Flight AA1543
American Airlines flight AA1543
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Watch Ground Delay Program SAN
Ground Delay Program at San Diego International Airport (SAN): Average 37 minutes, up to 1 hour and 11 minutes
Reason: airport volume
Airport status
Chicago (ORD) to San Diego (SAN)
Historically, this flight arrives 15+ minutes late 35% of the time, and when it is late the delay averages 85 minutes. It was cancelled 3.4% of the time.
- On-time arrivals
- 65.4%
- Less than 15 minutes late
- Cancelled
- 3.4%
- Of scheduled flights
- Average delay when late
- 85 min
- Flights arriving 15+ minutes late
- Flights tracked
- 237
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 35%
- Late-arriving aircraft 32%
- Air traffic control & airport 21%
- Extreme weather 12%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Diego (SAN) to Chicago (ORD)
Historically, this flight arrives 15+ minutes late 9% of the time, and when it is late the delay averages 140 minutes. It was cancelled 1.3% of the time.
- On-time arrivals
- 90.7%
- Less than 15 minutes late
- Cancelled
- 1.3%
- Of scheduled flights
- Average delay when late
- 140 min
- Flights arriving 15+ minutes late
- Flights tracked
- 76
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 85%
- Air traffic control & airport 11%
- Late-arriving aircraft 4%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Las Vegas (LAS) to Philadelphia (PHL)
Historically, this flight arrives 15+ minutes late 16% of the time, and when it is late the delay averages 126 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 83.7%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 126 min
- Flights arriving 15+ minutes late
- Flights tracked
- 43
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 75%
- Late-arriving aircraft 22%
- Air traffic control & airport 3%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Cincinnati / Covington (CVG) to Charlotte (CLT)
Only 3 flights on record, which is too few for reliable odds.
- On-time arrivals
- 66.7%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 60 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 53%
- Airline (crew, maintenance, cleaning) 47%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 75.9% | 30 |
| October 2025 | 76.7% | 30 |
| November 2025 | 74.1% | 29 |
| December 2025 | 58.6% | 29 |
| January 2026 | 66.7% | 30 |
| February 2026 | 60.7% | 28 |
| March 2026 | 62.1% | 31 |
| April 2026 | 80.0% | 30 |
| May 2026 | 90.0% | 30 |
| June 2026 | 93.1% | 30 |
| July 2026 | 83.9% | 31 |
| August 2026 | 53.3% | 31 |
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