Best Time to Fly BOS to ATL: On-Time Stats by Hour & Airline
Logan International → Hartsfield-Jackson Atlanta International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 77.9% of Boston (BOS) to Atlanta (ATL) flights arrived on time (4,973 scheduled flights). That is in line with the national average of 77.6%.
Delta Air Lines was the most punctual of the 3 airlines on the route at 81.5%, while Frontier Airlines trailed at 65.0%.
October has been the best month (84% on time) and Sunday the weakest day of the week (72%).
2.1% of flights were cancelled, versus 1.8% nationally.
BOS to ATL 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 | 81.5% | 76 min | 1.8% | 3,688 |
| JetBlue | 68.8% | 69 min | 3.1% | 846 |
| Frontier Airlines | 65.0% | 51 min | 3.3% | 427 |
| Spirit Airlines | Limited data | 12 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BOS to ATL
On-time arrival % by scheduled departure hour (local time), 10,263 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 87.1% | 2.4% | 809 |
| 6am–7am | 77.0% | 2.5% | 939 |
| 7am–8am | 81.7% | 1.8% | 283 |
| 8am–9am | 87.8% | 1.4% | 961 |
| 9am–10am | 86.7% | 1.6% | 763 |
| 10am–11am | 84.8% | 0.7% | 708 |
| 11am–12pm | 79.7% | 3.5% | 313 |
| 12pm–1pm | 82.4% | 0.8% | 745 |
| 1pm–2pm | 81.8% | 0.7% | 587 |
| 2pm–3pm | 79.9% | 0.8% | 246 |
| 3pm–4pm | 73.7% | 1.7% | 1,015 |
| 4pm–5pm | 63.6% | 1.5% | 408 |
| 5pm–6pm | 71.7% | 1.7% | 603 |
| 6pm–7pm | 69.9% | 1.6% | 840 |
| 7pm–8pm | 59.8% | 1.7% | 301 |
| 8pm–9pm | 66.2% | 1.9% | 620 |
| 9pm–10pm | 52.5% | 3.3% | 122 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BOS to ATL
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) | 74.6% | -4.7 pts | 0.5% | 211 |
| Christmas & New Year (Dec 20 - Jan 3) | 69.0% | -10.3 pts | 4.4% | 409 |
| Summer peak (Jun 15 - Aug 15) | 73.5% | -5.8 pts | 2.3% | 1,787 |
| All other days | 79.3% | — | 1.4% | 7,856 |
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).