Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

ASA21

Operated by Alaska Airlines

Live map

Live map filtered to ASA21. Shown when the flight is currently airborne.

Route airports View route page →

Departure

JFK KJFK VFR

John F. Kennedy International Airport

New York, US

Local time
13:35 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
13 ft
Coordinates
40.6394, -73.7793

cloud Weather

Wind
250° / 7 kt
Visibility
10 SM
Ceiling
FEW 3,000 ft, SCT 19,000 ft, BKN 25,000 ft
Temp / Dew
28°C / 21°C
Altimeter
30.00 inHg

Obs: 2026-08-28T16:51:00.000Z

Raw METAR / TAF 
METAR KJFK 281651Z 25007KT 10SM FEW030 SCT190 BKN250 28/21 A3000 RMK AO2 SLP158 T02780206 $

TAF KJFK 281439Z 2815/2918 VRB05KT P6SM SCT015 SCT040 BKN070 FM281700 28005KT P6SM SCT020 BKN040 BKN070 FM282000 22007KT P6SM SCT040 BKN070 PROB30 2820/2824 4SM -SHRA BR BKN040 FM290100 33008KT P6SM FEW040 FM290900 01008KT P6SM FEW040

Arrival

SEA KSEA MVFR

Seattle–Tacoma International Airport

Seattle, US

Local time
10:35 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
433 ft
Coordinates
47.4479, -122.3103

cloud Weather

Wind
200° / 5 kt
Visibility
10 SM
Ceiling
BKN 2,200 ft, BKN 3,200 ft
Temp / Dew
16°C / 12°C
Altimeter
30.08 inHg

Obs: 2026-08-28T16:53:00.000Z

Raw METAR / TAF 
METAR KSEA 281653Z 20005KT 10SM BKN022 BKN032 16/12 A3008 RMK AO2 SLP190 T01610122 $

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
2026-07-26 A2D573 JFK → SEA Jul 26, 11:25 UTCJul 26, 17:05 UTC5h 40m - -
2026-07-25 ADD2AD JFK → SEA Jul 25, 11:30 UTCJul 25, 17:10 UTC5h 40m - -
2026-07-25 ADD2AD JFK → SEA Jul 25, 11:29 UTCJul 25, 16:51 UTC5h 22m +29m -10m
2026-07-24 AD8766 JFK → SEA Jul 24, 11:20 UTCJul 24, 17:00 UTC5h 40m - -
2026-07-23 A715C6 JFK → SEA Jul 23, 11:20 UTCJul 23, 17:00 UTC5h 40m - -
2026-07-21 A6C6C8 JFK → SEA Jul 21, 11:35 UTCJul 21, 17:30 UTC5h 55m - -
2026-07-20 A2228B JFK → SEA Jul 20, 11:35 UTCJul 20, 17:20 UTC5h 45m - -
2026-07-19 AB9276 JFK → SEA Jul 19, 18:01 UTCJul 19, 23:06 UTC5h 5m +421m -1m
2026-07-19 AB9276 JFK → SEA Jul 19, 17:40 UTCJul 19, 23:25 UTC5h 45m - -
2026-07-17 A2228B JFK → SEA Jul 17, 11:30 UTCJul 17, 16:49 UTC5h 20m - -
2026-07-16 A78FFA JFK → SEA Jul 16, 11:30 UTCJul 16, 17:00 UTC5h 30m - -
2026-07-15 A30BCE JFK → SEA Jul 15, 11:40 UTCJul 15, 17:05 UTC5h 25m - -
2026-07-14 A622BC JFK → SEA Jul 14, 11:25 UTCJul 14, 16:40 UTC5h 15m - -
2026-07-13 A262AD JFK → SEA Jul 13, 11:35 UTCJul 13, 16:50 UTC5h 15m - -
2026-07-12 A4B7D7 JFK → SEA Jul 12, 11:20 UTCJul 12, 16:40 UTC5h 20m - -
2026-07-12 A4B7D7 JFK → SEA Jul 12, 11:18 UTCJul 12, 16:28 UTC5h 10m +18m +11m
2026-07-11 A4CE21 JFK → SEA Jul 11, 11:25 UTCJul 11, 16:50 UTC5h 25m - -
2026-07-10 A1CC1F - Jul 10, 11:40 UTCJul 10, 16:40 UTC5h 0m - -
2026-07-10 A1CC1F - Jul 10, 11:20 UTCJul 10, 11:35 UTC15m - -
2026-07-09 ACCD10 JFK → SEA Jul 9, 11:45 UTCJul 9, 17:10 UTC5h 25m - -
2026-07-08 A2B919 JFK → SEA Jul 8, 11:30 UTCJul 8, 16:50 UTC5h 20m - -
2026-07-07 A5C4E2 JFK → SEA Jul 7, 11:41 UTCJul 7, 16:28 UTC4h 47m +41m -4m
2026-07-07 A5C4E2 JFK → SEA Jul 7, 11:20 UTCJul 7, 16:40 UTC5h 20m - -
2026-07-06 ADB653 JFK → SEA Jul 6, 13:19 UTCJul 6, 18:13 UTC4h 54m +139m +19m
2026-07-06 ADB653 JFK → SEA Jul 6, 13:20 UTCJul 6, 18:30 UTC5h 10m - -
2026-07-05 AD4AFB JFK → SEA Jul 5, 11:45 UTCJul 5, 17:20 UTC5h 35m - -
2026-07-04 ACFBFD JFK → SEA Jul 4, 11:35 UTCJul 4, 16:55 UTC5h 20m - -
2026-07-03 A9672C JFK → SEA Jul 3, 11:40 UTCJul 3, 17:10 UTC5h 30m - -
2026-07-02 A6CE36 JFK → SEA Jul 2, 11:35 UTCJul 2, 17:05 UTC5h 30m - -
2026-07-01 A602AB JFK → SEA Jul 1, 11:25 UTCJul 1, 16:40 UTC5h 15m - -

Performance history

Flights tracked
146 showing last 30
Avg arrival delay
+3m
On-time arrival
80% 80% on time
Aircraft used
23

Monthly activity 4 months

Month Flights tracked
July 2026 30
June 2026 38
May 2026 42
April 2026 36

ASA21 frequently asked

Where does flight ASA21 fly?
ASA21 (Alaska Airlines) flies from JFK to SEA. View the full route page.
How long is flight ASA21?
Based on observed flights, ASA21 takes on average 5h 13m from takeoff to landing.
How often does ASA21 fly?
ASA21 has been observed flying several times a week in our tracking data. We've recorded 146 flights under this callsign.
Is flight ASA21 usually on time?
Across recent flights, ASA21 arrives with an average 3-minute delay. 80% of flights arrive within 15 minutes of schedule.
What aircraft operates flight ASA21?
ASA21 has been operated by 23 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track ASA21 live?
Yes. When ASA21 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.