Flight OddsSEA → DCA Delta Air Lines
Delta Air Lines · Seattle, WA to Washington, DC · 365 flights, 2025-07-01 to 2026-06-30 · aggregated across 2 flight numbers
On-time arrival
92%
Median delay
-12 min
90th percentile
+11 min
Cancellation rate
3%
How on-time is Delta Air Lines from SEA to DCA?
Across every Delta Air Lines flight number on SEA → DCA (365 flights, 2025-07-01 to 2026-06-30), 92% arrived within 15 minutes of schedule. Median arrival delay -12 min; the worst 10% ran +11 min or later. 3% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 325 | 92% |
| 16-30 min | 9 | 3% |
| 31-60 min | 7 | 2% |
| 61-120 min | 6 | 2% |
| 2+ hrs | 6 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 28 | 89% | -8 min |
| 2025-08 | 30 | 97% | -7 min |
| 2025-09 | 30 | 70% | +27 min |
| 2025-10 | 31 | 94% | -8 min |
| 2025-11 | 30 | 90% | +30 min |
| 2025-12 | 29 | 90% | -4 min |
| 2026-01 | 30 | 90% | -8 min |
| 2026-02 | 27 | 100% | -17 min |
| 2026-03 | 28 | 100% | -17 min |
| 2026-04 | 30 | 93% | -2 min |
| 2026-05 | 31 | 97% | -10 min |
| 2026-06 | 29 | 97% | -12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 51 | 90% |
| Tue | 50 | 96% |
| Wed | 51 | 96% |
| Thu | 50 | 76% |
| Fri | 51 | 96% |
| Sat | 51 | 98% |
| Sun | 49 | 92% |
DL flight numbers on SEA → DCA
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…