Flight OddsSEA → ORD Delta Air Lines
Delta Air Lines · Seattle, WA to Chicago, IL · 902 flights, 2025-07-01 to 2026-06-30 · aggregated across 5 flight numbers
On-time arrival
78%
Median delay
-4 min
90th percentile
+48 min
Cancellation rate
1%
How on-time is Delta Air Lines from SEA to ORD?
Across every Delta Air Lines flight number on SEA → ORD (902 flights, 2025-07-01 to 2026-06-30), 78% arrived within 15 minutes of schedule. Median arrival delay -4 min; the worst 10% ran +48 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 689 | 78% |
| 16-30 min | 67 | 8% |
| 31-60 min | 48 | 5% |
| 61-120 min | 38 | 4% |
| 2+ hrs | 37 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 86 | 84% | +3 min |
| 2025-08 | 76 | 78% | +7 min |
| 2025-09 | 72 | 85% | +12 min |
| 2025-10 | 86 | 83% | +5 min |
| 2025-11 | 76 | 68% | +25 min |
| 2025-12 | 71 | 56% | +28 min |
| 2026-01 | 57 | 70% | +26 min |
| 2026-02 | 49 | 92% | -15 min |
| 2026-03 | 56 | 79% | +5 min |
| 2026-04 | 74 | 78% | +5 min |
| 2026-05 | 91 | 81% | +1 min |
| 2026-06 | 85 | 86% | +3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 133 | 74% |
| Tue | 131 | 82% |
| Wed | 127 | 85% |
| Thu | 130 | 78% |
| Fri | 130 | 81% |
| Sat | 100 | 77% |
| Sun | 128 | 71% |
DL flight numbers on SEA → ORD
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…