Flight OddsDelta Air Lines · Washington, DC to Salt Lake City, UT · 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 DCA → SLC, the one it has flown most recently. The others are linked under “Other routes”.
How often is DL820 on time?
Across 365 flights on DCA → SLC from 2025-07-01 to 2026-06-30, DL820 arrived within 15 minutes of schedule 75% of the time. The median arrival delay was +2 min, and the worst 10% of flights arrived +54 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 | 270 | 75% |
| 16-30 min | 38 | 10% |
| 31-60 min | 20 | 6% |
| 61-120 min | 17 | 5% |
| 2+ hrs | 17 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 58% | +96 min |
| 2025-08 | 31 | 87% | +1 min |
| 2025-09 | 30 | 77% | +12 min |
| 2025-10 | 31 | 77% | +7 min |
| 2025-11 | 30 | 90% | +3 min |
| 2025-12 | 31 | 81% | +7 min |
| 2026-01 | 30 | 63% | +16 min |
| 2026-02 | 26 | 81% | +7 min |
| 2026-03 | 31 | 74% | +14 min |
| 2026-04 | 30 | 70% | +6 min |
| 2026-05 | 31 | 77% | +7 min |
| 2026-06 | 30 | 60% | +36 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 52 | 77% |
| Tue | 53 | 77% |
| Wed | 52 | 63% |
| Thu | 52 | 71% |
| Fri | 52 | 75% |
| Sat | 51 | 80% |
| Sun | 50 | 78% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…