Flight OddsSEA → HLN Alaska Airlines
Alaska Airlines · Seattle, WA to Helena, MT · 364 flights, 2025-07-01 to 2026-06-30 · aggregated across 7 flight numbers
On-time arrival
85%
Median delay
-9 min
90th percentile
+26 min
Cancellation rate
1%
How on-time is Alaska Airlines from SEA to HLN?
Across every Alaska Airlines flight number on SEA → HLN (364 flights, 2025-07-01 to 2026-06-30), 85% arrived within 15 minutes of schedule. Median arrival delay -9 min; the worst 10% ran +26 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 307 | 85% |
| 16-30 min | 23 | 6% |
| 31-60 min | 19 | 5% |
| 61-120 min | 9 | 2% |
| 2+ hrs | 3 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 77% | +8 min |
| 2025-08 | 31 | 81% | +5 min |
| 2025-09 | 30 | 83% | -2 min |
| 2025-10 | 31 | 90% | -6 min |
| 2025-11 | 29 | 86% | -9 min |
| 2025-12 | 31 | 77% | +8 min |
| 2026-01 | 31 | 94% | -11 min |
| 2026-02 | 28 | 93% | -9 min |
| 2026-03 | 29 | 97% | -16 min |
| 2026-04 | 30 | 97% | -6 min |
| 2026-05 | 30 | 73% | +7 min |
| 2026-06 | 30 | 73% | +14 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 52 | 87% |
| Tue | 53 | 89% |
| Wed | 51 | 84% |
| Thu | 51 | 80% |
| Fri | 51 | 82% |
| Sat | 51 | 84% |
| Sun | 52 | 88% |
AS flight numbers on SEA → HLN
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…