Flight OddsUA618 ORD → BOS
United Airlines · Chicago, IL to Boston, MA · 32 flights observed, 2025-10-26 to 2025-12-01 · 867 mi
UA618 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
81%
Median delay
+2 min
90th percentile
+37 min
Cancellation rate
3%
How often is UA618 on time?
Across 32 flights on ORD → BOS from 2025-10-26 to 2025-12-01, UA618 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was +2 min, and the worst 10% of flights arrived +37 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 | 25 | 81% |
| 16-30 min | 2 | 6% |
| 31-60 min | 1 | 3% |
| 61-120 min | 2 | 6% |
| 2+ hrs | 1 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 83% | +30 min |
| 2025-11 | 24 | 79% | +7 min |
| 2025-12 | 1 | 100% | -16 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 6 | 67% |
| Tue | 4 | 100% |
| Wed | 5 | 80% |
| Thu | 5 | 80% |
| Fri | 5 | 80% |
| Sat | No data | — |
| Sun | 6 | 83% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…