Flights for UA203 These are not all the flights that UA203 has taken, just some of them that have flown in or out of SFO

UAL203 (ORD-SFO)
This United Airlines flight traveled from Chicago O'Hare International Airport to San Francisco International Airport, on April 14, 2014. Passengers were flying aboard a Boeing 757-200. See all the flights for UA203.
UAL203 (ORD-SFO)
This United Airlines flight traveled from Chicago O'Hare International Airport to San Francisco International Airport, on April 20, 2014. Passengers were flying aboard a Boeing 757-200. See all the flights for UA203.
UAL203 (ORD-SFO)
This United Airlines flight traveled from Chicago O'Hare International Airport to San Francisco International Airport, on May 06, 2014. Passengers were flying aboard an Airbus A320-200. See all the flights for UA203.
UAL203 (ORD-SFO)
This United Airlines flight traveled from Chicago O'Hare International Airport to San Francisco International Airport, on June 25, 2014. Passengers were flying aboard an Airbus A320-200. See all the flights for UA203.
UAL203 (ORD-SFO)
This United Airlines flight traveled from Chicago O'Hare International Airport to San Francisco International Airport, on September 11, 2011. Passengers were flying aboard a Boeing 757-200. See all the flights for UA203.
UAL203 (ORD-SFO)
This United Airlines flight traveled from Chicago O'Hare International Airport to San Francisco International Airport, on May 05, 2014. Passengers were flying aboard a Boeing 757-200. See all the flights for UA203.
UAL203 (ORD-SFO)
This United Airlines flight traveled from Chicago O'Hare International Airport to San Francisco International Airport, on August 01, 2012. Passengers were flying aboard an Airbus A319. See all the flights for UA203.
UAL203 (ORD-SFO)
This United Airlines flight traveled from Chicago O'Hare International Airport to San Francisco International Airport, on July 01, 2013. Passengers were flying aboard a Boeing 757-200. See all the flights for UA203.
UAL203 (ORD-SFO)
This United Airlines flight traveled from Chicago O'Hare International Airport to San Francisco International Airport, on April 06, 2014. Passengers were flying aboard a Boeing 757-200. See all the flights for UA203.
UAL203 (ORD-SFO)
This United Airlines flight traveled from Chicago O'Hare International Airport to San Francisco International Airport, on June 11, 2014. Passengers were flying aboard an Airbus A320-200. See all the flights for UA203.
UAL203 (ORD-SFO)
This United Airlines flight traveled from Chicago O'Hare International Airport to San Francisco International Airport, on June 18, 2014. Passengers were flying aboard an Airbus A320-200. See all the flights for UA203.
UAL203 (PDX-SFO)
This United Airlines flight traveled from Portland International Airport to San Francisco International Airport, on June 19, 2013. Passengers were flying aboard an Airbus A320-200. See all the flights for UA203.

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".