Flight OddsWN3661 SMF → ONT
Southwest Airlines · Sacramento, CA to Ontario, CA · 22 flights observed, 2026-01-11 to 2026-03-02 · 390 mi
WN3661 covers more than one route in the data window — the stats below are for SMF → ONT, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
86%
Median delay
-10 min
90th percentile
+44 min
Cancellation rate
0%
How often is WN3661 on time?
Across 22 flights on SMF → ONT from 2026-01-11 to 2026-03-02, WN3661 arrived within 15 minutes of schedule 86% of the time. The median arrival delay was -10 min, and the worst 10% of flights arrived +44 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 | 19 | 86% |
| 16-30 min | 0 | 0% |
| 31-60 min | 1 | 5% |
| 61-120 min | 1 | 5% |
| 2+ hrs | 1 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 5 | 80% | +8 min |
| 2026-02 | 15 | 87% | +9 min |
| 2026-03 | 2 | 100% | -20 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 80% |
| Tue | 1 | 0% |
| Wed | No data | — |
| Thu | 5 | 100% |
| Fri | 5 | 100% |
| Sat | No data | — |
| Sun | 6 | 83% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…