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
04:20 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
13 ft
Coordinates
40.6394, -73.7793

cloud Weather

Wind
340° / 21G29 kt
Visibility
10 SM
Ceiling
BKN 8,000 ft, BKN 11,000 ft
Temp / Dew
18°C / 3°C
Altimeter
29.70 inHg

Obs: 2026-05-30T07:51:00.000Z

Raw METAR / TAF 
METAR KJFK 300751Z 34021G29KT 10SM BKN080 BKN110 18/03 A2970 RMK AO2 PK WND 35029/0749 WSHFT 0653 SLP058 T01780033 $

TAF KJFK 300538Z 3006/3112 27015G23KT P6SM BKN070 BKN100 FM300700 32019G25KT P6SM SCT070 BKN100 FM301100 33027G35KT P6SM BKN040 BKN100 FM302100 36017G26KT P6SM SCT040 BKN100 FM310100 02011KT P6SM SKC FM310600 33005KT P6SM SKC

flight Live Traffic

flight_takeoff 123 Departures
flight_land 147 Arrivals

Arrival

SEA KSEA VFR

Seattle–Tacoma International Airport

Seattle, US

Local time
01:20 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
433 ft
Coordinates
47.4479, -122.3103

cloud Weather

Wind
80° / 3 kt
Visibility
10 SM
Ceiling
BKN 3,700 ft, OVC 5,000 ft
Temp / Dew
9°C / 7°C
Altimeter
30.18 inHg

Obs: 2026-05-30T07:53:00.000Z

Raw METAR / TAF 
METAR KSEA 300753Z 08003KT 10SM BKN037 OVC050 09/07 A3018 RMK AO2 RAE27 SLP228 P0008 T00940067 401560089 $

TAF KSEA 300520Z 3006/3112 01009KT P6SM OVC035 TEMPO 3006/3009 -SHRA FM301200 14005KT P6SM BKN030 FM301900 28006KT P6SM BKN070 FM302200 31008KT P6SM SCT070 BKN250

flight Live Traffic

flight_takeoff 216 Departures
flight_land 196 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-05-29 A29908 JFK → SEA May 29, 20:50 UTCMay 30, 02:10 UTC5h 20m - -
2026-05-28 A5939C JFK → SEA May 28, 20:40 UTCMay 29, 02:00 UTC5h 20m - -
2026-05-28 A5E29A JFK → SEA May 28, 02:00 UTCMay 28, 02:10 UTC10m - -
2026-05-27 A5E29A JFK → SEA May 27, 20:40 UTCMay 28, 02:10 UTC5h 30m - -
2026-05-27 A5E29A JFK → SEA May 27, 20:37 UTCMay 28, 01:43 UTC5h 6m +22m +22m
2026-05-26 A9D63B JFK → SEA May 26, 20:29 UTCMay 27, 00:44 UTC4h 15m - -
2026-05-25 A5DB2C JFK → SEA May 25, 20:40 UTCMay 26, 02:10 UTC5h 30m - -
2026-05-25 A5DB2C JFK → SEA May 25, 20:39 UTCMay 26, 01:55 UTC5h 16m +24m +2m
2026-05-24 A5E29A JFK → SEA May 24, 21:00 UTCMay 25, 02:25 UTC5h 25m - -
2026-05-23 A61797 JFK → SEA May 23, 21:00 UTCMay 24, 02:25 UTC5h 25m - -
2026-05-22 A1EFE7 JFK → SEA May 22, 20:45 UTCMay 23, 02:15 UTC5h 30m - -
2026-05-21 A2B562 JFK → SEA May 21, 21:25 UTCMay 22, 03:00 UTC5h 35m - -
2026-05-21 A9B62A JFK → SEA May 21, 03:15 UTCMay 21, 08:45 UTC5h 30m - -
2026-05-19 ACF0D8 JFK → SEA May 19, 20:45 UTCMay 20, 02:15 UTC5h 30m - -
2026-05-18 A9B273 JFK → SEA May 18, 20:30 UTCMay 19, 01:55 UTC5h 25m - -
2026-05-17 A21ED4 JFK → SEA May 17, 21:01 UTCMay 18, 02:20 UTC5h 20m - -
2026-05-16 A793B1 JFK → SEA May 16, 21:35 UTCMay 17, 03:10 UTC5h 35m - -
2026-05-15 A30BCE JFK → SEA May 15, 20:50 UTCMay 16, 02:40 UTC5h 50m - -
2026-05-14 AD639E JFK → SEA May 14, 20:40 UTCMay 15, 02:25 UTC5h 45m - -
2026-05-13 A5B764 JFK → SEA May 13, 21:25 UTCMay 14, 02:55 UTC5h 30m - -
2026-05-12 ADA51E JFK → SEA May 12, 11:30 UTCMay 12, 17:20 UTC5h 50m - -
2026-05-11 A2F584 JFK → SEA May 11, 11:25 UTCMay 11, 17:25 UTC6h 1m - -
2026-05-11 A2F584 JFK → SEA May 11, 11:24 UTCMay 11, 17:20 UTC5h 56m +24m +14m
2026-05-10 A526E6 JFK → SEA May 10, 11:55 UTCMay 10, 17:40 UTC5h 45m - -
2026-05-10 A526E6 JFK → SEA May 10, 11:56 UTCMay 10, 17:28 UTC5h 32m +56m +36m
2026-05-09 A682EF JFK → SEA May 9, 11:20 UTCMay 9, 17:00 UTC5h 40m - -
2026-05-08 AD4744 JFK → SEA May 8, 11:30 UTCMay 8, 17:15 UTC5h 45m - -
2026-05-07 A1CC1F JFK → SEA May 7, 11:20 UTCMay 7, 17:15 UTC5h 55m - -
2026-05-06 ACA948 JFK → SEA May 6, 11:41 UTCMay 6, 16:33 UTC4h 52m +41m -15m
2026-05-06 ACA948 JFK → SEA May 6, 11:20 UTCMay 6, 16:50 UTC5h 30m - -

Performance history

Flights tracked
76 showing last 30
Avg arrival delay
+12m
On-time arrival
60% 60% on time
Aircraft used
23

Monthly activity 2 months

Month Flights tracked
May 2026 40
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 19m 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 76 flights under this callsign.
Is flight ASA21 usually on time?
Across recent flights, ASA21 arrives with an average 12-minute delay. 60% 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.