Best Time to Fly AUS to HRL: On-Time Stats by Hour & Airline
Austin - Bergstrom International → Valley International
Data through July 2026 · Last updated October 18, 2026
708 flights were scheduled from Austin (AUS) to Harlingen/San Benito (HRL) in the last 12 months, and 73.4% of those that flew arrived on time, 4.3 points below the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (85% on time) and July the worst month (58%).
The cancellation rate was 0.3% (US average 1.8%).
AUS to HRL on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlines | 73.4% | 62 min | 0.3% | 708 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly AUS to HRL
On-time arrival % by scheduled departure hour (local time), 1,595 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | Limited data | 27 | |
| 9am–10am | 92.0% | 0.0% | 200 |
| 10am–11am | 92.8% | 1.8% | 340 |
| 11am–12pm | 85.7% | 0.7% | 148 |
| 12pm–1pm | 77.2% | 1.7% | 58 |
| 1pm–2pm | Limited data | 5 | |
| 2pm–3pm | Limited data | 13 | |
| 3pm–4pm | 65.0% | 2.9% | 103 |
| 4pm–5pm | Limited data | 13 | |
| 5pm–6pm | 83.3% | 0.0% | 36 |
| 6pm–7pm | 75.5% | 2.0% | 51 |
| 7pm–8pm | 63.6% | 0.5% | 185 |
| 8pm–9pm | 62.0% | 0.8% | 236 |
| 9pm–10pm | 64.9% | 3.3% | 180 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on AUS to HRL
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 71.0% | -9.0 pts | 0.0% | 31 |
| Christmas & New Year (Dec 20 - Jan 3) | 82.6% | +2.7 pts | 1.4% | 70 |
| Summer peak (Jun 15 - Aug 15) | 65.9% | -14.0 pts | 0.4% | 262 |
| All other days | 80.0% | — | 1.5% | 1,232 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).