Apparatus

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flight_takeoff Flight

ASA521

Operated by Alaska Airlines

Live map

Live map filtered to ASA521. Shown when the flight is currently airborne.

Route airports View route page →

Departure

AUS KAUS VFR

Austin Bergstrom International Airport

Austin, US

Local time
13:02 CDT
Timezone
America/Chicago
Type
Large Airport
Elevation
542 ft
Coordinates
30.1975, -97.6620

cloud Weather

Wind
300° / 6 kt
Visibility
10 SM
Ceiling
FEW 6,000 ft, FEW 10,000 ft, SCT 20,000 ft
Temp / Dew
35°C / 19°C
Altimeter
30.04 inHg

Obs: 2026-08-28T17:53:00.000Z

Raw METAR / TAF 
METAR KAUS 281753Z 30006KT 10SM FEW060 FEW100 SCT200 35/19 A3004 RMK AO2 SLP159 ACC NE T03500194 10350 20244 58002

TAF KAUS 281736Z 2818/2924 VRB04KT P6SM SCT040 BKN250 FM282000 10007KT P6SM SCT040 BKN250 PROB30 2821/2824 VRB15G25KT 4SM TSRA BKN050CB FM290000 14008KT P6SM -SHRA SCT250 FM290200 19006KT P6SM SCT250 FM290600 VRB03KT P6SM SCT250 FM291600 19006KT P6SM SCT250

Arrival

SEA KSEA MVFR

Seattle–Tacoma International Airport

Seattle, US

Local time
11:02 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
433 ft
Coordinates
47.4479, -122.3103

cloud Weather

Wind
240° / 5 kt
Visibility
10 SM
Ceiling
BKN 2,100 ft, BKN 2,600 ft, OVC 4,500 ft
Temp / Dew
17°C / 12°C
Altimeter
30.08 inHg

Obs: 2026-08-28T17:53:00.000Z

Raw METAR / TAF 
METAR KSEA 281753Z 24005KT 10SM BKN021 BKN026 OVC045 17/12 A3008 RMK AO2 SLP191 T01720122 10172 20139 58000 $

TAF KSEA 281727Z 2818/2924 22005KT P6SM BKN025 BKN035 FM282100 26006KT P6SM BKN050 FM290200 32006KT P6SM BKN050 FM290800 19007KT P6SM -SHRA OVC035 FM291100 19006KT P6SM -SHRA BKN025 OVC030 FM291800 21007KT P6SM -SHRA SCT020 OVC030

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-25 ACF846 AUS → SEA Jul 25, 21:53 UTCJul 25, 23:03 UTC1h 10m +37m -5m
2026-07-25 ACF846 AUS → SEA Jul 25, 21:40 UTCJul 25, 23:15 UTC1h 35m - -
2026-07-24 ACBE34 AUS → SEA Jul 24, 21:30 UTCJul 24, 23:05 UTC1h 35m - -
2026-07-23 A715C6 AUS → SEA Jul 23, 22:35 UTCJul 24, 00:20 UTC1h 45m - -
2026-07-23 A715C6 AUS → SEA Jul 23, 22:00 UTCJul 24, 00:06 UTC2h 6m +44m +18m
2026-07-22 A28A2C AUS → SEA Jul 22, 22:35 UTCJul 23, 00:10 UTC1h 35m - -
2026-07-21 AD639E AUS → SEA Jul 21, 21:30 UTCJul 21, 23:05 UTC1h 35m - -
2026-07-20 A2B562 AUS → SEA Jul 20, 21:50 UTCJul 20, 23:25 UTC1h 35m - -
2026-07-19 A9CECD AUS → SEA Jul 19, 21:45 UTCJul 19, 23:15 UTC1h 30m - -
2026-07-19 A9CECD AUS → SEA Jul 19, 21:44 UTCJul 19, 23:09 UTC1h 25m +28m +7m
2026-07-18 A30460 AUS → SEA Jul 18, 22:08 UTCJul 18, 23:13 UTC1h 5m +52m -12m
2026-07-18 A30460 AUS → SEA Jul 18, 21:55 UTCJul 18, 23:30 UTC1h 35m - -
2026-07-17 A97608 AUS → SEA Jul 17, 21:50 UTCJul 17, 23:25 UTC1h 35m - -
2026-07-17 ACA948 SJC → SEA Jul 17, 00:45 UTCJul 17, 02:25 UTC1h 40m - -
2026-07-15 ACFFB4 SJC → SEA Jul 15, 21:45 UTCJul 15, 23:15 UTC1h 30m - -
2026-07-14 A9A397 SJC → SEA Jul 14, 21:30 UTCJul 14, 23:00 UTC1h 29m - -
2026-07-14 A9A397 SJC → SEA Jul 14, 21:29 UTCJul 14, 23:06 UTC1h 37m +13m +22m
2026-07-13 A28DE3 SJC → SEA Jul 13, 21:25 UTCJul 13, 22:55 UTC1h 30m - -
2026-07-12 ABA152 SJC → SEA Jul 12, 21:50 UTCJul 12, 23:15 UTC1h 25m - -
2026-07-11 A1CC1F SJC → SEA Jul 11, 21:41 UTCJul 11, 23:00 UTC1h 19m +25m +13m
2026-07-11 A1CC1F SJC → SEA Jul 11, 21:30 UTCJul 11, 23:05 UTC1h 35m - -
2026-07-10 A21ED4 SJC → SEA Jul 10, 21:20 UTCJul 10, 23:00 UTC1h 40m - -
2026-07-09 A1C868 SJC → SEA Jul 9, 22:25 UTCJul 10, 00:05 UTC1h 40m - -
2026-07-09 A1C868 SJC → SEA Jul 9, 21:56 UTCJul 9, 23:53 UTC1h 57m +40m +6m
2026-07-08 A2B919 SJC → SEA Jul 8, 21:30 UTCJul 8, 23:10 UTC1h 40m - -
2026-07-07 A2F95C SJC → SEA Jul 7, 21:20 UTCJul 7, 22:55 UTC1h 35m - -
2026-07-06 A9D63B SJC → SEA Jul 6, 21:36 UTCJul 6, 22:50 UTC1h 14m +20m +7m
2026-07-06 A9D63B - Jul 6, 21:25 UTCJul 6, 22:45 UTC1h 20m - -
2026-07-05 A9AB05 SJC → SEA Jul 5, 21:35 UTCJul 5, 23:10 UTC1h 35m - -
2026-07-04 A21ED4 SJC → SEA Jul 4, 21:35 UTCJul 4, 23:10 UTC1h 35m - -

Performance history

Flights tracked
129 showing last 30
Avg arrival delay
+7m
On-time arrival
75% 75% on time
Aircraft used
21

Monthly activity 4 months

Month Flights tracked
July 2026 35
June 2026 37
May 2026 35
April 2026 22

ASA521 frequently asked

Where does flight ASA521 fly?
ASA521 (Alaska Airlines) flies from AUS to SEA. View the full route page.
How long is flight ASA521?
Based on observed flights, ASA521 takes on average 1h 33m from takeoff to landing.
How often does ASA521 fly?
ASA521 has been observed flying several times a week in our tracking data. We've recorded 129 flights under this callsign.
Is flight ASA521 usually on time?
Across recent flights, ASA521 arrives with an average 7-minute delay. 75% of flights arrive within 15 minutes of schedule.
What aircraft operates flight ASA521?
ASA521 has been operated by 21 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track ASA521 live?
Yes. When ASA521 is currently airborne, the live tracker map above shows its real-time position from ADS-B broadcasts. If the map is empty, the flight is not currently in the air.