Flight UA1520
United Airlines flight UA1520
Looking for UA1520 in the airâŚ
Orlando (MCO) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 8% of the time, and when it is late the delay averages 62 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 91.8%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 62 min
- Flights arriving 15+ minutes late
- Flights tracked
- 364
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 40%
- Airline (crew, maintenance, cleaning) 30%
- Air traffic control & airport 29%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Newark (EWR) to Orlando (MCO)
Historically, this flight arrives 15+ minutes late 2% of the time, and when it is late the delay averages 47 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 97.6%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 47 min
- Flights arriving 15+ minutes late
- Flights tracked
- 84
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 100%
- Airline (crew, maintenance, cleaning) 0%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Denver (DEN) to Hartford (BDL)
Historically, this flight arrives 15+ minutes late 29% of the time, and when it is late the delay averages 53 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 71.4%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 53 min
- Flights arriving 15+ minutes late
- Flights tracked
- 35
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 55%
- Air traffic control & airport 45%
- Late-arriving aircraft 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 | 88.9% | 36 |
| October 2025 | 88.5% | 61 |
| November 2025 | 82.8% | 58 |
| December 2025 | 93.8% | 32 |
| January 2026 | 100.0% | 31 |
| February 2026 | 92.9% | 28 |
| March 2026 | 91.2% | 34 |
| April 2026 | 96.7% | 60 |
| May 2026 | 98.0% | 51 |
| June 2026 | 83.3% | 30 |
| July 2026 | 93.5% | 31 |
| August 2026 | 87.1% | 31 |
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