Flight OddsDL3818 PDX → SEA
Delta Air Lines · Portland, OR to Seattle, WA · 318 flights observed, 2025-07-01 to 2026-06-30 · 129 mi
DL3818 covers more than one route in the data window — the stats below are for PDX → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
91%
Median delay
-12 min
90th percentile
+14 min
Cancellation rate
0%
How often is DL3818 on time?
Across 318 flights on PDX → SEA from 2025-07-01 to 2026-06-30, DL3818 arrived within 15 minutes of schedule 91% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +14 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 | 289 | 91% |
| 16-30 min | 18 | 6% |
| 31-60 min | 4 | 1% |
| 61-120 min | 5 | 2% |
| 2+ hrs | 1 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 87% | -1 min |
| 2025-08 | 31 | 90% | -5 min |
| 2025-09 | 30 | 93% | -5 min |
| 2025-10 | 31 | 90% | -8 min |
| 2025-11 | 30 | 97% | -13 min |
| 2025-12 | 19 | 89% | -4 min |
| 2026-01 | 27 | 93% | -7 min |
| 2026-02 | 28 | 96% | -12 min |
| 2026-03 | 30 | 90% | -5 min |
| 2026-04 | 30 | 87% | +15 min |
| 2026-05 | 6 | 100% | -9 min |
| 2026-06 | 24 | 88% | -9 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 46 | 87% |
| Tue | 47 | 100% |
| Wed | 46 | 96% |
| Thu | 45 | 87% |
| Fri | 44 | 86% |
| Sat | 44 | 89% |
| Sun | 45 | 93% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…