Flight Reliability
DL 923 · Delta Air Lines
Boston → Atlanta (BOS–ATL)
91
Nerd Approved
WanderNerd Reliability Score
- 88%
- Arrive within 15 minutes
- 0 min
- Average arrival delay
- 1.2%
- Cancelled
- 13 min early
- Median arrival delay
Based on 322 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
DL 923 arrived on time 97% of the time on Saturdays and just 79% on Fridays. That gap is worth planning around.
Better than the BOS–ATL route average.
DL 923 arrived on time 88% of the time, versus 79% across the BOS–ATL route.
A bit ahead of the Delta Air Lines network.
DL 923 arrived on time 88% of the time, versus 81% across the Delta Air Lines network.
Trending in the right direction.
DL 923 arrived on time 91% of the time over the last three months in the data, compared with 83% in the three months before that.
The breakdown
- Mon85%(47 flights)
- Tue81%(48 flights)
- Wed94%(47 flights)
- Thu92%(48 flights)
- Fri79%(48 flights)
- Sat97%(29 flights)
- Sun90%(51 flights)
94%
May
Jun 92% → May 94% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 92% | 26 |
| July 2025 | 89% | 26 |
| August 2025 | 95% | 20 |
| September 2025 | 88% | 17 |
| October 2025 | 86% | 29 |
| November 2025 | 83% | 29 |
| December 2025 | 75% | 28 |
| January 2026 | 79% | 28 |
| February 2026 | 96% | 24 |
| March 2026 | 90% | 30 |
| April 2026 | 90% | 30 |
| May 2026 | 94% | 31 |
- Departures on time
- 88%
- Diverted
- 0%
- Flights flown
- 318
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 322 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.