Flight OddsHLN → SEA Alaska Airlines
Alaska Airlines · Helena, MT to Seattle, WA · 364 flights, 2025-07-01 to 2026-06-30 · aggregated across 7 flight numbers
On-time arrival
76%
Median delay
-1 min
90th percentile
+41 min
Cancellation rate
1%
How on-time is Alaska Airlines from HLN to SEA?
Across every Alaska Airlines flight number on HLN → SEA (364 flights, 2025-07-01 to 2026-06-30), 76% arrived within 15 minutes of schedule. Median arrival delay -1 min; the worst 10% ran +41 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 274 | 76% |
| 16-30 min | 30 | 8% |
| 31-60 min | 36 | 10% |
| 61-120 min | 15 | 4% |
| 2+ hrs | 5 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 68% | +13 min |
| 2025-08 | 31 | 55% | +15 min |
| 2025-09 | 30 | 73% | +8 min |
| 2025-10 | 31 | 87% | +8 min |
| 2025-11 | 29 | 79% | +7 min |
| 2025-12 | 30 | 67% | +16 min |
| 2026-01 | 31 | 90% | -18 min |
| 2026-02 | 28 | 89% | -6 min |
| 2026-03 | 29 | 83% | -1 min |
| 2026-04 | 30 | 83% | +5 min |
| 2026-05 | 30 | 70% | +18 min |
| 2026-06 | 30 | 70% | +17 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 52 | 77% |
| Tue | 53 | 81% |
| Wed | 52 | 73% |
| Thu | 51 | 67% |
| Fri | 49 | 78% |
| Sat | 51 | 76% |
| Sun | 52 | 81% |
AS flight numbers on HLN → SEA
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…