Flight OddsAS215 BOS → SEA
Alaska Airlines · Boston, MA to Seattle, WA · 85 flights observed, 2025-11-21 to 2026-05-12 · 2,496 mi
AS215 covers more than one route in the data window — the stats below are for BOS → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
64%
Median delay
+7 min
90th percentile
+55 min
Cancellation rate
0%
How often is AS215 on time?
Across 85 flights on BOS → SEA from 2025-11-21 to 2026-05-12, AS215 arrived within 15 minutes of schedule 64% of the time. The median arrival delay was +7 min, and the worst 10% of flights arrived +55 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 | 54 | 64% |
| 16-30 min | 11 | 13% |
| 31-60 min | 13 | 15% |
| 61-120 min | 6 | 7% |
| 2+ hrs | 1 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-11 | 9 | 67% | +3 min |
| 2025-12 | 14 | 29% | +38 min |
| 2026-01 | 6 | 33% | +74 min |
| 2026-03 | 14 | 36% | +18 min |
| 2026-04 | 30 | 87% | -4 min |
| 2026-05 | 12 | 92% | -7 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 13 | 77% |
| Tue | 12 | 58% |
| Wed | 11 | 73% |
| Thu | 11 | 55% |
| Fri | 13 | 69% |
| Sat | 12 | 50% |
| Sun | 13 | 62% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…