Best Time to Fly ATL to BOI: On-Time Stats by Hour & Airline
Hartsfield-Jackson Atlanta International → Boise Air Terminal
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 81.6% of Atlanta (ATL) to Boise (BOI) flights arrived on time (545 scheduled flights). That is 3.9 points above the national average of 77.6%.
Delta Air Lines was the only reporting airline with regular flights on this route.
Over 24 months, Saturday was the most reliable day (86% on time) and March the worst month (67%).
The cancellation rate was 1.3% (US average 1.8%).
ATL to BOI 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 | 81.6% | 48 min | 1.3% | 545 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ATL to BOI
On-time arrival % by scheduled departure hour (local time), 1,078 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | 87.9% | 3.2% | 155 |
| 10am–11am | 88.8% | 0.8% | 511 |
| 11am–12pm | 93.7% | 0.0% | 63 |
| 12pm–1pm | Limited data | 1 | |
| 7pm–8pm | 63.3% | 0.7% | 141 |
| 8pm–9pm | 66.2% | 0.0% | 207 |
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 BOI
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) | Limited data | 23 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 73.1% | -10.2 pts | 0.0% | 52 |
| Summer peak (Jun 15 - Aug 15) | 77.9% | -5.5 pts | 0.5% | 218 |
| All other days | 83.3% | — | 1.1% | 785 |
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).