Best Time to Fly AUS to BOS: On-Time Stats by Hour & Airline
Austin - Bergstrom International → Logan International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 65.1% of Austin (AUS) to Boston (BOS) flights arrived on time (1,673 scheduled flights). That is 12.5 points below the national average of 77.6%.
Delta Air Lines was the most punctual of the 3 airlines on the route at 69.9%, while Southwest Airlines trailed at 55.6%.
January has been the best month (77% on time) and Thursday the weakest day of the week (63%).
2.5% of flights were cancelled, versus 1.8% nationally.
AUS to BOS 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 |
|---|---|---|---|---|
| Delta Air Lines | 69.9% | 93 min | 2.5% | 996 |
| JetBlue | 59.9% | 84 min | 2.8% | 395 |
| Southwest Airlines | 55.6% | 51 min | 1.8% | 282 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly AUS to BOS
On-time arrival % by scheduled departure hour (local time), 3,040 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 13 | |
| 7am–8am | 89.9% | 1.7% | 693 |
| 8am–9am | Limited data | 21 | |
| 9am–10am | 68.8% | 0.0% | 64 |
| 10am–11am | 71.4% | 5.4% | 74 |
| 11am–12pm | 72.0% | 1.6% | 185 |
| 12pm–1pm | 52.9% | 1.9% | 208 |
| 1pm–2pm | 53.3% | 2.6% | 308 |
| 2pm–3pm | 57.7% | 0.8% | 375 |
| 3pm–4pm | 54.0% | 0.0% | 37 |
| 4pm–5pm | 55.9% | 0.0% | 34 |
| 5pm–6pm | 66.5% | 0.9% | 437 |
| 6pm–7pm | 66.3% | 3.1% | 523 |
| 7pm–8pm | 72.6% | 3.1% | 64 |
| 8pm–9pm | Limited data | 4 | |
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 BOS
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) | 70.9% | +0.9 pts | 0.0% | 55 |
| Christmas & New Year (Dec 20 - Jan 3) | 76.0% | +6.0 pts | 2.9% | 103 |
| Summer peak (Jun 15 - Aug 15) | 64.2% | -5.8 pts | 3.1% | 621 |
| All other days | 70.0% | — | 1.6% | 2,261 |
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).