About 1 in 3 DL 717 flights from San Francisco arrived 15+ minutes late, diverted or cancelled over the past year (40%); 1.3% were cancelled. The typical flight landed 2 minutes late.
DL 717: SFO → DTW
Scheduled to leave San Francisco at 2:40 p.m. local time. Over the past year it arrived on time 60% of the time (226 flights), better than other DL flights on the route at that hour (56%). Last seen in the data Aug 2, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 37 | 59% |
| Tuesday | 34 | 76% |
| Wednesday | 33 | 48% |
| Thursday | 34 | 53% |
| Friday | 33 | 58% |
| Saturday | 19 | — |
| Sunday | 36 | 64% |
Why it was late
All flights SFO → DTW · Connecting off DL 717? Check the risk
Questions
How often is DL 717 from SFO to DTW late?
Delta Air Lines 717 from San Francisco, CA to Detroit, MI arrived 15 or more minutes late, was diverted or was cancelled on 40% of 226 scheduled flights between September 2025 and August 2026. 1.3% 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.