Flight DL506
Delta Air Lines flight DL506
Looking for DL506 in the air…
Seattle (SEA) to Miami (MIA)
Historically, this flight arrives 15+ minutes late 19% of the time, and when it is late the delay averages 71 minutes. It was cancelled 1.4% of the time.
- On-time arrivals
- 80.7%
- Less than 15 minutes late
- Cancelled
- 1.4%
- Of scheduled flights
- Average delay when late
- 71 min
- Flights arriving 15+ minutes late
- Flights tracked
- 365
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 58%
- Air traffic control & airport 38%
- Extreme weather 3%
- Late-arriving aircraft 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Miami (MIA) to Seattle (SEA)
Historically, this flight arrives 15+ minutes late 39% of the time, and when it is late the delay averages 98 minutes. It was cancelled 2.3% of the time.
- On-time arrivals
- 61.2%
- Less than 15 minutes late
- Cancelled
- 2.3%
- Of scheduled flights
- Average delay when late
- 98 min
- Flights arriving 15+ minutes late
- Flights tracked
- 257
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 57%
- Late-arriving aircraft 25%
- Air traffic control & airport 15%
- Extreme weather 3%
- 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 | 59.3% | 60 |
| October 2025 | 88.7% | 62 |
| November 2025 | 71.4% | 60 |
| December 2025 | 77.1% | 50 |
| January 2026 | 74.2% | 31 |
| February 2026 | 71.1% | 45 |
| March 2026 | 57.9% | 62 |
| April 2026 | 69.0% | 42 |
| May 2026 | 76.8% | 56 |
| June 2026 | 77.8% | 36 |
| July 2026 | 79.2% | 56 |
| August 2026 | 71.0% | 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