Flights for UA423 These are not all the flights that UA423 has taken, just some of them that have flown in or out of SFO

UAL423 (DEN-SFO)
This United Airlines flight traveled from Denver International Airport to San Francisco International Airport, on June 18, 2009. Passengers were flying aboard a Boeing 737-500. See all the flights for UA423.
UAL423 (DEN-SFO)
This United Airlines flight traveled from Denver International Airport to San Francisco International Airport, on August 10, 2009. Passengers were flying aboard a Boeing 737-300. See all the flights for UA423.
UAL423 (DEN-SFO)
This United Airlines flight traveled from Denver International Airport to San Francisco International Airport, on July 28, 2009. Passengers were flying aboard a Boeing 737-300. See all the flights for UA423.
UAL423 (DEN-SFO)
This United Airlines flight traveled from Denver International Airport to San Francisco International Airport, on July 24, 2009. Passengers were flying aboard a Boeing 737-300. See all the flights for UA423.
UAL423 (DEN-SFO)
This United Airlines flight traveled from Denver International Airport to San Francisco International Airport, on August 11, 2009. Passengers were flying aboard a Boeing 737-300. See all the flights for UA423.
UAL423 (DEN-SFO)
This United Airlines flight traveled from Denver International Airport to San Francisco International Airport, on July 13, 2009. Passengers were flying aboard a Boeing 737-300. See all the flights for UA423.
UAL423 (DEN-SFO)
This United Airlines flight traveled from Denver International Airport to San Francisco International Airport, on July 17, 2009. Passengers were flying aboard a Boeing 737-300. See all the flights for UA423.
UAL423 (DEN-SFO)
This United Airlines flight traveled from Denver International Airport to San Francisco International Airport, on August 15, 2009. Passengers were flying aboard a Boeing 737-300. See all the flights for UA423.
UAL423 (DEN-SFO)
This United Airlines flight traveled from Denver International Airport to San Francisco International Airport, on August 05, 2009. Passengers were flying aboard a Boeing 737-300. See all the flights for UA423.
UAL423 (DEN-SFO)
This United Airlines flight traveled from Denver International Airport to San Francisco International Airport, on September 10, 2009. Passengers were flying aboard an Airbus A320-200. See all the flights for UA423.
UAL423 (DEN-SFO)
This United Airlines flight traveled from Denver International Airport to San Francisco International Airport, on September 07, 2009. Passengers were flying aboard a Boeing 757-200. See all the flights for UA423.
UAL423 (DEN-SFO)
This United Airlines flight traveled from Denver International Airport to San Francisco International Airport, on September 04, 2009. Passengers were flying aboard an Airbus A320-200. See all the flights for UA423.

All these flight data are available as openly licensed data on the sfomuseum-data GitHub account. If you'd like to read more about our efforts to archive flight data at SFO Museum have a look a the Mills Field weblog posts tagged "flightdata".