Flight Reliability
DL 2691 · Delta Air Lines
GRB → Atlanta (GRB–ATL)
88
Pretty Reliable
WanderNerd Reliability Score
- 90%
- Arrive within 15 minutes
- 1 min
- Average arrival delay
- 1.9%
- Cancelled
- 12 min early
- Median arrival delay
Based on 364 historical flights. Data through May 2026.
What the data says
Tuesday has been the better bet.
A small edge: 94% on time on Tuesdays against 88% on Sundays.
Better than the Delta Air Lines network average.
DL 2691 arrived on time 90% of the time, versus 81% across the Delta Air Lines network.
Ticking up lately.
DL 2691 arrived on time 87% of the time over the last three months in the data, compared with 84% in the three months before that.
The breakdown
- Mon88%(51 flights)
- Tue94%(48 flights)
- Wed90%(52 flights)
- Thu90%(51 flights)
- Fri89%(52 flights)
- Sat88%(51 flights)
- Sun88%(50 flights)
90%
May
Jun 90% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 90% | 29 |
| July 2025 | 94% | 31 |
| August 2025 | 97% | 31 |
| September 2025 | 100% | 30 |
| October 2025 | 90% | 31 |
| November 2025 | 90% | 29 |
| December 2025 | 70% | 30 |
| January 2026 | 90% | 30 |
| February 2026 | 93% | 27 |
| March 2026 | 75% | 28 |
| April 2026 | 96% | 28 |
| May 2026 | 90% | 31 |
- Departures on time
- 91%
- Diverted
- 0.5%
- Flights flown
- 355
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 364 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.