Columbus (CMH) to Atlanta (ATL): On-Time Performance
Data through July 2026
The calendar drives reliability on CMH–ATL. October 2024 flights landed on schedule 94% of the time, but July 2026 dropped to 74% — a gap of 20 points. Across the full period the route averages 85% on-time against a national 78%. Morning departures also hold up better than evening ones (90% vs 75%), which matters most in the rough months.
- On-time
- 85%
- arrived <15 min late
- Avg delay
- 12 min
- completed flights
- Cancelled
- 1.3%
- Flights/day
- 8.6
- last 12 months
- Duration
- 1h 40m
- scheduled
- Distance
- 447 mi
Best airline from CMH to ATL
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlinesmost reliable | 87% | 7 min | 1.1% | 90 |
| Delta Air Lines | 86% | 12 min | 1.3% | 5,448 |
| Southwest Airlines | 82% | 11 min | 0.7% | 978 |
| Frontier Airlines | 49% | 35 min | 3.9% | 155 |
Monthly on-time trend
Best time to fly from CMH to ATL
Aim for departures around 5 a.m. (96% on-time); avoid 8 p.m. departures (65%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 81% | 14 min |
| Tuesday | 88% | 11 min |
| Wednesdaybest | 90% | 7 min |
| Thursday | 86% | 9 min |
| Friday | 83% | 16 min |
| Saturday | 86% | 11 min |
| Sunday | 80% | 17 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 operations36%
- National airspace system23%
- Weather2%
Frequently asked questions
- How often are flights from CMH to ATL delayed?
- 15% of CMH–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 12 minutes.
- Which airline is most reliable from CMH to ATL?
- Spirit Airlines has the best on-time record on this route at 87%, based on 90 flights. 4 airlines flew CMH–ATL frequently enough to compare in this period.
- What is the best time of day to fly from CMH to ATL?
- Departures around 5 a.m. have the best record (96% on-time), while departures around 8 p.m. have the worst (65%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from CMH to ATL?
- The scheduled CMH–ATL flight time averages 1h 40m over 447 miles. Actual arrival times vary — flights on this route land 15+ minutes late 15% of the time.
- How often are CMH to ATL flights cancelled?
- 1.3% 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 CMH to ATL?
- July 2026 was the roughest month in this dataset, with only 74% of arrivals on time. The best was October 2024 at 94%. If your dates are flexible, that 20-point gap is worth planning around.
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Based on 6,673 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.