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 MVFR

Austin Bergstrom International Airport

Austin, US

Local time
02:48 CDT
Timezone
America/Chicago
Type
Large Airport
Elevation
542 ft
Coordinates
30.1975, -97.6620

cloud Weather

Wind
180° / 7 kt
Visibility
10 SM
Ceiling
BKN 1,500 ft, BKN 11,000 ft
Temp / Dew
26°C / 24°C
Altimeter
29.95 inHg

Obs: 2026-10-13T06:53:00.000Z

Raw METAR / TAF 
METAR KAUS 130653Z 18007KT 10SM BKN015 BKN110 26/24 A2995 RMK AO2 SLP130 T02560239 $

TAF KAUS 130702Z 1307/1412 17007KT P6SM OVC012 FM131530 18011KT P6SM BKN022 FM131700 17013G23KT P6SM SCT050 FM140400 16011KT P6SM SCT022 FM140700 17007KT P6SM OVC012

flight Live Traffic

flight_takeoff 31 Departures
flight_land 50 Arrivals

Arrival

SEA KSEA VFR

Seattle–Tacoma International Airport

Seattle, US

Local time
00:48 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
433 ft
Coordinates
47.4479, -122.3103

cloud Weather

Wind
120° / 7 kt
Visibility
10 SM
Ceiling
BKN 8,500 ft
Temp / Dew
9°C / 4°C
Altimeter
30.11 inHg

Obs: 2026-10-13T06:53:00.000Z

Raw METAR / TAF 
METAR KSEA 130653Z 12007KT 10SM BKN085 09/04 A3011 RMK AO2 SLP202 T00940044

TAF KSEA 130520Z 1306/1412 VRB03KT P6SM SCT250 FM130800 16004KT P6SM OVC100 FM131800 20005KT P6SM OVC070 FM132300 23005KT P6SM OVC070 FM140400 19004KT P6SM SCT025 OVC040 FM140900 18004KT P6SM OVC025

flight Live Traffic

flight_takeoff 266 Departures
flight_land 320 Arrivals

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.