Flight OddsDL1566 ONT → SEA
Delta Air Lines · Ontario, CA to Seattle, WA · 8 flights observed, 2025-09-02 to 2025-09-10 · 956 mi
DL1566 covers more than one route in the data window — the stats below are for ONT → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
100%
Median delay
-19 min
90th percentile
+0 min
Cancellation rate
0%
How often is DL1566 on time?
Across 8 flights on ONT → SEA from 2025-09-02 to 2025-09-10, DL1566 arrived within 15 minutes of schedule 100% of the time. The median arrival delay was -19 min, and the worst 10% of flights arrived +0 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 | 8 | 100% |
| 16-30 min | 0 | 0% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-09 | 8 | 100% | -12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | 2 | 100% |
| Wed | 2 | 100% |
| Thu | 1 | 100% |
| Fri | 1 | 100% |
| Sat | 1 | 100% |
| Sun | 1 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…