United Airlines UA2121 Flight Status : Live Tracking & Updates

Domestic flight United Airlines UA2121 takes off from Seattle (SEA) United States to San Francisco (SFO) United States. It's operated by United Airlines. The plane leaves Seattle International Airport at 18:00 05 May 2026 America/Los_Angeles. The flight is expected to land at San Francisco International Airport at 22:42 05 May 2026 America/Los_Angeles. The flight will last about 2 hours 42 minutes.

Current status of UA2121 is Departed On time Estimated Arrival in 5 hours, 4 minutes

UA2121 - UAL2121 United Airlines (UA)
SEA Seattle United States
Flight SEA to SFO
SFO San Francisco United States
Departed On time Estimated Arrival in 5 hours, 4 minutes
Departure Seattle International Airport
IATA: SEAICAO: KSEA
Scheduled 18:00 05 May 2026
Actual 18:02 05 May 2026
None A40
Arrival San Francisco International Airport
IATA: SFOICAO: KSFO
Scheduled 22:42 05 May 2026
Estimated 22:25 05 May 2026
None A3
UA2121 Detail
  • Type: Domestic Flight
  • Flight Duration: 2 hours 42 minutes
  • Flight Distance: 1092 kms / 678 miles
Airline
  • United Airlines
  • IATA: UA
  • ICAO: UAL
  • Operating Days: Wednesday
Passenger Services
  • Service type: Normal passenger
  • Seats: 154
  • Freight capacity: 17.8 tons
  • Passenger classes: First Class, Economy, Business Class, Shuttle
More Detail
  • Aircraft: Boeing 737-900 Passenger (Scimitar Winglets)
  • Callsign: F-KDFW4
  • Departure Timezone: America/Los_Angeles
  • Arrival Timezone: America/Los_Angeles
  • Current Time in Seattle: Tuesday 2026-05-05 17:21 PM
  • Current Time in San Francisco: Tuesday 2026-05-05 17:21 PM

Flight routes similar to United Airlines UA2121

Airline Flight no Departure Arrival
Delta DL2635
Delta 		05/05/2026
21:20 		2 hours 17 minutes
23:37
United Airlines UA737
United Airlines 		05/05/2026
19:36 		2 hours 13 minutes
21:49
Virgin Australia VA8298
Virgin Australia 		05/05/2026
19:36 		2 hours 13 minutes
21:49
Condor DE5000
Condor 		05/05/2026
19:04 		2 hours 19 minutes
21:23
Alaska Airlines AS528
Alaska Airlines 		05/05/2026
20:05 		2 hours 23 minutes
22:28
British Airways BA2950
British Airways 		05/05/2026
20:05 		2 hours 23 minutes
22:28
Delta DL3991
Delta 		05/05/2026
17:00 		2 hours 20 minutes
19:20
SAS SK3469
SAS 		05/05/2026
07:00 		2 hours 27 minutes
09:22

United Airlines Flight UA2121 FAQs

What is the scheduled flight duration for United Airlines UA2121 flight?

On average, nonstop flight takes 2 hour(s) 42 minutes, with the flight distance of 1092 km (678 miles).

What is the current status of United Airlines UA2121 flight?

The current status of flight United Airlines UA2121 is Departed On time.

What type of aircraft is used for the United Airlines UA2121 flight?

All United Airlines UA2121 flights are operated using Boeing 737-900 Passenger (Scimitar Winglets) aircraft.

How many United Airlines UA2121 flights are operated a week?

1 flights per week. The Flight United Airlines UA2121 is operated on Wednesday.