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 12, 2022, was operated by another airline. It arrived at gate E12. Passengers were flying aboard a Boeing 737-900 with tail number N64844. 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 11, 2022, was operated by another airline. It departed from gate E4. Passengers were flying aboard an Airbus A319. 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 11, 2022, was operated by another airline. It arrived at gate F2. 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 10, 2022, was operated by another airline. It departed from gate F4. 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 10, 2022, was operated by another airline. It arrived at gate E13. Passengers were flying aboard a Boeing 737-900 with tail number N69806. 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 09, 2022, was operated by another airline. It departed from gate E6. Passengers were flying aboard an Airbus A320-200 with tail number N434UA. 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 09, 2022, was operated by another airline. It arrived at gate F12. Passengers were flying aboard a Boeing 737-900 with tail number N63820. 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 08, 2022, was operated by another airline. It departed from gate E11. Passengers were flying aboard an Airbus A319 with tail number N878UA. 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 08, 2022, was operated by another airline. It arrived at gate E13. 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 07, 2022, was operated by another airline. It departed from gate F21. Passengers were flying aboard an Airbus A320-200. 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 07, 2022, was operated by another airline. It arrived at gate F17. Passengers were flying aboard a Boeing 737-900 with tail number N68823. 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 06, 2022, was operated by another airline. It departed from gate G11. Passengers were flying aboard an Airbus A320-200 with tail number N445UA. See all the flights for UA2121.