Flight OddsBOS → SLC Delta Air Lines
Delta Air Lines · Boston, MA to Salt Lake City, UT · 1,083 flights, 2025-07-01 to 2026-06-30 · aggregated across 8 flight numbers
On-time arrival
78%
Median delay
-4 min
90th percentile
+39 min
Cancellation rate
1%
How on-time is Delta Air Lines from BOS to SLC?
Across every Delta Air Lines flight number on BOS → SLC (1,083 flights, 2025-07-01 to 2026-06-30), 78% arrived within 15 minutes of schedule. Median arrival delay -4 min; the worst 10% ran +39 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 837 | 78% |
| 16-30 min | 96 | 9% |
| 31-60 min | 65 | 6% |
| 61-120 min | 33 | 3% |
| 2+ hrs | 36 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 92 | 76% | +11 min |
| 2025-08 | 91 | 88% | +0 min |
| 2025-09 | 90 | 88% | +2 min |
| 2025-10 | 91 | 80% | +4 min |
| 2025-11 | 87 | 83% | -1 min |
| 2025-12 | 91 | 67% | +16 min |
| 2026-01 | 80 | 71% | +19 min |
| 2026-02 | 76 | 79% | +10 min |
| 2026-03 | 95 | 80% | +6 min |
| 2026-04 | 92 | 84% | +4 min |
| 2026-05 | 92 | 71% | +9 min |
| 2026-06 | 90 | 74% | +14 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 150 | 85% |
| Tue | 147 | 80% |
| Wed | 142 | 80% |
| Thu | 152 | 78% |
| Fri | 152 | 85% |
| Sat | 171 | 71% |
| Sun | 153 | 71% |
DL flight numbers on BOS → SLC
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…