Flight OddsUA2229 BOS → ORD
United Airlines · Boston, MA to Chicago, IL · 123 flights observed, 2025-07-03 to 2026-06-30 · 867 mi
UA2229 covers more than one route in the data window — the stats below are for BOS → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
52%
Median delay
+12 min
90th percentile
+162 min
Cancellation rate
2%
How often is UA2229 on time?
Across 123 flights on BOS → ORD from 2025-07-03 to 2026-06-30, UA2229 arrived within 15 minutes of schedule 52% of the time. The median arrival delay was +12 min, and the worst 10% of flights arrived +162 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 | 62 | 52% |
| 16-30 min | 8 | 7% |
| 31-60 min | 16 | 13% |
| 61-120 min | 15 | 13% |
| 2+ hrs | 19 | 16% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 15 | 27% | +74 min |
| 2025-08 | 18 | 67% | +23 min |
| 2025-09 | 17 | 24% | +80 min |
| 2025-10 | 17 | 35% | +46 min |
| 2025-11 | 18 | 67% | +59 min |
| 2025-12 | 1 | 0% | +244 min |
| 2026-05 | 8 | 100% | -8 min |
| 2026-06 | 26 | 62% | +33 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 26 | 54% |
| Tue | 7 | 100% |
| Wed | 6 | 67% |
| Thu | 26 | 42% |
| Fri | 26 | 58% |
| Sat | 3 | 33% |
| Sun | 26 | 38% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…