San Antonio International to Austin-Bergstrom International SAT → AUS
57 nautical miles (66 statute miles) northeast on a straight line, true course 046°, about 042° magnetic at the departure end (variation 4E). At 120 knots that is 25 min at the quickest height in today's winds (18,000 ft, a 15-knot tailwind), arriving about 8:21 pm CDT (01:21 UTC), after sunset at the destination. Right now SAT is VFR, wind from the south-southeast (150°) at 10 knots, gusting to 20; AUS is VFR, wind from the south-southeast (150°) at 12 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: 277 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
No SIGMET or AIRMET covers any part of this route right now.
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 SAT.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
Not fetched just now.
Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 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 1 forecast point nearest it (SAT). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 3,500 ft | 130° at 22 kt | +2 kt | 118 kt | 29 min | 8:25 pm CDT (01:25 UTC) | |
| 5,500 ft | 140° at 24 kt | −1 kt | 121 kt | 28 min | 8:24 pm CDT (01:24 UTC) | |
| 7,500 ft | 150° at 21 kt | −6 kt | 16 °C | 126 kt | 27 min | 8:23 pm CDT (01:23 UTC) |
| 9,500 ft | 170° at 18 kt | −11 kt | 12 °C | 131 kt | 26 min | 8:22 pm CDT (01:22 UTC) |
| 11,500 ft | 190° at 14 kt | −10 kt | 8 °C | 130 kt | 26 min | 8:22 pm CDT (01:22 UTC) |
| 13,500 ft | 200° at 12 kt | −12 kt | 4 °C | 132 kt | 26 min | 8:22 pm CDT (01:22 UTC) |
| 15,500 ft | 220° at 13 kt | −13 kt | 1 °C | 133 kt | 26 min | 8:22 pm CDT (01:22 UTC) |
| 17,500 ft | 240° at 14 kt | −14 kt | -3 °C | 134 kt | 26 min | 8:22 pm CDT (01:22 UTC) |
| 18,000 ft FL180 | 240° at 15 kt | −15 kt | -4 °C | 135 kt | 25 min | 8:21 pm CDT (01:21 UTC) |
| 24,000 ft FL240 | 220° at 14 kt | −14 kt | -13 °C | 134 kt | 26 min | 8:22 pm CDT (01:22 UTC) |
| 30,000 ft FL300 | 270° at 11 kt | −8 kt | -28 °C | 128 kt | 27 min | 8:23 pm CDT (01:23 UTC) |
| 34,000 ft FL340 | 280° at 10 kt | −6 kt | -40 °C | 126 kt | 27 min | 8:23 pm CDT (01:23 UTC) |
| 39,000 ft FL390 | 310° at 18 kt | −2 kt | -51 °C | 122 kt | 28 min | 8:24 pm CDT (01:24 UTC) |
Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| SAT | used from 0 nm out; 24 nm from the line | 130/22 | 140/24 18° | 170/19 13° | 190/13 7° | 240/15 -4° | 220/14 -13° | 270/11 -28° | 280/10 -40° | 310/18 -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 |
|---|---|---|---|---|---|---|---|
| SAT San Antonio, TX | departure | VFR Sky: a few clouds at 6,500 feet, a few clouds at 20,000 feet | from the south-southeast (150°) at 10 knots, gusting to 20 | 10+ mi | none | 809 ft | 6:51 pm CDT (23:51 UTC) |
| HYI Austin, TX | 38 nm out, 6 nm southeast of the line, tower | VFR | from the south-southeast (160°) at 10 knots | 10+ mi | none | 594 ft | 23:56 UTC |
| AUS Austin, TX | destination | VFR Sky: a few clouds at 12,000 feet, a few clouds at 25,000 feet | from the south-southeast (150°) at 12 knots | 10+ mi | none | 541 ft | 7:53 pm CDT (00:53 UTC) |
The highest airport on this list sits at 809 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At AUS when you get there the forecast at the estimated arrival, 8:21 pm CDT (01:21 UTC)
Wind from the south at 14 knots, visibility more than 6 miles, a few clouds at 6,000 feet, scattered clouds at 25,000 feet VFR
The whole forecast for AUS
- From Sun 7:00 pm CDT (00:00 UTC): wind from the south at 14 knots, visibility more than 6 miles, a few clouds at 6,000 feet, scattered clouds at 25,000 feet
- From Sun 10:00 pm CDT (03:00 UTC): wind from the south-southeast at 6 knots, visibility more than 6 miles, scattered clouds at 1,500 feet
- From Mon 7:00 am CDT (12:00 UTC): wind from the south-southeast at 3 knots, visibility more than 6 miles, a broken layer at 1,500 feet
- From Mon 12:00 pm CDT (17:00 UTC): wind from the south at 11 knots, visibility more than 6 miles, a broken layer at 2,500 feet
- From Mon 2:00 pm CDT (19:00 UTC): wind from the south at 13 knots, visibility more than 6 miles, a broken layer at 4,000 feet
The forecast for SAT, the departure
- From Sun 7:00 pm CDT (00:00 UTC): wind from the south-southeast at 15 knots, visibility more than 6 miles, a few clouds at 6,000 feet, scattered clouds at 25,000 feet
- From Mon 12:00 am CDT (05:00 UTC): wind from the southeast at 9 knots, visibility more than 6 miles, scattered clouds at 1,200 feet
- From Mon 6:00 am CDT (11:00 UTC): wind from the east-southeast at 5 knots, visibility more than 6 miles, a broken layer at 1,200 feet
- From Mon 12:00 pm CDT (17:00 UTC): wind from the south-southeast at 8 knots, visibility more than 6 miles, a broken layer at 2,500 feet
- From Mon 2:00 pm CDT (19:00 UTC): wind from the south at 11 knots, visibility more than 6 miles, a broken layer at 5,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/5849 Austin, TX, Friday, October 2, 2026 through Monday, October 12, 2026 UTC 6 nm from the route, at the destination end · drones kept away from a public gathering · until 12 October · ZHU
Daylight
Sunset at SAT 7:06 pm CDT (00:06 UTC), at AUS 7:03 pm CDT (00:03 UTC) (civil twilight ends 7:27 pm CDT (00:27 UTC)). At 120 knots the arrival at AUS is after sunset there (7:04 pm CDT (00:04 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: San Antonio International, Austin-Bergstrom International.