Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

SWA8521

Operated by Southwest Airlines

Live map

Live map filtered to SWA8521. Shown when the flight is currently airborne.

Route airports View route page →

Departure

SMF KSMF VFR

Sacramento International Airport

Sacramento, US

Local time
00:27 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
27 ft
Coordinates
38.6954, -121.5910

cloud Weather

Wind
170° / 7 kt
Visibility
10 SM
Ceiling
OVC 6,000 ft
Temp / Dew
13°C / 12°C
Altimeter
29.90 inHg
Wx
RA

Obs: 2026-04-21T06:53:00.000Z

Raw METAR / TAF 
METAR KSMF 210653Z 17007KT 10SM RA OVC060 13/12 A2990 RMK AO2 SLP124 P0015 T01280117

TAF KSMF 210520Z 2106/2206 VRB05KT P6SM -RA OVC060 FM210900 VRB05KT 6SM -RA OVC030 FM211800 15008KT 6SM -TSRA BKN030CB

flight Live Traffic

flight_takeoff 94 Departures
flight_land 90 Arrivals

Arrival

SJC KSJC IFR

Norman Y. Mineta San Jose International Airport

San Jose, US

Local time
00:27 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
62 ft
Coordinates
37.3625, -121.9292

cloud Weather

Wind
40° / 4 kt
Visibility
7 SM
Ceiling
OVC 600 ft
Temp / Dew
13°C / 12°C
Altimeter
29.90 inHg
Wx
-RA

Obs: 2026-04-21T07:06:00.000Z

Raw METAR / TAF 
SPECI KSJC 210706Z AUTO 04004KT 7SM -RA OVC006 13/12 A2990 RMK AO2 CIG 004V008 P0002 T01280122

TAF KSJC 210520Z 2106/2206 18006KT 6SM -RA BKN030 OVC050 FM211400 15007KT P6SM VCSH SCT050 FM211800 19010G20KT 3SM SHRA BKN025 OVC050 FM212100 29008KT 4SM -SHRA OVC050 FM220000 28008KT P6SM VCSH BKN050

flight Live Traffic

flight_takeoff 113 Departures
flight_land 95 Arrivals

Recent history last 2

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-04-18 AC3731 SMF → SJC Apr 18, 03:30 UTCApr 18, 04:45 UTC1h 15m - -
2026-04-18 AC3731 SMF → SJC Apr 18, 02:05 UTCApr 18, 04:40 UTC2h 35m +40m +14m

Performance history

Flights tracked
2
Avg arrival delay
+14m
On-time arrival
100% 100% on time
Aircraft used
1

Monthly activity 1 month

Month Flights tracked
April 2026 2

SWA8521 frequently asked

Where does flight SWA8521 fly?
SWA8521 (Southwest Airlines) flies from SMF to SJC. View the full route page.
How long is flight SWA8521?
Based on observed flights, SWA8521 takes on average 1h 55m from takeoff to landing.
How often does SWA8521 fly?
SWA8521 has been observed flying rarely in our tracking data. We've recorded 2 flights under this callsign.
Is flight SWA8521 usually on time?
Across recent flights, SWA8521 arrives with an average 14-minute delay. 100% of flights arrive within 15 minutes of schedule.
Can I track SWA8521 live?
Yes. When SWA8521 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.