Plan a flight · Mon 8:03 am PDT (15:03 UTC)

Los Angeles International to St. Louis Downtown Airport LAX → CPS

1,390 nautical miles (1,600 statute miles) east on a straight line, true course 070°, about 058° magnetic at the departure end (variation 12E). At 120 knots that is 7 h 06 min at the quickest height in today's winds (34,000 ft, a 76-knot tailwind), arriving about 5:09 pm CDT (22:09 UTC). 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: 7 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 SIERRA 2E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 89 nm of the route.
AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 40 to 119 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 218 to 596 nm out.
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 248 to 338 nm out.
AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 268 to 506 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the route from 298 to 774 nm out.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the route from 586 to 715 nm out.
AIRMET TANGO 2W: 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 973 to 1321 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 LAX.

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

urgent A21N at 3,000 ft, 11 nm south, 8:00 am PDT (15:00 UTC): remarks: bases 3,000 ft tops 9,000 ft. At the departure end, 11 nm south of the line.
as filed, and in English
```
LAX UUA /OV LGB/TM 1500/FL030/TP A21N/RM BASES 030 TOPS 090
```
Report
an urgent report filed through LAX
Where
over LGB
Time
15:00 UTC
Height
at 3,000 ft
Aircraft
A21N
Remarks
bases 3,000 ft tops 9,000 ft
B737 at 8,500 ft, 1 nm southwest, 6:58 am PDT (13:58 UTC): moderate turbulence above 8,500 ft. At the departure end, 1 nm southwest of the line.
as filed, and in English
```
LAX UA /OV 8 SW OF LAX/TM 1358/FL085/TP B737/TB MOD TURB 085
```
Report
a routine report filed through LAX
Where
8 southwest of lax
Time
13:58 UTC
Height
at 8,500 ft
Aircraft
B737
Turbulence
moderate turbulence at 8,500 ft
A21N at 8,000 ft, 1 nm southwest, 6:30 am PDT (13:30 UTC): moderate turbulence. At the departure end, 1 nm southwest of the line.
as filed, and in English
```
LAX UA /OV LAX/TM 1330/FL080/TP A21N/TB MODERATE
```
Report
a routine report filed through LAX
Where
over LAX
Time
13:30 UTC
Height
at 8,000 ft
Aircraft
A21N
Turbulence
moderate
B737 at 13,000 ft, 15 nm north, 7:00 am PDT (14:00 UTC): moderate turbulence, remarks: dur desct from 13,000 ft to 11,000 ft. At the departure end, 15 nm north of the line.
as filed, and in English
```
ONT UA /OV 25N ONT/TM 1400/FL130/TP B737/TB MOD TURB/RM DUR DESCT 130-110
```
Report
a routine report filed through ONT
Where
25N ont
Time
14:00 UTC
Height
at 13,000 ft
Aircraft
B737
Turbulence
moderate turbulence
Remarks
dur desct from 13,000 ft to 11,000 ft
A321 at 19,000 ft, 31 nm north, 5:39 am PDT (12:39 UTC): moderate chop turbulence, remarks: zlawc. 248 nm along the route, 31 nm north of the line.
as filed, and in English
```
CDC UA /OV PGS275017/TM 1239/FL190/TP A321/TB MOD CHOP/RM ZLAWC AWC-WEB
```
Report
a routine report filed through CDC
Where
17 nm west (275°) of PGS
Time
12:39 UTC
Height
at 19,000 ft
Aircraft
A321
Turbulence
moderate chop
Remarks
zlawc
BE20 at 15,000 ft, 36 nm north, 7:45 am PDT (14:45 UTC): moderate turbulence, light icing, 0 °C, remarks: ice 150-125-ZDVWC-36. 546 nm along the route, 36 nm north of the line.
as filed, and in English
```
FMN UA /OV RSK008025/TM 1445/FL150/TP BE20/SK TOP 160 BASE 115/TA 00/TB OCNL MOD/IC LGT MX/RM ICE 150-125-ZDVWC-36
```
Report
a routine report filed through FMN
Where
25 nm north (008°) of RSK
Time
14:45 UTC
Height
at 15,000 ft
Aircraft
BE20
Sky
top 16,000 ft base 11,500 ft
Temperature
0 °C
Turbulence
occasional moderate
Icing
light mixed
Remarks
ice 150-125-ZDVWC-36
B737 at 8,000 ft, 1 nm southwest, 7:18 am PDT (14:18 UTC): a routine report with nothing remarked on. At the departure end, 1 nm southwest of the line.
as filed, and in English
```
LAX UA /OV LAX/TM 1418/FL080/TP B737/SK B024 T080
```
Report
a routine report filed through LAX
Where
over LAX
Time
14:18 UTC
Height
at 8,000 ft
Aircraft
B737
Sky
B024 T080
A321 at 2,900 ft, 0 nm east, 6:09 am PDT (13:09 UTC): a broken layer above 2,900 ft. At the departure end, 0 nm east of the line.
as filed, and in English
```
KLAX UA /OV KLAX/TM 1309/FL029/TP A321/SK BKN029
```
Report
a routine report filed through KLAX
Where
over KLAX
Time
13:09 UTC
Height
at 2,900 ft
Aircraft
A321
Sky
a broken layer from 2,900 ft
A321 at 3,000 ft, 11 nm south, 7:59 am PDT (14:59 UTC): scattered clouds above 3,000 ft. At the departure end, 11 nm south of the line.
as filed, and in English
```
LGB UA /OV KLGB/TM 1459/FL030/TP A321/SK SCT030
```
Report
a routine report filed through LGB
Where
over KLGB
Time
14:59 UTC
Height
at 3,000 ft
Aircraft
A321
Sky
scattered clouds from 3,000 ft
F900 at 8,000 ft, 11 nm northwest, 7:50 am PDT (14:50 UTC): remarks: scattered layer. At the departure end, 11 nm northwest of the line.
as filed, and in English
```
BUR UA /OV 4 S BUR/TM 1450/FL080/TP F900/SK BASES 050 TOPS 065/RM SCT LAYER
```
Report
a routine report filed through BUR
Where
4 south bur
Time
14:50 UTC
Height
at 8,000 ft
Aircraft
F900
Sky
bases 5,000 ft tops 6,500 ft
Remarks
scattered layer
B738 at 2,200 ft, 3 nm southwest, 7:42 am PDT (14:42 UTC): a broken layer above 2,200 ft, remarks: bases on approach runway 24R. At the departure end, 3 nm southwest of the line.
as filed, and in English
```
KLAX UA /OV KOBEE/TM 1442/FL022/TP B738/SK BKN022/RM BASES ON APP RY24R
```
Report
a routine report filed through KLAX
Where
kobee
Time
14:42 UTC
Height
at 2,200 ft
Aircraft
B738
Sky
a broken layer from 2,200 ft
Remarks
bases on approach runway 24R
B737 at 700 ft, 11 nm south, 7:20 am PDT (14:20 UTC): scattered clouds from 700 ft to 3,500 ft. At the departure end, 11 nm south of the line.
as filed, and in English
```
LGB UA /OV KLGB/TM 1420/FL007/TP B737/SK SCT007-TOP035
```
Report
a routine report filed through LGB
Where
over KLGB
Time
14:20 UTC
Height
at 700 ft
Aircraft
B737
Sky
scattered clouds from 700 ft, tops 3,500 ft
BCS1 at 3,500 ft, 11 nm south, 7:18 am PDT (14:18 UTC): a routine report with nothing remarked on. At the departure end, 11 nm south of the line.
as filed, and in English
```
LGB UA /OV LGB/TM 1418/FL035/TP BCS1/SK BASE 007 TOPS 035
```
Report
a routine report filed through LGB
Where
over LGB
Time
14:18 UTC
Height
at 3,500 ft
Aircraft
BCS1
Sky
base 700 ft tops 3,500 ft
A359 at 2,100 ft, 3 nm southwest, 7:13 am PDT (14:13 UTC): a broken layer from 2,100 ft to 3,000 ft, remarks: on approach runway 24R. At the departure end, 3 nm southwest of the line.
as filed, and in English
```
KLAX UA /OV KOBEE/TM 1413/FL021/TP A359/SK BKN021-TOP030/RM ON APP RY24R
```
Report
a routine report filed through KLAX
Where
kobee
Time
14:13 UTC
Height
at 2,100 ft
Aircraft
A359
Sky
a broken layer from 2,100 ft, tops 3,000 ft
Remarks
on approach runway 24R

13 more routine reports are on the map.

Winds aloft along the route, and the time en route the forecast for use 14:00–21:00 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 11 forecast points nearest it (ONT, LAS, PRC, FMN, ALS, PUB, GCK, ICT, MKC, COU, STL). 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	240° at 22 kt	−20 kt	15 °C	140 kt	9 h 56 min	7:59 pm CDT (00:59 UTC)
7,500 ft	220° at 23 kt	−19 kt	11 °C	139 kt	10 h	8:03 pm CDT (01:03 UTC)
9,500 ft	220° at 26 kt	−21 kt	8 °C	141 kt	9 h 51 min	7:54 pm CDT (00:54 UTC)
11,500 ft	230° at 31 kt	−27 kt	4 °C	147 kt	9 h 27 min	7:30 pm CDT (00:30 UTC)
13,500 ft	230° at 34 kt	−31 kt	0 °C	151 kt	9 h 12 min	7:15 pm CDT (00:15 UTC)
15,500 ft	230° at 38 kt	−34 kt	-4 °C	154 kt	9 h 02 min	7:05 pm CDT (00:05 UTC)
17,500 ft	230° at 41 kt	−38 kt	-8 °C	158 kt	8 h 48 min	6:51 pm CDT (23:51 UTC)
18,000 ft FL180	230° at 42 kt	−39 kt	-9 °C	159 kt	8 h 45 min	6:48 pm CDT (23:48 UTC)
24,000 ft FL240	230° at 53 kt	−49 kt	-20 °C	169 kt	8 h 13 min	6:16 pm CDT (23:16 UTC)
30,000 ft FL300	240° at 70 kt	−68 kt	-29 °C	188 kt	7 h 24 min	5:27 pm CDT (22:27 UTC)
34,000 ft FL340	240° at 76 kt	−76 kt	-37 °C	196 kt	7 h 06 min	5:09 pm CDT (22:09 UTC)
39,000 ft FL390	240° at 76 kt	−76 kt	-47 °C	196 kt	7 h 06 min	5:09 pm CDT (22:09 UTC)

Based on data from the 12th at 12:00 UTC; valid on the 12th at 18:00 UTC for use 14:00 to 21:00 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; 17 nm from the line	L/V	210/13 3°	220/24 0°	220/31 -3°	230/33 -14°	240/35 -22°	230/55 -31°	230/67 -37°	230/74 -45°
LAS	used from 149 nm out; 73 nm from the line		220/15 7°	210/23 2°	200/32 -4°	200/43 -14°	210/64 -23°	210/78 -32°	220/81 -38°	220/80 -45°
PRC	used from 248 nm out; 56 nm from the line			200/38 5°	200/44 -1°	210/72 -11°	220/78 -20°	220/85 -29°	230/99 -36°	230/105 -47°
FMN	used from 397 nm out; 105 nm from the line			170/14 8°	210/28 0°	230/57 -10°	220/74 -21°	230/82 -30°	230/95 -37°	230/102 -47°
ALS	used from 596 nm out; 40 nm from the line				230/34 2°	230/57 -9°	230/72 -19°	230/82 -27°	230/91 -36°	240/89 -48°
PUB	used from 695 nm out; 68 nm from the line			250/31 11°	240/42 5°	230/46 -7°	230/59 -20°	240/77 -30°	230/94 -37°	240/95 -49°
GCK	used from 794 nm out; 73 nm from the line		250/23 20°	230/35 13°	240/47 7°	240/42 -7°	250/43 -20°	240/81 -28°	250/87 -37°	250/83 -49°
ICT	used from 943 nm out; 79 nm from the line	200/26	240/31 21°	230/30 14°	240/30 7°	250/38 -8°	240/49 -19°	260/73 -27°	270/69 -37°	270/63 -48°
MKC	used from 1142 nm out; 52 nm from the line	220/35	240/30 21°	240/27 13°	240/31 6°	260/31 -7°	250/43 -21°	270/70 -28°	280/72 -36°	280/59 -49°
COU	used from 1241 nm out; 35 nm from the line	240/28	240/22 17°	250/18 12°	260/22 6°	270/23 -7°	260/39 -19°	290/70 -30°	290/71 -37°	290/58 -48°
STL	used from 1340 nm out; 19 nm from the line	240/25	240/21 15°	260/21 12°	270/21 7°	280/25 -7°	280/39 -19°	290/65 -31°	290/70 -38°	290/59 -48°

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	Elevation
LAX Los Angeles, CA	departure	no report just now	127 ft
EMT El Monte, CA	20 nm out, 2 nm north of the line, tower	no report just now	295 ft
IFP Bullhead City, AZ	209 nm out, 9 nm northwest of the line, tower	no report just now	707 ft
GCN Grand Canyon, AZ	328 nm out, 20 nm north of the line, tower	no report just now	6,608 ft
FMN Farmington, NM	526 nm out, 17 nm north of the line, tower	no report just now	5,506 ft
TAD Trinidad, CO	715 nm out, 6 nm north of the line	no report just now	5,761 ft
GCK Garden City, KS	894 nm out, 15 nm north of the line, tower	no report just now	2,890 ft
HUT Hutchinson, KS	1023 nm out, 4 nm northeast of the line, tower	no report just now	1,542 ft
BUM Butler, MO	1191 nm out, 3 nm southeast of the line	no report just now	893 ft
SUS St Louis, MO	1370 nm out, 7 nm northwest of the line, tower	no report just now	463 ft
CPS Cahokia/St Louis, IL	destination	no report just now	412 ft

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 CPS when you get there the forecast at the estimated arrival, 5:09 pm CDT (22:09 UTC)

CPS has no terminal forecast; use the nearest airport that does.

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

4/3635 DISNEYLAND THEME PARK, ANAHEIM,, CA 13 nm from the route, at the departure end · security · ZLA
6/8891 Bullhead City, AZ, Wednesday, October 14, 2026 Local on the route, 199 nm along the route · a VIP movement · starts Wednesday 14 October · ZLA

Daylight

Sunset at LAX 6:22 pm PDT (01:22 UTC), at CPS 6:27 pm CDT (23:27 UTC) (civil twilight ends 6:53 pm CDT (23:53 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 southern Plains · 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: Los Angeles International, St. Louis Downtown Airport.