Flight Reliability
DL 3165 · Delta Air Lines
Columbus → Atlanta (CMH–ATL)93% of its flights flew this route. The rest (ATL–SDF, SDF–ATL) are included in these numbers.
91
Nerd Approved
WanderNerd Reliability Score
- 89%
- Arrive within 15 minutes
- 1 min early
- Average arrival delay
- 1.0%
- Cancelled
- 13 min early
- Median arrival delay
Based on 193 historical flights. Data through May 2026.
What the data says
Morning flights do better here.
DL 3165 departing between 9 AM–12 PM arrived on time 96% of the time, versus 69% between 12–3 PM.
Sunday scaries are real for this one.
DL 3165 arrived on time 100% of the time on Thursdays and just 75% on Sundays. That gap is worth planning around.
Better than the Delta Air Lines network average.
DL 3165 arrived on time 89% of the time, versus 81% across the Delta Air Lines network.
The breakdown
- Mon93%(27 flights)
- Tue89%(27 flights)
- Wed93%(27 flights)
- Thu100%(28 flights)
- Fri93%(28 flights)
- Sat80%(25 flights)
- Sun75%(28 flights)
- 6–9 AM90%(152 flights)
- 9 AM–12 PM96%(24 flights)
- 12–3 PM69%(13 flights)
- 3–6 PM—(1 flights)
84%
May
Jun 81% → May 84% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 81% | 36 |
| July 2025 | 90% | 31 |
| August 2025 | 97% | 30 |
| September 2025 | 86% | 29 |
| October 2025 | 97% | 31 |
| May 2026 | 84% | 25 |
- Departures on time
- 90%
- Diverted
- 0.5%
- Flights flown
- 190
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 193 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.