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 06, 2022, was operated by another airline. It arrived at gate F12. Passengers were flying aboard a Boeing 737-900 with tail number N37420. 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 05, 2022, was operated by another airline. It departed from gate F16. Passengers were flying aboard an Airbus A320-200 with tail number N410UA. 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 05, 2022, was operated by another airline. It arrived at gate E3. 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 04, 2022, was operated by another airline. It departed from gate E7. Passengers were flying aboard an Airbus A319 with tail number N804UA. 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 04, 2022, was operated by another airline. It arrived at gate F14. Passengers were flying aboard a Boeing 737-900 with tail number N53441. 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 02, 2022, was operated by another airline. It departed from gate E8. Passengers were flying aboard an Airbus A319 with tail number N830UA. 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 02, 2022, was operated by another airline. It arrived at gate E11. Passengers were flying aboard a Boeing 737-900 with tail number N36469. 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 01, 2022, was operated by another airline. It departed from gate F1. Passengers were flying aboard an Airbus A319 with tail number N846UA. 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 01, 2022, was operated by another airline. It arrived at gate E10. Passengers were flying aboard a Boeing 737-900 with tail number N75429. See all the flights for UA2121.
UA2121 (SFO-DEN)
This United Airlines flight traveled from San Francisco International Airport to Denver International Airport, on May 05, 2022. It departed from gate E5. Passengers were flying aboard a Boeing 737-800 with tail number N76516. See all the flights for UA2121.
UA2121 (SFO-DEN)
This United Airlines flight traveled from San Francisco International Airport to Denver International Airport, on May 04, 2022. It departed from gate E5. Passengers were flying aboard a Boeing 737-800 with tail number N76502. See all the flights for UA2121.
UA2121 (SFO-DEN)
This United Airlines flight traveled from San Francisco International Airport to Denver International Airport, on May 03, 2022. It departed from gate F2. Passengers were flying aboard a Boeing 737-800 with tail number N14240. See all the flights for UA2121.