Flight OddsUA4556 MSN → ORD
United Airlines · Madison, WI to Chicago, IL · 20 flights observed, 2026-03-29 to 2026-04-27 · 108 mi
UA4556 covers more than one route in the data window — the stats below are for MSN → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
50%
Median delay
+17 min
90th percentile
+111 min
Cancellation rate
10%
How often is UA4556 on time?
Across 20 flights on MSN → ORD from 2026-03-29 to 2026-04-27, UA4556 arrived within 15 minutes of schedule 50% of the time. The median arrival delay was +17 min, and the worst 10% of flights arrived +111 min or later. 10% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 9 | 50% |
| 16-30 min | 3 | 17% |
| 31-60 min | 1 | 6% |
| 61-120 min | 3 | 17% |
| 2+ hrs | 2 | 11% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 3 | 67% | +51 min |
| 2026-04 | 15 | 47% | +34 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 75% |
| Tue | 1 | 0% |
| Wed | 1 | 100% |
| Thu | 4 | 25% |
| Fri | 3 | 33% |
| Sat | No data | — |
| Sun | 5 | 60% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…