Flights for the airplane with tail number N39423 These are not all the flights for this airplane, just the ones that have flown in and out of SFO since we've been counting. See all the airports this plane has visited for those flights or all the airplanes we've logged so far

UA2247 (SFO-IAD)
This United Airlines flight between San Francisco International Airport and Dulles International Airport, on March 20, 2023, was operated by another airline. It departed from gate F21. Passengers were flying aboard a Boeing 737-900 with tail number N39423. See all the flights for UA2247.
UA708 (DEN-SFO)
This United Airlines flight between Denver International Airport and San Francisco International Airport, on March 20, 2023, was operated by another airline. It arrived at gate F21. Passengers were flying aboard a Boeing 737-900 with tail number N39423. See all the flights for UA708.
UA1728 (LAS-SFO)
This United Airlines flight between McCarran International Airport and San Francisco International Airport, on March 16, 2023, was operated by another airline. It arrived at gate E6. Passengers were flying aboard a Boeing 737-900 with tail number N39423. See all the flights for UA1728.
UA1823 (SFO-DEN)
This United Airlines flight between San Francisco International Airport and Denver International Airport, on March 09, 2023, was operated by another airline. It departed from gate E5. Passengers were flying aboard a Boeing 737-900 with tail number N39423. See all the flights for UA1823.
UA565 (SFO-SAN)
This United Airlines flight between San Francisco International Airport and San Diego International Airport, on March 09, 2023, was operated by another airline. It departed from gate F3. Passengers were flying aboard a Boeing 737-900 with tail number N39423. See all the flights for UA565.
UA1159 (CUN-SFO)
This United Airlines flight traveled from Cancun Airport to San Francisco International Airport, on March 08, 2023. It arrived at gate G11. Passengers were flying aboard a Boeing 737-900 with tail number N39423. See all the flights for UA1159.
UA1679 (SFO-CUN)
This United Airlines flight traveled from San Francisco International Airport to Cancun Airport, on February 24, 2023. It departed from gate F14. Passengers were flying aboard a Boeing 737-900 with tail number N39423. See all the flights for UA1679.
UA214 (SFO-MFR)
This United Airlines flight between San Francisco International Airport and Rogue Valley International-Medford Airport, on February 23, 2023, was operated by another airline. It departed from gate E5. Passengers were flying aboard a Boeing 737-900 with tail number N39423. See all the flights for UA214.
UA2385 (IAH-SFO)
This United Airlines flight between George Bush Intercontinental Airport and San Francisco International Airport, on February 23, 2023, was operated by another airline. It arrived at gate E5. Passengers were flying aboard a Boeing 737-900 with tail number N39423. See all the flights for UA2385.
UA1139 (MFR-SFO)
This United Airlines flight between Rogue Valley International-Medford Airport and San Francisco International Airport, on February 23, 2023, was operated by another airline. It arrived at gate D10. Passengers were flying aboard a Boeing 737-900 with tail number N39423. See all the flights for UA1139.
UA436 (SFO-BWI)
This United Airlines flight between San Francisco International Airport and Baltimore-Washington International Thurgood Marshall Airport, on February 19, 2023, was operated by another airline. It departed from gate E4. Passengers were flying aboard a Boeing 737-900 with tail number N39423. See all the flights for UA436.
UA1769 (RDU-SFO)
This United Airlines flight between Durham International Airport and San Francisco International Airport, on February 19, 2023, was operated by another airline. It arrived at gate E4. Passengers were flying aboard a Boeing 737-900 with tail number N39423. See all the flights for UA1769.