ON TIMEBOARD

DL 672 on time

Delta Air Lines 672: Atlanta to San Francisco at 9:40 a.m. (past 12 months)

On time
68%
185 flights · likely 61–74%
Cancelled
0.0%
of scheduled flights
Typical arrival
+4 min
median vs schedule
When late
+51 min
average delay
Similar flights
61%
DL, same route & hour

About 1 in 3 DL 672 flights from Atlanta arrived 15+ minutes late, diverted or cancelled over the past year (32%); 0.0% were cancelled. The typical flight landed 4 minutes late.

DL 672: ATL → SFO

Scheduled to leave Atlanta at 9:40 a.m. local time. Over the past year it arrived on time 68% of the time (185 flights), better than other DL flights on the route at that hour (61%). Last seen in the data Aug 31, 2026.

Month by month

30%65%100%Apr 2025: too few flights (2 flights)AprMay 2025: too few flights (1 flights)MayJun 2025: 80% on time (20 flights)80JunJul 2025: 70% on time (27 flights)70JulAug 2025: 76% on time (29 flights)76AugSep 2025: 77% on time (22 flights)77SepOct 2025: 77% on time (31 flights)77OctNov 2025: 90% on time (30 flights)90NovDec 2025: 84% on time (19 flights)84DecJun 2026: 43% on time (21 flights)43JunJul 2026: 45% on time (31 flights)45JulAug 2026: 58% on time (31 flights)58Aug

By day of week

DayFlightsOn time
Monday2662%
Tuesday2584%
Wednesday2564%
Thursday2752%
Friday2767%
Saturday2778%
Sunday2868%

Why it was late

Air traffic & airport (NAS) 55%Airline (crew, maintenance, ops) 37%Late inbound plane 8%Severe weather 1%

All flights ATL → SFO · Connecting off DL 672? Check the risk

Questions

How often is DL 672 from ATL to SFO late?

Delta Air Lines 672 from Atlanta, GA to San Francisco, CA arrived 15 or more minutes late, was diverted or was cancelled on 32% of 185 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.

Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Delta Air Lines for today's flight. Method.