Flight AA420
American Airlines flight AA420
Looking for AA420 in the air…
Dallas-Fort Worth (DFW) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 25% of the time, and when it is late the delay averages 84 minutes. It was cancelled 3.0% of the time.
- On-time arrivals
- 74.7%
- Less than 15 minutes late
- Cancelled
- 3.0%
- Of scheduled flights
- Average delay when late
- 84 min
- Flights arriving 15+ minutes late
- Flights tracked
- 365
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 57%
- Airline (crew, maintenance, cleaning) 30%
- Air traffic control & airport 9%
- Extreme weather 4%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Denver (DEN) to Dallas-Fort Worth (DFW)
Historically, this flight arrives 15+ minutes late 35% of the time, and when it is late the delay averages 98 minutes. It was cancelled 4.1% of the time.
- On-time arrivals
- 65.4%
- Less than 15 minutes late
- Cancelled
- 4.1%
- Of scheduled flights
- Average delay when late
- 98 min
- Flights arriving 15+ minutes late
- Flights tracked
- 362
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 65%
- Airline (crew, maintenance, cleaning) 18%
- Air traffic control & airport 14%
- Extreme weather 4%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 84.7% | 60 |
| October 2025 | 73.3% | 62 |
| November 2025 | 82.8% | 59 |
| December 2025 | 75.8% | 62 |
| January 2026 | 78.8% | 62 |
| February 2026 | 65.5% | 56 |
| March 2026 | 71.0% | 62 |
| April 2026 | 78.0% | 60 |
| May 2026 | 74.6% | 61 |
| June 2026 | 51.0% | 60 |
| July 2026 | 52.5% | 61 |
| August 2026 | 51.6% | 62 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data