Flight OddsSLC → BOS Delta Air Lines
Delta Air Lines · Salt Lake City, UT to Boston, MA · 1,083 flights, 2025-07-01 to 2026-06-30 · aggregated across 4 flight numbers
On-time arrival
84%
Median delay
-9 min
90th percentile
+28 min
Cancellation rate
1%
How on-time is Delta Air Lines from SLC to BOS?
Across every Delta Air Lines flight number on SLC → BOS (1,083 flights, 2025-07-01 to 2026-06-30), 84% arrived within 15 minutes of schedule. Median arrival delay -9 min; the worst 10% ran +28 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 894 | 84% |
| 16-30 min | 71 | 7% |
| 31-60 min | 45 | 4% |
| 61-120 min | 33 | 3% |
| 2+ hrs | 25 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 92 | 79% | +3 min |
| 2025-08 | 93 | 88% | 0 min |
| 2025-09 | 90 | 78% | +10 min |
| 2025-10 | 92 | 75% | +9 min |
| 2025-11 | 87 | 89% | -8 min |
| 2025-12 | 91 | 80% | +0 min |
| 2026-01 | 80 | 84% | -3 min |
| 2026-02 | 75 | 87% | -7 min |
| 2026-03 | 95 | 83% | -6 min |
| 2026-04 | 91 | 84% | +2 min |
| 2026-05 | 92 | 93% | -9 min |
| 2026-06 | 90 | 86% | -4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 150 | 81% |
| Tue | 148 | 81% |
| Wed | 145 | 86% |
| Thu | 151 | 82% |
| Fri | 152 | 85% |
| Sat | 171 | 91% |
| Sun | 151 | 79% |
DL flight numbers on SLC → BOS
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…