nm from the line			210/43 7°	230/45 1°	220/49 -12°	220/62 -22°	220/59 -28°	230/60 -33°	220/55 -45°
FMN	used from 249 nm out; 96 nm from the line			220/28 9°	220/40 2°	220/53 -10°	220/62 -22°	230/79 -28°	240/91 -34°	230/71 -45°
BCE	used from 299 nm out; 79 nm from the line				220/27 -1°	210/40 -13°	220/54 -21°	220/64 -30°	220/64 -34°	220/52 -44°
PRC	used from 448 nm out; 69 nm from the line			210/25 5°	200/30 1°	220/55 -10°	220/61 -21°	220/84 -28°	230/90 -34°	230/73 -45°
BLH	used from 548 nm out; 62 nm from the line	210/13	200/21 11°	200/22 5°	210/25 -1°	210/51 -10°	220/61 -20°	220/81 -29°	220/92 -34°	220/79 -45°
SAN	used from 697 nm out; 25 nm from the line	200/11	200/23 7°	210/27 4°	210/31 -3°	220/56 -10°	220/56 -19°	220/52 -30°	220/64 -37°	220/67 -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
FNL Fort Collins/Loveland, CO	departure	VFR	from the south-southeast (150°) at 3 knots	10+ mi	none	5,020 ft	11:56 pm MDT (05:56 UTC)
BJC Denver, CO	20 nm out, 24 nm southeast of the line, tower	VFR	from the southwest (220°) at 3 knots	10+ mi	none	5,673 ft	05:35 UTC
EGE Eagle, CO	100 nm out, 11 nm northwest of the line, tower	VFR Sky: a few clouds at 6,000 feet, a broken layer at 9,000 feet, overcast at 11,000 feet	from the west (280°) at 10 knots, gusting to 15	10+ mi	9,000 ft	6,547 ft	04:56 UTC
AJZ Delta, CO	169 nm out, 4 nm southwest of the line	reported, no category	from the east-southeast (110°) at 3 knots		none	5,193 ft	05:35 UTC
BDG Blanding, UT	269 nm out, 17 nm southeast of the line	VFR Sky: a few clouds at 3,200 feet, scattered clouds at 4,000 feet, a broken layer at 4,800 feet, overcast at 6,000 feet	from the south-southeast (160°) at 11 knots, gusting to 19	10+ mi	4,800 ft	5,867 ft	05:55 UTC
PGA Page, AZ	368 nm out, 10 nm northwest of the line	VFR	from the southwest (230°) at 3 knots	10+ mi	none	4,316 ft	05:53 UTC
GCN Grand Canyon, AZ	428 nm out, 15 nm southeast of the line, tower	IFR Sky: a broken layer at 600 feet, overcast at 3,500 feet	from the south-southwest (200°) at 9 knots	10+ mi	600 ft	6,608 ft	05:54 UTC
IFP Bullhead City, AZ	548 nm out, 24 nm northwest of the line, tower	VFR	from the southwest (220°) at 6 knots	10+ mi	none	707 ft	05:35 UTC
UDD Palm Springs, CA	667 nm out, 16 nm northwest of the line	no report just now				73 ft
RNM Ramona, CA	727 nm out, 5 nm north of the line, tower	marginal VFR Sky: a broken layer at 1,300 feet, a broken layer at 2,000 feet, overcast at 2,500 feet Weather: mist	calm	4 mi	1,300 ft	1,394 ft	05:53 UTC
SAN San Diego, CA	destination	marginal VFR Sky: a few clouds at 1,800 feet, scattered clouds at 3,200 feet, a broken layer at 4,200 feet Weather: mist	calm	5 mi	4,200 ft	16 ft	10:51 pm PDT (05:51 UTC)

The highest airport on this list sits at 6,608 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, 6:55 am PDT (13:55 UTC)

Wind from the west-southwest at 7 knots, visibility more than 6 miles, showers nearby, scattered clouds at 3,000 feet, a broken layer at 4,000 feet VFR

The whole forecast for SAN

From Sun 11:00 pm PDT (06:00 UTC): wind from the southwest at 6 knots, visibility more than 6 miles, showers nearby, a broken layer at 2,500 feet, a broken layer at 3,500 feet
From Mon 5:00 am PDT (12:00 UTC): wind from the west-southwest at 7 knots, visibility more than 6 miles, showers nearby, scattered clouds at 3,000 feet, a broken layer at 4,000 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
From Mon 8:00 pm PDT (03:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 3,000 feet, a broken layer at 5,000 feet

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

6/8891 Bullhead City, AZ, Wednesday, October 14, 2026 Local 14 nm from the route, 548 nm along the route · a VIP movement · starts Wednesday 14 October · ZLA
6/8887 Indio, CA, Sunday, October 11, 2026 through Monday, October 12, 2026 Local 11 nm from the route, 677 nm along the route · security · until 12 October · ZLA
6/4812 El Centro, CA, Wednesday, July 15, 2026 through Tuesday, July 13, 2027 Local 25 nm from the route, 687 nm along the route · security · until 13 July · ZLA

Daylight

Sunset at FNL 6:24 pm MDT (00:24 UTC), at SAN 6:19 pm PDT (01:19 UTC) (civil twilight ends 6:44 pm PDT (01:44 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

Radar now, the southern Rockies · loop National Weather Service

Radar now, the Pacific Southwest · 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: Northern Colorado Regional, San Diego International.