Route on-time record
AUS to SFO: most on-time flights and the best time to fly
Austin (Austin Bergstrom International Airport) to San Francisco (San Francisco International Airport). 2,781 nonstop flights in Jun 2025 to May 2026, 76% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was United 2177 at 7:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
AUS → SFO
Austin to San Francisco: 2,781 nonstop flights a year
On time (12 months)
76%
Cancelled
0.9%
avg delay 17 min
Best time to leave
Before 9 AM
87% on time vs 62% 6 to 9 PM
Most reliable airline
United
80% chance on time
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 · United 2177
7:00 AM → 9:02 AM4h 02m nonstop
Local times, typical schedule. Last flown 2026-05-30.
92%
chance on time
- On time (history)
- 94%
- Cancelled
- 0.9%
- Avg arrival delay
- 6 min
- Arrived on time 94% of the time (225 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; 6 to 9 PM: 62%).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 91 ground stops and delay programs started).
- Lands inside SFO's trouble window: 61% of its 333 ground stops and delay programs started between 7 AM and 1 PM.
Strong track record · 225 flights
Find United 2177 fares Opens this date on Aviasales#2 · United 1348
5:20 AM → 7:05 AM3h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 89% of the time (9 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; 6 to 9 PM: 62%).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 91 ground stops and delay programs started).
- Lands inside SFO's trouble window: 61% of its 333 ground stops and delay programs started between 7 AM and 1 PM.
Limited track record · 9 flights
Find United 1348 fares Opens this date on Aviasales#3 · United 1688
3:12 PM → 5:05 PM4h 04m nonstop
Local times, typical schedule. Last flown 2026-04-29.
81%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 82% of the time (76 flights, Jun 2025 to May 2026).
- Never cancelled in 76 scheduled flights.
- Departs inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
Moderate track record · 76 flights
Find United 1688 fares Opens this date on Aviasales#4 · United 1668
8:45 AM → 10:49 AM4h 03m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
- On time (history)
- 78%
- Cancelled
- 0.4%
- Avg arrival delay
- 17 min
- Arrived on time 78% of the time (280 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; 6 to 9 PM: 62%).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 91 ground stops and delay programs started).
- Lands inside SFO's trouble window: 61% of its 333 ground stops and delay programs started between 7 AM and 1 PM.
Strong track record · 280 flights
Find United 1668 fares Opens this date on Aviasales#5 · United 442
3:30 PM → 5:19 PM3h 49m nonstop
Local times, typical schedule. Last flown 2026-05-31.
76%
chance on time
- On time (history)
- 45%
- Cancelled
- 0.0%
- Avg arrival delay
- 57 min
- Arrived on time 45% of the time (11 flights, Jun 2025 to May 2026).
- Departs inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find United 442 fares Opens this date on Aviasales#6 · United 1336
1:30 PM → 3:35 PM4h 02m nonstop
Local times, typical schedule. Last flown 2026-05-20.
74%
chance on time
- On time (history)
- 65%
- Cancelled
- 0.0%
- Avg arrival delay
- 31 min
- Arrived on time 65% of the time (72 flights, Jun 2025 to May 2026).
- Never cancelled in 72 scheduled flights.
- Departs inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
Moderate track record · 72 flights
Find United 1336 fares Opens this date on Aviasales#7 · United 292
6:00 PM → 8:02 PM4h 02m nonstop
Local times, typical schedule. Last flown 2026-05-29.
70%
chance on time
- On time (history)
- 70%
- Cancelled
- 0.9%
- Avg arrival delay
- 19 min
- Arrived on time 70% of the time (325 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 62% on time; Before 9 AM: 87%).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 91 ground stops and delay programs started).
Strong track record · 325 flights
Find United 292 fares Opens this date on Aviasales#8 · Delta 381
7:15 AM → 1:00 PM3h 48m nonstop
Local times, typical schedule. Last flown 2026-05-31.
69%
chance on time
- On time (history)
- 68%
- Cancelled
- 1.4%
- Avg arrival delay
- 22 min
- Arrived on time 68% of the time (352 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; 6 to 9 PM: 62%).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 91 ground stops and delay programs started).
Strong track record · 352 flights
Find Delta 381 fares Opens this date on Aviasales#9 · Delta 1077
3:00 PM → 4:51 PM3h 52m nonstop
Local times, typical schedule. Last flown 2026-05-31.
68%
chance on time
- On time (history)
- 53%
- Cancelled
- 0.0%
- Avg arrival delay
- 26 min
- Arrived on time 53% of the time (49 flights, Jun 2025 to May 2026).
- Never cancelled in 49 scheduled flights.
- Departs inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (49 flights), so its score leans on the airline's record at this hour.
Limited track record · 49 flights
Find Delta 1077 fares Opens this date on Aviasales#10 · Southwest 1777
2:15 PM → 4:20 PM4h 05m nonstop
Local times, typical schedule. Last flown 2026-04-06.
64%
chance on time
- On time (history)
- 60%
- Cancelled
- 0.0%
- Avg arrival delay
- 14 min
- Arrived on time 60% of the time (15 flights, Jun 2025 to May 2026).
- Departs inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 1777 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines80%
1,645 flights · 80% on time as flown · 0.9% cancel
- Alaska Airlines74%
404 flights · 77% on time as flown · 1.2% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)73%
30 flights · 63% on time as flown · 0.8% cancel
- Delta Air Lines69%
407 flights · 67% on time as flown · 1.1% cancel
- Southwest Airlines67%
295 flights · 67% on time as flown · 0.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM87%
767 flights · avg delay 10 min
- 9 AM to noon74%
754 flights · avg delay 18 min
- Noon to 3 PM73%
364 flights · avg delay 20 min
- 3 to 6 PM73%
628 flights · avg delay 19 min
- 6 to 9 PM62%
268 flights · avg delay 25 min
Best day: Saturday (83%). Worst: Sunday (74%).
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
- Air traffic control and airport volume40%
- Late-arriving aircraft36%
- Airline (crew, maintenance, boarding)23%
- Severe weather1%
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
AUS to SFO questions
- What time of day is best to fly AUS to SFO?
- Before 9 AM: 87% of flights arrived on time, against 62% for departures 6 to 9 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 AUS to SFO?
- United, with a season-adjusted 80% chance of operating and arriving on time over 1,645 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 AUS to SFO?
- May (61% on time); the best was October (86%), 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.
More routes from AUS
- SFO to AUS (return)
- AUS to DEN 78%
- AUS to DFW 73%
- AUS to ATL 81%
- AUS to LAX 82%
- AUS to PHX 79%
- AUS to ORD 73%
- AUS to BNA 77%
- AUS to LAS 75%
- AUS to MCO 73%
- AUS to IAH 76%
- AUS to SAN 75%
- AUS to DAL 78%
Live status: FAA delays and ground stops