Is DAL3997 delayed?
Service date: · Scheduled departure date (America/Los_Angeles)
Arrived
21 min early
Official source · Updated
Departure
Seattle
SEA
Actual
Scheduled 19:31
Sep 15
Arrival
Portland
PDX
Actual
Scheduled 02:59
Sep 16
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
SEAPDX
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 13 min late
SEA → PDX
- 21 min early
SEA → PDX
- 54 min late
SEA → PDX
- 6 min early
SEA → PDX
- 22 min late
SEA → PDX
Flight history and details
Aug 18, 2026 — Sep 17, 2026
- Observed arrivals
- 9
- Arrivals over 15 minutes late
- 2
- Observed cancellations
- 0
- Observed occurrences
- 9
Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 16, 2026Arrived | Seattle | Portland | 13 | |
| Sep 15, 2026Arrived | Seattle | Portland | -21 | |
| Sep 14, 2026Arrived | Seattle | Portland | 54 | |
| Sep 13, 2026Arrived | Seattle | Portland | -6 | |
| Sep 12, 2026Arrived | Seattle | Portland | 22 | |
| Sep 11, 2026Arrived | Seattle | Portland | 1 | |
| Sep 10, 2026Arrived | Seattle | Portland | -10 | |
| Sep 9, 2026Arrived | Seattle | Portland | -6 | |
| Sep 8, 2026Arrived | Seattle | Portland | -15 |