Flight OddsAS299 BOS → SEA
Alaska Airlines · Boston, MA to Seattle, WA · 34 flights observed, 2026-02-12 to 2026-03-17 · 2,496 mi
AS299 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
67%
Median delay
+1 min
90th percentile
+38 min
Cancellation rate
3%
How often is AS299 on time?
Across 34 flights on BOS → SEA from 2026-02-12 to 2026-03-17, AS299 arrived within 15 minutes of schedule 67% of the time. The median arrival delay was +1 min, and the worst 10% of flights arrived +38 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 22 | 67% |
| 16-30 min | 6 | 18% |
| 31-60 min | 3 | 9% |
| 61-120 min | 2 | 6% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-02 | 16 | 75% | -9 min |
| 2026-03 | 17 | 59% | +15 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 75% |
| Tue | 5 | 60% |
| Wed | 4 | 50% |
| Thu | 5 | 100% |
| Fri | 5 | 60% |
| Sat | 5 | 60% |
| Sun | 5 | 60% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…