Flight DL1391
Delta Air Lines flight DL1391
Looking for DL1391 in the air…
Detroit (DTW) to Philadelphia (PHL)
Historically, this flight arrives 15+ minutes late 32% of the time, and when it is late the delay averages 98 minutes. It was cancelled 2.1% of the time.
- On-time arrivals
- 67.9%
- Less than 15 minutes late
- Cancelled
- 2.1%
- Of scheduled flights
- Average delay when late
- 98 min
- Flights arriving 15+ minutes late
- Flights tracked
- 239
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 56%
- Airline (crew, maintenance, cleaning) 29%
- Late-arriving aircraft 11%
- Extreme weather 5%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Philadelphia (PHL) to Detroit (DTW)
Historically, this flight arrives 15+ minutes late 32% of the time, and when it is late the delay averages 138 minutes. It was cancelled 2.1% of the time.
- On-time arrivals
- 67.5%
- Less than 15 minutes late
- Cancelled
- 2.1%
- Of scheduled flights
- Average delay when late
- 138 min
- Flights arriving 15+ minutes late
- Flights tracked
- 239
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 45%
- Airline (crew, maintenance, cleaning) 27%
- Air traffic control & airport 15%
- Extreme weather 13%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
New York (LGA) to Raleigh/Durham (RDU)
Historically, this flight arrives 15+ minutes late 6% of the time, and when it is late the delay averages 78 minutes. It was cancelled 7.1% of the time.
- On-time arrivals
- 93.6%
- Less than 15 minutes late
- Cancelled
- 7.1%
- Of scheduled flights
- Average delay when late
- 78 min
- Flights arriving 15+ minutes late
- Flights tracked
- 84
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 78%
- Air traffic control & airport 22%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Tampa (TPA) to Boston (BOS)
Only 8 flights on record, which is too few for reliable odds.
- On-time arrivals
- 25.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 48 min
- Flights arriving 15+ minutes late
- Flights tracked
- 8
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 74%
- Airline (crew, maintenance, cleaning) 16%
- Late-arriving aircraft 10%
- 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 | 75.0% | 25 |
| October 2025 | 88.0% | 27 |
| November 2025 | 95.5% | 23 |
| December 2025 | 93.3% | 17 |
| January 2026 | 82.7% | 54 |
| February 2026 | 82.7% | 56 |
| March 2026 | 82.0% | 62 |
| April 2026 | 73.3% | 60 |
| May 2026 | 67.7% | 62 |
| June 2026 | 57.6% | 60 |
| July 2026 | 45.0% | 62 |
| August 2026 | 54.8% | 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