Flight profile · United Airlines
UA2040
Boston (BOS) to Chicago (ORD) · scheduled 4:27 PM – 6:20 PM
How UA2040 performs
708 operations, 2024-06-27 to 2026-06-30.
UA2040 arrived on time 58.4% of the time, against 77.1% for all BOS → ORD flights — this specific departure is 18.7 percentage points worse than the route as a whole. Against United Airlines’s own flights on this route it is 20.8 points worse.
Source: US DOT Bureau of Transportation Statistics · 708 operations between 2024-06-27 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA2040 | 58.4% | 1.69% | 9 min | 11.4% | 708 |
| United Airlines on BOS → ORD | 79.2% | 1.53% | -6 min | 8.1% | 7,310 |
| All BOS → ORD flights | 77.1% | 1.92% | -7 min | 9.7% | 21,098 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-27 to 2026-06-30
Other routes UA2040 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| ORD→FLL Chicago to Fort Lauderdale | 2025-12-27 – 2026-01-03 | 2 | — |
| ORD→PHX Chicago to Phoenix | 2025-11-29 – 2025-11-30 | 2 | — |
| ORD→DEN Chicago to Denver | 2025-05-01 – 2025-08-18 | 74 | — |
| ORD→MCI Chicago to Kansas City | 2025-06-26 – 2025-07-31 | 35 | — |
| PBI→ORD West Palm Beach to Chicago | 2025-05-01 – 2025-05-21 | 21 | — |
| ORD→ATL Chicago to Atlanta | 2024-08-19 – 2024-08-23 | 3 | — |
| PIT→ORD Pittsburgh to Chicago | 2024-01-09 – 2024-06-26 | 146 | 69.7% |
| ORD→SNA Chicago to Santa Ana | 2024-02-15 – 2024-06-26 | 86 | — |
| SFO→RNO San Francisco to Reno | 2023-12-21 – 2024-01-08 | 19 | — |
| IAH→MSY Houston to New Orleans | 2023-09-29 – 2023-12-20 | 74 | — |
| PHL→IAH Philadelphia to Houston | 2023-11-28 – 2023-12-20 | 20 | — |
| ATL→IAH Atlanta to Houston | 2023-10-29 – 2023-11-27 | 27 | — |
| SAN→IAH San Diego to Houston | 2023-10-01 – 2023-10-28 | 28 | — |
| LAX→IAH Los Angeles to Houston | 2023-07-01 – 2023-09-30 | 92 | 92.4% |
Because the same number has served different journeys, the statistics above describe only the route UA2040 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 708 records of UA2040 operating BOS → ORD, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.