Flight Reliability
DL 1351 · Delta Air Lines
Atlanta → Pittsburgh (ATL–PIT)
78
Usually Fine
WanderNerd Reliability Score
- 79%
- Arrive within 15 minutes
- 9 min
- Average arrival delay
- 1.9%
- Cancelled
- 3 min early
- Median arrival delay
Based on 364 historical flights. Data through May 2026.
What the data says
Thursdays have been rough.
DL 1351 arrived on time 87% of the time on Tuesdays and just 71% on Thursdays. That gap is worth planning around.
A bit behind the ATL–PIT route.
DL 1351 arrived on time 79% of the time, versus 84% across the ATL–PIT route.
Slipping a little lately.
DL 1351 arrived on time 79% of the time over the last three months in the data, compared with 83% in the three months before that.
The breakdown
- Mon73%(52 flights)
- Tue87%(52 flights)
- Wed79%(52 flights)
- Thu71%(51 flights)
- Fri82%(49 flights)
- Sat84%(51 flights)
- Sun76%(49 flights)
81%
May
Jun 59% → May 81% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 59% | 29 |
| July 2025 | 73% | 30 |
| August 2025 | 83% | 30 |
| September 2025 | 90% | 29 |
| October 2025 | 81% | 31 |
| November 2025 | 72% | 29 |
| December 2025 | 73% | 30 |
| January 2026 | 83% | 30 |
| February 2026 | 93% | 27 |
| March 2026 | 73% | 30 |
| April 2026 | 83% | 30 |
| May 2026 | 81% | 31 |
- Departures on time
- 81%
- Diverted
- 0.3%
- Flights flown
- 356
- 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.