Flight OddsUA488 SFO → ORD
United Airlines · San Francisco, CA to Chicago, IL · 45 flights observed, 2026-02-12 to 2026-03-28 · 1,846 mi
UA488 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
68%
Median delay
+4 min
90th percentile
+45 min
Cancellation rate
2%
How often is UA488 on time?
Across 45 flights on SFO → ORD from 2026-02-12 to 2026-03-28, UA488 arrived within 15 minutes of schedule 68% of the time. The median arrival delay was +4 min, and the worst 10% of flights arrived +45 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 | 30 | 68% |
| 16-30 min | 5 | 11% |
| 31-60 min | 5 | 11% |
| 61-120 min | 4 | 9% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-02 | 17 | 71% | +10 min |
| 2026-03 | 27 | 67% | +12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 6 | 67% |
| Tue | 6 | 67% |
| Wed | 5 | 80% |
| Thu | 7 | 71% |
| Fri | 7 | 71% |
| Sat | 7 | 71% |
| Sun | 6 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…