Flight UA1615
United Airlines flight UA1615
Looking for UA1615 in the airâŚ
Denver (DEN) to Cincinnati / Covington (CVG)
Historically, this flight arrives 15+ minutes late 25% of the time, and when it is late the delay averages 63 minutes. It was cancelled 0.6% of the time.
- On-time arrivals
- 75.3%
- Less than 15 minutes late
- Cancelled
- 0.6%
- Of scheduled flights
- Average delay when late
- 63 min
- Flights arriving 15+ minutes late
- Flights tracked
- 363
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 51%
- Airline (crew, maintenance, cleaning) 28%
- Air traffic control & airport 18%
- Extreme weather 4%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Phoenix (PHX) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 26% of the time, and when it is late the delay averages 103 minutes. It was cancelled 1.2% of the time.
- On-time arrivals
- 73.8%
- Less than 15 minutes late
- Cancelled
- 1.2%
- Of scheduled flights
- Average delay when late
- 103 min
- Flights arriving 15+ minutes late
- Flights tracked
- 82
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 57%
- Airline (crew, maintenance, cleaning) 31%
- Late-arriving aircraft 11%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Medford (MFR) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 37% of the time, and when it is late the delay averages 70 minutes. It was cancelled 3.2% of the time.
- On-time arrivals
- 63.3%
- Less than 15 minutes late
- Cancelled
- 3.2%
- Of scheduled flights
- Average delay when late
- 70 min
- Flights arriving 15+ minutes late
- Flights tracked
- 31
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 88%
- Air traffic control & airport 6%
- Late-arriving aircraft 3%
- Extreme weather 3%
- 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 | 72.2% | 36 |
| October 2025 | 81.8% | 56 |
| November 2025 | 89.7% | 29 |
| December 2025 | 61.3% | 31 |
| January 2026 | 73.3% | 31 |
| February 2026 | 89.3% | 28 |
| March 2026 | 64.5% | 31 |
| April 2026 | 86.2% | 30 |
| May 2026 | 78.6% | 42 |
| June 2026 | 78.0% | 60 |
| July 2026 | 63.9% | 61 |
| August 2026 | 60.0% | 41 |
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