Flight OddsDelta Air Lines · Salt Lake City, UT to Washington, DC · 365 flights observed, 2025-07-01 to 2026-06-30 · 1,851 mi
DL820 covers more than one route in the data window — the stats below are for SLC → DCA, the one it has flown most recently. The others are linked under “Other routes”.
How often is DL820 on time?
Across 365 flights on SLC → DCA from 2025-07-01 to 2026-06-30, DL820 arrived within 15 minutes of schedule 86% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +23 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 | 305 | 86% |
| 16-30 min | 23 | 6% |
| 31-60 min | 19 | 5% |
| 61-120 min | 5 | 1% |
| 2+ hrs | 2 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 25 | 92% | -1 min |
| 2025-08 | 31 | 84% | -2 min |
| 2025-09 | 29 | 90% | +4 min |
| 2025-10 | 31 | 90% | -3 min |
| 2025-11 | 30 | 87% | -6 min |
| 2025-12 | 31 | 94% | -13 min |
| 2026-01 | 30 | 70% | +4 min |
| 2026-02 | 26 | 81% | -2 min |
| 2026-03 | 31 | 84% | -5 min |
| 2026-04 | 30 | 87% | -3 min |
| 2026-05 | 31 | 94% | -11 min |
| 2026-06 | 29 | 83% | +0 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 52 | 79% |
| Tue | 51 | 92% |
| Wed | 52 | 83% |
| Thu | 51 | 78% |
| Fri | 50 | 84% |
| Sat | 48 | 94% |
| Sun | 50 | 94% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…