Flight OddsONT → SEA Alaska Airlines
Alaska Airlines · Ontario, CA to Seattle, WA · 1,269 flights, 2025-07-01 to 2026-06-30 · aggregated across 19 flight numbers
On-time arrival
82%
Median delay
-4 min
90th percentile
+32 min
Cancellation rate
2%
How on-time is Alaska Airlines from ONT to SEA?
Across every Alaska Airlines flight number on ONT → SEA (1,269 flights, 2025-07-01 to 2026-06-30), 82% arrived within 15 minutes of schedule. Median arrival delay -4 min; the worst 10% ran +32 min or later. 2% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 1,019 | 82% |
| 16-30 min | 93 | 8% |
| 31-60 min | 75 | 6% |
| 61-120 min | 33 | 3% |
| 2+ hrs | 19 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 140 | 74% | +13 min |
| 2025-08 | 130 | 81% | +6 min |
| 2025-09 | 104 | 84% | +1 min |
| 2025-10 | 92 | 77% | +6 min |
| 2025-11 | 104 | 81% | +4 min |
| 2025-12 | 93 | 82% | +3 min |
| 2026-01 | 86 | 85% | +2 min |
| 2026-02 | 79 | 95% | -6 min |
| 2026-03 | 89 | 85% | -2 min |
| 2026-04 | 91 | 88% | -8 min |
| 2026-05 | 114 | 87% | -1 min |
| 2026-06 | 117 | 77% | +3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 192 | 83% |
| Tue | 175 | 85% |
| Wed | 166 | 84% |
| Thu | 189 | 78% |
| Fri | 181 | 79% |
| Sat | 145 | 84% |
| Sun | 191 | 83% |
AS flight numbers on ONT → SEA
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…