Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
DL 3923 · Portland (PDX) → Seattle (SEA)
Sold by Delta, flown by SkyWest. Still flying: 43 of the last 56 days (Mon, Tue, Wed, Thu, Fri, Sun).
Arrives on time79%within 15 minutes, of 43 flights
Cancelled0.0%of scheduled flights
An hour or more late2%of flights that operated
When late, on average49 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport.
- Leaves PDX
- 20:44
- Arrives SEA
- 21:56
- Flight time
- 1h 12m
- Days flown, last 8 weeks
- 43 of 56
Each square is a day, Sat Jun 6 to Fri Jul 31, two weeks per row (each column is the same weekday); filled = flew.
How late it arrives
Share of flights that operated arriving more than this late.
Horizontal: minutes late at arrival (0 to 3 hours). Vertical: share of flights later than that.
Its hour at PDX
All flights leaving Portland (PDX) at 8–9 pm, wherever they’re going: 76% left within 15 minutes and 0.6% were cancelled (1,022 flights in the year). Other Delta flights on this route →
Upcoming forecasts
Our odds that this flight is late or cancelled on the days we publish.