DL668 SFO → JFK

Delta Air Lines · San Francisco, CA to New York, NY · 346 flights observed, 2025-07-01 to 2026-06-30 · 2,586 mi

This flight is usually on time, but has a real long-delay tail — typical (median) delay is -9 min, while the worst 10% run +52 min or later.

DL668 covers more than one route in the data window — the stats below are for SFO → JFK, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
78%
Median delay
-9 min
90th percentile
+52 min
Cancellation rate
3%

How often is DL668 on time?

Across 346 flights on SFO → JFK from 2025-07-01 to 2026-06-30, DL668 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +52 min or later. 3% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time25978%
16-30 min206%
31-60 min257%
61-120 min124%
2+ hrs185%

Performance by month

MonthFlightsOn-timeAvg delay
2025-072962%+30 min
2025-083077%+2 min
2025-093087%-10 min
2025-103181%-1 min
2025-112969%+28 min
2025-121867%+27 min
2026-012588%-13 min
2026-022685%-13 min
2026-033083%-9 min
2026-042875%+33 min
2026-053083%+10 min
2026-062871%+7 min

Performance by day of week

DayFlightsOn-time
Mon4777%
Tue5180%
Wed4980%
Thu4781%
Fri5076%
Sat4877%
Sun4271%

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…