Flight DL1643
Delta Air Lines flight DL1643
Looking for DL1643 in the air…
Alerts at this flight's airports
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Advisory Coastal Flood Statement FLL
COASTAL FLOOD STATEMENT NOW IN EFFECT THROUGH THURSDAY EVENING
Weather
New York (JFK) to Austin (AUS)
Historically, this flight arrives 15+ minutes late 15% of the time, and when it is late the delay averages 60 minutes. It was cancelled 2.0% of the time.
- On-time arrivals
- 84.6%
- Less than 15 minutes late
- Cancelled
- 2.0%
- Of scheduled flights
- Average delay when late
- 60 min
- Flights arriving 15+ minutes late
- Flights tracked
- 247
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 46%
- Airline (crew, maintenance, cleaning) 39%
- Late-arriving aircraft 10%
- Extreme weather 4%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Austin (AUS) to New York (JFK)
Historically, this flight arrives 15+ minutes late 23% of the time, and when it is late the delay averages 79 minutes. It was cancelled 1.8% of the time.
- On-time arrivals
- 77.2%
- Less than 15 minutes late
- Cancelled
- 1.8%
- Of scheduled flights
- Average delay when late
- 79 min
- Flights arriving 15+ minutes late
- Flights tracked
- 225
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 40%
- Airline (crew, maintenance, cleaning) 32%
- Late-arriving aircraft 27%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Las Vegas (LAS) to Los Angeles (LAX)
Historically, this flight arrives 15+ minutes late 15% of the time, and when it is late the delay averages 71 minutes. It was cancelled 5.6% of the time.
- On-time arrivals
- 85.3%
- Less than 15 minutes late
- Cancelled
- 5.6%
- Of scheduled flights
- Average delay when late
- 71 min
- Flights arriving 15+ minutes late
- Flights tracked
- 36
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 82%
- Airline (crew, maintenance, cleaning) 16%
- Air traffic control & airport 2%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Seattle (SEA) to Los Angeles (LAX)
Historically, this flight arrives 15+ minutes late 17% of the time, and when it is late the delay averages 59 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 83.3%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 59 min
- Flights arriving 15+ minutes late
- Flights tracked
- 24
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 59%
- Airline (crew, maintenance, cleaning) 27%
- Air traffic control & airport 14%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Francisco (SFO) to Atlanta (ATL)
Only 13 flights on record, which is too few for reliable odds.
- On-time arrivals
- 81.8%
- Less than 15 minutes late
- Cancelled
- 7.7%
- Of scheduled flights
- Average delay when late
- 417 min
- Flights arriving 15+ minutes late
- Flights tracked
- 13
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 92%
- Late-arriving aircraft 8%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Atlanta (ATL) to Fort Lauderdale (FLL)
Only 12 flights on record, which is too few for reliable odds.
- On-time arrivals
- 90.9%
- Less than 15 minutes late
- Cancelled
- 8.3%
- Of scheduled flights
- Average delay when late
- 121 min
- Flights arriving 15+ minutes late
- Flights tracked
- 12
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 50%
- Airline (crew, maintenance, cleaning) 48%
- 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 | 86.9% | 62 |
| November 2025 | 87.7% | 57 |
| December 2025 | 87.0% | 47 |
| January 2026 | 75.0% | 10 |
| February 2026 | 81.8% | 23 |
| March 2026 | 89.7% | 31 |
| April 2026 | 85.7% | 28 |
| May 2026 | 79.2% | 55 |
| June 2026 | 80.0% | 60 |
| July 2026 | 61.4% | 62 |
| August 2026 | 71.2% | 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