Flight OddsAS678 SLC → SEA
Alaska Airlines · Salt Lake City, UT to Seattle, WA · 51 flights observed, 2026-01-08 to 2026-03-17 · 689 mi
AS678 covers more than one route in the data window — the stats below are for SLC → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
84%
Median delay
-10 min
90th percentile
+29 min
Cancellation rate
4%
How often is AS678 on time?
Across 51 flights on SLC → SEA from 2026-01-08 to 2026-03-17, AS678 arrived within 15 minutes of schedule 84% of the time. The median arrival delay was -10 min, and the worst 10% of flights arrived +29 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 41 | 84% |
| 16-30 min | 3 | 6% |
| 31-60 min | 3 | 6% |
| 61-120 min | 2 | 4% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 17 | 94% | -9 min |
| 2026-02 | 20 | 85% | -4 min |
| 2026-03 | 12 | 67% | +8 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 10 | 80% |
| Tue | 1 | 100% |
| Wed | No data | — |
| Thu | 10 | 80% |
| Fri | 9 | 89% |
| Sat | 10 | 80% |
| Sun | 9 | 89% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…