Flight OddsAS307 BOS → SEA
Alaska Airlines · Boston, MA to Seattle, WA · 42 flights observed, 2025-10-04 to 2026-01-06 · 2,496 mi
AS307 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
49%
Median delay
+17 min
90th percentile
+62 min
Cancellation rate
2%
How often is AS307 on time?
Across 42 flights on BOS → SEA from 2025-10-04 to 2026-01-06, AS307 arrived within 15 minutes of schedule 49% of the time. The median arrival delay was +17 min, and the worst 10% of flights arrived +62 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 19 | 49% |
| 16-30 min | 6 | 15% |
| 31-60 min | 10 | 26% |
| 61-120 min | 2 | 5% |
| 2+ hrs | 2 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 21 | 67% | +13 min |
| 2025-12 | 12 | 25% | +34 min |
| 2026-01 | 6 | 33% | +21 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 60% |
| Tue | 5 | 40% |
| Wed | 5 | 40% |
| Thu | 6 | 33% |
| Fri | 5 | 40% |
| Sat | 7 | 57% |
| Sun | 6 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…