Flight OddsAS620 SMF → SEA
Alaska Airlines · Sacramento, CA to Seattle, WA · 79 flights observed, 2026-03-18 to 2026-06-09 · 605 mi
AS620 covers more than one route in the data window — the stats below are for SMF → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
77%
Median delay
-1 min
90th percentile
+31 min
Cancellation rate
0%
How often is AS620 on time?
Across 79 flights on SMF → SEA from 2026-03-18 to 2026-06-09, AS620 arrived within 15 minutes of schedule 77% of the time. The median arrival delay was -1 min, and the worst 10% of flights arrived +31 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 61 | 77% |
| 16-30 min | 9 | 11% |
| 31-60 min | 5 | 6% |
| 61-120 min | 2 | 3% |
| 2+ hrs | 2 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 12 | 92% | -2 min |
| 2026-04 | 27 | 70% | +7 min |
| 2026-05 | 31 | 84% | +6 min |
| 2026-06 | 9 | 56% | +19 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 12 | 92% |
| Tue | 12 | 83% |
| Wed | 12 | 75% |
| Thu | 12 | 58% |
| Fri | 12 | 67% |
| Sat | 7 | 86% |
| Sun | 12 | 83% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…