About 1 in 14 DL 3972 flights from Pasco arrived 15+ minutes late, diverted or cancelled over the past year (7%); 0.0% were cancelled. The typical flight landed 15 minutes early.
DL 3972: PSC → SEA
Scheduled to leave Pasco at 5:25 a.m. local time, operated by SkyWest as OO 3972. Over the past year it arrived on time 93% of the time (255 flights), in line with other DL flights on the route at that hour (94%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 37 | 86% |
| Tuesday | 36 | 94% |
| Wednesday | 36 | 94% |
| Thursday | 36 | 89% |
| Friday | 36 | 94% |
| Saturday | 37 | 97% |
| Sunday | 37 | 95% |
Why it was late
All flights PSC → SEA · Connecting off DL 3972? Check the risk
Questions
How often is DL 3972 from PSC to SEA late?
Delta Air Lines 3972 from Pasco/Kennewick/Richland, WA to Seattle, WA arrived 15 or more minutes late, was diverted or was cancelled on 7% of 255 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.