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 August 18, 2022, was operated by another airline. It arrived at gate E11. 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 August 17, 2022, was operated by another airline. It departed from gate F20. 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 17, 2022, was operated by another airline. It arrived at gate F13. Passengers were flying aboard a Boeing 737-900 with tail number N75436. 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 16, 2022, was operated by another airline. It departed from gate E6. Passengers were flying aboard an Airbus A319 with tail number N873UA. 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 16, 2022, was operated by another airline. It arrived at gate E7. Passengers were flying aboard a Boeing 737-900 with tail number N38446. 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 15, 2022, was operated by another airline. It departed from gate E6. Passengers were flying aboard an Airbus A319 with tail number N875UA. 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 15, 2022, was operated by another airline. It arrived at gate F21. Passengers were flying aboard a Boeing 737-900 with tail number N81449. 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 14, 2022, was operated by another airline. It departed from gate E9. 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 14, 2022, was operated by another airline. It arrived at gate E12. Passengers were flying aboard a Boeing 737-900 with tail number N36447. 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 13, 2022, was operated by another airline. It departed from gate E6. Passengers were flying aboard an Airbus A320-200 with tail number N412UA. 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 13, 2022, was operated by another airline. It arrived at gate E8. 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 12, 2022, was operated by another airline. It departed from gate F20. See all the flights for UA2121.