Flight OddsSEA → SLC Delta Air Lines
Delta Air Lines · Seattle, WA to Salt Lake City, UT · 2,219 flights, 2025-07-01 to 2026-06-30 · aggregated across 15 flight numbers
On-time arrival
87%
Median delay
-9 min
90th percentile
+21 min
Cancellation rate
1%
How on-time is Delta Air Lines from SEA to SLC?
Across every Delta Air Lines flight number on SEA → SLC (2,219 flights, 2025-07-01 to 2026-06-30), 87% arrived within 15 minutes of schedule. Median arrival delay -9 min; the worst 10% ran +21 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 1,927 | 87% |
| 16-30 min | 118 | 5% |
| 31-60 min | 68 | 3% |
| 61-120 min | 57 | 3% |
| 2+ hrs | 35 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 200 | 84% | +6 min |
| 2025-08 | 197 | 85% | +0 min |
| 2025-09 | 193 | 93% | -6 min |
| 2025-10 | 200 | 89% | +0 min |
| 2025-11 | 168 | 92% | -6 min |
| 2025-12 | 164 | 81% | +4 min |
| 2026-01 | 165 | 85% | +1 min |
| 2026-02 | 161 | 84% | -2 min |
| 2026-03 | 176 | 87% | -1 min |
| 2026-04 | 176 | 91% | -3 min |
| 2026-05 | 206 | 89% | -5 min |
| 2026-06 | 199 | 88% | -2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 328 | 88% |
| Tue | 312 | 89% |
| Wed | 307 | 87% |
| Thu | 327 | 85% |
| Fri | 324 | 86% |
| Sat | 282 | 88% |
| Sun | 325 | 89% |
DL flight numbers on SEA → SLC
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…