Flight UA2329
United Airlines flight UA2329
Looking for UA2329 in the airâŚ
Denver (DEN) to Chicago (ORD)
Historically, this flight arrives 15+ minutes late 16% of the time, and when it is late the delay averages 94 minutes. It was cancelled 0.5% of the time.
- On-time arrivals
- 84.1%
- Less than 15 minutes late
- Cancelled
- 0.5%
- Of scheduled flights
- Average delay when late
- 94 min
- Flights arriving 15+ minutes late
- Flights tracked
- 365
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 38%
- Airline (crew, maintenance, cleaning) 29%
- Late-arriving aircraft 22%
- Extreme weather 11%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Luis Obispo (SBP) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 11% of the time, and when it is late the delay averages 140 minutes. It was cancelled 0.8% of the time.
- On-time arrivals
- 89.3%
- Less than 15 minutes late
- Cancelled
- 0.8%
- Of scheduled flights
- Average delay when late
- 140 min
- Flights arriving 15+ minutes late
- Flights tracked
- 237
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 59%
- Late-arriving aircraft 34%
- Air traffic control & airport 5%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Reno (RNO) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 7% of the time, and when it is late the delay averages 49 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 92.6%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 49 min
- Flights arriving 15+ minutes late
- Flights tracked
- 68
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 67%
- Air traffic control & airport 33%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Chicago (ORD) to New York (LGA)
Historically, this flight arrives 15+ minutes late 47% of the time, and when it is late the delay averages 90 minutes. It was cancelled 6.5% of the time.
- On-time arrivals
- 53.4%
- Less than 15 minutes late
- Cancelled
- 6.5%
- Of scheduled flights
- Average delay when late
- 90 min
- Flights arriving 15+ minutes late
- Flights tracked
- 62
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 44%
- Air traffic control & airport 38%
- Airline (crew, maintenance, cleaning) 19%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Chicago (ORD) to Detroit (DTW)
Historically, this flight arrives 15+ minutes late 27% of the time, and when it is late the delay averages 50 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 72.7%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 50 min
- Flights arriving 15+ minutes late
- Flights tracked
- 55
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 48%
- Late-arriving aircraft 37%
- Air traffic control & airport 16%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Chicago (ORD) to Newark (EWR)
Historically, this flight arrives 15+ minutes late 32% of the time, and when it is late the delay averages 105 minutes. It was cancelled 12.8% of the time.
- On-time arrivals
- 68.3%
- Less than 15 minutes late
- Cancelled
- 12.8%
- Of scheduled flights
- Average delay when late
- 105 min
- Flights arriving 15+ minutes late
- Flights tracked
- 47
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 73%
- Late-arriving aircraft 18%
- Airline (crew, maintenance, cleaning) 9%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Chicago (ORD) to Cleveland (CLE)
Historically, this flight arrives 15+ minutes late 22% of the time, and when it is late the delay averages 59 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 78.4%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 59 min
- Flights arriving 15+ minutes late
- Flights tracked
- 37
- Scheduled flights in the period
What caused the delays
- Extreme weather 37%
- Airline (crew, maintenance, cleaning) 33%
- Late-arriving aircraft 19%
- Air traffic control & airport 12%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Chicago (ORD) to Omaha (OMA)
Historically, this flight arrives 15+ minutes late 38% of the time, and when it is late the delay averages 57 minutes. It was cancelled 2.9% of the time.
- On-time arrivals
- 61.8%
- Less than 15 minutes late
- Cancelled
- 2.9%
- Of scheduled flights
- Average delay when late
- 57 min
- Flights arriving 15+ minutes late
- Flights tracked
- 35
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 35%
- Air traffic control & airport 34%
- Extreme weather 25%
- Airline (crew, maintenance, cleaning) 7%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Palm Springs (PSP) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 8% of the time, and when it is late the delay averages 138 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 91.7%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 138 min
- Flights arriving 15+ minutes late
- Flights tracked
- 24
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 94%
- Air traffic control & airport 6%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Phoenix (PHX) to Denver (DEN)
Only 19 flights on record, which is too few for reliable odds.
- On-time arrivals
- 100.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- â
- Flights arriving 15+ minutes late
- Flights tracked
- 19
- Scheduled flights in the period
Chicago (ORD) to Baltimore (BWI)
Only 18 flights on record, which is too few for reliable odds.
- On-time arrivals
- 76.5%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 61 min
- Flights arriving 15+ minutes late
- Flights tracked
- 18
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 53%
- Airline (crew, maintenance, cleaning) 47%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
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Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 82.2% | 90 |
| October 2025 | 89.7% | 87 |
| November 2025 | 91.4% | 60 |
| December 2025 | 78.7% | 62 |
| January 2026 | 82.8% | 88 |
| February 2026 | 87.2% | 80 |
| March 2026 | 79.1% | 69 |
| April 2026 | 65.9% | 86 |
| May 2026 | 84.3% | 90 |
| June 2026 | 80.7% | 90 |
| July 2026 | 83.5% | 93 |
| August 2026 | 81.4% | 72 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 â August 2026. Covers flights operated by reporting U.S. carriers. About our data