Flight OddsUA2107 BOS → SFO
United Airlines · Boston, MA to San Francisco, CA · 64 flights observed, 2026-03-29 to 2026-06-29 · 2,704 mi
UA2107 covers more than one route in the data window — the stats below are for BOS → SFO, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
56%
Median delay
+6 min
90th percentile
+65 min
Cancellation rate
2%
How often is UA2107 on time?
Across 64 flights on BOS → SFO from 2026-03-29 to 2026-06-29, UA2107 arrived within 15 minutes of schedule 56% of the time. The median arrival delay was +6 min, and the worst 10% of flights arrived +65 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 35 | 56% |
| 16-30 min | 10 | 16% |
| 31-60 min | 10 | 16% |
| 61-120 min | 5 | 8% |
| 2+ hrs | 3 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 2 | 100% | -2 min |
| 2026-04 | 21 | 57% | +19 min |
| 2026-05 | 20 | 70% | +12 min |
| 2026-06 | 20 | 35% | +36 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 14 | 57% |
| Tue | 2 | 50% |
| Wed | 5 | 20% |
| Thu | 13 | 38% |
| Fri | 13 | 77% |
| Sat | 4 | 75% |
| Sun | 12 | 58% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…