Flights for UA1646 These are not all the flights that UA1646 has taken, just some of them that have flown in or out of SFO

UAL1646 (SFO-PDX)
This United Airlines flight traveled from San Francisco International Airport to Portland International Airport, on September 11, 2012. Passengers were flying aboard a Boeing 737-900. See all the flights for UA1646.
UAL1646 (SFO-SEA)
This United Airlines flight traveled from San Francisco International Airport to Tacoma International Airport, on August 05, 2013. Passengers were flying aboard a Boeing 737-800. See all the flights for UA1646.
UAL1646 (SFO-SEA)
This United Airlines flight traveled from San Francisco International Airport to Tacoma International Airport, on July 14, 2013. Passengers were flying aboard a Boeing 737-800. See all the flights for UA1646.
UAL1646 (SFO-SEA)
This United Airlines flight traveled from San Francisco International Airport to Tacoma International Airport, on July 21, 2013. Passengers were flying aboard a Boeing 737-800. See all the flights for UA1646.
UAL1646 (SFO-SEA)
This United Airlines flight traveled from San Francisco International Airport to Tacoma International Airport, on July 07, 2013. Passengers were flying aboard a Boeing 737-800. See all the flights for UA1646.
UAL1646 (SFO-SEA)
This United Airlines flight traveled from San Francisco International Airport to Tacoma International Airport, on July 28, 2013. Passengers were flying aboard a Boeing 737-800. See all the flights for UA1646.
UAL1646 (STL-SFO)
This United Airlines flight traveled from Lambert-St. Louis International Airport to San Francisco International Airport, on July 21, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for UA1646.
UAL1646 (STL-SFO)
This United Airlines flight traveled from Lambert-St. Louis International Airport to San Francisco International Airport, on July 07, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for UA1646.
UAL1646 (STL-SFO)
This United Airlines flight traveled from Lambert-St. Louis International Airport to San Francisco International Airport, on August 11, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for UA1646.
UAL1646 (STL-SFO)
This United Airlines flight traveled from Lambert-St. Louis International Airport to San Francisco International Airport, on July 28, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for UA1646.
UAL1646 (STL-SFO)
This United Airlines flight traveled from Lambert-St. Louis International Airport to San Francisco International Airport, on August 04, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for UA1646.
UAL1646 (STL-SFO)
This United Airlines flight traveled from Lambert-St. Louis International Airport to San Francisco International Airport, on July 14, 2013. Passengers were flying aboard a Boeing 737-700. See all the flights for UA1646.

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".