Delta Air Lines DL3987 Flight Status
According to Trip.com latest record on status for Delta Air Lines flight DL3987 from Seattle to Los Angeles (SEA-ONT): Flights for Oct 30, 2026 are scheduled, with the next departure slated for 19:56 from SEA and an expected arrival at 22:11 at ONT .
Thu, Oct 29
Fri, Oct 30
Sat, Oct 31
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Arrived
The flight arrived 9m early.
2h 47m
Check-in Counter
ZONE 3
Boarding Gate
B6
Arrival Gate
208
Baggage
22
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Scheduled
Your flight will depart on time.
2h 47m
Check-in Counter
ZONE 3
Boarding Gate
B6
Arrival Gate
208
Baggage
--
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Scheduled
Your flight will depart on time.
2h 47m
Check-in Counter
ZONE 3
Boarding Gate
A2
Arrival Gate
208
Baggage
--
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DL3987
DL3987 Aircraft Specifications
According to Trip.com real-time data, the DL3987 flight from Seattle to Los Angeles on 10/30/2026 is operated using the aircraft model Embraer 175. This aircraft has been in service for 8y. The aircraft has 76 seats.
Embraer 175
On-Time Departure
83
%
On-Time Arrival
96
%
Avg. Early
10 minutes
Aircraft Age
8y
Total Seats
76
Flight Distance
--
Economy
First
Premium Economy
Cabin Amenities
None
In-flight entertainment is unavailable
Wi-Fi (additional charge)
USB port and power outlet
Seat Information
79 cm
More legroom than on 5% of flights
46 cm
Seat width better than on 86% of flights
100°
Reclining Angle
2-2
Seat layout example
Cabin Amenities
Meal included
In-flight entertainment is unavailable
Wi-Fi (additional charge)
USB port and power outlet
Seat Information
94 cm
More legroom than on 43% of flights
51 cm
Seat width
135°
Reclining Angle
1-2
Seat layout example
Cabin Amenities
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 75% of flights
120°
Reclining Angle
--
Seat layout example
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DL3987 Flight History
Trip.com historical records show that the last DL3987 flight departed on Thu, Oct 29 from SEA at approximately 20:14. This flight is expected to arrrive in ONT at 22:34.
| Date | Airport | Aircraft Model | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Sun, Oct 25 | Seattle (SEA) | Los Angeles (ONT) | E75S | 20:30 | 22:45 | Arrived |
| Mon, Oct 26 | Seattle (SEA) | Los Angeles (ONT) | E75L | 20:19 | 22:25 | Arrived |
| Tue, Oct 27 | Seattle (SEA) | Los Angeles (ONT) | E75L | 20:25 | 22:35 | Arrived |
| Wed, Oct 28 | Seattle (SEA) | Los Angeles (ONT) | E75L | 20:07 | 22:21 | Arrived |
| Thu, Oct 29 | Seattle (SEA) | Los Angeles (ONT) | E75L | 20:14 | 22:34 | Arrived |
| Fri, Oct 30 | Seattle (SEA) | Los Angeles (ONT) | E75L | 19:56 | 22:11 | Scheduled |
| Sat, Oct 31 | Seattle (SEA) | Los Angeles (ONT) | E7W | 19:56 | 22:43 | Scheduled |
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DL3987 On-Time Performance
Based on the average performance of this flight over the last 30 trips, the on-time departure rate of DL3987 is 83% (Late on average 24 minutes), and the on-time arrival rate is 96% (Early on average 10 minutes).
On-Time Departures
Punctuality
83
%
Late on average
24 minutes
Early
0
%
On time
83
%
30 mins late
13
%
60 mins late
0
%
90 mins late
4
%
Cancelled
0
%
On-Time Arrivals
Punctuality
96
%
Early on average
10 minutes
Early
83
%
On time
13
%
30 mins late
0
%
60 mins late
0
%
90 mins late
4
%
Cancelled
0
%
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Flight FAQs
What is the current status of flight dl3987?
Flight dl3987 has not departed yet and is currently on schedule. Scheduled departure 19:56, arrival 22:43 (updated Oct 30, 2026).Is flight dl3987 on time today?
Flight dl3987 has not departed yet and is currently on schedule. Scheduled departure is 19:56, with arrival at 22:43. Recheck gate and timing before you head to the airport.Has flight dl3987 departed yet? What is the departure time?
Flight dl3987 is scheduled to depart at 19:56. The latest actual or estimated departure time is 19:56, and the current status is Scheduled (updated Oct 30, 2026).When is flight dl3987 scheduled to arrive?
Flight dl3987 is scheduled to arrive at 22:43. The latest estimated or actual arrival time is 22:11. Status is Scheduled as of Oct 30, 2026.What route does flight dl3987 fly?
Flight dl3987 is operated by Delta Air Lines from Seattle (SEA) to Los Angeles (ONT). Typical flight time is about 2 hours 47 minutes; operating days may include Friday.How can I check real-time status for flight dl3987?
Track flight dl3987 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 dl3987 is delayed or canceled, what should I do?
If dl3987 is delayed or canceled, first confirm the latest status here (Scheduled, updated Oct 30, 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 dl3987 departed from Seattle?
Flight dl3987 has not departed from Seattle (SEA) yet and is currently on schedule for 19:56.What is the seat configuration for flight dl3987?
Flight dl3987 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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