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 (BOS-SFO)
This United Airlines flight traveled from Gen E L Logan International Airport to San Francisco International Airport, on December 23, 2011. Passengers were flying aboard a Boeing 757-200. See all the flights for UA423.
UAL423 (BOS-SFO)
This United Airlines flight traveled from Gen E L Logan International Airport to San Francisco International Airport, on December 21, 2011. 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 June 05, 2007. 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 May 21, 2007. 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 May 26, 2007. 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 June 07, 2007. 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 June 13, 2007. 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 June 08, 2007. Passengers were flying aboard an Airbus A319. 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 01, 2015. 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 July 15, 2015. 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 August 12, 2015. 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 August 08, 2015. Passengers were flying aboard a Boeing 757-200. See all the flights for UA423.