Flight Reliability
DL 2850 · Delta Air Lines
Atlanta → Charleston (ATL–CHS)
76
Usually Fine
WanderNerd Reliability Score
- 78%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 2.5%
- Cancelled
- 3 min early
- Median arrival delay
Based on 364 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
DL 2850 arrived on time 88% of the time on Mondays and just 69% on Sundays. That gap is worth planning around.
A bit behind the ATL–CHS route.
DL 2850 arrived on time 78% of the time, versus 83% across the ATL–CHS route.
A bit behind the Delta Air Lines network.
DL 2850 arrived on time 78% of the time, versus 81% across the Delta Air Lines network.
Trending in the right direction.
DL 2850 arrived on time 86% of the time over the last three months in the data, compared with 79% in the three months before that.
The breakdown
- Mon88%(51 flights)
- Tue80%(51 flights)
- Wed81%(52 flights)
- Thu78%(51 flights)
- Fri70%(50 flights)
- Sat79%(48 flights)
- Sun69%(52 flights)
83%
May
Jun 57% → May 83% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 57% | 28 |
| July 2025 | 48% | 31 |
| August 2025 | 81% | 31 |
| September 2025 | 90% | 30 |
| October 2025 | 81% | 31 |
| November 2025 | 85% | 27 |
| December 2025 | 65% | 31 |
| January 2026 | 83% | 30 |
| February 2026 | 89% | 28 |
| March 2026 | 82% | 28 |
| April 2026 | 93% | 30 |
| May 2026 | 83% | 30 |
- Departures on time
- 81%
- Diverted
- 0%
- 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.