Route on-time record

SAN to AUS: most on-time flights and the best time to fly

San Diego (San Diego International Airport) to Austin (Austin Bergstrom International Airport). 2,529 nonstop flights in Jun 2025 to May 2026, 74% arrived within 15 minutes and 0.8% were cancelled. The most reliable flight number was Southwest 2630 at 7:25 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

SAN → AUS

San Diego to Austin: 2,529 nonstop flights a year

On time (12 months)

74%

Cancelled

0.8%

avg delay 15 min

Best time to leave

Before 9 AM

89% on time vs 62% noon to 3 PM

Most reliable airline

SkyWest

78% chance on time

Check SAN to AUS fares

Lowest nonstop fare seen in the next two months: $284 (Alaska 3489 on 2026-10-21). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Most reliable nonstop flights

Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.

#1 · Southwest 2630
7:25 AM → 12:15 PM2h 50m nonstop
Local times, typical schedule. Last flown 2026-04-06.
88%
chance on time
On time (history)
89%
Cancelled
0.0%
Avg arrival delay
5 min
- Arrived on time 89% of the time (28 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; Noon to 3 PM: 62%).
- Departs inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.
- Lands inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
Limited track record · 28 flights
Find Southwest 2630 fares Opens this date on Aviasales
#2 · Southwest 3996
6:20 AM → 11:10 AM2h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
On time (history)
93%
Cancelled
0.0%
Avg arrival delay
3 min
- Arrived on time 93% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; Noon to 3 PM: 62%).
- Departs inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.
Limited track record · 55 flights
Find Southwest 3996 fares Opens this date on Aviasales
#3 · SkyWest 3461 · sold as United Express, Delta Connection, American Eagle or Alaska
8:26 AM → 1:38 PM3h 12m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
On time (history)
83%
Cancelled
0.0%
Avg arrival delay
13 min
- Arrived on time 83% of the time (30 flights, Jun 2025 to May 2026).
- Never cancelled in 30 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; Noon to 3 PM: 62%).
- Departs inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.
Limited track record · 30 flights
Find 8:26 AM flight fares Opens this date on Aviasales
#4 · SkyWest 3300 · sold as United Express, Delta Connection, American Eagle or Alaska
8:01 AM → 1:11 PM3h 05m nonstop
Local times, typical schedule. Last flown 2026-05-12.
83%
chance on time
On time (history)
84%
Cancelled
1.0%
Avg arrival delay
10 min
- Arrived on time 84% of the time (303 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; Noon to 3 PM: 62%).
- Departs inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.
- Lands inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
Strong track record · 303 flights
Find 8:01 AM flight fares Opens this date on Aviasales
#5 · SkyWest 3038 · sold as United Express, Delta Connection, American Eagle or Alaska
10:47 AM → 3:52 PM3h 02m nonstop
Local times, typical schedule. Last flown 2026-05-12.
77%
chance on time
On time (history)
78%
Cancelled
1.1%
Avg arrival delay
15 min
- Arrived on time 78% of the time (89 flights, Jun 2025 to May 2026).
- Departs inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.
- Lands inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
Moderate track record · 89 flights
Find 10:47 AM flight fares Opens this date on Aviasales
#6 · SkyWest 3292 · sold as United Express, Delta Connection, American Eagle or Alaska
6:00 PM → 11:04 PM3h 00m nonstop
Local times, typical schedule. Last flown 2026-05-12.
76%
chance on time
On time (history)
77%
Cancelled
1.2%
Avg arrival delay
17 min
- Arrived on time 77% of the time (319 flights, Jun 2025 to May 2026).
- Departs outside SAN's trouble window (6 AM to noon, when 66% of its 164 ground stops and delay programs started).
Strong track record · 319 flights
Find 6:00 PM flight fares Opens this date on Aviasales
#7 · SkyWest 3357 · sold as United Express, Delta Connection, American Eagle or Alaska
5:11 PM → 10:17 PM3h 06m nonstop
Local times, typical schedule. Last flown 2026-05-31.
75%
chance on time
On time (history)
67%
Cancelled
0.0%
Avg arrival delay
18 min
- Arrived on time 67% of the time (30 flights, Jun 2025 to May 2026).
- Never cancelled in 30 scheduled flights.
- Departs outside SAN's trouble window (6 AM to noon, when 66% of its 164 ground stops and delay programs started).
- 51% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 30 flights
Find 5:11 PM flight fares Opens this date on Aviasales
#8 · Frontier 1878
5:08 PM → 10:00 PM2h 52m nonstop
Local times, typical schedule. Last flown 2026-04-13.
70%
chance on time
On time (history)
70%
Cancelled
1.5%
Avg arrival delay
15 min
- Arrived on time 70% of the time (132 flights, Jun 2025 to May 2026).
- Departs outside SAN's trouble window (6 AM to noon, when 66% of its 164 ground stops and delay programs started).
- 53% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 132 flights
Find Frontier 1878 fares Opens this date on Aviasales
#9 · SkyWest 3031 · sold as United Express, Delta Connection, American Eagle or Alaska
2:13 PM → 7:19 PM3h 06m nonstop
Local times, typical schedule. Last flown 2026-05-31.
69%
chance on time
On time (history)
66%
Cancelled
0.9%
Avg arrival delay
20 min
- Arrived on time 66% of the time (108 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (Noon to 3 PM: 62% on time; Before 9 AM: 89%).
- Departs outside SAN's trouble window (6 AM to noon, when 66% of its 164 ground stops and delay programs started).
Moderate track record · 108 flights
Find 2:13 PM flight fares Opens this date on Aviasales
#10 · Southwest 3353
5:35 PM → 10:15 PM2h 40m nonstop
Local times, typical schedule. Last flown 2026-04-06.
69%
chance on time
On time (history)
53%
Cancelled
0.0%
Avg arrival delay
20 min
- Arrived on time 53% of the time (15 flights, Jun 2025 to May 2026).
- Departs outside SAN's trouble window (6 AM to noon, when 66% of its 164 ground stops and delay programs started).
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 3353 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)78%
967 flights · 79% on time as flown · 1.2% cancel
Southwest Airlines72%
1,428 flights · 71% on time as flown · 0.5% cancel
Frontier Airlines71%
134 flights · 70% on time as flown · 1.1% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

Before 9 AM89%
612 flights · avg delay 6 min
9 AM to noon75%
594 flights · avg delay 14 min
Noon to 3 PM62%
361 flights · avg delay 20 min
3 to 6 PM72%
622 flights · avg delay 16 min
6 to 9 PM63%
340 flights · avg delay 23 min

Best day: Wednesday (81%). Worst: Friday (68%).

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

What delays this route

Late-arriving aircraft52%
Airline (crew, maintenance, boarding)27%
Air traffic control and airport volume19%
Severe weather2%

Share of delay minutes by the cause airlines report to the US DOT.

Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure

SAN to AUS questions

What time of day is best to fly SAN to AUS?: Before 9 AM: 89% of flights arrived on time, against 62% for departures noon to 3 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from SAN to AUS?: SkyWest, with a season-adjusted 78% chance of operating and arriving on time over 967 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
What is the worst month for delays on SAN to AUS?: May (66% on time); the best was September (84%), averaged over Jun 2023 to May 2026.
Is this a prediction for my flight?: No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.

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