Flight UA1978
United Airlines flight UA1978
Looking for UA1978 in the airâŚ
Denver (DEN) to Cincinnati / Covington (CVG)
Historically, this flight arrives 15+ minutes late 7% of the time, and when it is late the delay averages 82 minutes. It was cancelled 0.3% of the time.
- On-time arrivals
- 93.3%
- Less than 15 minutes late
- Cancelled
- 0.3%
- Of scheduled flights
- Average delay when late
- 82 min
- Flights arriving 15+ minutes late
- Flights tracked
- 343
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 46%
- Late-arriving aircraft 35%
- Air traffic control & airport 18%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Jackson (JAC) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 89 minutes. It was cancelled 1.7% of the time.
- On-time arrivals
- 90.4%
- Less than 15 minutes late
- Cancelled
- 1.7%
- Of scheduled flights
- Average delay when late
- 89 min
- Flights arriving 15+ minutes late
- Flights tracked
- 233
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 38%
- Air traffic control & airport 33%
- Late-arriving aircraft 23%
- Extreme weather 6%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Missoula (MSO) to Denver (DEN)
Only 18 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
- 18
- Scheduled flights in the period
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Headlines found by Google News; stories open on the publisher's site.
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 90.9% | 55 |
| October 2025 | 85.5% | 56 |
| November 2025 | 96.6% | 29 |
| December 2025 | 93.5% | 31 |
| January 2026 | 100.0% | 31 |
| February 2026 | 89.3% | 28 |
| March 2026 | 89.5% | 58 |
| April 2026 | 96.7% | 60 |
| May 2026 | 96.8% | 62 |
| June 2026 | 88.1% | 60 |
| July 2026 | 87.1% | 62 |
| August 2026 | 98.4% | 62 |
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