Flight OddsDL623 ATL → SEA
Delta Air Lines · Atlanta, GA to Seattle, WA · 37 flights observed, 2025-07-01 to 2025-08-09 · 2,182 mi
DL623 covers more than one route in the data window — the stats below are for ATL → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
69%
Median delay
-5 min
90th percentile
+94 min
Cancellation rate
3%
How often is DL623 on time?
Across 37 flights on ATL → SEA from 2025-07-01 to 2025-08-09, DL623 arrived within 15 minutes of schedule 69% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +94 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 25 | 69% |
| 16-30 min | 4 | 11% |
| 31-60 min | 2 | 6% |
| 61-120 min | 2 | 6% |
| 2+ hrs | 3 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 70% | +18 min |
| 2025-08 | 6 | 67% | +18 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 50% |
| Tue | 6 | 67% |
| Wed | 6 | 83% |
| Thu | 4 | 100% |
| Fri | 5 | 40% |
| Sat | 6 | 100% |
| Sun | 5 | 40% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…