UA2229
UA2229 (United Airlines) is a multi-stop service on 18 routes, busiest Boston to Chicago. Of 551 departures recorded from October 2024 to July 2026, 72.9% left on time, according to the US BTS.
- On-time departures72.9%of 551 flights
- Average delay23.2 min
- July 202630▲ 87.5%vs July 2025
- Cancelled1.5%
- Legs flown under this number18
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 31 | 0.0% |
| February | 43 | 31 | ▼ 27.9% |
| March | 31 | 31 | 0.0% |
| April | – | 31 | – |
| May | 5 | 48 | ▲ 860.0% |
| June | 18 | 27 | ▲ 50.0% |
| July | 16 | 30 | ▲ 87.5% |
| August | 18 | – | – |
| September | 17 | – | – |
| October | 17 | – | in progress |
| November | 21 | – | – |
| December | 31 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 82.8% | 87.1% | ▲ 5.2% |
| February | 88.4% | 83.9% | ▼ 5.1% |
| March | 90.3% | 62.1% | ▼ 31.3% |
| April | – | 96.8% | – |
| May | 80.0% | 97.9% | ▲ 22.4% |
| June | 38.9% | 55.6% | ▲ 42.9% |
| July | 20.0% | 55.2% | ▲ 175.9% |
| August | 55.6% | – | – |
| September | 11.8% | – | – |
| October | 35.3% | – | in progress |
| November | 57.9% | – | – |
| December | 90.3% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 2 | – |
| April | – | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 1 | 0.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 0 | – | – |
according to the US BTS · October 2024 → July 2026
This is a historical record of departures already flown, not a forecast for your flight.
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 98.5% 543
- Cancelled 1.5% 8
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BOS ORD Boston Logan International Airport – Chicago O'Hare International Airport | 1,391 | 57.6 min | 47.4% | 176 |
| SFO KOA San Francisco International Airport – Ellison Onizuka Kona International Airport at Keāhole | 3,808 | 3.8 min | 86.4% | 59 |
| SFO TUS San Francisco International Airport – Tucson International Airport | 1,208 | 4.6 min | 89.3% | 58 |
| OGG SFO Kahului International Airport – San Francisco International Airport | 3,761 | -4.1 min | 96.2% | 53 |
| EWR SYR Newark Liberty International Airport – Syracuse Hancock International Airport | 313 | 14.3 min | 76.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 94.7% | 0 |
| November 2024 | 24 | 24 | 75.0% | 0 |
| December 2024 | 31 | 31 | 64.5% | 0 |
| January 2025 | 31 | 29 | 82.8% | 2 |
| February 2025 | 43 | 43 | 88.4% | 0 |
| March 2025 | 31 | 31 | 90.3% | 0 |
| May 2025 | 5 | 5 | 80.0% | 0 |
| June 2025 | 18 | 18 | 38.9% | 0 |
| July 2025 | 16 | 15 | 20.0% | 1 |
| August 2025 | 18 | 18 | 55.6% | 0 |
| September 2025 | 17 | 17 | 11.8% | 0 |
| October 2025 | 17 | 17 | 35.3% | 0 |
| November 2025 | 21 | 19 | 57.9% | 2 |
| December 2025 | 31 | 31 | 90.3% | 0 |
| January 2026 | 31 | 31 | 87.1% | 0 |
| February 2026 | 31 | 31 | 83.9% | 0 |
| March 2026 | 31 | 29 | 62.1% | 2 |
| April 2026 | 31 | 31 | 96.8% | 0 |
| May 2026 | 48 | 48 | 97.9% | 0 |
| June 2026 | 27 | 27 | 55.6% | 0 |
| July 2026 | 30 | 29 | 55.2% | 1 |