Flight OddsPDX → SEA Delta Air Lines
Delta Air Lines · Portland, OR to Seattle, WA · 2,650 flights, 2025-07-01 to 2026-06-30 · aggregated across 25 flight numbers
On-time arrival
89%
Median delay
-12 min
90th percentile
+18 min
Cancellation rate
0%
How on-time is Delta Air Lines from PDX to SEA?
Across every Delta Air Lines flight number on PDX → SEA (2,650 flights, 2025-07-01 to 2026-06-30), 89% arrived within 15 minutes of schedule. Median arrival delay -12 min; the worst 10% ran +18 min or later. 0% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 2,341 | 89% |
| 16-30 min | 144 | 5% |
| 31-60 min | 76 | 3% |
| 61-120 min | 45 | 2% |
| 2+ hrs | 36 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 240 | 85% | +3 min |
| 2025-08 | 238 | 88% | -4 min |
| 2025-09 | 227 | 89% | -7 min |
| 2025-10 | 239 | 93% | -9 min |
| 2025-11 | 197 | 91% | -10 min |
| 2025-12 | 198 | 86% | -2 min |
| 2026-01 | 205 | 88% | -3 min |
| 2026-02 | 190 | 95% | -9 min |
| 2026-03 | 208 | 87% | +4 min |
| 2026-04 | 224 | 88% | -2 min |
| 2026-05 | 242 | 86% | -6 min |
| 2026-06 | 234 | 88% | -4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 385 | 88% |
| Tue | 392 | 90% |
| Wed | 384 | 90% |
| Thu | 381 | 84% |
| Fri | 379 | 90% |
| Sat | 340 | 90% |
| Sun | 381 | 88% |
DL flight numbers on PDX → SEA
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…