Flight OddsSFO → BOS Alaska Airlines
Alaska Airlines · San Francisco, CA to Boston, MA · 234 flights, 2025-07-01 to 2026-01-06 · aggregated across 5 flight numbers
On-time arrival
79%
Median delay
-3 min
90th percentile
+30 min
Cancellation rate
0%
How on-time is Alaska Airlines from SFO to BOS?
Across every Alaska Airlines flight number on SFO → BOS (234 flights, 2025-07-01 to 2026-01-06), 79% arrived within 15 minutes of schedule. Median arrival delay -3 min; the worst 10% ran +30 min or later. 0% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 184 | 79% |
| 16-30 min | 26 | 11% |
| 31-60 min | 4 | 2% |
| 61-120 min | 12 | 5% |
| 2+ hrs | 7 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 61 | 74% | +9 min |
| 2025-08 | 50 | 80% | +14 min |
| 2025-09 | 30 | 83% | +9 min |
| 2025-10 | 29 | 66% | +17 min |
| 2025-11 | 26 | 92% | -14 min |
| 2025-12 | 31 | 90% | -14 min |
| 2026-01 | 6 | 50% | +10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 34 | 82% |
| Tue | 36 | 81% |
| Wed | 33 | 82% |
| Thu | 33 | 64% |
| Fri | 31 | 81% |
| Sat | 32 | 91% |
| Sun | 34 | 74% |
AS flight numbers on SFO → BOS
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…