Flights for the airplane with tail number N78501 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

UA521 (SFO-PHX)
This United Airlines flight between San Francisco International Airport and Sky Harbor International Airport, on August 22, 2022, was operated by another airline. It departed from gate E12. Passengers were flying aboard a Boeing 737-800 with tail number N78501. See all the flights for UA521.
UA2173 (LAX-SFO)
This United Airlines flight between Los Angeles International Airport and San Francisco International Airport, on August 21, 2022, was operated by another airline. It arrived at gate E11. Passengers were flying aboard a Boeing 737-800 with tail number N78501. See all the flights for UA2173.
UA1272 (SFO-YVR)
This United Airlines flight between San Francisco International Airport and Vancouver International Airport, on August 09, 2022, was operated by another airline. It departed from gate E4. Passengers were flying aboard a Boeing 737-800 with tail number N78501. See all the flights for UA1272.
UA310 (BWI-SFO)
This United Airlines flight between Baltimore-Washington International Thurgood Marshall Airport and San Francisco International Airport, on August 09, 2022, was operated by another airline. It arrived at gate E4. Passengers were flying aboard a Boeing 737-800 with tail number N78501. See all the flights for UA310.
UA643 (SFO-BWI)
This United Airlines flight between San Francisco International Airport and Baltimore-Washington International Thurgood Marshall Airport, on August 08, 2022, was operated by another airline. It departed from gate E8. Passengers were flying aboard a Boeing 737-800 with tail number N78501. See all the flights for UA643.
UA306 (AUS-SFO)
This United Airlines flight between Austin-Bergstrom International Airport and San Francisco International Airport, on August 08, 2022, was operated by another airline. It arrived at gate E8. Passengers were flying aboard a Boeing 737-800 with tail number N78501. See all the flights for UA306.
UA1783 (SFO-AUS)
This United Airlines flight between San Francisco International Airport and Austin-Bergstrom International Airport, on August 08, 2022, was operated by another airline. It departed from gate E12. Passengers were flying aboard a Boeing 737-800 with tail number N78501. See all the flights for UA1783.
UA1761 (SAN-SFO)
This United Airlines flight between San Diego 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 737-800 with tail number N78501. See all the flights for UA1761.
UA1423 (YVR-SFO)
This United Airlines flight between Vancouver International Airport and San Francisco International Airport, on August 02, 2022, was operated by another airline. It arrived at gate F2. Passengers were flying aboard a Boeing 737-800 with tail number N78501. See all the flights for UA1423.
UA1272 (SFO-YVR)
This United Airlines flight between San Francisco International Airport and Vancouver International Airport, on August 02, 2022, was operated by another airline. It departed from gate F14. Passengers were flying aboard a Boeing 737-800 with tail number N78501. See all the flights for UA1272.
UA539 (PHL-SFO)
This United Airlines flight between Philadelphia International Airport and San Francisco International Airport, on August 02, 2022, was operated by another airline. It arrived at gate F14. Passengers were flying aboard a Boeing 737-800 with tail number N78501. See all the flights for UA539.
UA2630 (SFO-PHL)
This United Airlines flight between San Francisco International Airport and Philadelphia International Airport, on August 01, 2022, was operated by another airline. It departed from gate E12. Passengers were flying aboard a Boeing 737-800 with tail number N78501. See all the flights for UA2630.