Apparatus

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flight_takeoff Flight

ASA421

Operated by Alaska Airlines

Live map

Live map filtered to ASA421. Shown when the flight is currently airborne.

Route airports View route page →

Departure

PDX KPDX VFR

Portland International Airport

Portland, US

Local time
09:14 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
31 ft
Coordinates
45.5887, -122.5980

cloud Weather

Wind
VRB / 4 kt
Visibility
10 SM
Ceiling
FEW 1,300 ft, FEW 2,500 ft, SCT 25,000 ft
Temp / Dew
17°C / 13°C
Altimeter
30.08 inHg

Obs: 2026-08-28T15:53:00.000Z

Raw METAR / TAF 
METAR KPDX 281553Z VRB04KT 10SM FEW013 FEW025 SCT250 17/13 A3008 RMK AO2 SLP186 T01670128 $

TAF KPDX 281459Z 2815/2912 30004KT P6SM SCT015 SCT250 FM282200 31009KT P6SM SCT250 FM290900 VRB04KT P6SM SCT050

flight Live Traffic

flight_takeoff 85 Departures
flight_land 75 Arrivals

Arrival

SFO KSFO VFR

San Francisco International Airport

San Francisco, US

Local time
09:14 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
290° / 11 kt
Visibility
10 SM
Ceiling
FEW 400 ft, BKN 12,000 ft, OVC 20,000 ft
Temp / Dew
16°C / 13°C
Altimeter
30.00 inHg

Obs: 2026-08-28T15:56:00.000Z

Raw METAR / TAF 
METAR KSFO 281556Z 29011KT 10SM FEW004 BKN120 OVC200 16/13 A3000 RMK AO2 RAE05 SLP160 P0000 T01610133

TAF KSFO 281447Z 2815/2918 28009KT P6SM VCSH OVC150 FM282000 28016KT P6SM OVC100 FM291000 27011KT P6SM SCT010

flight Live Traffic

flight_takeoff 127 Departures
flight_land 225 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-26 ADB653 PDX → SFO Jul 26, 18:33 UTCJul 26, 22:13 UTC3h 40m +28m +17m
2026-07-26 ADB653 PDX → SFO Jul 26, 18:20 UTCJul 26, 20:45 UTC2h 25m - -
2026-07-25 A56866 PDX → SFO Jul 25, 18:48 UTCJul 25, 22:30 UTC3h 42m +43m -16m
2026-07-25 A56866 PDX → SFO Jul 25, 18:35 UTCJul 25, 21:40 UTC3h 5m - -
2026-07-24 A2B562 PDX → SFO Jul 24, 19:00 UTCJul 25, 02:50 UTC7h 50m - -
2026-07-23 A2F95C PDX → SFO Jul 23, 19:01 UTCJul 23, 23:06 UTC4h 5m +66m +13m
2026-07-23 A2F95C PDX → SFO Jul 23, 19:05 UTCJul 23, 21:00 UTC1h 55m - -
2026-07-22 A6EE47 PDX → SFO Jul 22, 19:05 UTCJul 22, 22:50 UTC3h 45m +70m +1m
2026-07-22 A6EE47 PDX → SFO Jul 22, 19:00 UTCJul 22, 22:10 UTC3h 10m - -
2026-07-21 A30460 PDX → SFO Jul 21, 18:15 UTCJul 21, 20:50 UTC2h 35m - -
2026-07-21 A30460 PDX → SFO Jul 21, 18:11 UTCJul 21, 22:02 UTC3h 51m +16m -9m
2026-07-20 A2D1BC PDX → SFO Jul 20, 18:10 UTCJul 20, 21:15 UTC3h 5m - -
2026-07-20 A2D1BC PDX → SFO Jul 20, 18:07 UTCJul 20, 21:56 UTC3h 49m +12m -4m
2026-07-19 A5EC61 SEA → SFO Jul 19, 18:40 UTCJul 20, 02:20 UTC7h 40m - -
2026-07-18 ACDBEC SEA → SFO Jul 18, 18:30 UTCJul 19, 02:20 UTC7h 50m - -
2026-07-17 A1EFE7 SEA → SFO Jul 17, 19:15 UTCJul 18, 03:10 UTC7h 56m - -
2026-07-16 A70333 SEA → SFO Jul 16, 20:35 UTCJul 17, 04:10 UTC7h 35m - -
2026-07-15 A682EF SEA → SFO Jul 15, 18:20 UTCJul 16, 02:15 UTC7h 55m - -
2026-07-14 A69F49 - Jul 14, 18:20 UTCJul 14, 21:35 UTC3h 15m - -
2026-07-14 A69F49 SEA → SJD Jul 14, 18:18 UTCJul 14, 22:23 UTC4h 5m +23m +8m
2026-07-13 A73220 - Jul 13, 18:25 UTCJul 13, 21:10 UTC2h 45m - -
2026-07-13 A73220 SEA → SJD Jul 13, 18:21 UTCJul 13, 22:33 UTC4h 12m +26m +11m
2026-07-12 AD036B SEA → SFO Jul 12, 18:30 UTCJul 13, 02:20 UTC7h 50m - -
2026-07-11 A28A2C SEA → SFO Jul 11, 18:10 UTCJul 12, 02:05 UTC7h 55m - -
2026-07-10 A535C2 SEA → SFO Jul 10, 18:15 UTCJul 11, 02:00 UTC7h 45m - -
2026-07-09 A744B3 SEA → SFO Jul 9, 18:25 UTCJul 10, 02:15 UTC7h 50m - -
2026-07-08 ADBA0A SEA → SJD Jul 8, 18:27 UTCJul 8, 22:02 UTC3h 35m +28m -5m
2026-07-08 ADBA0A - Jul 8, 18:15 UTCJul 8, 21:20 UTC3h 5m - -
2026-07-07 A61797 - Jul 7, 19:15 UTCJul 7, 22:20 UTC3h 5m - -
2026-07-07 A61797 SEA → SJD Jul 7, 19:11 UTCJul 7, 23:06 UTC3h 55m +72m -4m

Performance history

Flights tracked
142 showing last 30
Avg arrival delay
+1m
On-time arrival
90% 90% on time
Aircraft used
20

Monthly activity 4 months

Month Flights tracked
July 2026 39
June 2026 38
May 2026 37
April 2026 28

ASA421 frequently asked

Where does flight ASA421 fly?
ASA421 (Alaska Airlines) flies from PDX to SFO. View the full route page.
How long is flight ASA421?
Based on observed flights, ASA421 takes on average 4h 50m from takeoff to landing.
How often does ASA421 fly?
ASA421 has been observed flying several times a week in our tracking data. We've recorded 142 flights under this callsign.
Is flight ASA421 usually on time?
Across recent flights, ASA421 arrives with an average 1-minute delay. 90% of flights arrive within 15 minutes of schedule.
What aircraft operates flight ASA421?
ASA421 has been operated by 20 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track ASA421 live?
Yes. When ASA421 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.