Flight OddsDL1178 ORD → ATL
Delta Air Lines · Chicago, IL to Atlanta, GA · 347 flights observed, 2025-07-01 to 2026-06-30 · 606 mi
DL1178 covers more than one route in the data window — the stats below are for ORD → ATL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
87%
Median delay
-12 min
90th percentile
+19 min
Cancellation rate
2%
How often is DL1178 on time?
Across 347 flights on ORD → ATL from 2025-07-01 to 2026-06-30, DL1178 arrived within 15 minutes of schedule 87% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +19 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 297 | 87% |
| 16-30 min | 22 | 6% |
| 31-60 min | 12 | 4% |
| 61-120 min | 6 | 2% |
| 2+ hrs | 3 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 93% | -8 min |
| 2025-08 | 31 | 97% | -11 min |
| 2025-09 | 30 | 93% | -12 min |
| 2025-10 | 30 | 93% | -14 min |
| 2025-11 | 27 | 85% | -3 min |
| 2025-12 | 30 | 63% | +13 min |
| 2026-01 | 24 | 88% | -12 min |
| 2026-02 | 22 | 86% | -15 min |
| 2026-03 | 27 | 89% | -1 min |
| 2026-04 | 29 | 79% | -1 min |
| 2026-05 | 30 | 87% | 0 min |
| 2026-06 | 30 | 93% | -11 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 50 | 84% |
| Tue | 52 | 87% |
| Wed | 52 | 90% |
| Thu | 51 | 94% |
| Fri | 48 | 83% |
| Sat | 40 | 93% |
| 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…