Flight OddsDL1255 MDT → ATL
Delta Air Lines · Harrisburg, PA to Atlanta, GA · 349 flights observed, 2025-07-01 to 2026-06-30 · 620 mi
DL1255 covers more than one route in the data window — the stats below are for MDT → ATL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
91%
Median delay
-16 min
90th percentile
+11 min
Cancellation rate
3%
How often is DL1255 on time?
Across 349 flights on MDT → ATL from 2025-07-01 to 2026-06-30, DL1255 arrived within 15 minutes of schedule 91% of the time. The median arrival delay was -16 min, and the worst 10% of flights arrived +11 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 310 | 91% |
| 16-30 min | 12 | 4% |
| 31-60 min | 8 | 2% |
| 61-120 min | 6 | 2% |
| 2+ hrs | 4 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 97% | -17 min |
| 2025-08 | 29 | 100% | -14 min |
| 2025-09 | 30 | 93% | +1 min |
| 2025-10 | 31 | 74% | +6 min |
| 2025-11 | 30 | 90% | -12 min |
| 2025-12 | 19 | 89% | -3 min |
| 2026-01 | 25 | 92% | -6 min |
| 2026-02 | 26 | 92% | -15 min |
| 2026-03 | 31 | 84% | +12 min |
| 2026-04 | 29 | 93% | -18 min |
| 2026-05 | 29 | 97% | -16 min |
| 2026-06 | 30 | 93% | -15 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 48 | 92% |
| Tue | 49 | 92% |
| Wed | 50 | 94% |
| Thu | 50 | 90% |
| Fri | 49 | 96% |
| Sat | 47 | 94% |
| Sun | 47 | 81% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…