Alaska Airlines AS521 Flight Status
Based on Trip.com’s real-time data, the AS521 flight operated by Alaska Airlines on Nov 6, 2026 is scheduled to fly from Seattle (SEA) to San Jose (SJC). The flight is expected to depart at 14:53 and land at 16:36 .
Thu, Nov 5
Fri, Nov 6
Mon, Dec 14
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Arrived
The flight has arrived 14m early
2h 10m
Check-in Counter
ZONE 6,ZONE 7
Boarding Gate
N4
Arrival Gate
31
Baggage
B1
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Scheduled
Your flight will depart on time.
2h 10m
Check-in Counter
ZONE 6,ZONE 7
Boarding Gate
N13
Arrival Gate
34
Baggage
B1
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Alaska Airlines From PHP 4,101
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Cancelled
Please refer to the airline for the latest information
Check-in Counter
--
Boarding Gate
--
Arrival Gate
--
Baggage
--
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Track the Previous Flight Status: Scheduled
AS656
|
San Francisco (SFO)
Seattle (SEA)
Seattle (SEA)
Scheduled: 13:49
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AS521 Aircraft Details
According to Trip.com real-time data, the AS521 flight flying from Seattle to San Jose on 11/6/2026 is operated by the aircraft model Boeing 737-900. This aircraft has been in service for 12y, 6m. The aircraft is equipped with 154 seats.
Boeing 737-900
Punctuality (Departure)
73
%
Punctuality (Arrival)
100
%
Early on average
8 minutes
Age
12y, 6m
Seats
154
Distance
--
Economy
First
Onboard Amenities
Snacks
Inflight entertainment is available
Wi-Fi (additional charge)
USB port and power outlet
Seating Plan
--
Legroom
43 cm
Seat width
100°
Reclining Angle
3-3
Seat layout example
Onboard Amenities
Snacks
Inflight entertainment is available
Wi-Fi (additional charge)
USB port and power outlet
Seating Plan
104 cm
More legroom than on 52% of flights
53 cm
Seat width better than on 17% of flights
120°
Reclining Angle
2-2
Seat layout example
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Flight History for AS521
Trip.com historical records show that the last AS521 flight departed on Thu, Nov 5 from SEA at approximately 15:12. This flight is expected to arrrive in SJC at 16:49.
| Date | Airport | Aircraft Type | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Sat, Oct 31 | Seattle (SEA) | San Jose (SJC) | B39M | 13:54 | 15:40 | Arrived |
| Sun, Nov 1 | Seattle (SEA) | San Jose (SJC) | 738 | 15:02 | 16:41 | Arrived |
| Mon, Nov 2 | Seattle (SEA) | San Jose (SJC) | 738 | 14:58 | 16:48 | Arrived |
| Tue, Nov 3 | Seattle (SEA) | San Jose (SJC) | 738 | 15:03 | 16:48 | Arrived |
| Wed, Nov 4 | Seattle (SEA) | San Jose (SJC) | 738 | 15:06 | 16:52 | Arrived |
| Thu, Nov 5 | Seattle (SEA) | San Jose (SJC) | 739 | 15:12 | 16:49 | Arrived |
| Fri, Nov 6 | Seattle (SEA) | San Jose (SJC) | 739 | 14:53 | 16:36 | Scheduled |
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AS521 On-Time Performance
Based on the average performance of this flight over the past 30 trips, the on-time departure rate of AS521 is 73% (Late on average 22 minutes), and the on-time arrival rate is 100% (Early on average 8 minutes).
On-Time Departures
Punctuality
73
%
Late on average
22 minutes
Early
0
%
On time
73
%
30 mins late
27
%
60 mins late
0
%
90 mins late
0
%
Cancelled
0
%
On-Time Arrivals
Punctuality
100
%
Early on average
8 minutes
Early
73
%
On time
27
%
30 mins late
0
%
60 mins late
0
%
90 mins late
0
%
Cancelled
0
%
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Frequently Asked Questions
What is the current status of flight as521?
Flight as521 has not departed yet and is currently on schedule. Scheduled departure 14:53, arrival 17:03 (updated Nov 6, 2026).Is flight as521 on time today?
Flight as521 has not departed yet and is currently on schedule. Scheduled departure is 14:53, with arrival at 17:03. Recheck gate and timing before you head to the airport.Has flight as521 departed yet? What is the departure time?
Flight as521 is scheduled to depart at 14:53. The latest actual or estimated departure time is 14:53, and the current status is Scheduled (updated Nov 6, 2026).When is flight as521 scheduled to arrive?
Flight as521 is scheduled to arrive at 17:03. The latest estimated or actual arrival time is 16:36. Status is Scheduled as of Nov 6, 2026.What is the baggage carousel number for flight as521?
After arrival, baggage for flight as521 is expected at carousel B1 in terminal B. Carousel numbers are assigned close to landing and may change—follow airport signs on arrival.What route does flight as521 fly?
Flight as521 is operated by Alaska Airlines from Seattle (SEA) to San Jose (SJC). Typical flight time is about 2 hours10 minutes; operating days may include Friday.How can I check real-time status for flight as521?
Track flight as521 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 as521 is delayed or canceled, what should I do?
If as521 is delayed or canceled, first confirm the latest status here (Scheduled, updated Nov 6, 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 as521 departed from Seattle?
Flight as521 has not departed from Seattle (SEA) yet and is currently on schedule for 14:53.What is the seat configuration for flight as521?
Flight as521 usually flies a Boeing 737-900 with seat layout 3-3. 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: San Jose Weather & Time
Partly cloudy
|
8°C - 23°C
Expected weather conditions upon arrival
0 hour time difference
Time on arrival: Seattle 16:36
|
San Jose 16:36
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