Alaska Airlines AS3121 Flight Status
Based on Trip.com’s real-time data, the AS3121 flight operated by Alaska Airlines on Oct 23, 2026 is scheduled to fly from San Diego (SAN) to Denver (DEN). The flight is expected to depart at 20:19 (local time in San Diego, UTC-7) and land at 23:12 (local time in Denver, UTC-6) .
Thu, Oct 22
Fri, Oct 23
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Scheduled
Your flight will depart on time.
2h 40m
Check-in Counter
--
Boarding Gate
26
Arrival Gate
A40
Baggage
9
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Scheduled
Your flight will depart on time.
2h 40m
Check-in Counter
--
Boarding Gate
24
Arrival Gate
A40
Baggage
9
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Need a flight from San Diego to Denver?
Alaska Airlines From €85
Search flights Information provided by VariFlight For the latest updates, please refer to airport announcements or consult your airline. You can also explore more flights from San Diego to Denver or track other flights with our flight status tracker.
AS3121 Aircraft Details
According to Trip.com real-time data, the AS3121 flight flying from San Diego to Denver on 10/23/2026 is operated by the aircraft model Embraer 175. This aircraft has been in service for 10y, 10m. The aircraft is equipped with 76 seats.
Embraer 175
Punctuality (Departure)
65
%
Punctuality (Arrival)
94
%
Early on average
13 minutes
Age
10y, 10m
Seats
76
Distance
--
Economy
Premium Economy
First
Onboard Amenities
None
Inflight entertainment is available
Unknown
No power outlets are available
Seating Plan
81 cm
More legroom than on 77% of flights
46 cm
Seat width better than on 84% of flights
100°
Reclining Angle
2-2
Seat layout example
Onboard Amenities
Meal included
In-flight entertainment is unavailable
Wi-Fi is available
No power outlets are available
Seating Plan
89 cm
More legroom than on 62% of flights
46 cm
Seat width better than on 85% of flights
100°
Reclining Angle
--
Seat layout example
Onboard Amenities
Meal included
Inflight entertainment is available
Unknown
Power outlet
Seating Plan
107 cm
More legroom than on 94% of flights
51 cm
Seat width
120°
Reclining Angle
1-2
Seat layout example
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Flight History for AS3121
Trip.com historical records show that the last AS3121 flight departed on Thu, Oct 22 from SAN at approximately 20:19. This flight is expected to arrrive in DEN at 23:12.
| Date | Airport | Aircraft Type | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Sat, Oct 17 | San Diego (SAN) | Denver (DEN) | E75L | 18:55 | 21:49 | Arrived |
| Sun, Oct 18 | San Diego (SAN) | Denver (DEN) | E75L | 20:34 | 23:20 | Arrived |
| Mon, Oct 19 | San Diego (SAN) | Denver (DEN) | E75L | 21:13 | 00:01 | Arrived |
| Tue, Oct 20 | San Diego (SAN) | Denver (DEN) | E75L | 18:50 | 21:37 | Arrived |
| Wed, Oct 21 | San Diego (SAN) | Denver (DEN) | E75L | 18:42 | 21:33 | Arrived |
| Thu, Oct 22 | San Diego (SAN) | Denver (DEN) | E75L | 20:19 | 23:12 | Scheduled |
| Fri, Oct 23 | San Diego (SAN) | Denver (DEN) | E75L | 20:19 | 23:12 | Scheduled |
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AS3121 On-Time Performance
Based on the average performance of this flight over the past 30 trips, the on-time departure rate of AS3121 is 65% (Late on average 34 minutes), and the on-time arrival rate is 94% (Early on average 13 minutes).
On-Time Departures
Punctuality
65
%
Late on average
34 minutes
Early
0
%
On time
65
%
30 mins late
24
%
60 mins late
6
%
90 mins late
6
%
Cancelled
5
%
On-Time Arrivals
Punctuality
94
%
Early on average
13 minutes
Early
76
%
On time
18
%
30 mins late
0
%
60 mins late
6
%
90 mins late
0
%
Cancelled
5
%
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Frequently Asked Questions
What is the current status of flight as3121?
Flight as3121 has not departed yet and is currently on schedule. Scheduled departure 20:19, arrival 23:59 (updated Oct 23, 2026).Is flight as3121 on time today?
Flight as3121 has not departed yet and is currently on schedule. Scheduled departure is 20:19, with arrival at 23:59. Recheck gate and timing before you head to the airport.Has flight as3121 departed yet? What is the departure time?
Flight as3121 is scheduled to depart at 20:19. The latest actual or estimated departure time is 20:19, and the current status is Scheduled (updated Oct 23, 2026).When is flight as3121 scheduled to arrive?
Flight as3121 is scheduled to arrive at 23:59. The latest estimated or actual arrival time is 23:12. Status is Scheduled as of Oct 23, 2026.What is the gate information for flight as3121?
For flight as3121, the departure terminal is T2 and the boarding gate is 24. Gate assignments can change at short notice—confirm on airport screens before heading to security.What route does flight as3121 fly?
Flight as3121 is operated by Alaska Airlines from San Diego (SAN) to Denver (DEN). Typical flight time is about 2 hours40 minutes; operating days may include Friday.How can I check real-time status for flight as3121?
Track flight as3121 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 as3121 is delayed or canceled, what should I do?
If as3121 is delayed or canceled, first confirm the latest status here (Scheduled, updated Oct 23, 2026). Contact Alaska Airlines or your booking channel for rebooking or refund options, and check Trip.com Manage Booking if you booked on Trip.com.Has flight as3121 departed from San Diego?
Flight as3121 has not departed from San Diego (SAN) yet and is currently on schedule for 20:19.What is the seat configuration for flight as3121?
Flight as3121 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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Destination Info: Denver Weather & Time
Intermittent clouds
|
14°C - 22°C
Expected weather conditions upon arrival
1 hour time difference
Time on arrival: San Diego 22:12
|
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