Flights for UA2121 These are not all the flights that UA2121 has taken, just some of them that have flown in or out of SFO

UA2121 (ORD-SFO)
This United Airlines flight between Chicago O'Hare International Airport and San Francisco International Airport, on September 04, 2022, was operated by another airline. It arrived at gate E9. Passengers were flying aboard a Boeing 737-900 with tail number N37471. See all the flights for UA2121.
UA2121 (SFO-RNO)
This United Airlines flight between San Francisco International Airport and Reno-Tahoe International Airport, on September 01, 2022, was operated by another airline. It departed from gate E3. Passengers were flying aboard an Airbus A319 with tail number N828UA. See all the flights for UA2121.
UA2121 (ORD-SFO)
This United Airlines flight between Chicago O'Hare International Airport and San Francisco International Airport, on September 01, 2022, was operated by another airline. It arrived at gate E12. Passengers were flying aboard a Boeing 737-900 with tail number N68807. See all the flights for UA2121.
UA2121 (SFO-RNO)
This United Airlines flight between San Francisco International Airport and Reno-Tahoe International Airport, on August 31, 2022, was operated by another airline. It departed from gate E9. Passengers were flying aboard an Airbus A320-200 with tail number N484UA. See all the flights for UA2121.
UA2121 (ORD-SFO)
This United Airlines flight between Chicago O'Hare International Airport and San Francisco International Airport, on August 31, 2022, was operated by another airline. It arrived at gate F21. Passengers were flying aboard a Boeing 737-900 with tail number N69885. See all the flights for UA2121.
UA2121 (SFO-RNO)
This United Airlines flight between San Francisco International Airport and Reno-Tahoe International Airport, on August 28, 2022, was operated by another airline. It departed from gate F4. Passengers were flying aboard an Airbus A319 with tail number N820UA. See all the flights for UA2121.
UA2121 (ORD-SFO)
This United Airlines flight between Chicago O'Hare International Airport and San Francisco International Airport, on August 28, 2022, was operated by another airline. It arrived at gate F20. Passengers were flying aboard a Boeing 737-900 with tail number N61887. See all the flights for UA2121.
UA2121 (SFO-RNO)
This United Airlines flight between San Francisco International Airport and Reno-Tahoe International Airport, on August 27, 2022, was operated by another airline. It departed from gate F3A. Passengers were flying aboard an Airbus A320-200 with tail number N403UA. See all the flights for UA2121.
UA2121 (ORD-SFO)
This United Airlines flight between Chicago O'Hare International Airport and San Francisco International Airport, on August 27, 2022, was operated by another airline. It arrived at gate E10. Passengers were flying aboard a Boeing 737-900 with tail number N69839. See all the flights for UA2121.
UA2121 (SFO-RNO)
This United Airlines flight between San Francisco International Airport and Reno-Tahoe International Airport, on August 26, 2022, was operated by another airline. It departed from gate E12. Passengers were flying aboard an Airbus A319 with tail number N834UA. See all the flights for UA2121.
UA2121 (ORD-SFO)
This United Airlines flight between Chicago O'Hare International Airport and San Francisco International Airport, on August 26, 2022, was operated by another airline. It arrived at gate E6. Passengers were flying aboard a Boeing 737-900 with tail number N39418. See all the flights for UA2121.
UA2121 (SFO-RNO)
This United Airlines flight between San Francisco International Airport and Reno-Tahoe International Airport, on August 24, 2022, was operated by another airline. It departed from gate F2. Passengers were flying aboard an Airbus A319 with tail number N854UA. See all the flights for UA2121.