St. Louis Downtown Airport to San Diego International CPS → SAN
1,359 nautical miles (1,564 statute miles) west on a straight line, true course 263°, about 263° magnetic at the departure end (variation 0E). At 120 knots that is 13 h 52 min at the quickest height in today's winds (10,500 ft, a 22-knot headwind), arriving about 12:48 pm PDT (19:48 UTC). Right now CPS is VFR, wind from the south-southeast (160°) at 4 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: 3 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 3W: 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 130 to 640 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 640 to 1079 nm out.
- AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft. Over the last 680 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1039 to 1129 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 1049 to 1059 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 CPS.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B737 at 14,000 ft, 27 nm south, 12:15 am CDT (05:15 UTC): moderate turbulence, remarks: during the descent through clouds. 1089 nm along the route, 27 nm south of the line.
as filed, and in English
PHX UA /OV PXR339030/TM 0515/FL140/TP B737/TB OCNL MOD/RM DURD THROUGH CLOUDS
- Report
- a routine report filed through PHX
- Where
- 30 nm north (339°) of PXR
- Time
- 05:15 UTC
- Height
- at 14,000 ft
- Aircraft
- B737
- Turbulence
- occasional moderate
- Remarks
- during the descent through clouds
- B737 at 2,500 ft, 0 nm northwest, 12:07 am CDT (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, 11:11 pm CDT (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, 10:05 pm CDT (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 14 forecast points nearest it (STL, COU, SGF, MKC, ICT, GAG, GCK, TCC, ALS, ABQ, FMN, 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 |
|---|---|---|---|---|---|---|
| 4,500 ft | 220° at 33 kt | +26 kt | 21 °C | 94 kt | 14 h 27 min | 1:23 pm PDT (20:23 UTC) |
| 6,500 ft | 220° at 31 kt | +26 kt | 15 °C | 94 kt | 14 h 27 min | 1:23 pm PDT (20:23 UTC) |
| 8,500 ft | 220° at 26 kt | +23 kt | 10 °C | 97 kt | 14 h 01 min | 12:57 pm PDT (19:57 UTC) |
| 10,500 ft | 230° at 25 kt | +22 kt | 7 °C | 98 kt | 13 h 52 min | 12:48 pm PDT (19:48 UTC) |
| 12,500 ft | 220° at 26 kt | +23 kt | 3 °C | 97 kt | 14 h 01 min | 12:57 pm PDT (19:57 UTC) |
| 14,500 ft | 230° at 30 kt | +27 kt | -1 °C | 93 kt | 14 h 37 min | 1:33 pm PDT (20:33 UTC) |
| 16,500 ft | 230° at 35 kt | +31 kt | -5 °C | 89 kt | 15 h 16 min | 2:12 pm PDT (21:12 UTC) |
| 18,000 ft FL180 | 230° at 38 kt | +34 kt | -8 °C | 86 kt | 15 h 48 min | 2:44 pm PDT (21:44 UTC) |
| 24,000 ft FL240 | 230° at 46 kt | +43 kt | -20 °C | 77 kt | 17 h 39 min | 4:35 pm PDT (23:35 UTC) |
| 30,000 ft FL300 | 240° at 64 kt | +63 kt | -29 °C | 57 kt | 23 h 51 min | 10:47 pm PDT (05:47 UTC) |
| 34,000 ft FL340 | 240° at 67 kt | +67 kt | -36 °C | 53 kt | 25 h 38 min | 12:34 am PDT (07:34 UTC) |
| 39,000 ft FL390 | 250° at 56 kt | +57 kt | -47 °C | 63 kt | 21 h 34 min | 8:30 pm PDT (03:30 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| STL | used from 0 nm out; 20 nm from the line | 250/24 | 250/24 16° | 260/23 9° | 270/16 6° | 260/25 -6° | 270/29 -19° | 290/34 -33° | 290/48 -41° | 290/54 -51° |
| COU | used from 50 nm out; 33 nm from the line | 230/31 | 230/30 15° | 260/16 11° | 270/14 6° | 260/24 -6° | 270/27 -18° | 270/37 -32° | 280/49 -41° | 290/56 -51° |
| SGF | used from 150 nm out; 60 nm from the line | 230/33 | 230/28 15° | 250/20 13° | 240/18 7° | 250/20 -6° | 250/24 -17° | 280/42 -31° | 280/49 -40° | 290/46 -51° |
| MKC | used from 200 nm out; 66 nm from the line | 220/44 | 250/28 18° | 250/18 13° | 240/12 6° | 280/24 -6° | 240/34 -18° | 260/47 -30° | 260/51 -40° | 270/58 -50° |
| ICT | used from 250 nm out; 73 nm from the line | 200/48 | 230/39 19° | 240/24 14° | 240/20 8° | 240/22 -6° | 250/31 -18° | 250/61 -29° | 260/58 -38° | 270/54 -49° |
| GAG | used from 400 nm out; 77 nm from the line | 220/40 19° | 230/28 14° | 240/23 8° | 230/21 -6° | 240/31 -19° | 250/66 -29° | 260/58 -38° | 260/47 -49° | |
| GCK | used from 450 nm out; 53 nm from the line | 220/48 21° | 230/37 14° | 250/30 8° | 230/37 -6° | 240/37 -20° | 240/69 -28° | 250/67 -37° | 260/58 -48° | |
| TCC | used from 600 nm out; 92 nm from the line | 210/42 | 230/33 14° | 230/32 6° | 220/35 -6° | 230/49 -19° | 240/72 -27° | 250/62 -36° | 250/52 -48° | |
| ALS | used from 700 nm out; 83 nm from the line | 230/37 4° | 220/54 -9° | 230/62 -22° | 240/77 -26° | 240/74 -33° | 230/59 -45° | |||
| ABQ | used from 750 nm out; 63 nm from the line | 220/27 11° | 210/35 5° | 220/46 -9° | 230/62 -20° | 240/78 -25° | 240/80 -35° | 240/56 -47° | ||
| FMN | used from 899 nm out; 97 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° | ||
| PRC | used from 949 nm out; 123 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 1149 nm out; 50 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 1299 nm out; 35 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 |
|---|---|---|---|---|---|---|---|
| CPS Cahokia/St Louis, IL | departure | VFR | from the south-southeast (160°) at 4 knots | 10+ mi | none | 412 ft | 12:53 am CDT (05:53 UTC) |
| SUS St Louis, MO | 20 nm out, 9 nm northwest of the line, tower | VFR | from the west-southwest (240°) at 3 knots | 10+ mi | none | 463 ft | 04:54 UTC |
| RAW Warsaw, MO | 150 nm out, 7 nm north of the line | VFR | from the south (180°) at 4 knots | 10+ mi | none | 936 ft | 05:35 UTC |
| ICT Wichita, KS | 350 nm out, 2 nm southeast of the line, tower | VFR | from the south (180°) at 14 knots, gusting to 20 | 10+ mi | none | 1,332 ft | 04:53 UTC |
| LBL Liberal, KS | 520 nm out, 2 nm south of the line | VFR | from the south (180°) at 12 knots | 10+ mi | none | 2,885 ft | 04:56 UTC |
| EHA Elkhart, KS | 560 nm out, 8 nm northwest of the line | VFR | from the south (190°) at 18 knots, gusting to 24 | 10+ mi | none | 3,621 ft | 05:35 UTC |
| SAF Santa Fe, NM | 780 nm out, 21 nm south of the line, tower | VFR Sky: a few clouds at 10,000 feet | from the southwest (220°) at 4 knots | 10+ mi | none | 6,348 ft | 05:53 UTC |
| GUP Gallup, NM | 909 nm out, 12 nm north of the line | VFR Sky: a few clouds at 9,000 feet | from the south (180°) at 8 knots | 10+ mi | none | 6,472 ft | 04:53 UTC |
| INW Winslow, AZ | 1009 nm out, 14 nm north of the line | VFR | from the south (190°) at 9 knots | 10+ mi | none | 4,941 ft | 04:56 UTC |
| PRC Prescott, AZ | 1099 nm out, 21 nm north of the line, tower | VFR Sky: a few clouds at 3,600 feet, a broken layer at 5,500 feet, overcast at 9,500 feet | from the south-southwest (200°) at 7 knots | 10+ mi | 5,500 ft | 5,045 ft | 04:53 UTC |
| RNM Ramona, CA | 1339 nm out, 12 nm northwest of the line, tower | marginal VFR Sky: a few clouds at 500 feet, a broken layer at 1,500 feet, overcast at 2,500 feet | from the west (260°) at 3 knots | 8 mi | 1,500 ft | 1,394 ft | 05:38 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 6,472 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, 12:48 pm PDT (19:48 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 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
The forecast for CPS, the departure
- From Mon 1:00 am CDT (06:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
- From Mon 11:00 am CDT (16:00 UTC): wind from the southwest at 10 knots, visibility more than 6 miles, clear skies
Temporary flight restrictions on the line or within 25 nm of it
- 6/4812 El Centro, CA, Wednesday, July 15, 2026 through Tuesday, July 13, 2027 Local 4 nm from the route, 1289 nm along the route · security · until 13 July · ZLA
Daylight
Sunset at CPS 6:27 pm CDT (23:27 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
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: St. Louis Downtown Airport, San Diego International.