Flight OddsUA2855 SFO → ORD
United Airlines · San Francisco, CA to Chicago, IL · 57 flights observed, 2026-03-05 to 2026-04-30 · 1,846 mi
UA2855 covers more than one route in the data window — the stats below are for SFO → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
70%
Median delay
-3 min
90th percentile
+73 min
Cancellation rate
0%
How often is UA2855 on time?
Across 57 flights on SFO → ORD from 2026-03-05 to 2026-04-30, UA2855 arrived within 15 minutes of schedule 70% of the time. The median arrival delay was -3 min, and the worst 10% of flights arrived +73 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 | 38 | 70% |
| 16-30 min | 5 | 9% |
| 31-60 min | 4 | 7% |
| 61-120 min | 3 | 6% |
| 2+ hrs | 4 | 7% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 26 | 73% | +18 min |
| 2026-04 | 28 | 68% | +14 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 50% |
| Tue | 7 | 71% |
| Wed | 8 | 63% |
| Thu | 8 | 63% |
| Fri | 7 | 57% |
| Sat | 8 | 100% |
| Sun | 8 | 88% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…