Boise (BOI) to Atlanta (ATL): On-Time Performance
Data through July 2026
The calendar drives reliability on BOI–ATL. February 2026 flights landed on schedule 100% of the time, but July 2025 dropped to 63% — a gap of 38 points. Across the full period the route averages 80% on-time against a national 78%.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 1.5%
- Flights/day
- 1.5
- last 12 months
- Duration
- 4h 6m
- scheduled
- Distance
- 1,838 mi
Monthly on-time trend
Best time to fly from BOI to ATL
Aim for departures around 1 p.m. (85% on-time); avoid 11 p.m. departures (74%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 83% | 9 min |
| Tuesday | 80% | 17 min |
| Wednesday | 79% | 12 min |
| Thursday | 83% | 18 min |
| Friday | 76% | 15 min |
| Saturdaybest | 84% | 12 min |
| Sunday | 76% | 18 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft39%
- Airline operations41%
- National airspace system19%
- Weather1%
Frequently asked questions
- How often are flights from BOI to ATL delayed?
- 20% of BOI–ATL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 15 minutes.
- What is the best time of day to fly from BOI to ATL?
- Departures around 1 p.m. have the best record (85% on-time), while departures around 11 p.m. have the worst (74%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from BOI to ATL?
- The scheduled BOI–ATL flight time averages 4h 6m over 1,838 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are BOI to ATL flights cancelled?
- 1.5% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from BOI to ATL?
- July 2025 was the roughest month in this dataset, with only 63% of arrivals on time. The best was February 2026 at 100%. If your dates are flexible, that 38-point gap is worth planning around.
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Based on 1,122 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.