Flight OddsBOS → ORD Delta Air Lines
Delta Air Lines · Boston, MA to Chicago, IL · 1,313 flights, 2025-07-01 to 2026-06-30 · aggregated across 28 flight numbers
On-time arrival
67%
Median delay
0 min
90th percentile
+80 min
Cancellation rate
4%
How on-time is Delta Air Lines from BOS to ORD?
Across every Delta Air Lines flight number on BOS → ORD (1,313 flights, 2025-07-01 to 2026-06-30), 67% arrived within 15 minutes of schedule. Median arrival delay 0 min; the worst 10% ran +80 min or later. 4% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 834 | 67% |
| 16-30 min | 117 | 9% |
| 31-60 min | 126 | 10% |
| 61-120 min | 108 | 9% |
| 2+ hrs | 68 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 108 | 65% | +19 min |
| 2025-08 | 111 | 75% | +11 min |
| 2025-09 | 106 | 58% | +28 min |
| 2025-10 | 115 | 53% | +26 min |
| 2025-11 | 105 | 63% | +23 min |
| 2025-12 | 101 | 60% | +29 min |
| 2026-01 | 89 | 64% | +14 min |
| 2026-02 | 89 | 79% | +1 min |
| 2026-03 | 102 | 64% | +31 min |
| 2026-04 | 105 | 71% | +9 min |
| 2026-05 | 116 | 77% | +12 min |
| 2026-06 | 106 | 72% | +19 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 183 | 62% |
| Tue | 196 | 70% |
| Wed | 189 | 70% |
| Thu | 179 | 71% |
| Fri | 188 | 72% |
| Sat | 138 | 62% |
| Sun | 180 | 57% |
DL flight numbers on BOS → ORD
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…