Delta Air Lines DL3959 Flight status
According to Trip.com real-time data, the DL3959 flight operated by Delta Air Lines on Sep 20, 2026 is scheduled to fly from Seattle (SEA) to Boise (BOI). The flight is expected to depart at 12:39 (local time in Seattle, UTC-7) and land at 14:43 (local time in Boise, UTC-6)
Sat, Sep 19
Sun, Sep 20
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En route
Your flight has departed Seattle and is expected to arrive in Boise at 15:14.
1h 37m
Check-in Counter
ZONE 3
Boarding Gate
B4
Arrival Gate
B20
Baggage
--
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Scheduled
Your flight will depart on time.
1h 37m
Check-in Counter
ZONE 3
Boarding Gate
A6
Arrival Gate
B20
Baggage
--
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Information provided by VariFlight. Please refer to airport announcements for the most up-to-date information.
DL3959 Aircraft Details
According to Trip.com real-time data, the DL3959 flight flying from Seattle to Boise on 9/20/2026 is operated by the aircraft model Embraer 175. This aircraft has been in service for 7y, 11m. The aircraft is equipped with 76 seats.
Embraer 175
Punctuality (Departure)
70%
Punctuality (Arrival)
83%
Early on average
3 minutes
Age
7y, 11m
Seats
76
Flight Distance
--
Economy
First
Premium Economy
In-Flight Services
Snacks
In-flight entertainment is unavailable
Wi-Fi (additional charge)
Power outlet
Seat Information
79 cm
Legroom
46 cm
Seat width better than on 69% of flights
100°
Reclining Angle
2-2
Seat layout example
In-Flight Services
Snacks
In-flight entertainment is unavailable
Wi-Fi (additional charge)
Power outlet
Seat Information
94 cm
More legroom than on 14% of flights
51 cm
Seat width
135°
Reclining Angle
1-2
Seat layout example
In-Flight Services
None
In-flight entertainment is unavailable
Wi-Fi is available
No power outlets are available
Seat Information
86 cm
Legroom
46 cm
Seat width better than on 63% of flights
120°
Reclining Angle
--
Seat layout example
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Flight History for DL3959
Trip.com historical records show that the last DL3959 flight departed on Sat, Sep 19 from SEA at approximately 13:15. This flight is expected to arrrive in BOI at 15:14.
| Date | Airport | Aircraft Model | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Mon, Sep 14 | Seattle (SEA) | Boise (BOI) | E75L | 14:05 | 16:07 | Arrived |
| Tue, Sep 15 | Seattle (SEA) | Boise (BOI) | E75L | 12:59 | 14:59 | Arrived |
| Wed, Sep 16 | Seattle (SEA) | Boise (BOI) | E75L | 12:52 | 14:59 | Arrived |
| Thu, Sep 17 | Seattle (SEA) | Boise (BOI) | E75L | 13:42 | 17:45 | Arrived |
| Fri, Sep 18 | Seattle (SEA) | Boise (BOI) | E75L | 14:33 | 16:35 | Arrived |
| Sat, Sep 19 | Seattle (SEA) | Boise (BOI) | E75L | 13:15 | 15:14 | En route |
| Sun, Sep 20 | Seattle (SEA) | Boise (BOI) | E7W | 12:39 | 14:43 | Scheduled |
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DL3959 On-Time Performance
Based on the average performance of this flight over the past 30 trips, the on-time departure rate of DL3959 is 70% (Late on average 30 minutes), and the on-time arrival rate is 83% (Early on average 3 minutes).
On-Time Departures
Punctuality
70%
Late on average 30 minutes
Early
0%
On time
70%
30 mins late
13%
60 mins late
13%
90 mins late
3%
Cancelled
0%
On-Time Arrivals
Punctuality
83%
Early on average 3 minutes
Early
83%
On time
0%
30 mins late
10%
60 mins late
3%
90 mins late
3%
Cancelled
0%
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Flight FAQs
What is the current status of flight dl3959?
Flight dl3959 has not departed yet and is currently on schedule. Scheduled departure 12:39, arrival 15:16 (updated Sep 20, 2026).Is flight dl3959 on time today?
Flight dl3959 has not departed yet and is currently on schedule. Scheduled departure is 12:39, with arrival at 15:16. Recheck gate and timing before you head to the airport.Has flight dl3959 departed yet? What is the departure time?
Flight dl3959 is scheduled to depart at 12:39. The latest actual or estimated departure time is 12:39, and the current status is Scheduled (updated Sep 20, 2026).When is flight dl3959 scheduled to arrive?
Flight dl3959 is scheduled to arrive at 15:16. The latest estimated or actual arrival time is 14:43. Status is Scheduled as of Sep 20, 2026.What route does flight dl3959 fly?
Flight dl3959 is operated by Delta Air Lines from Seattle (SEA) to Boise (BOI). Typical flight time is about 1 hour 37 minutes; operating days may include Sunday.How can I check real-time status for flight dl3959?
Track flight dl3959 on this Trip.com status page for live departure, arrival, gate and baggage updates. For push alerts on the go, open the same flight in the Trip.com App and turn on flight notifications.If flight dl3959 is delayed or canceled, what should I do?
If dl3959 is delayed or canceled, first confirm the latest status here (Scheduled, updated Sep 20, 2026). Contact Delta Air Lines or your booking channel for rebooking or refund options, and check Trip.com Manage Booking if you booked on Trip.com.Has flight dl3959 departed from Seattle?
Flight dl3959 has not departed from Seattle (SEA) yet and is currently on schedule for 12:39.What is the seat configuration for flight dl3959?
Flight dl3959 usually flies a Embraer 175 with seat layout 2-2. Layouts can differ by aircraft subtype and cabin product—confirm your seat map in Manage Booking after you purchase.
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Arrival Info: Boise Weather & Current Time
Mostly clear
|
13°C - 25°C
Weather forecast for your arrival day
1 hour time difference
Time on arrival: Seattle 13:43| Boise 14:43
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