Flight Reliability
DL 5279 · Delta Air Lines
Knoxville → Atlanta (TYS–ATL)97% of its flights flew this route. The rest (CLT–LGA, LGA–CLT) are included in these numbers.
69
Usually Fine
WanderNerd Reliability Score
- 76%
- Arrive within 15 minutes
- 27 min
- Average arrival delay
- 1.4%
- Cancelled
- 12 min early
- Median arrival delay
Based on 353 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
DL 5279 arrived on time 83% of the time on Sundays. On Fridays: 71%.
Lagging the TYS–ATL route.
DL 5279 arrived on time 76% of the time, versus 85% across the TYS–ATL route.
A bit behind the Delta Air Lines network.
DL 5279 arrived on time 76% of the time, versus 81% across the Delta Air Lines network.
The breakdown
- Mon76%(49 flights)
- Tue77%(52 flights)
- Wed80%(51 flights)
- Thu71%(52 flights)
- Fri71%(52 flights)
- Sat75%(44 flights)
- Sun83%(47 flights)
- 6–9 AM76%(307 flights)
- 9 AM–12 PM74%(39 flights)
- 12–3 PM—(1 flights)
68%
May
Jun 62% → May 68% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 62% | 26 |
| July 2025 | 74% | 27 |
| August 2025 | 84% | 31 |
| September 2025 | 94% | 31 |
| October 2025 | 70% | 30 |
| November 2025 | 71% | 28 |
| December 2025 | 77% | 26 |
| January 2026 | 72% | 29 |
| February 2026 | 79% | 28 |
| March 2026 | 80% | 30 |
| April 2026 | 80% | 30 |
| May 2026 | 68% | 31 |
- Departures on time
- 75%
- Diverted
- 0.3%
- Flights flown
- 347
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 353 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.