Flight OddsUA2001 SFO → BOS
United Airlines · San Francisco, CA to Boston, MA · 64 flights observed, 2026-03-29 to 2026-06-30 · 2,704 mi
UA2001 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
89%
Median delay
-21 min
90th percentile
+24 min
Cancellation rate
0%
How often is UA2001 on time?
Across 64 flights on SFO → BOS from 2026-03-29 to 2026-06-30, UA2001 arrived within 15 minutes of schedule 89% of the time. The median arrival delay was -21 min, and the worst 10% of flights arrived +24 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 | 57 | 89% |
| 16-30 min | 2 | 3% |
| 31-60 min | 3 | 5% |
| 61-120 min | 1 | 2% |
| 2+ hrs | 1 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 2 | 100% | -35 min |
| 2026-04 | 13 | 85% | -11 min |
| 2026-05 | 22 | 100% | -21 min |
| 2026-06 | 27 | 81% | -11 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 10 | 90% |
| Tue | 6 | 100% |
| Wed | 5 | 60% |
| Thu | 13 | 85% |
| Fri | 13 | 85% |
| Sat | 8 | 100% |
| Sun | 9 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…