Flight OddsUA2661 SFO → BOS
United Airlines · San Francisco, CA to Boston, MA · 3 flights observed, 2026-05-06 to 2026-05-20 · 2,704 mi
UA2661 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
0%
Median delay
+26 min
90th percentile
+28 min
Cancellation rate
0%
How often is UA2661 on time?
Across 3 flights on SFO → BOS from 2026-05-06 to 2026-05-20, UA2661 arrived within 15 minutes of schedule 0% of the time. The median arrival delay was +26 min, and the worst 10% of flights arrived +28 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 | 0 | 0% |
| 16-30 min | 3 | 100% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-05 | 3 | 0% | +25 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | No data | — |
| Wed | 3 | 0% |
| Thu | No data | — |
| Fri | No data | — |
| Sat | No data | — |
| Sun | No data | — |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…