Flight DL668
Delta Air Lines flight DL668
Looking for DL668 in the air…
Alerts at this flight's airports
New York (JFK) to San Francisco (SFO)
Historically, this flight arrives 15+ minutes late 28% of the time, and when it is late the delay averages 66 minutes. It was cancelled 1.9% of the time.
- On-time arrivals
- 71.8%
- Less than 15 minutes late
- Cancelled
- 1.9%
- Of scheduled flights
- Average delay when late
- 66 min
- Flights arriving 15+ minutes late
- Flights tracked
- 359
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 53%
- Air traffic control & airport 41%
- Late-arriving aircraft 5%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Francisco (SFO) to New York (JFK)
Historically, this flight arrives 15+ minutes late 27% of the time, and when it is late the delay averages 93 minutes. It was cancelled 2.6% of the time.
- On-time arrivals
- 73.1%
- Less than 15 minutes late
- Cancelled
- 2.6%
- Of scheduled flights
- Average delay when late
- 93 min
- Flights arriving 15+ minutes late
- Flights tracked
- 346
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 45%
- Airline (crew, maintenance, cleaning) 30%
- Air traffic control & airport 25%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Kansas City (MCI) to Atlanta (ATL)
Only 3 flights on record, which is too few for reliable odds.
- On-time arrivals
- 33.3%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 78 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 54%
- Airline (crew, maintenance, cleaning) 46%
- Late-arriving aircraft 0%
- 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 | 83.3% | 60 |
| October 2025 | 83.9% | 62 |
| November 2025 | 67.8% | 59 |
| December 2025 | 51.1% | 49 |
| January 2026 | 80.0% | 58 |
| February 2026 | 75.0% | 56 |
| March 2026 | 80.0% | 62 |
| April 2026 | 62.5% | 56 |
| May 2026 | 75.4% | 62 |
| June 2026 | 69.6% | 60 |
| July 2026 | 67.8% | 62 |
| August 2026 | 65.6% | 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