Alaska Airlines AS521 Flight status
According to real-time data from Trip.com, flight AS521, operated by Alaska Airlines, scheduled to fly from San Jose (SJC) to Seattle (SEA), has been cancelled. Please contact the airline or airport counter for the latest information.
Mon, Dec 14
Access more flight status info on the Trip.com app
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Canceled
Please refer to the airline for the latest information
Check-in Counter
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Boarding Gate
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Arrival Gate
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Baggage
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AS521
Flight got cancelled? Book an alternate flight to Seattle:
-
Thu, Dec 10San Jose (SJC)Seattle (SEA)
Alaska Airlines
One way27% offBRL 452BRL 330
-
Tue, Nov 24San Jose (SJC)Seattle (SEA)
Delta Air Lines
One way26% offBRL 452BRL 333 -
Fri, Nov 20San Jose (SJC)Seattle (SEA)
Hahn Air
One way16% offBRL 452BRL 381 -
Thu, Dec 3San Jose (SJC)Seattle (SEA)
Alaska Airlines
One way12% offBRL 452BRL 397
-
Thu, Nov 12San Jose (SJC)Seattle (SEA)
Alaska Airlines
One way12% offBRL 452BRL 400
-
Wed, Nov 11San Jose (SJC)Seattle (SEA)
Alaska Airlines
One way11% offBRL 452BRL 402
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AS521 Aircraft Details
According to Trip.com real-time data, the AS521 flight from San Jose to Seattle on 10/29/2026 is operated using the aircraft model Boeing 737. This aircraft has been in service for 5y, 5m. The aircraft has Up to 205 seats.
Boeing 737
Punctuality (Departure)
87
%
Punctuality (Arrival)
100
%
Early on average
15 minutes
Age
5y, 5m
Seats
Up to 205
Flight Distance
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Economy
Premium Economy
First
In-Flight Services
Meal included
In-flight entertainment is unavailable
Wi-Fi is available
USB port and power outlet
Seat Information
--
Legroom
43 cm
Seat width
100°
Reclining Angle
--
Seat layout example
In-Flight Services
Meal included
In-flight entertainment is unavailable
Wi-Fi is available
USB port and power outlet
Seat Information
89 cm
Legroom
43 cm
Seat width
100°
Reclining Angle
--
Seat layout example
In-Flight Services
Meal included
In-flight entertainment is unavailable
Wi-Fi is available
USB port and power outlet
Seat Information
104 cm
Legroom
53 cm
Seat width
120°
Reclining Angle
--
Seat layout example
See more amenities and seat info in the app
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AS521 On-Time Performance
Based on the average performance of this flight over the last 30 trips, the on-time departure rate of AS521 is 87% (Late on average 13 minutes), and the on-time arrival rate is 100% (Early on average 15 minutes).
On-Time Departures
Punctuality
87
%
Late on average
13 minutes
Early
3
%
On time
83
%
30 mins late
13
%
60 mins late
0
%
90 mins late
0
%
Cancelled
0
%
On-Time Arrivals
Punctuality
100
%
Early on average
15 minutes
Early
80
%
On time
20
%
30 mins late
0
%
60 mins late
0
%
90 mins late
0
%
Cancelled
0
%
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Flight FAQs
What is the current status of flight as521?
Flight as521 has been canceled (status: Canceled). Contact Alaska Airlines or your booking channel for rebooking or refund (updated Oct 29, 2026).Is flight as521 on time today?
Flight as521 has been canceled (status: Canceled). Contact Alaska Airlines or your booking channel for rebooking or refund options; if booked on Trip.com, use Manage Booking.Has flight as521 departed yet? What is the departure time?
Flight as521 is scheduled to depart at 14:50. The latest actual or estimated departure time is 14:50, and the current status is Canceled (updated Oct 29, 2026).When is flight as521 scheduled to arrive?
Flight as521 is scheduled to arrive at 17:01. The latest estimated or actual arrival time is 17:01. Status is Canceled as of Oct 29, 2026.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 (Canceled, updated Oct 29, 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 San Jose?
Flight as521 has been canceled and did not depart from San Jose (SJC). Contact Alaska Airlines or your booking channel for next steps.
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Arrival Info: Seattle Weather & Current Time
Mostly clear
|
7°C - 13°C
Weather forecast for your arrival day
- hour time difference
Time on arrival: San Jose 17:01
|
Seattle 17:01
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