Flight OddsAS249 SFO → BOS
Alaska Airlines · San Francisco, CA to Boston, MA · 68 flights observed, 2025-07-04 to 2025-10-25 · 2,704 mi
AS249 covers more than one route in the data window — the stats below are for SFO → BOS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
79%
Median delay
-3 min
90th percentile
+65 min
Cancellation rate
1%
How often is AS249 on time?
Across 68 flights on SFO → BOS from 2025-07-04 to 2025-10-25, AS249 arrived within 15 minutes of schedule 79% of the time. The median arrival delay was -3 min, and the worst 10% of flights arrived +65 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 53 | 79% |
| 16-30 min | 3 | 4% |
| 31-60 min | 2 | 3% |
| 61-120 min | 8 | 12% |
| 2+ hrs | 1 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 28 | 93% | -4 min |
| 2025-08 | 19 | 84% | +17 min |
| 2025-10 | 20 | 55% | +26 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 10 | 80% |
| Tue | 10 | 80% |
| Wed | 9 | 67% |
| Thu | 9 | 78% |
| Fri | 9 | 78% |
| Sat | 10 | 90% |
| Sun | 10 | 80% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…