Flight AA621
American Airlines flight AA621
Looking for AA621 in the air…
Atlanta (ATL) to Philadelphia (PHL)
Historically, this flight arrives 15+ minutes late 39% of the time, and when it is late the delay averages 127 minutes. It was cancelled 3.7% of the time.
- On-time arrivals
- 61.0%
- Less than 15 minutes late
- Cancelled
- 3.7%
- Of scheduled flights
- Average delay when late
- 127 min
- Flights arriving 15+ minutes late
- Flights tracked
- 109
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 55%
- Extreme weather 25%
- Air traffic control & airport 10%
- Airline (crew, maintenance, cleaning) 10%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Philadelphia (PHL) to Atlanta (ATL)
Historically, this flight arrives 15+ minutes late 31% of the time, and when it is late the delay averages 83 minutes. It was cancelled 2.7% of the time.
- On-time arrivals
- 68.6%
- Less than 15 minutes late
- Cancelled
- 2.7%
- Of scheduled flights
- Average delay when late
- 83 min
- Flights arriving 15+ minutes late
- Flights tracked
- 74
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 69%
- Airline (crew, maintenance, cleaning) 24%
- Air traffic control & airport 7%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Los Angeles (LAX) to Miami (MIA)
Historically, this flight arrives 15+ minutes late 7% of the time, and when it is late the delay averages 84 minutes. It was cancelled 1.4% of the time.
- On-time arrivals
- 92.6%
- Less than 15 minutes late
- Cancelled
- 1.4%
- Of scheduled flights
- Average delay when late
- 84 min
- Flights arriving 15+ minutes late
- Flights tracked
- 69
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 48%
- Late-arriving aircraft 32%
- Air traffic control & airport 20%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Juan (SJU) to Philadelphia (PHL)
Historically, this flight arrives 15+ minutes late 15% of the time, and when it is late the delay averages 85 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 85.2%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 85 min
- Flights arriving 15+ minutes late
- Flights tracked
- 27
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 74%
- Late-arriving aircraft 14%
- Airline (crew, maintenance, cleaning) 12%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
In the news
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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 | 72.4% | 30 |
| October 2025 | 60.0% | 5 |
| January 2026 | 93.3% | 31 |
| February 2026 | 100.0% | 8 |
| March 2026 | 95.8% | 24 |
| April 2026 | 66.7% | 6 |
| May 2026 | 70.0% | 20 |
| June 2026 | 66.7% | 58 |
| July 2026 | 64.3% | 62 |
| August 2026 | 65.7% | 35 |
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