Flight profile · Delta Air Lines
DL668
New York (JFK) to San Francisco (SFO) · scheduled 7:00 AM – 10:16 AM
How DL668 performs
748 operations, 2024-03-10 to 2026-06-30.
DL668 arrived on time 82.4% of the time, against 77.3% for all JFK → SFO flights — this specific departure is 5.1 percentage points better than the route as a whole. Against Delta Air Lines’s own flights on this route it is 4.7 points better.
Source: US DOT Bureau of Transportation Statistics · 748 operations between 2024-03-10 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL668 | 82.4% | 1.20% | -11 min | 4.9% | 748 |
| Delta Air Lines on JFK → SFO | 77.7% | 0.83% | -10 min | 8.4% | 6,718 |
| All JFK → SFO flights | 77.3% | 1.20% | -10 min | 8.3% | 20,197 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-03-10 to 2026-06-30
Other routes DL668 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| SFO→JFK San Francisco to New York | 2024-03-10 – 2026-06-30 | 532 | 74.5% |
| MCI→ATL Kansas City to Atlanta | 2025-12-20 – 2026-01-03 | 3 | — |
| JFK→LAS New York to Las Vegas | 2024-05-09 – 2024-06-06 | 17 | — |
| AUS→JFK Austin to New York | 2024-04-09 – 2024-05-06 | 28 | — |
| RDU→SLC Raleigh–Durham to Salt Lake City | 2024-01-08 – 2024-03-09 | 62 | — |
| SLC→RDU Salt Lake City to Raleigh–Durham | 2024-01-08 – 2024-03-09 | 62 | — |
| JFK→DEN New York to Denver | 2023-07-01 – 2024-01-06 | 187 | 86.3% |
Because the same number has served different journeys, the statistics above describe only the route DL668 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 748 records of DL668 operating JFK → SFO, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.