Flights for the airplane with tail number N21723 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.

UA1107 (SFO-IAH)
This United Airlines flight traveled from San Francisco International Airport to George Bush Intercontinental Airport, on June 17, 2020. It departed from gate E2. Passengers were flying aboard a Boeing 737-700 with tail number N21723. See all the flights for UA1107.
UA1050 (DEN-SFO)
This United Airlines flight traveled from Denver International Airport to San Francisco International Airport, on June 13, 2020. It arrived at gate F14. Passengers were flying aboard a Boeing 737-700 with tail number N21723. See all the flights for UA1050.
UA1185 (SFO-DEN)
This United Airlines flight traveled from San Francisco International Airport to Denver International Airport, on June 08, 2020. It departed from gate F20. Passengers were flying aboard a Boeing 737-700 with tail number N21723. See all the flights for UA1185.
UA1070 (IAD-SFO)
This United Airlines flight traveled from Dulles International Airport to San Francisco International Airport, on June 04, 2020. It arrived at gate F20. Passengers were flying aboard a Boeing 737-700 with tail number N21723. See all the flights for UA1070.
UA1070 (SFO-IAD)
This United Airlines flight traveled from San Francisco International Airport to Dulles International Airport, on June 04, 2020. It departed from gate E12. Passengers were flying aboard a Boeing 737-700 with tail number N21723. See all the flights for UA1070.