Flight OddsUA1989 ORD → BOS
United Airlines · Chicago, IL to Boston, MA · 232 flights observed, 2025-07-01 to 2026-03-28 · 867 mi
UA1989 covers more than one route in the data window — the stats below are for ORD → BOS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
60%
Median delay
+9 min
90th percentile
+102 min
Cancellation rate
3%
How often is UA1989 on time?
Across 232 flights on ORD → BOS from 2025-07-01 to 2026-03-28, UA1989 arrived within 15 minutes of schedule 60% of the time. The median arrival delay was +9 min, and the worst 10% of flights arrived +102 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 136 | 60% |
| 16-30 min | 22 | 10% |
| 31-60 min | 27 | 12% |
| 61-120 min | 21 | 9% |
| 2+ hrs | 19 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 60% | +29 min |
| 2025-08 | 17 | 65% | +33 min |
| 2025-09 | 6 | 50% | +57 min |
| 2025-10 | 30 | 50% | +43 min |
| 2025-11 | 29 | 59% | +57 min |
| 2025-12 | 31 | 58% | +16 min |
| 2026-01 | 29 | 66% | +19 min |
| 2026-02 | 25 | 72% | +13 min |
| 2026-03 | 28 | 61% | +36 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 30 | 57% |
| Tue | 32 | 63% |
| Wed | 33 | 61% |
| Thu | 33 | 61% |
| Fri | 32 | 69% |
| Sat | 34 | 65% |
| Sun | 31 | 48% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…