Flight OddsSLC → SEA Delta Air Lines
Delta Air Lines · Salt Lake City, UT to Seattle, WA · 2,222 flights, 2025-07-01 to 2026-06-30 · aggregated across 17 flight numbers
On-time arrival
84%
Median delay
-8 min
90th percentile
+27 min
Cancellation rate
1%
How on-time is Delta Air Lines from SLC to SEA?
Across every Delta Air Lines flight number on SLC → SEA (2,222 flights, 2025-07-01 to 2026-06-30), 84% arrived within 15 minutes of schedule. Median arrival delay -8 min; the worst 10% ran +27 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 1,854 | 84% |
| 16-30 min | 156 | 7% |
| 31-60 min | 105 | 5% |
| 61-120 min | 60 | 3% |
| 2+ hrs | 35 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 201 | 80% | +6 min |
| 2025-08 | 198 | 77% | +6 min |
| 2025-09 | 193 | 86% | -2 min |
| 2025-10 | 201 | 78% | +3 min |
| 2025-11 | 169 | 86% | -1 min |
| 2025-12 | 164 | 80% | +5 min |
| 2026-01 | 164 | 93% | -9 min |
| 2026-02 | 161 | 89% | -8 min |
| 2026-03 | 177 | 87% | +0 min |
| 2026-04 | 177 | 90% | -6 min |
| 2026-05 | 206 | 83% | 0 min |
| 2026-06 | 199 | 80% | +5 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 328 | 85% |
| Tue | 314 | 85% |
| Wed | 308 | 85% |
| Thu | 327 | 84% |
| Fri | 323 | 81% |
| Sat | 282 | 86% |
| Sun | 328 | 81% |
DL flight numbers on SLC → SEA
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…