Flight OddsDL1178 ATL → ORD
Delta Air Lines · Atlanta, GA to Chicago, IL · 332 flights observed, 2025-07-06 to 2026-06-26 · 606 mi
DL1178 covers more than one route in the data window — the stats below are for ATL → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
88%
Median delay
-4 min
90th percentile
+21 min
Cancellation rate
2%
How often is DL1178 on time?
Across 332 flights on ATL → ORD from 2025-07-06 to 2026-06-26, DL1178 arrived within 15 minutes of schedule 88% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +21 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 | 285 | 88% |
| 16-30 min | 13 | 4% |
| 31-60 min | 19 | 6% |
| 61-120 min | 6 | 2% |
| 2+ hrs | 1 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 26 | 92% | -5 min |
| 2025-08 | 31 | 90% | -6 min |
| 2025-09 | 30 | 93% | -4 min |
| 2025-10 | 30 | 90% | -1 min |
| 2025-11 | 26 | 88% | +1 min |
| 2025-12 | 30 | 73% | +13 min |
| 2026-01 | 24 | 83% | +4 min |
| 2026-02 | 22 | 91% | -1 min |
| 2026-03 | 27 | 93% | +1 min |
| 2026-04 | 29 | 79% | +7 min |
| 2026-05 | 26 | 85% | +3 min |
| 2026-06 | 23 | 100% | -6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 49 | 92% |
| Tue | 50 | 78% |
| Wed | 51 | 88% |
| Thu | 50 | 92% |
| Fri | 47 | 89% |
| Sat | 32 | 84% |
| Sun | 45 | 91% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…