F9 4082 Schedule
Frontier operates SJC to LAX Mon Thu Fri Sat Sun. Scheduled block time is 1h 26m. Typically a Airbus A321.
Airbus A321 (321)
Scheduled equipment: Airbus A321. Airbus-built. Registration, build year, and photo fill in the moment the aircraft broadcasts.
F9 4082 Flight Path
Cruise altitude, ground speed, and vertical rate from ADS-B broadcasts. The altitude profile fills in while F9 4082 is airborne, capturing climbs, step-climbs, and descents in real time.
Flight path chart appears once F9 4082 is airborne and broadcasting.
Frequently Asked Questions
If a plane icon is moving on the map, yes. That's ADS-B, the aircraft's own GPS position broadcast, updated every few seconds. No icon means the flight isn't airborne at the moment: either before pushback, already landed, or a day it doesn't operate.
Scheduled equipment is the 321. The live tracker shows the actual tail and registration when F9 4082 is airborne. Carriers swap aircraft often enough that you'll sometimes see a different airframe than the scheduled type.
Mon Thu Fri Sat Sun. 5 days a week. On days outside that pattern this page will show the schedule but no live aircraft.
Scheduled 1h 26m gate to gate from SJC to LAX. Actual air time varies with winds and ATC routing. Tailwinds can shave 15 to 20 minutes on long segments.
GPS-accurate via ADS-B. Typically within 30 meters horizontally, updated every 5 to 10 seconds. If the broadcast drops over oceans or mountainous terrain, the map holds the last-known position and the label changes to reflect the signal gap.
A projection from current position, groundspeed, and remaining distance. It doesn't account for descent procedures, holding, or ATC vectoring near the destination. Trust it within plus or minus 10 minutes once the flight is past the halfway mark.