Flight OddsIAD → SLC Delta Air Lines
Delta Air Lines · Washington, DC to Salt Lake City, UT · 364 flights, 2025-07-01 to 2026-06-30 · aggregated across 1 flight number
On-time arrival
84%
Median delay
-5 min
90th percentile
+27 min
Cancellation rate
2%
How on-time is Delta Air Lines from IAD to SLC?
Across every Delta Air Lines flight number on IAD → SLC (364 flights, 2025-07-01 to 2026-06-30), 84% arrived within 15 minutes of schedule. Median arrival delay -5 min; the worst 10% ran +27 min or later. 2% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 302 | 84% |
| 16-30 min | 21 | 6% |
| 31-60 min | 13 | 4% |
| 61-120 min | 8 | 2% |
| 2+ hrs | 14 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 84% | +6 min |
| 2025-08 | 31 | 94% | +1 min |
| 2025-09 | 30 | 93% | -2 min |
| 2025-10 | 31 | 90% | +3 min |
| 2025-11 | 29 | 69% | +35 min |
| 2025-12 | 30 | 70% | +14 min |
| 2026-01 | 29 | 76% | +35 min |
| 2026-02 | 26 | 73% | +29 min |
| 2026-03 | 30 | 83% | 0 min |
| 2026-04 | 30 | 90% | +7 min |
| 2026-05 | 31 | 94% | -4 min |
| 2026-06 | 30 | 93% | -3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 49 | 90% |
| Tue | 52 | 83% |
| Wed | 52 | 87% |
| Thu | 50 | 84% |
| Fri | 52 | 83% |
| Sat | 52 | 81% |
| Sun | 51 | 84% |
DL flight numbers on IAD → SLC
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…