Is DL3959 delayed?
Service date: · Scheduled departure date (America/Los_Angeles)
Arrived
2 min early
Official source · Updated
Departure
Seattle
SEA
Actual
Scheduled 13:04
Sep 10
Arrival
Boise
BOI
Actual
Scheduled 21:04
Sep 10
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
SEABOI
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 6 min early
SEA → BOI
- 3 min early
SEA → BOI
- 10 min late
SEA → BOI
- 7 min early
SEA → BOI
- 37 min early
SEA → BOI
Flight history and details
Aug 18, 2026 — Sep 17, 2026
- Observed arrivals
- 15
- Arrivals over 15 minutes late
- 2
- Observed cancellations
- 0
- Observed occurrences
- 27
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 | Boise | -6 | |
| Sep 15, 2026Arrived | Seattle | Boise | -3 | |
| Sep 14, 2026Arrived | Seattle | Boise | 10 | |
| Sep 12, 2026Arrived | Seattle | Boise | -7 | |
| Sep 11, 2026Arrived | Seattle | Boise | -37 | |
| Sep 10, 2026Arrived | Seattle | Boise | -2 | |
| Sep 9, 2026Arrived | Seattle | Boise | -20 | |
| Sep 8, 2026Arrived | Seattle | Boise | 7 | |
| Sep 7, 2026Arrived | Seattle | Boise | 62 | |
| Sep 6, 2026Arrived | Seattle | Boise | -11 | |
| Sep 5, 2026Arrived | Seattle | Boise | -38 | |
| Sep 4, 2026Arrived | Seattle | Boise | 36 | |
| Sep 1, 2026Arrived | Seattle | Boise | -3 | |
| Aug 31, 2026Arrived | Seattle | Boise | -9 | |
| Aug 26, 2026Arrived | Seattle | Boise | -18 |