Flights for the airplane with tail number N421UA 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.

UA1763 (MCI-SFO)
This United Airlines flight between Kansas City International Airport and San Francisco International Airport, on February 24, 2023, was operated by another airline. It arrived at gate F1. Passengers were flying aboard an Airbus A320-200 with tail number N421UA. See all the flights for UA1763.
UA2117 (SFO-MCI)
This United Airlines flight between San Francisco International Airport and Kansas City International Airport, on February 23, 2023, was operated by another airline. It departed from gate E8. Passengers were flying aboard an Airbus A320-200 with tail number N421UA. See all the flights for UA2117.
UA298 (AUS-SFO)
This United Airlines flight between Austin-Bergstrom International Airport and San Francisco International Airport, on February 23, 2023, was operated by another airline. It arrived at gate E8. Passengers were flying aboard an Airbus A320-200 with tail number N421UA. See all the flights for UA298.
UA1780 (SFO-AUS)
This United Airlines flight between San Francisco International Airport and Austin-Bergstrom International Airport, on February 23, 2023, was operated by another airline. It departed from gate E12. Passengers were flying aboard an Airbus A320-200 with tail number N421UA. See all the flights for UA1780.
UA1272 (MEX-SFO)
This United Airlines flight between Benito Juarez International Airport and San Francisco International Airport, on February 22, 2023, was operated by another airline. It arrived at gate G11. Passengers were flying aboard an Airbus A320-200 with tail number N421UA. See all the flights for UA1272.
UA1271 (SFO-MEX)
This United Airlines flight between San Francisco International Airport and Benito Juarez International Airport, on February 22, 2023, was operated by another airline. It departed from gate F1. Passengers were flying aboard an Airbus A320-200 with tail number N421UA. See all the flights for UA1271.
UA2027 (MSY-SFO)
This United Airlines flight traveled from New Orleans International Airport to San Francisco International Airport, on February 22, 2023. It arrived at gate F1. Passengers were flying aboard an Airbus A320-200 with tail number N421UA. See all the flights for UA2027.
UA544 (SFO-MSY)
This United Airlines flight traveled from San Francisco International Airport to New Orleans International Airport, on February 21, 2023. It departed from gate F21. Passengers were flying aboard an Airbus A320-200 with tail number N421UA. See all the flights for UA544.
UA2227 (BZN-SFO)
This United Airlines flight between Gallatin Field Airport and San Francisco International Airport, on February 21, 2023, was operated by another airline. It arrived at gate F21. Passengers were flying aboard an Airbus A320-200 with tail number N421UA. See all the flights for UA2227.
UA1574 (SFO-BZN)
This United Airlines flight traveled from San Francisco International Airport to Gallatin Field Airport, on February 21, 2023. It departed from gate F4. Passengers were flying aboard an Airbus A320-200 with tail number N421UA. See all the flights for UA1574.
UA1763 (MCI-SFO)
This United Airlines flight between Kansas City International Airport and San Francisco International Airport, on February 21, 2023, was operated by another airline. It arrived at gate F4. Passengers were flying aboard an Airbus A320-200 with tail number N421UA. See all the flights for UA1763.
UA2117 (SFO-MCI)
This United Airlines flight between San Francisco International Airport and Kansas City International Airport, on February 20, 2023, was operated by another airline. It departed from gate G12. Passengers were flying aboard an Airbus A320-200 with tail number N421UA. See all the flights for UA2117.