Flights for DL9840 These are not all the flights that DL9840 has taken, just some of them that have flown in or out of SFO

DAL9840 (ATL-SFO)
This Delta Air Lines flight traveled from Hartsfield-Jackson Atlanta International Airport to San Francisco International Airport, on August 09, 2013. Passengers were flying aboard a Boeing 767-300. See all the flights for DL9840.
DAL9840 (JFK-SFO)
This Delta Air Lines flight traveled from John F Kennedy International Airport to San Francisco International Airport, on February 13, 2012. Passengers were flying aboard a Boeing 757-200. See all the flights for DL9840.
DAL9840 (JFK-SFO)
This Delta Air Lines flight traveled from John F Kennedy International Airport to San Francisco International Airport, on January 08, 2018. Passengers were flying aboard a Boeing 757-200. See all the flights for DL9840.
DAL9840 (JFK-SFO)
This Delta Air Lines flight traveled from John F Kennedy International Airport to San Francisco International Airport, on June 28, 2013. Passengers were flying aboard a Boeing 757-200. See all the flights for DL9840.
DAL9840 (JFK-SFO)
This Delta Air Lines flight traveled from John F Kennedy International Airport to San Francisco International Airport, on August 20, 2011. Passengers were flying aboard a Boeing 757-200. See all the flights for DL9840.

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".