Flight OddsDL3953 SEA → PDX
Delta Air Lines · Seattle, WA to Portland, OR · 365 flights observed, 2025-07-01 to 2026-06-30 · 129 mi
DL3953 covers more than one route in the data window — the stats below are for SEA → PDX, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
94%
Median delay
-15 min
90th percentile
+4 min
Cancellation rate
0%
How often is DL3953 on time?
Across 365 flights on SEA → PDX from 2025-07-01 to 2026-06-30, DL3953 arrived within 15 minutes of schedule 94% of the time. The median arrival delay was -15 min, and the worst 10% of flights arrived +4 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 341 | 94% |
| 16-30 min | 9 | 2% |
| 31-60 min | 5 | 1% |
| 61-120 min | 8 | 2% |
| 2+ hrs | 1 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 94% | -11 min |
| 2025-08 | 31 | 100% | -12 min |
| 2025-09 | 30 | 100% | -19 min |
| 2025-10 | 31 | 100% | -17 min |
| 2025-11 | 29 | 97% | -12 min |
| 2025-12 | 31 | 84% | -5 min |
| 2026-01 | 31 | 87% | -7 min |
| 2026-02 | 28 | 96% | -11 min |
| 2026-03 | 31 | 90% | +5 min |
| 2026-04 | 30 | 97% | -15 min |
| 2026-05 | 31 | 97% | -14 min |
| 2026-06 | 30 | 83% | -1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 52 | 88% |
| Tue | 53 | 94% |
| Wed | 52 | 92% |
| Thu | 52 | 96% |
| Fri | 52 | 98% |
| Sat | 52 | 94% |
| Sun | 51 | 92% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…