Flight Reliability
DL 2909 · Delta Air Lines
Columbus → Atlanta (CMH–ATL)
90
Nerd Approved
WanderNerd Reliability Score
- 91%
- Arrive within 15 minutes
- 3 min early
- Average arrival delay
- 1.9%
- Cancelled
- 9 min early
- Median arrival delay
Based on 315 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
DL 2909 arrived on time 98% of the time on Fridays. On Sundays: 87%.
A bit ahead of the CMH–ATL route.
DL 2909 arrived on time 91% of the time, versus 86% across the CMH–ATL route.
Better than the Delta Air Lines network average.
DL 2909 arrived on time 91% of the time, versus 81% across the Delta Air Lines network.
Ticking up lately.
DL 2909 arrived on time 92% of the time over the last three months in the data, compared with 88% in the three months before that.
The breakdown
- Mon87%(46 flights)
- Tue91%(45 flights)
- Wed96%(45 flights)
- Thu91%(44 flights)
- Fri98%(43 flights)
- Sat90%(40 flights)
- Sun87%(45 flights)
96%
May
Jun 79% → May 96% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 79% | 29 |
| July 2025 | 93% | 30 |
| August 2025 | 93% | 29 |
| September 2025 | 97% | 30 |
| October 2025 | 97% | 31 |
| November 2025 | 90% | 30 |
| December 2025 | 89% | 27 |
| January 2026 | 85% | 13 |
| February 2026 | 91% | 11 |
| March 2026 | 83% | 24 |
| April 2026 | 96% | 28 |
| May 2026 | 96% | 26 |
- Departures on time
- 94%
- Diverted
- 0.3%
- Flights flown
- 308
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 315 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.