Flight OddsDL541 SEA → IAD
Delta Air Lines · Seattle, WA to Washington, DC · 349 flights observed, 2025-07-01 to 2026-06-30 · 2,305 mi
DL541 covers more than one route in the data window — the stats below are for SEA → IAD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
78%
Median delay
-6 min
90th percentile
+57 min
Cancellation rate
1%
How often is DL541 on time?
Across 349 flights on SEA → IAD from 2025-07-01 to 2026-06-30, DL541 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +57 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 267 | 78% |
| 16-30 min | 25 | 7% |
| 31-60 min | 19 | 6% |
| 61-120 min | 22 | 6% |
| 2+ hrs | 11 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 77% | +2 min |
| 2025-08 | 31 | 74% | +6 min |
| 2025-09 | 30 | 77% | +4 min |
| 2025-10 | 31 | 81% | +33 min |
| 2025-11 | 29 | 83% | +11 min |
| 2025-12 | 19 | 68% | +17 min |
| 2026-01 | 26 | 73% | +26 min |
| 2026-02 | 27 | 78% | +2 min |
| 2026-03 | 30 | 67% | +15 min |
| 2026-04 | 29 | 93% | -1 min |
| 2026-05 | 31 | 87% | -8 min |
| 2026-06 | 30 | 70% | +6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 49 | 73% |
| Tue | 51 | 76% |
| Wed | 50 | 88% |
| Thu | 50 | 78% |
| Fri | 48 | 75% |
| Sat | 49 | 80% |
| Sun | 47 | 72% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…