Flight DL2479
Delta Air Lines flight DL2479
Looking for DL2479 in the air…
Atlanta (ATL) to Portland (PWM)
Historically, this flight arrives 15+ minutes late 16% of the time, and when it is late the delay averages 39 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 83.6%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 39 min
- Flights arriving 15+ minutes late
- Flights tracked
- 140
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 58%
- Airline (crew, maintenance, cleaning) 28%
- Late-arriving aircraft 14%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Portland (PWM) to Atlanta (ATL)
Historically, this flight arrives 15+ minutes late 41% of the time, and when it is late the delay averages 99 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 58.8%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 99 min
- Flights arriving 15+ minutes late
- Flights tracked
- 139
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 53%
- Air traffic control & airport 37%
- Late-arriving aircraft 10%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Miami (MIA) to Atlanta (ATL)
Historically, this flight arrives 15+ minutes late 31% of the time, and when it is late the delay averages 65 minutes. It was cancelled 2.8% of the time.
- On-time arrivals
- 68.6%
- Less than 15 minutes late
- Cancelled
- 2.8%
- Of scheduled flights
- Average delay when late
- 65 min
- Flights arriving 15+ minutes late
- Flights tracked
- 36
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 55%
- Airline (crew, maintenance, cleaning) 21%
- Air traffic control & airport 17%
- Extreme weather 6%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
St Louis (STL) to Detroit (DTW)
Only 1 flight on record, which is too few for reliable odds.
- On-time arrivals
- 100.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- —
- Flights arriving 15+ minutes late
- Flights tracked
- 1
- Scheduled flights in the period
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Show as table
| Month | On time | Flights |
|---|---|---|
| November 2025 | 81.4% | 43 |
| December 2025 | 66.7% | 3 |
| March 2026 | 69.6% | 24 |
| April 2026 | 66.7% | 12 |
| May 2026 | 74.0% | 50 |
| June 2026 | 81.7% | 60 |
| July 2026 | 64.4% | 62 |
| August 2026 | 59.7% | 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