Best Time to Fly ATL to BOS: On-Time Stats by Hour & Airline
Hartsfield-Jackson Atlanta International → Logan International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 74.0% of Atlanta (ATL) to Boston (BOS) flights arrived on time (4,977 scheduled flights). That is 3.7 points below the national average of 77.6%.
Delta Air Lines was the most punctual of the 3 airlines on the route at 75.7%, while Frontier Airlines trailed at 66.8%.
November has been the best month (82% on time) and Sunday the weakest day of the week (70%).
2.1% of flights were cancelled, versus 1.8% nationally.
ATL 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 | 75.7% | 61 min | 1.8% | 3,693 |
| JetBlue | 70.1% | 88 min | 3.2% | 844 |
| Frontier Airlines | 66.8% | 55 min | 2.6% | 427 |
| Spirit Airlines | Limited data | 13 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ATL to BOS
On-time arrival % by scheduled departure hour (local time), 10,267 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 82.8% | 2.9% | 102 |
| 6am–7am | 85.8% | 2.2% | 411 |
| 7am–8am | 88.6% | 1.6% | 925 |
| 8am–9am | 89.8% | 1.5% | 649 |
| 9am–10am | 83.7% | 1.1% | 540 |
| 10am–11am | 84.8% | 1.1% | 464 |
| 11am–12pm | 79.8% | 1.3% | 849 |
| 12pm–1pm | 71.4% | 0.9% | 876 |
| 1pm–2pm | 71.5% | 0.8% | 608 |
| 2pm–3pm | 68.1% | 0.9% | 633 |
| 3pm–4pm | 69.1% | 0.4% | 458 |
| 4pm–5pm | 60.0% | 1.3% | 549 |
| 5pm–6pm | 65.6% | 1.4% | 371 |
| 6pm–7pm | 66.0% | 1.1% | 564 |
| 7pm–8pm | 66.5% | 4.2% | 499 |
| 8pm–9pm | 65.7% | 2.3% | 516 |
| 9pm–10pm | 64.5% | 1.2% | 246 |
| 10pm–11pm | 72.5% | 2.7% | 1,006 |
| 11pm–12am | Limited data | 1 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ATL 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) | 77.6% | +1.2 pts | 0.5% | 211 |
| Christmas & New Year (Dec 20 - Jan 3) | 68.8% | -7.6 pts | 4.7% | 408 |
| Summer peak (Jun 15 - Aug 15) | 68.1% | -8.3 pts | 2.0% | 1,787 |
| All other days | 76.5% | — | 1.4% | 7,861 |
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).