| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jul 30 | SEA | BOI | 12:30 | 15:11 |
Scheduled
|
Track > |
| Jul 29 | SEA | BOI | 12:41 | 14:52 |
Landed
|
Track > |
| Jul 28 | SEA | BOI | 14:29 | 16:32 |
Delayed
|
Track > |
| Jul 27 | SEA | BOI | 14:25 | 16:30 |
Delayed
|
Track > |
| Jul 26 | SEA | BOI | 12:43 | 14:57 |
Landed
|
Track > |
| Jul 25 | SEA | BOI | 13:45 | 15:48 |
Landed Late
|
Track > |
| Jul 24 | SEA | BOI | 13:30 | 15:38 |
Landed Late
|
Track > |
| Jul 23 | SEA | BOI | 12:57 | 15:07 |
Landed
|
Track > |
| Jul 22 | SEA | BOI | 12:48 | 14:57 |
Landed
|
Track > |
| Jul 21 | SEA | BOI | 12:39 | 14:42 |
Landed
|
Track > |
Delta Air Lines Flight DL3959 connects Seattle, United States to Boise, United States, taking off from Seattle Tacoma International Airport SEA and landing at Boise Airport BOI.
How long is the DL3959 flight from Seattle to Boise?
The average flight time from Seattle to Boise is 1 hour and 7 minutes. The flight distance is 641 km / 398 miles and the average flight speed is 554 km/h / 344 mph.
What is the On-Time Performance (OTP) of Delta Air Lines Flight DL3959 Seattle to Boise?
The Airportia On-Time Performance Rating for Delta Air Lines Flight DL3959 is 4.6/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest DL3959 flight?
The latest flight took off on Thursday, July 30th, 2026 with the flight status being Scheduled on 15:11.
How else can the flight DL3959 be referenced as?
This Delta Air Lines flight can also be referenced as DAL3959, DL 3959, DAL 3959.
How often is flight DL3959 delayed?
On average, 40% of all DL3959 flights are delayed. The average delay is 56 minutes.
Can I get compensation for my delayed or cancelled DL3959 flight or baggage issues?
If your DL3959 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our DL3959 Flight Tracker above for more details.
Flight DL3959 is code-shared by 3 airlines using the flight numbers AF8817, KE3112, WS8572
Other flights departing from Seattle SEA: WN3616, AS3220, AS2291, AA2534
Other flights arriving at Boise BOI: AA1531, DL3773, AS2157, WN418
All flights connecting Seattle SEA to Boise BOI.
