About 1 in 8 DL 3728 flights from Salt Lake City arrived 15+ minutes late, diverted or cancelled over the past year (12%); 0.0% were cancelled. The typical flight landed 7 minutes early.
DL 3728: SLC → PSC
Scheduled to leave Salt Lake City at 4:20 p.m. local time, operated by SkyWest as OO 3728. Over the past year it arrived on time 88% of the time (338 flights), in line with other DL flights on the route at that hour (86%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 52 | 88% |
| Tuesday | 50 | 96% |
| Wednesday | 48 | 81% |
| Thursday | 48 | 90% |
| Friday | 50 | 82% |
| Saturday | 41 | 88% |
| Sunday | 49 | 90% |
Why it was late
All flights SLC → PSC · Connecting off DL 3728? Check the risk
Questions
How often is DL 3728 from SLC to PSC late?
Delta Air Lines 3728 from Salt Lake City, UT to Pasco/Kennewick/Richland, WA arrived 15 or more minutes late, was diverted or was cancelled on 12% of 338 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.