Flight DL566
Delta Air Lines flight DL566
Looking for DL566 in the air…
St Louis (STL) to Atlanta (ATL)
Historically, this flight arrives 15+ minutes late 13% of the time, and when it is late the delay averages 62 minutes. It was cancelled 1.8% of the time.
- On-time arrivals
- 86.6%
- Less than 15 minutes late
- Cancelled
- 1.8%
- Of scheduled flights
- Average delay when late
- 62 min
- Flights arriving 15+ minutes late
- Flights tracked
- 223
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 42%
- Air traffic control & airport 39%
- Late-arriving aircraft 11%
- Extreme weather 7%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Atlanta (ATL) to St Louis (STL)
Historically, this flight arrives 15+ minutes late 15% of the time, and when it is late the delay averages 36 minutes. It was cancelled 1.0% of the time.
- On-time arrivals
- 85.1%
- Less than 15 minutes late
- Cancelled
- 1.0%
- Of scheduled flights
- Average delay when late
- 36 min
- Flights arriving 15+ minutes late
- Flights tracked
- 102
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 50%
- Late-arriving aircraft 32%
- Air traffic control & airport 18%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Detroit (DTW) to Sacramento (SMF)
Historically, this flight arrives 15+ minutes late 7% of the time, and when it is late the delay averages 52 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 93.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 52 min
- Flights arriving 15+ minutes late
- Flights tracked
- 86
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 56%
- Airline (crew, maintenance, cleaning) 24%
- Late-arriving aircraft 19%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sacramento (SMF) to Detroit (DTW)
Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 88 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 89.5%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 88 min
- Flights arriving 15+ minutes late
- Flights tracked
- 86
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 82%
- Late-arriving aircraft 13%
- Air traffic control & airport 5%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Las Vegas (LAS) to New York (JFK)
Historically, this flight arrives 15+ minutes late 23% of the time, and when it is late the delay averages 60 minutes. It was cancelled 3.2% of the time.
- On-time arrivals
- 76.7%
- Less than 15 minutes late
- Cancelled
- 3.2%
- Of scheduled flights
- Average delay when late
- 60 min
- Flights arriving 15+ minutes late
- Flights tracked
- 31
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 75%
- Late-arriving aircraft 23%
- Air traffic control & airport 2%
- 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 | 95.0% | 60 |
| October 2025 | 91.7% | 60 |
| November 2025 | 86.0% | 50 |
| December 2025 | 91.7% | 26 |
| January 2026 | 84.4% | 34 |
| February 2026 | 92.9% | 28 |
| March 2026 | 86.7% | 31 |
| April 2026 | 86.2% | 30 |
| May 2026 | 80.0% | 31 |
| June 2026 | 75.9% | 54 |
| July 2026 | 83.9% | 62 |
| August 2026 | 91.8% | 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